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Develop Samsung Wallet
docapi guidelines app2app sdk integration specs description & use rp sdk is an app2app sdk for samsung wallet driver's license service online scenarios this sdk provides an implementation for direct communication between the samsung wallet and partner applications build the settings rpsdk requires additional dependencies with dependencies { implementation "rp-sdk-1 0-release aar" implementation "androidx core core-ktx 1 3 2" implementation "androidx lifecycle lifecycle-runtime-ktx 2 7 0" implementation "androidx lifecycle lifecycle-livedata-core-ktx 2 7 0" implementation "io reactivex rxjava2 rxjava 2 2 21" implementation "io reactivex rxjava2 rxkotlin 2 4 0" implementation "io reactivex rxjava2 rxandroid 2 1 1" implementation "com squareup okhttp3 okhttp 4 11 0" implementation "com google code gson gson 2 10 1" implementation "org bouncycastle bcprov-jdk15to18 1 66" implementation "com nimbusds nimbus-jose-jwt 9 37 3" } androidmanifest xml <manifest xmlns android="http //schemas android com/apk/res/android"> <uses-permission android name="android permission internet" /> <queries> <package android name="com samsung android spay" /> </queries> </manifest> r8 / proguard the specific rules are already bundled into the aar which can be interpreted by r8 automatically sdk method app2app sdk supports one method request signature & parameters of the request method fun request targetpackagename string, requestid string, applink string, onresponselistener onresponselistener? = null parameter name description targetpackagename the pakcage name to connect to requestid a random string to identify each request applink the applink built by samsung mcs server guide onresponselistener a listener to receive each events or requests [sample code] binding button setonclicklistener { rpclientapis request "com samsung android spay", uuid randomuuid tostring , applink, object rpclientapis onresponselistener { override fun ongetmdocrequestdata deviceengagementbytes bytearray bytearray? { log i tag, "ongetmdocrequestdata $deviceengagementbytes " /** * 1 prepare mdoc request data iso-18013-5 * 2 build sessionestablishmentbytes iso-18013-5 * 3 encrypt it with hkdf iso-18013-5, 9 1 1 5 cryptographic operations **/ return "encryptedsessionestablishmentbytes" } override fun onmdocresponse encryptedresponse bytearray { log i tag, "onmdocresponse $encryptedresponse " /** * 1 decrypt it with hkdf iso-18013-5, 9 1 1 5 cryptographic operations * 2 cbor decode it **/ } override fun onmdocresponsefailed exception exception { log i tag, "onmdocresponsefailed $exception " } } } error code explanation the below exceptions might occur through the onmdocresponsefailed callback exceptions name description rpcommunicationexception this error occurs when the data requested by the listener is incorrect rpconnectionfailedexception this occurs when the app 2 app communication between apps is not working this usually occurs when the target package name is written incorrectly web2app api integration specs the api specifications that need to be implemented by the rp partner are described below called by samsung to the rp partner send key send the wallet application key info and return the data field types requested to the client for authentication of the mdl [request] type value description method post url {partner server url}/rp/v1 0/{cardid}/{refid}/key headers authorization string 1024 required credential token the token can have the prefix "bearer" as an authorization type, e g , bearer <credentials> * refer to authorization token for more details path parameters cardidstring 32 required wallet card identifier issued from partner portal when the partner manager signs up for partner services and registers the wallet card they want to service refid string 32 required unique content identifier defined by the content provider query parameter n/a payload data string 3000 required jwt data encrypted with the public key information and card type if decrypted this data is decoded, and it has the following format information { “data” “xxxxxxxxxxx”, “card” {"type" "relyingparty", "subtype" "others", "designtype" "us-01" }} [example] post {partner server url}/rp/v1 0/{cardid}/{refid}/key content-type application/json { “data” “eyjjdhkioijbvvriiiwidmvyijoimiisinbhcnruzxjjzci6inrlc3qilcj1dgmioje3mtyymdyznjaxmtasimfszyi6iljtmju2in0 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 e07yyl7ior3885vykss5_q1icpx750uu2ge5sujsedx3dr_u0x4tse9_0nxm46dywnfuxruagfjdnjhibc707li9vi3xtyihwnweifydgv1qb9oddkyyzuahxqmjhvuqncdt6df2caqzf5qgmvqfmgse_t7ipu8vqfxe34do-skzj8ftduss2ecdanbqokchih3m39noubpfhcx68plpcw50dixlupxwegniu2t3co24yliaklgac669accxdqr34utvuqhtjt_ftxkahalzoa34_hj_s82fivixh1itd74uojzse7ibwya_kvysozavnmztz2th9cbwycvx8wa” } [response] type value description http status code 200 ok payload data string 3000 required jwt data encrypted with the data field types requested to the client for authentication of the mdl [result] http status code description 200 ok success 400 bad request requests cannot or will not be processed due to something that is perceived to be a client error 401 unauthorized authorization token is invalid or expired 500 internal server error the server encountered an unexpected condition that prevented it from fulfilling the request 503 service unavailable the server is not ready to handle the request send authentication data the data is encrypted according to the requested data and then transmitted along with the data card information [request] type value description method post url {partner server url}/rp/v1 0/{cardid}/{refid}/auth headers authorization string 1024 required credential token the token can have the prefix "bearer" as an authorization type, e g , bearer <credentials> * refer to authorization token for more details pathparameters cardid string 32 required wallet card identifier issued from partner portal when the partner manager signs up for partner services and registers the wallet card they want to service refid string 32 required unique content identifier defined by the content provider queryparameter n/a payload data string 3000 required jwt data encrypted with the public key information and card type if decrypted this data is decoded, it has the following format information { “data” “xxxxxxxxxxx”, “card” {"type" "idcard","subtype" "drivers","designtype" "us-01" }} [example] post {partner server url}/rp/v1 0/{cardid}/{refid}/auth content-type application/json { “data” “eyjjdhkioijbvvriiiwidmvyijoimiisinbhcnruzxjjzci6inrlc3qilcj1dgmioje3mtyymdyznjaxmtasimfszyi6iljtmju2in0 zxlkbgjttwlpaupctvrjnfiwtk5jaxdpwvd4bklqb2lvbe5ctfu5qljwqxrnaluysw4wllz5afaxs0fnmvjhbzbdn2nix2pydgtfoddqbnhrrmpfwkppcnnsuus4mnn0owvxtjeyvzvmoejax1d5ngvzmze3vdnad0pncmpwzwdzoek3avlcwwrlogj5lxfimjblu3ruc3jsszlpslfnn1fam2xzauxscxltb0vlbervd0fpatrmry1jukzwdvlrbxrintg3utd1zwnuq1lwwgzwalvecg01yxbfbdv3szm1ugz3d0dkrem2tmowz1awbtz3nk1kdl9mddbvzwc2mwzjagdbyny0emxmzju2cvyzm0t6zjdjbwvpbkjrnnpmsgutymfwyxhvzk5ld2htzwvjuzftv3larm1nvlj6mefsmnbxa0dqlvjkt1iza3vzavo0vjfidy1aq2iyvwvwyvdzru9nuedrvw1mbtfuowjwt1zmz1nuv1f0se5pvtfjyvrhtg1dwlpvqs5pmzzrd1g4wmjnq21wd3o2ll9kzehfvxnnbm13b1drddrmcu4xmuncauntsnutbwpyv2zrckxos0zvenbss085ckdxbudpz0pqukf1ntfsotryc2vivwdfwu9ns2rgr1vomwjhmhb3y0tfngtjmet2dkfowhprodn0azbjqzrot2f6vzlmovntt0rhmu9imefoavfzqzddevfqnndnlwflvk8waejwsejkmeduruh1z3exc21vvmxrbjblsnjqwhm4x3fwcnplekwtadfpcfk1aes1zug5q3nisms0aehcngnmwulkrujfz09bcgzxcgfumgfsvgfmodhhdxlqsgzhdgrma0tlwdv0q0rtajixse5tt0fhwtjvwlzrr0hxu0wzngjabtu5aezmnvdha0ljce9bmhlwue9tqznwtflkv2jsmm85lkfoedbvytvgetzudkxkvxvketazshc e07yyl7ior3885vykss5_q1icpx750uu2ge5sujsedx3dr_u0x4tse9_0nxm46dywnfuxruagfjdnjhibc707li9vi3xtyihwnweifydgv1qb9oddkyyzuahxqmjhvuqncdt6df2caqzf5qgmvqfmgse_t7ipu8vqfxe34do-skzj8ftduss2ecdanbqokchih3m39noubpfhcx68plpcw50dixlupxwegniu2t3co24yliaklgac669accxdqr34utvuqhtjt_ftxkahalzoa34_hj_s82fivixh1itd74uojzse7ibwya_kvysozavnmztz2th9cbwycvx8wa” } [response] type value description http status code 200 ok400 bad request [result] http status code description 200 ok success 400 bad request requests cannot or will not be processed due to somethingthat is perceived to be a client error 401 unauthorized authorization token is invalid or expired 500 internal server error the server encountered an unexpected condition that prevented it from fulfilling the request 503 service unavailable the server is not ready to handle the request code explanation based on the sample code jwt jws + jwe decryption between the wallet backed server and partner server 1 verify by generateing a jws using the body data // generate jws by the body data private static signedjwt parsejwt final string data { try { return signedjwt parse data ; } catch parseexception e { log error "parserjwt error class {}, error message {}", e getclass , e getmessage ; throw new customexception httpstatus internal_server_error, "parserjwt error" ; } } // verify jws using samsung public key public requestbody getrequestbody final keyring keyring { final signedjwt signedjwt = jwtutils verify keyring gettargetpublickey , encrypteddata, 60 * 10000 ; // verify and generate jws try { final string strbody = jwtutils getdecryptedpayloadfrom keyring getsourceprivatekey , jweobject parse signedjwt getpayload tostring ; // decryption jwe by the jws return objectmapper readvalue strbody, requestbody class ; // convert to data format requested by client } catch parseexception | jsonprocessingexception e { log error "getrequestbody {}", e getmessage ; throw new customexception httpstatus internal_server_error, "data body parse error" ; } } 2 decrypt the jwe using the jws jweobject parse signedjwt getpayload tostring public static string getdecryptedpayloadfrom final key privatekey, final jweobject data { try { data decrypt new rsadecrypter privatekey privatekey ; // decryption jwe using partner private key return data getpayload tostring ; } catch joseexception e { log error "joseexception message {}", e getmessage ; throw new customexception httpstatus internal_server_error, "getdecryptedpayloadfrom error" ; } } 3 convert to the format send by the client public requestbody getrequestbody final keyring keyring { final signedjwt signedjwt = jwtutils verify keyring gettargetpublickey , encrypteddata, 60 * 10000 ; // verify and generate jws try { final string strbody = jwtutils getdecryptedpayloadfrom keyring getsourceprivatekey , jweobject parse signedjwt getpayload tostring ; // decryption jwe by the jws return objectmapper readvalue strbody, requestbody class ; // convert to data format requested by client } catch parseexception | jsonprocessingexception e { log error "getrequestbody {}", e getmessage ; throw new customexception httpstatus internal_server_error, "data body parse error" ; } } generate mdocestablishment 1 generate rsa key per refid public class transactioncontext { private final keypair keypair; // rsa key private final byte[] clientengagement; // body data received through key api, base64url decoded value @equalsandhashcode exclude private int encryptmessagecounter = 0; // count value when encrypted @equalsandhashcode exclude private int decryptmessagecounter = 0; // count value when decrypted } private cache<string, transactioncontext> contextcache; // rsa key management per refid with memory cache // generate and store rsa key per refid only once upon first request public transactioncontext settransactioncontext final string key, final string base64encodedclientengagement { log info "base64encodedclientpublickey {}", base64encodedclientengagement ; this contextcache put key, new transactioncontext keyutils generatekeypair , base64utils decode base64encodedclientengagement getbytes ; return this gettransactioncontextby key ; } // part of retrieving ras key based on refid public transactioncontext gettransactioncontextby final string key { return optional ofnullable this contextcache getifpresent key orelsethrow -> { log info "{} is empty", key ; return new customexception httpstatus bad_request, "no key matching the refid" ; } ; } 2 create request field values @override public mono<list<string>> createrequest final partnerinputdto inputdto { final string mockdata = "{ \"doctype\" \"org iso 18013 5 1 mdl\", \"namespaces\" { \"org iso 18013 5 1\" { \"sex\" false, \"portrait\" false, \"given_name\" false, \"issue_date\" false, \"expiry_date\" false, \"family_name\" false, \"document_number\" false, \"issuing_authority\" false }, \"org iso 18013 5 1 aamva\" { \"dhs_compliance\" false, \"edl_credential\" false } } }"; return mono just collections singletonlist mockdata ; } 3 generate establishment @allargsconstructor public class establishment { private final transactioncontext context; // info of client public key , partner private key, public key private final list<string> strreqs; // data field information required for authentication to the client private final keyring keyring; // rsa key information for jwt jws + jwe encryption and decryption between wallet backed server and partner server } protected cborobject generate { final cborobject sessionestablishment = cborobject newmap ; sessionestablishment set e_reader_key, cborobject fromobjectandtag keyutils getereaderkey context , tag_size ; // generate onekey by public key in transactioncontext sessionestablishment set data, cborobject fromobject cipherutils encrypt context, generaterequestformat getrequestcborobjectsfrom strreqs ; // add request data field information for authentication return sessionestablishment; } generate the response value jwt jws + jwe 1 generate establishment with jwe public static string encryptedstringjwe final key publickey, final string data { // please enter samsung public key and establishment data final jweobject jwe = new jweobject new jweheader builder jwealgorithm rsa_oaep_256, encryptionmethod a128gcm build , new payload data ; try { jwe encrypt new rsaencrypter rsapublickey publickey ; return jwe serialize ; } catch joseexception e { log error "encryptedstringjwe exception message {}", e getmessage ; throw new customexception httpstatus internal_server_error, "encryptedstringjwe error" ; } } 2 generate jws by jwe public static string generatesignedstringjws final key privatekey, final key publickey, final string payload { // enter your partner’s public key, private key, and jwe data try { final jwsobject jwsobj = new jwsobject getdefaultjwsheader , new payload payload ; jwssigner signer = new rsassasigner new rsakey builder rsapublickey publickey privatekey rsaprivatekey privatekey build ; jwsobj sign signer ; return jwsobj serialize ; } catch joseexception e { log error "encryptedstringjws exception message {}", e getmessage ; throw new customexception httpstatus internal_server_error, "generatesignedstringjws error" ; } } 3 generate jwt jws + jwe public partneroutputdto topartneroutputdto { final cborobject generate = this generate ; final string establishment = base64 geturlencoder encodetostring generate encodetobytes ; final string strjwe = jwtutils encryptedstringjwe keyring gettargetpublickey , establishment ; final jwsheader jwsheader = jwtutils getdefaultjwsheader keyring getversion , keyring getcertificateid , "partnerid" ; return new partneroutputdto jwtutils generatesignedstringjws jwsheader, keyring getsourceprivatekey , keyring getsourcepublickey ,strjwe ; } authentication processing for values in data fields requested for authentication 1 retrieve transactioncontext value stored in cache using refid value @override public mono<transactioncontext> getcontext final partnerinputdto inputdto { return mono just this transactioncontextmanager gettransactioncontextby inputdto getrefid ; } 2 processes the decryption process of the request body data like jwt jws + jwe decryption between wallet backed server and partner server 3 generate mdocresponse public class mdocresponse { private final transactioncontext context; // managed tranactioncontext by refid private final byte[] data; // base64url decoded data after decrypting jwt jws + jwe data public mdocresponse final transactioncontext context, final string inputdto { this context = context; this data = base64utils decode inputdto getbytes standardcharsets utf_8 ; } } 4 get the field values requested for authentication from the data in mdocresponse public string getdata { // sessiondata = { // ? "data" bstr ; encrypted mdoc response or mdoc request // ? "status" uint ; status code // } final cborobject response = cborobject decodefrombytes data ; checktype response, cbortype map ; final cborobject data = response get data ; checktype data, cbortype bytestring ; return cborobject decodefrombytes isencryptedmode ? cipherutils decrypt this context, data getbytestring data getbytestring tojsonstring ; } 5 create a session value using the transactioncontext value managed by refid and then decrypt it private static byte[] processcipher final ciphermode ciphermode, final transactioncontext context, final byte[] bytes { // ciphermode encrypt or decrypt, bytes data passed by the client try { cipher cipher = cipher getinstance "aes/gcm/nopadding" ; final int counter = ciphermode encrypt == ciphermode ? context getencryptmessagecounter context getdecryptmessagecounter ; gcmparameterspec parameterspec = new gcmparameterspec 128, getsessionkeyiv ciphermode identifier, counter ; cipher init ciphermode ciphermode , getsecretkeyspec context, ciphermode info , parameterspec ; return cipher dofinal bytes ; } catch invalidalgorithmparameterexception | nosuchpaddingexception | illegalblocksizeexception | nosuchalgorithmexception | badpaddingexception | invalidkeyexception e { log error "error type {}, message {}", e getclass , e getmessage ; throw new customexception httpstatus internal_server_error, "processcipher error" ; } } 6 examining data received from the client @override public mono<void> authentication final string response { log info "response info {}", response ; return mono empty ; }
Develop Samsung Pay
docsample applications sample apps, use cases, and ux strategies are included here to aid you in understanding the sdk and implementing it in your application sample source code and apks can be downloaded from download section sample merchant app included with the samsung pay sdk to demonstrate its features, the sample merchant app shows you how to implement the payment sheet’s dynamic controls to leverage additional customer order and payment data and/or create a more custom ui look and feel the following payment sheet controls are available addresscontrol plaintextcontrol amountboxcontrol spinnercontrol controls are applied to suit a particular purpose or need for example, displaying a promotion notice in the payment sheet using the plaintextcontrol applying an addresscontrol this control is used to display the billing or shipping address on the payment sheet based on samsung pay’s my info user profile or addresses provided by your merchant app during the transaction request when creating the control, controlid and sheetitemtype are needed to distinguish the billing address from the shipping address otherwise, your merchant app sets the following properties address title – displays a merchant-defined title on the payment sheet if empty, the default title such as “billing address” is displayed address – provides various methods to retrieve address details the merchant app can retrieve the phone number using the 'getphonenumber' method of 'customsheetpaymentinfo' address starting from api level 1 5, the addressee’s email address has also been added retrieve the email address using 'getemail' you can also set a display option for the shipping address with 'setdisplayoption' for more information, see the samsung pay sdk-api reference javadoc and the sample code included with the samsung pay sdk sheetupdatedlistener – used to capture the response from the samsung wallet app; merchant app must deliver to the samsung wallet app an amountboxcontrol to display payment information on a custom payment sheet when the onresult callback is called, the updatesheet method must also be called to update the current payment sheet errorcode – used for containing error codes directly related to the address the workflows for billingaddresscontrol and shippingaddresscontrol are shown below the following sample code demonstrates use of addresscontrol on the payment sheet fun makebillingaddresscontrol addresscontrol { val billingaddresscontrol = if !iszipcodeonly { // for billing address addresscontrol billing_address_id, sheetitemtype billing_address billingaddresscontrol addresstitle = "billing address" } else { /* * for billing address with zip code only * since api level 2 19, sheetitemtype zip_only_address * for us country only */ addresscontrol billing_address_id, sheetitemtype zip_only_address billingaddresscontrol addresstitle = "zip code" } //this callback is received when controls are updated billingaddresscontrol sheetupdatedlistener = sheetupdatedlistener return billingaddresscontrol } //listener for billing or zip code only billing address fun sheetupdatedlistener sheetupdatedlistener { return sheetupdatedlistener { updatedcontrolid string, customsheet customsheet -> log d tag, "onresult billingaddresscontrol updatedcontrolid $updatedcontrolid" val addresscontrol = customsheet getsheetcontrol updatedcontrolid as addresscontrol val billaddress = addresscontrol address //validate only zipcode or billing address and set errorcode if needed if addresscontrol sheetitem sheetitemtype == sheetitemtype zip_only_address { val errorcode int = validatezipcodebillingaddress billaddress log d tag, "onresult updatesheetbilling errorcode $errorcode" addresscontrol errorcode = errorcode customsheet updatecontrol addresscontrol } else { val errorcode = validatebillingaddress billaddress log d tag, "onresult updatesheetbilling errorcode $errorcode" addresscontrol errorcode = errorcode customsheet updatecontrol addresscontrol } // update transaction values val amountboxcontrol = customsheet getsheetcontrol amount_control_id as amountboxcontrol amountboxcontrol updatevalue product_item_id, 1000 0 amountboxcontrol updatevalue product_tax_id, 50 0 amountboxcontrol updatevalue product_shipping_id, 10 0 amountboxcontrol updatevalue product_fuel_id, 0 0, "pending" amountboxcontrol setamounttotal 1060 0, amountconstants format_total_price_only customsheet updatecontrol amountboxcontrol try { // call updatesheet for the full amountboxcontrol; mandatory paymentmanager updatesheet customsheet } catch e illegalstateexception { e printstacktrace } catch e nullpointerexception { e printstacktrace } } } // for shipping address fun makeshippingaddresscontrol addresscontrol { val shippingaddresscontrol = addresscontrol shipping_address_id, sheetitemtype shipping_address shippingaddresscontrol addresstitle = "shipping address" val shippingaddress = customsheetpaymentinfo address builde setaddressee "name" setaddressline1 "addline1" setaddressline2 "addline2" setcity "city" setstate "state" setcountrycode "usa" setpostalcode "zip" setphonenumber "555-123-1234" setemail "user@samsung com" build shippingaddresscontrol address = shippingaddress /* * set address display option on custom payment sheet * if displayoption is not set, then default addresscontrol is displayed on custom payment sheet * the possible values are combination of below constants * {display_option_addressee} * {display_option_address} * {display_option_phone_number} * {display_option_email} */ var displayoption_val = addressconstants display_option_addressee // addressee is mandatory displayoption_val += addressconstants display_option_address displayoption_val += addressconstants display_option_phone_number displayoption_val += addressconstants display_option_email shippingaddresscontrol displayoption = displayoption_val return shippingaddresscontrol } here’s how these controls display on a custom payment sheet applying a plaintextcontrol this control is used for displaying a title with a two lines of text or a single line of text without a title on the payment sheet when allocating this control, a controlid is needed the merchant app sets both the title, as applicable, and the text diagrammed below is the flow between your merchant app and samsung pay the merchant app code invoking this class would look something like the following fun makeplaintextcontrol plaintextcontrol { val plaintextcontrol = plaintextcontrol "exampleplaintextcontrolid" plaintextcontrol settext "plain text [example]", "this is example of plaintextcontrol" return plaintextcontrol } and this is how it displays on the custom payment sheet applying an amountboxcontrol amountboxcontrol is used for displaying purchase amount information on the payment sheet it requires a controlid and a currencycode, and consists of item s and amounttotal, defined as follows and diagrammed on the next page item – consists of id, title, price, and extraprice if there is an extraprice in amountboxcontrol, its text is displayed on the payment sheet even though there is an actual numerical price value if there is no extraprice, then currencycode with the price value is displayed amounttotal – consists of price and displayoption the displayoption allows predefined strings only your merchant app can set the text to “estimated amount”, “amount pending”, “pending”, “free”, and so forth the ui format for the string is different for each option notethe setamounttotal api may accept strings that are not predefined as an argument, but itgenerates an invalid parameter condition or returns an error code in such cases for details, see the javadoc samsung pay sdk-api reference, available in the documentation folder of your downloaded sdk package here’s a coding example to demonstrate the use of amountboxcontrol in a payment sheet fun makeamountcontrol amountboxcontrol { val amountboxcontrol = amountboxcontrol amount_control_id, "usd" amountboxcontrol additem product_item_id, "item", 1000 0, "" amountboxcontrol additem product_tax_id, "tax", 50 0, "" amountboxcontrol additem product_shipping_id, "shipping", 10 0, "" amountboxcontrol setamounttotal 1060 0, amountconstants format_total_price_only amountboxcontrol additem 3, product_fuel_id, "fuel", 0 0, "pending" return amountboxcontrol } the merchant app can also add new items using the 'additem' method of 'amountcontrolbox' during callback importantyour merchant app needs to call the updatevalue item_id method of amountboxcontrol to update each amount item then call customsheet updatecontrol to make the changes take effect in customsheet eventually, paymentmanager updatesheet 'customsheet' must be called to let samsung pay know that no further action is pending in the merchant app when the custom sheet is updated, the merchant can add new items to amountboxcontrol for example, if the user selects a specific card in the payment sheet which the merchant offers, a discount item can be added via the updatesheet // example for adding new item while updating values val amount = sheet getsheetcontroll "id_amount" amount updatevalue "itemid", 900 0 amount updatevalue "taxid", 50 0 amount updatevalue "shippingid", 10 0 amount updatevalue "fuelid", 0 0 // add “discount” item amount additem 4, "discountid", "discount", -60 0, "" amount setamounttotal 1000 0, amountconstants format_total_price_only sheet updatecontrol amount // call updatesheet with amountboxcontrol; mandatory try { paymentmanager updatesheet sheet } catch e illegalstateexception { e printstacktrace } catch e nullpointerexception { e printstacktrace } applying the spinnercontrol this control is used for displaying spinner options on a payment sheet when creating the control, controlid, title, and sheetitemtype are needed to distinguish between the types of spinner to be displayed your merchant app sets the following properties with spinnercontrol title – the merchant-defined spinner title to appear the payment sheet sheetitemtype – provides various types of spinner a shipping_method_spinner and an installment_spinner are the two types of spinner available as of api level 1 6 noteshipping_method_spinner can be used when the shipping address comes from the samsung wallet app; i e , when the customsheetpaymentinfo addressinpaymentsheet option is set to need_billing_and_shipping or need_ shipping_spay when the shipping address is provided by the merchant app send_shipping or need_billing_ send_shipping , it is not changeable in the payment sheet the shipping fee if applied must be pre-calculated on the merchant app side here’s an example of constructing a spinnercontrol within your merchant app // construct spinnercontrol for shipping method val spinnercontrol = spinnercontrol shippingmethod_spinner_id, "shipping method ", sheetitemtype shipping_method_spinner // let the user can select one shipping method option on the payment sheet spinnercontrol additem "shipping_method_1", getstring android r string standard_shipping_free spinnercontrol additem "shipping_method_2", getstring android r string twoday_shipping spinnercontrol additem "shipping_method_3", getstring android r string oneday_shipping spinnercontrol selecteditemid = "shipping_method_1" // set default option // listen for sheetcontrol events spinnercontrol setsheetupdatedlistener sheetupdatedlistener { updatedcontrolid, customsheet -> val amountboxcontrol = customsheet getsheetcontrol amount_control_id as amountboxcontrol val spinnercontrol = customsheet getsheetcontrol updatedcontrolid as spinnercontrol when spinnercontrol selecteditemid { "shipping_method_1" -> amountboxcontrol updatevalue product_shipping_id, 10 0 "shipping_method_2" -> amountboxcontrol updatevalue product_shipping_id, 10 + 0 1 "shipping_method_3" -> amountboxcontrol updatevalue product_shipping_id, 10 + 0 2 else -> amountboxcontrol updatevalue product_shipping_id, 10 0 } amountboxcontrol setamounttotal 1000 + amountboxcontrol getvalue product_shipping_id , amountconstants format_total_price_only customsheet updatecontrol amountboxcontrol // call updatesheet with amountboxcontrol; mandatory try { paymentmanager updatesheet customsheet } catch e illegalstateexception { e printstacktrace } catch e nullpointerexception { e printstacktrace } } // construct spinnercontrol for installment plan val spinnercontrol = spinnercontrol installment_spinner_id, "installment", sheetitemtype installment_spinner spinnercontrol additem "installment_1", "1 month without interest" spinnercontrol additem "installment_2", "2 months with 2% monthly interest" spinnercontrol additem "installment_3", "3 months with 2 2% monthly interest" spinnercontrol selecteditemid = "installment_1" // set default option // listen for sheetcontrol events spinnercontrol setsheetupdatedlistener sheetupdatedlistener { updatedcontrolid, customsheet -> val amountboxcontrol amountboxcontrol = customsheet getsheetcontrol amount_control_id as amountboxcontrol val spinnercontrol = customsheet getsheetcontrol updatedcontrolid as spinnercontrol val totalinterest = 0 0 when spinnercontrol selecteditemid { "installment1" -> amountboxcontrol updatevalue product_total_interest_id, totalinterest "installment2" -> // calculate total interest again and updatevalue amountboxcontrol updatevalue product_total_interest_id, totalinterest "installment3" -> // calculate total interest again and updatevalue amountboxcontrol updatevalue product_total_interest_id, totalinterest else -> amountboxcontrol updatevalue product_total_interest_id, totalinterest } amountboxcontrol setamounttotal 1000 + amountboxcontrol getvalue product_total_interest_id , amountconstants format_total_price_only customsheet updatecontrol amountboxcontrol // call updatesheet with amountboxcontrol; mandatory try { paymentmanager updatesheet customsheet } catch e illegalstateexception { e printstacktrace } catch e nullpointerexception { e printstacktrace } } update sheet with custom error message to display a custom error message on the payment sheet, use updatesheet with customerrormessage fun updatesheet sheet customsheet, errorcode int, customerrormessage string this api method is an extended version of the existing updatesheet sheet method which gives the merchant the ability to display a custom error message in the payment sheet’s authentication area it can be used to inform the user of any foreseen error scenarios encountered // update sheet with custom_messsage error code paymentmanager updatesheet customsheet, paymentmanager custom_message,"phone number entered is not valid please change your phone number " sample issuer app the samsung pay sdk also provides a sample issuer app to showcase samsung pay sdk features issuer app can add card to samsung wallet by selecting specific token service provider tsp from the dropdown menu to add cobadge card you need to select primary and secondary token service providers tsp from the dropdown menus for more information, refer to the samsung pay sdk api reference and sample code
Connect Samsung Developer Conference
webtech sessions dive into the future of connected customer experiences through tech sessions by developers offering further insight into the innovations introduced in the keynote filter filter filter all reset apply there are no results. sessions contents & service, open innovation 8k visual quality and ecosystem in this session, we will present how the genuine 8k contents correctly displayed on 8k display devices could deliver our customers an immersive picture quality experience. we will start with a summary of the previous studies about user perceptions regarding the 8k visual quality. we then will explain why the full-frequency 8k contents are superior to the lower resolution in producing fine details on the image. we will also discuss some technical challenges we face toward adopting and utilizing 8k contents in a real-world environment and describe how we can overcome these hurdles. specifically, we will discuss technologies such as super-resolution and new image sensors to overcome the full-frequency barrier of 8k content. last, we will introduce the 8k association (8ka), a non-profit organization composed of key technology companies in the consumer and professional 8k ecosystem, and briefly mention 8ka's ongoing effects on the research, standardization, and promotion of 8k visual quality. sessions contents & service, developer program, mobile add samsung pay as your payment method in this session, we will share learnings from our experience developing the samsung pay mobile payment service, revealing insights that can be applied to your own platforms. we will also take a look at the samsung pay development kit and how you can use this for your own service. sessions game, ar, mobile ar emoji: your avatar, your experience the ar emoji feature on samsung devices enables users to create a 3d avatar model that can be used in other applications. similar to avatars currently available in games or in the metaverse, our ar emojis are a chance for users to express themselves, their style and their personality, digitally. but this is only the beginning. in this session, we’ll explore the future of ar emojis and how the ar emoji sdk is opening more opportunities for developers to collaborate with samsung to bring to life new services featuring these avatars and optimize them for the metaverse though our collaboration with unity. sessions ai, iot, smart appliances bixby 2022 what’s new what’s new with bixby in 2022? in this session, you will hear about some of the exciting improvements to the nlu and on-device bixby as well as updates to the bixby developer studio, which introduces a brand new javascript runtime that provides a modern, secure, high-performance environment. we will also take a closer look at the brand new bixby home studio, which allows smart device developers to customize and optimize voice control of smart devices, including allowing a single command to intelligently control multiple smart home devices. sessions contents & service, game creating spectacular galaxy game audio experiences with dolby atmos galaxy smartphones and tablets can produce spectacular game audio with dolby atmos. discover how you can create deeper emotional connections with players, keep them playing for longer, and earn their loyalty by unleashing the full power of samsung galaxy mobile game audio. in this session you will hear from dolby’s partner audiokinetic who will discuss how developers can make dolby atmos games, including a walkthrough of how to use dolby atmos plug-ins in audiokinetic's wwise audio middleware. moong labs – creators of epic cricket one, of india's most popular sports games – will also share how dolby atmos benefitted their game and you will find out how dolby supports game developers and other activities on our website. sessions health, wearable expand health experiences with galaxy watch the galaxy watch’s powerful bioactive sensor, together with the wear os powered by samsung, is transforming mobile health experiences. and now, this technology is even more powerful thanks to the samsung privileged health sdk. find out how the samsung privileged health sdk is allowing developers to retrieve raw or analyzed sensor data for their applications, including bia, ecg, blood oxygen level or sweat loss, and help users’ to accurately monitor their health stats. sessions web flexible and private web experience on samsung internet in this session, you will learn how to enhance and optimize your web experience for foldable devices using device posture api and viewport segment media query. we'll also take a closer look at how samsung internet protects users’ privacy online. sessions mobile, enterprise, developer program google and samsung strengthen enterprise ecosystem together samsung’s global mobile b2b team is working closely with the android enterprise team to build a galaxy ecosystem of partners who are bringing innovation into workplaces. discover how partner solutions create unique experiences on samsung devices and how we plan to work together to help future partners step into the samsung android ecosystem for enterprises and smbs. sessions contents & service, developer program, enterprise hdr10+/salt and automatic hdr video creations for productions hdr10+ is an essential technology for premium hdr viewing experience and it is widely reach to consumer displays including mobile devices. in order to provide hdr content services, it requires changing service provider's infra structure or workflows and video processing technology from sdr to hdr with a lot of engineering efforts. then, hdr10+/salt solutions and partnership program from samsung is designed to build an extremely cost effective automatic solution up for content creators, post production houses and ott service providers even including game developers. the solution package is designed with various standalone applications, reference apps, sdks on various oses and partnership programs to help 3rd parties for creation of hdr contents. hdr10+/salt partnership program provides full compatibility to hdr10+ llc certification program and major studios, ott service providers and tool makers are already partners of the program and samsung provides them the best hdr content quality. sessions developer program, open innovation, health healthcare research hub our open source project provides end-to-end solutions such as sdk, platform, and portal for various use cases from medical research studies to clinician services using wearable devices. medical research does not have to stay complicated. anyone can easily build and customize their own research studies or clinician services using this open source. recently, as the accuracy of sensors installed on wearable devices has improved, interest in healthcare research using wearable health data is increasing. however, it takes a lot of time for researchers to develop research applications and server infrastructure for storing and analyzing data from scratch. sr is developing android sdk and data platform solutions that support healthcare research using health data from our wearable devices (watch 4 and later versions) and provide them as open source in order to solve the pain points of these researchers and establish a digital health care research ecosystem centered on our wearable devices. sessions iot, monetization, smart appliances home connectivity alliance introduction of home connectivity alliance and how appliance manufactures can enable interoperability across brands. hear how hca interoperability can benefit consumers and partners including b2b (home builders, mfu, etc). join the hca and become a leader in innovation within the connected iot ecosystem. sessions ai, ar immersive audio we will demonstrate an audio system with dramatically improved immersive 3d audio experience. hardware will be similar to samsung’s critically acclaimed hw-q990b soundbar, but will include several new technologies that will be found in future samsung products. these technologies automatically correct for room acoustics and the location of the listeners and loudspeakers. visitors will compare the sound of the system before and after the system’s unique automated calibration process. listeners will enjoy improved spatial and timbral performance in stereo, surround and immersive audio formats with both music and cinematic content. sessions security & privacy introducing blockchain wallet with knox vault in this session, we introduce blockchain wallet for samsung smart tv. blockchain wallet allows our smart tv users to manage their blockchain accounts and transfer their cryptocurrency to another blockchain account. it ensures to retain a key for blockchain transactions in a secure way. dapp developers can build their tv dapp with blockchain wallet for blockchain functions such as blockchain connection and transaction signing. knox vault is an enhanced hardware-based security solution to protect sensitive data such as cryptographic keys, passwords and personal data. knox vault provides strong security guarantees against hardware attacks such as physical attack, side-channel attack and fault attack. as a core component of the knox security platform, knox vault is an isolated, tamper-proof, secure subsystem with its own secure processor and memory. sessions developer program, enterprise, android introducing samsung galaxy camera ecosystem discover how advanced camera technologies, based on samsung’s leading hardware and software, can enable developers to create more powerful camera experiences for their users. we will take a look at some of the incredible partnerships samsung has already formed with numerous app developers and reveal how these collaborations enriched users’ camera experiences. sessions mobile, android, productivity intuitive multitasking experience based upon android 12l join us to see how samsung continues to enhance the large screen user experience further with fast app switching and intuitive multitasking capabilities. to maximize the galaxy foldable experience, we're expanding flex mode even further with more apps and partners as well as google's ongoing collaborative effort in android 12l. sessions iot, mobile, uwb joint efforts on standardization toward open ecosystem of uwb services the presentation will introduce samsung's joint efforts with industry partners on the uwb tech/service standardization, which is essential for creating an interoperable open ecosystem of uwb products and services. especially, it will introduce activities at fira consortium, which was established by samsung jointly with industry leaders to provide interoperability specifications as well as certification programs. it may also include target uwb services and relevant standardization status & plan. sessions ar, game, tizen journey to immersive interactive exp in big screen with xr and avatar fw xr framework webapis enable developers to build xr applications on the tizen platform. we will go over features of the webapis, share some demos, and provide information on how to get started. additionally we will show you a sample code of how to capture and handle user's gestures and full body movement. avatar framework for tizen is a unified solution providing high level apis that allow samsung developers to easily include the 3d avatar models and features in their samsung tv applications. we will go over all the cool features and options of our framework in this video. sessions connectivity, android, mobile le audio: the future of wireless sound introducing le audio: a new standard for bluetooth technology on galaxy devices. le audio will enhance the performance of classic bluetooth audio and introduce isochronous communication, creating whole new wireless audio experience on galaxy devices. in this session, we will introduce the technical features of le audio, what it means for the galaxy ux and how you could enhance wireless audio experience of your app with le audio. sessions design, ui/ux one ui design principles in partnership one ui creates a unified experience across our galaxy devices, from phones and tablets to watches and galaxy books. in creating and refining one ui, we've followed four key principles: simplicity, effortlessness, consistency, and authenticity. with one ui, we've also made a commitment to openness, which means some of the best things in one ui come from partnerships. in this session, we'll talk about some of those partnerships and how we aligned them with our four design principles to get great results. sessions ui/ux, design, android one ui: customer centric design one ui starts with a true understanding what our customers want. hear more about what samsung have learned from listening to extensive customer feedback and usage data, and how we have adapted our designs in response. we'll take a look at some real-life examples of how the ux design of the calendar, settings and samsung health app has evolved over time to better meet customer needs. sessions enterprise, data, security & privacy our journey to responsibly handling data at samsung, we place personal data protection as one of our top priorities. learn how we responsibly handle personal data in our applications and platforms. we'll share with you our journey in protecting personal data. we'll talk about what it means to responsibly govern and access data in samsung's enterprise environment. we'll cover specifics on how to classify & protect data as a whole. pick up insights on privacy technologies and design patterns we apply in our data intensive applications today. sessions developer program, tizen, ui/ux prism: the new ux development tool and process in today’s environment of rapid and unpredictable transformation, establishing a creative and increasingly collaborative tech culture is one of the most challenging requirements. in this session, we would like to introduce a new method to revolutionize the tizen platform-based app development process. a new development process named prism automates most of the inefficient overheads from design to implementation of app ui, innovatively improving app development productivity. we will introduce prism-based development process and deliver this innovative app development culture to developers through the sessions. sessions developer program, smart appliances, tizen remote test lab: what’s new in tv development environment the current tizen tv development environment, represented by emulator and tv, is a very limited support method for developers. depending on the version of emulator, the latest features currently supported by the tv may not be available, and various models of physical tvs may be required to verify actual operation. rtl tv tries to overcome the limitations of the current development environment. sessions contents & service, monetization, data samsung tv plus: the advanced ad-tech and partnerships that fund free tv samsung’s free ad-supported tv (fast) service “tv plus” has been a breakout success. although it looks and feels like traditional tv, it is anything but! behind the scenes of this slick tv & mobile experience is high-performance technology, vast amounts of data & algorithms, and a thriving partner ecosystem. join this session to learn more about the mind-boggling world of advertising technology, how it works, and how multiple companies come together to provide free tv to millions of consumers worldwide. sessions android, contents & service samsung wallet, it's convenient, personal and safe as the growth of digital wallets skyrockets, samsung recently announced samsung wallet – a new platform bringing almost all of the cards you’d typically find in a physical wallet, as well as important documents, into one easy-to-use and secure mobile application. as samsung wallet rapidly expands its content set, find out more about the future of digital wallets and how open api’s can allow developers to build integrations for this service. sessions iot, security & privacy smartthings edge: the next level experience discover how samsung is transitioning the smartthings-published groovy dths to edge drivers while maintaining a seamless experience for our users. we’ll walk through the process of onboarding edge-based devices and how to set up an automation with an edge device that runs locally. sessions iot, monetization, smart appliances smartthings energy service introduction of smartthings energy service and how partners (energy companies, smart device mfgs, etc) can integrate to provide a seamless energy management service for their consumers leveraging samsung's smartthings energy ecosystem. sessions iot, contents & service, open innovation smartthings find: find alongside 200+ million users smartthings find is samsung’s fastest growing service, powered by more than 200 million galaxy users. discover some of the new features and functions added over the past year and learn how partners can leverage the service to innovate their own solutions to meet the needs of businesses and consumers alike. sessions iot, contents & service, open innovation smartthings platform enhancements for openness and interoperability the smartthings platform continues to evolve to promote openness and interoperability. in this session, we will share some exciting new updates to the smartthings platform to support matter and thread, and discuss the home connectivity alliance. sessions health, tizen telehealth in samsung devices samsung display device (smart tvs & smart monitors) users will be able to launch telemedicine service within the samsung products. once you pick your physician, you can use one of the approved usb cameras to connect to the tv and jump on a video call with a physician via external service provider's built-in web applications. after a few account setup process on mobile / pc, you can easily start your session any time on tv without any additional complicated inputs. at your session, you can also receive a prescription to be filled in at a mail-in online pharmacy (pc or mobile) to receive prescription drugs at your doorstep. sessions open innovation, enterprise, productivity the next generation samsung retail solutions in a mobile-first world, device convergence, simplification, ergonomically designed accessories, sw solutions and the connected galaxy ecosystem are helping to boost productivity and efficiency in the retail industry. in this session, we will explore how the next generation of retail solutions are shaping the industry’s future and will take a closer look at samsung’s three major retail solutions - data capturing, payment, and push-to-talk. sessions developer program, mobile, android the samsung knox partner program: partner success journey the samsung knox partner program (kpp) equips you with everything you need to build ideas and market your mobile solutions. in this session, we will take a look at some of our partners’ solutions and how collaborating with the samsung kpp has helped enhance their user experience. join us to see why kpp is causing a stir in the business developer community! sessions enterprise, tizen tizen everywhere this session highlighted samsung's direction and goals for the enterprise and b2b markets, focused on taking tizen to the next level on so many platforms. various enterpriser displays based on tizen and solutions suitable for business purposes will always be together. tizen enterprise platform will provide all the technology infrastructure you need, including the samsung developers portal for b2b for developer support and the samsung apps tv seller office for custom application support in your own business. after announcing "tizen open" at sdc in 2019, samsung established licensing system to provide tizen tv os to other tv makers. in order for partners to develop tizen tv products faster, samsung prepared reference tv solution. in europe, australia, türkiye, tizen tvs have been released sequentially through more than 10 tv brands since september 22. sessions wearable, design, android watch face studio's first journey and expectation for next a must-have to create beautiful watch faces! watch face studio (wfs) is now a little over a year old. hear the developers of wsh share the highs and lows of bringing the tool to life and meet the designers responsible for creating the eco watch face. this session is an insight into the year-long journey to create wfs – and the story of where we’re going next. sessions iot, tizen, ui/ux what's new in tizen? are you curious about the direction in which intelligent iot platform “tizen” is developing? this session introduces ui assistant technology and extended 3d ui framework for providing advanced user experience, and explains innovative technologies that make run the tizen platform on top of the android hardware abstraction layer to facilitate securing new hws. and introduce the iot standard 'matter', which will be newly supported on tizen. finally, we provide a guide and tip for cross platform application development. sessions ai, iot, smart appliances what’s new in bixby for smart home bixby brings the smart home experience to life with the power of voice. find out how our new tool, bixby home studio, will enable device manufacturers to build more intelligent, more engaging voice experiences for smartthings-connected devices. sessions mobile, design, ui/ux what’s new in one ui 5 one ui 5 pushes personalization and productivity to the next level. explore new features that enable you to build a galaxy experience that reflects your personal style and help you to get more done on all your devices, wherever or whenever you need to.
Connect Samsung Developer Conference
websessions dive into the future of connected customer experiences through tech sessions by developers offering further insight into the innovations introduced in the keynote filter filter filter all reset apply there are no results. advanced professional video codec open theater mobile experience, mobile the advanced professional video codec is a new codec for high quality video capture and post-production on smart phones. ai & mlops infrastructure for enterprise-grade llms tech session sustainability / innovation, ai vessl ai's tech session on mlops practices for training, tuning, and deploying llama2-scale llms and generative ai. bringing ai/ml into production: where do we stand? open theater sustainability / innovation, ai unlock the future of education with ai and iot, learn how tech is personalizing classrooms, and gain insights for your own setting. developer center announcement tech session platform innovation, iot, developer program our new developer center makes it easier to get your products integrated and "works with smartthings" certified. experience interactive advertisement on samsung tv plus tech session screen experience, contents&service, smarttv, monetization introduction to the features of interactive advertisements on samsung tv plus and the technology behind them. exploring the digital health ecosystem: samsung health as digital front door mega session health experience, health, wearable, mobile new samsung health features, samsung privileged health sdk, and collaboration for research with samsung health stack. gamepad on tizen tv mega session screen experience, game, developer program, tizen this session provides valuable tips and techniques for game application developers and gamepad manufacturers. games with samsung galaxy mega session mobile experience, game, android, mobile the latest in mobile gaming development technologies, responsive ui for flex mode, and mobile cloud gaming. generative ai for coding: improving productivity in sw development tech session sustainability / innovation, ai introduce samsung's multilingual code generation model and internal ai-powered coding assistant tool. hdr10+ gaming mega session screen experience, game the hdr10+ gaming panel discussion covers an overview of hdr10+ gaming and how game developers can support it. next-gen pet care with dr.tail open theater sustainability / innovation, health, contents&service, mobile merging past health records with cutting-edge veterinary consultations for pet wellness. open license of solarcell remote tech tech session screen experience, esg we explain the eco-friendly solarcell remote technology, and introduce the technology license open to everyone. open source on-device ai sw platform for optimized executions, personalization, pipelines, and mlops tech session platform innovation, ai, open source introduce open source on-device ai software platform nnstreamer, nntrainer programmable picture quality enhancement architecture tech session sustainability / innovation, ai introducing a programmable picture quality enhancement architecture to remove the limitations of the conventional model. relumino for people with low vision open theater sustainability / innovation, esg relumino mode enhances video playback to enable people with low vision to enjoy their favorite content. revolutionizing app design and development: prism open theater screen experience, ui/ux, productivity, ai prism and flux revolutionize the design process by automating the transition from design to code. s/w platform for digital appliance: part i. tizenrt tech session home experience, digital appliances, ai, iot introducing a full-fledged software platform for smart appliances that provides technologies for iot and on-device ai./conference/sdc23/sessions/sw-platform-for-digital-appliance-part-i-tizenrt s/w platform for digital appliance: part ii. tizen tech session home experience, digital appliances, tizen samsung's home appliances aim to create a better and more meaningful home ecosystem using the tizen os. samsung wallet: expanding the ecosystem tech session mobile experience, contents&service, productivity, wearable how samsung wallet is expanding and building experiences that improve our daily lives. smartthings and matter tech session platform innovation, iot, open source, developer program get a brief introduction to matter, new enhancements with smartthings, and new developer tools that make it easy to integrate your devices. smartthings enterprise api for multifamily tech session platform innovation, iot, enterprise, digital appliances learn more about the enterprise api, a new way to unlock the power of the smartthings platform for complex, multi-unit environments. smartthings find service update tech session platform innovation, developer program, iot, enterprise updates on the latest smartthings find developements, including smartthings find sdk. smartthings intelligence platform tech session platform innovation, iot, ai introduction to the smartthings intelligence platform and models for presence detection in the home. the role of ai & iot in making classrooms smarter & enabling personalized education open theater sustainability / innovation, iot, ai, esg unlock the future of education with ai & iot. learn how tech is personalizing classrooms. gain insights for your own setting. tizen sdk tech session screen experience, developer program, smarttv, tizen public launch of remote test lab for tv, enabling application testing on various tv models through your web browser. trends & challenges in ai/llm business, and how samsung co-operates with start-ups tech session sustainability / innovation, ai, enterprise, monetization covering trends in ai tech and business (on llm), upcoming regulations, and samsung's innovation efforts with start-ups. what's new and next in watch face studio 2023 tech session mobile experience, wearable, design, mobile let's learn the main new features of watch face studio 2023 and enjoy the new watch face studio plugin experience. what's new in foldables tech session mobile experience, android, mobile discover new possibilities with the large flex window and how to develop applications and widgets for foldables. what's new in tizen 8.0 tech session platform innovation, tizen, smarttv unveiling of the new features in tizen 8.0, elevating both developer and user experiences. what's new in tizen enterprise platform tech session screen experience, enterprise, tizen, productivity sharing the progress of the tizen enterprise platform and highlighting the new tbm portal and uem framework features. why tizen licensing? tech session screen experience, tizen how tizen platform licensing and becoming a samsung partner can enhance your product and business. works with smartthings 2.0 open theater platform innovation, developer program, iot learn how wwst helps your products stand out, perform their best, and how our new tools let you get to market faster. back to 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tutorials blockchain
blogsdks for blockchain developers at samsung, we understand that one size does not fit all of your development needs. that’s why we offer two different sdks to cover your blockchain development needs: samsung blockchain platform (sbp) sdk and samsung blockchain keystore (sbk) sdk. the sbp sdk aims to be an overall solution for your dapp’s every need, from connecting to supported hardware wallets to uploading transactions in the supported blockchain networks. on the other hand, the sbk sdk allows you to securely access the samsung blockchain keystore cold wallet and supports signing transactions of a wide range of cryptocurrencies. samsung blockchain platform sdk the samsung blockchain platform sdk offers a full set of functions for your decentralized app (dapp) or blockchain app needs. it helps you manage blockchain accounts easily and make a transaction easier by using abstracted transfer apis. additionally, the sbp sdk offers a ui-based cryptocurrency payment solution for even more rapid development. the samsung blockchain platform sdk can easily connect your dapp to different hardware wallets for securely signing transactions. currently, three hardware wallets are supported: samsung blockchain keystore, ledger nano x, and ledger nano s. once successfully connected to a hardware wallet, the sbp sdk offers abstracted apis, so you never have to worry about what hardware wallet to which the user is connected. the sbp sdk also has a blockchain browser solution for your web dapp. with the sbp sdk’s cucumber webview, you can migrate your web-based dapp into the mobile environment with little to no changes in your web app. this can help you drastically reduce development time and resources, and to reach millions of new galaxy devices. with the sbp sdk’s payment sheet ui, developing a native android dapp has never been easier. simply launch the desired payment sheet intent and let the sdk take care of the rest of your dapp’s payment or transfer flows. the sbp sdk currently supports two major blockchain networks: ethereum and tron. with the sbp sdk’s abstracted apis for cryptocurrency and token transfers, you never have to worry about complex details. the sbp automatically estimates transaction fees and handles code for underlying smart contract function abis for token transfer. you can simply plug in your json-rpc endpoint/node to the sbp and develop your dapp faster. you can check out all of the aforementioned apis (and more) in action, on the aero wallet sample application for the sbp sdk. using aero wallet’s source code, you can learn how to easily build a fully functional cryptocurrency wallet application from scratch. to learn more about how the sbp sdk can greatly simplify your dapp development, check out the sdk overview. samsung blockchain keystore sdk the samsung blockchain keystore, powered by the knox security platform, is a built-in secure cold wallet available on a wide range of galaxy devices. the samsung blockchain keystore sdk allows your android apps and dapps to communicate directly with this highly secure cold wallet for fetching address lists and public keys and signing cryptocurrency transactions. with the sbk sdk, your dapp can fetch the user’s blockchain address and link it to the user’s account. using this address, you can query on the blockchain network (using a blockchain explorer or another library such as sbp) to find the user’s account balance and transaction history. furthermore, you can use the sbk sdk to request the keystore app to sign a cryptocurrency transaction. the keystore app then shows the requested transaction to the user inside a trusted user interface (tui), executed within the trusted execution environment (tee). once the user approves the transaction with a pin or a biometric authentication like a fingerprint, the keystore app signs the transaction with the associated private key and returns it to you through the sbk sdk. to learn more about how you can integrate the sbk sdk into your app, check out the sdk overview. choosing the right sdk for your dapp both of the samsung blockchain sdks can help make your dapp more feature-rich and cut down development time and effort. if you are still confused about which sdk is best for your dapp, check out our brief comparison below. api samsung blockchain platform sdk samsung blockchain keystore sdk fetch public address supported supported sign transaction supported supported send transaction supported unsupported send token transaction supported unsupported built-in payment screen ui supported unsupported seamless integration with webapps supported unsupported external hardware wallet supported unsupported blockchain networks supported (at the time of writing) ethereum and tron bitcoin, ethereum, klaytn, stellar and tron services for end-users samsung blockchain apps and services aim to provide you with a secure and convenient experience in the blockchain world. samsung currently offers two applications under its blockchain platform: the samsung blockchain keystore app and the samsung blockchain wallet app. you can find out more about each of these offerings from this article and from the global samsung site. samsung blockchain keystore samsung blockchain keystore offers defense-grade, vault-like security for your crypto assets. the blockchain keystore app runs within the tee of the knox platform. this allows the samsung blockchain keystore to provide security unlike ever before, as the private key and information located in the samsung blockchain keystore are never saved to a samsung or an external cloud, nor is it seen by the devices’ android os. you can easily set up the keystore app by importing your existing account by using a 12-word mnemonic, or create an entirely new one. samsung blockchain wallet the samsung blockchain wallet app allows you to conveniently send and receive major cryptocurrencies such as bitcoin and ether. not only does the samsung blockchain wallet app support the built-in samsung blockchain keystore wallet, it also supports external physical wallets such as ledger nano s and nano x, using usb. beyond sending and receiving crypto assets, you can also explore partner dapps through the blockchain wallet app. partner dapps on the samsung blockchain wallet app unlock the door to a wide range of experiences such as cryptocurrency exchanges, staking pools, and nft marketplaces. furthermore, you can stay on top of the latest trends and ongoing events in the blockchain world with the samsung blockchain wallet’s news section. conclusion blockchain technology has the potential to revolutionize many aspects of our lives. with samsung blockchain sdks and applications, you and your dapp users can always stay at the forefront of this technology. we want to continuously improve your experience in the blockchain world. feel free to share your thoughts with us and with the global blockchain developer community on the samsung blockchain developer forum.
Shuvo Saha
Develop Samsung Pay
docbecome a member to become a samsung pay partner, firstly you need to sign up to the samsung pay portal and then register your membership sign up/sign in to sign up as a samsung pay partner and request access to the samsung pay developers site, do the following in your browser, go to samsung pay developers if you already have a samsung account, click log in otherwise, click sign up and create an account a company business email address that won't change over time is recommended as the primary samsung account user id for managing your portal projects agree to the site's terms and conditions and acknowledge that you understand the samsung pay partners privacy policy, then click create a samsung account fill out the onscreen account creation form, making sure to correctly type the security code, then click continue click sign up, enter your samsung account id email address and password, then click sign in look in your email inbox for a welcome message with an account activation link and click the link this opens the developers site registration page complete the company and user profile described in the next step to become a registered samsung pay developer partner register your membership while becoming a member of the samsung pay developer community, you need to provide some information about your company - contact information, type of business, size, etc this information is entered into a company and user profile, which you can subsequently update as changes occur if you are the first one in your company to join samsung pay developers, you will be the principal contact as such, you will be given permissions to manage projects and invite others in your company to collaborate if you are an invited co-worker, you'll need your company's partner id to register follow these steps to register if you are the first samsung pay member of your company to register, select the first option "i am the first samsung pay member of my company" if you were given a samsung pay partner id by a co-worker, select the second option "my company is already registered" and enter your company's partner id in the field provided click next complete the company information form and agree to the terms and conditions of use, then click save and next if you cannot complete the profile at this time, click skip and verify later complete the user information form, then click done; or, if you cannot provide the information at this time, click skip and verify later upon review of the information provided, your samsung pay relationship manager rm may request additional details once your membership registration is approved, you'll be granted access to currently restricted areas of the samsung pay portal and you can invite members of your team to collaborate on your samsung pay projects until then, take advantage of valuable resources like the samsung pay sdk and sdk programming guide from the following link android sdk [in-app payment and push provisioning] https //developer samsung com/pay/native/sdk-overview html web checkout sdk https //developer samsung com/pay/web/overview html w3c mobile payment https //developer samsung com/internet/android/web-payments-integration-guide html when you receive the email notifying you of membership approval, you're ready to get started in your browser, return to the samsung pay portal and sign in set up your partner project when you integrate your project with samsung pay, it is important to have a clear understanding of what is involved for starters, consider the difference between apps and services app an app can be your issuer app or merchant app service a service is a combination of your app, its service type, a csr and a service id your app will pass these information to samsung wallet for partnership verification you can create different service for the same package for multiple purpose testing note that,only one application can be added under one service id for example app deployment scenario unique service-app combinations global issuer app using a different csr encryption key for services in different regions to interact with local servers service 1 = com issuer walletapp, csr1_us service 2 = com issuer walletapp, csr2_plcc_abcmart same issuer app for all customers but different csrs for managing different card services b2b vs plcc service 1 = com issuer walletapp, csr1_regular service 2 = com issuer walletapp, csr2_plcc_abcmart multiple merchant apps using the same pg service 1 = com merchant electronicsapp, csr_pg1 service 2 = com merchant groceryapp, csr_pg1 global merchant app using a different pg for each country service 1 = com merchant electronicsapp, csr_pg1 service 2 = com merchant electronicsapp, csr_pg2 multiple web sites using the same pg service 1 = electronicssite merchant com, csr_pg1 service 2 = grocerysite merchant com, crs_pg1 global merchant web site using a different pg for each country service 1 = electronicsapp merchant com, csr_pg1 service 2 = electronicsapp merchant com, csr_pg2 create new service to create a new service follow the below steps go to my projects > service management or click services management in the navigation panel on the left, then click create new service select for test or for release to define the service for integration with samsung pay, then click next note that, samsung pay will verify all services requested only for release purpose this is to ensure all samsung pay features are functioning correctly and follows samsung pay guideline select your desired service type web online payment service w3c mobile web payments in-app online payment service app to app card enrollment click save and next web online payment service enter the new service name select your service country select your payment gateway from the list of supported payment gateways if your payment gateway uses the network token mode, upload the certificate signing request csr you obtained from your pg supported formats are csr or pem contact your pg for details confirm your agreement with the portal's terms and conditions click the link to read and print , then click done thus, you have completed service configuration for web online payment w3c mobile web payments service enter the new service name select your service country select your payment gateway from the list of supported payment gateways if your payment gateway uses the network token mode, upload the certificate signing request csr you obtained from your pg supported formats are csr or pem contact your pg for details enter the payment domain name s for your website in the service domain field and click add for example, if your domain is mywebstore com but the checkout page is hosted on the subdomain payments mywebstore com, you will need to enter payments mywebstore com as the service domain in the portal for each additional domain name, click add confirm your agreement with the portal's terms and conditions click the link to read and print , then click done thus, you have completed service configuration for w3c mobile web payments in-app online payment service enter the new service name select your service country select your payment gateway from the list of supported payment gateways drag and drop the csr you share with your payment gateway in the box provided or click the paperclip to browse confirm your agreement with the portal's terms and conditions click the link to read and print , then click save and next app to app card enrollment service enter the new service name select your service country add issuer names these correspond to your financial institution/bank's name s registered with the card networks be sure to click the add button after each entry note that, the issuer name on the samsung pay portal and the actual issuer name of the card must match if you cannot confirm the actual issuer name of the card, just add your card to samsung wallet app and see its details information open wallet app > tap on the card > three-dot menu > customer services option under the title you will find the issuer name confirm your agreement with the portal's terms and conditions click the link to read and print , then click save and next for android sdk in-app online payment service and push provisioning service , you have to go through two additional steps- providing app information and setting test environment providing app information if you have already registered an app following register a partner app for android sdk section, select i already registered app information then select the desired app name from the app list you can add a new app on the fly by selecting i will upload new app information click next setting test environment now enter up to 30 test accounts comma-separated these are samsung accounts associated with a registered samsung pay app on a supported device you can always edit the service later to add or delete test accounts click done to save the service configuration and see it listed in your service management dashboard register a partner app for android sdk go to my projects > app management in the navigation panel on the left, then click add new app enter the app name enter its package name to specifically identify this app enter an app description optional; helpful for version control upload the apk file by dragging and dropping it in the corresponding box click the paperclip icon to browse upload representative screenshots showing ui branding elements/buttons in a supported format png, jpeg, gif indicating samsung pay as a supported payment option in your app steps 5 and 6 are required for release versions of your app; not required for initial integration testing click create, then click next at the bottom of the plug-in configuration page your newly added app is now listed in your app management dashboard you can view its details by clicking its app name then, on the app details page, you can edit the app name and description by clicking the corresponding pencil icon
news blockchain
newsan updated version of the samsung blockchain platform sdk has been released. new features in v1.1 include: support tron native tronservice is added for account management and transaction management. trx, trc10, trc20, and smart contract call is supported. new payment ui for tron is added. signing methods for both normal transaction and personal messages are supported. support tron signing with keystore support tron signing with external cold wallet external cold wallet integration is supported. currently it supports nano x, nano s by ledger. update cucumber update web3.js version to 1.2.2. tronweb provider is added.
tutorials blockchain
blogtron is a well-known, blockchain-based, and decentralized platform that aims to create a global decentralized digital content system. by using blockchain technology, tron has established a network between content creators and consumers, which eliminates the need for a middleman between these two parties. because tron is an account-based blockchain system, a transaction in tron is executed by an account and every transaction needs to pass the consensus process, which is known as dpos. in this process, some witnesses are selected according to a vote to verify the transaction. any token holder can vote to select these witnesses. the samsung blockchain platform (sbp) sdk provides an opportunity for android developers to develop applications that can interact with ethereum and tron blockchain platforms. the sbp sdk supports coin transactions as well as smart contracts and tokens like trc-10, trc-20, and so on. this blog describes the process of sending trx (the base coin of the tron platform) using the sbp sdk, with a sample application. for an example of sending ether (the base coin of the ethereum platform), see send ether with samsung blockchain platform sdk. prerequisites for developing a sample application that can perform trx transactions, the following actions must be performed before the transaction takes place. initialize the object connect to a hardware wallet get accounts each of these actions of the application has been implemented with a corresponding button so that the results of each action can be more visible and clearly illustrated. initialize the object to use the apis of the sdk in an android project, an object of the sdk is required. to create the object, follow the steps below. create a new android project and integrate the sbp sdk with the application. all dependencies need to be mentioned in the build.gradle file. to complete this step follow these instructions. after completing the synchronization of build.gradle with the file system, the project is ready for creating an instance of the sblockchain class. relevant source code can be found here. connect to a hardware wallet a hardware wallet is a storage device with the facility of authentication for securely storing the public-private key pair. there are several hardware wallets in the market, and samsung provides a hardware wallet integrated with select samsung mobile devices, known as the samsung blockchain keystore. sbp provides an interface to connect hardware wallets. alongside the samsung blockchain keystore, sbp currently supports ledger nano x and ledger nano s. connect your application with a hardware wallet using the following code. in this article, the samsung blockchain keystore has been used as the hardware wallet. while running the sample application on your device, please ensure you meet the device restrictions of the samsung blockchain keystore. you can also change the hardware wallet type and test the same application with other supported hardware wallets. get accounts an account is an important protocol of tron. it functions as a gateway to interact with the tron blockchain. your trx balance, token balance, bandwidth, energy, and so on are all attached to your account. trx balance can be sent from one account to another. moreover, an account can issue a smart contract. tron accounts also provide the facility to vote for super representatives. to learn more about super representatives and voting, see the tron documentation. every account consists of a private and public key pair. an account remains deactivated until a trx or token transaction is performed. creating an account consumes frozen bandwidth points. if none are available, then the action burns 0.1 trx instead. if you want to know more about the underlying algorithm and the process of creating an account, see the tron account documentation. the sbp sdk allows you to create a new account or restore existing accounts from the tron network. restoring and creating accounts are network operations. for more information, see the account management guide for the sbp sdk. it discusses generating, restoring and fetching accounts using the sdk. if you have no trx in your account, you can get some by purchasing from the sites listed here or get test trx. trx transaction let's send trx from your account to another account. the sbp sdk provides an api called sendtransaction to perform a transaction between two accounts. this api needs four parameters. wallet: a connected hardware wallet. fromaccount: the sender’s tron account. toaddress: where you want to transfer your trx to, taking the address as a string. value: how much trx you want to transfer. input unit is sun (1 trx= 10^6 sun). the coinservice class called tronservice provides the sendtransaction api for transactions on the tron platform. in addition, a remote procedure call (rpc) is required to communicate with the tron node. we are going to use trongrid for this purpose, which allows developers to access a tron client that is running on the cloud instead of creating one. you can learn more about the trongrid here. before completing the example transaction, some terminology related to transactions, like bandwidth and energy, are discussed. networktype networktype = tronnetworktype.shasta; cointype cointype = cointype.trx; //shasta rpc string rpc = "https://api.shasta.trongrid.io"; // creating coinnetworkinfo coinnetworkinfo mcoinnetworkinfo = new coinnetworkinfo(cointype, networktype, rpc); //creating coinservice coinservice mcoinservice = coinservicefactory.getcoinservice(getapplicationcontext(), mcoinnetworkinfo); //creating tronservice tronservice tronservice = (tronservice) mcoinservice; fetch trx balance trx is the primary currency of tron. it can be used to obtain bandwidth, energy, or power. the sbp sdk provides the getbalance api for fetching the balance of an account. public void onclickgetbalance(view view) { mcoinservice = coinservicefactory.getcoinservice(getapplicationcontext(), mcoinnetworkinfo); textview trxamounttextview = findviewbyid(r.id.amount_tron); mcoinservice.getbalance(mfirstaccount).setcallback(new listenablefuturetask.callback<biginteger>() { @override public void onsuccess(biginteger biginteger) { convertedamount = tronutils.convertsuntotrx(biginteger); log.i(log_tag, "balance has fetched successfully."); log.i(log_tag, "balance is:" + convertedamount.tostring()); runonuithread(() -> { accountinfobutton.setenabled(true); trxamounttextview.settext(convertedamount.tostring()); } ); } @override public void onfailure(@notnull executionexception e) { log.e(log_tag, "fetching balance is failed."); log.e(log_tag, "" + e.getmessage()); } @override public void oncancelled(@notnull interruptedexception e) { log.e(log_tag, "fetching balance is canceled."); } }); } fetch bandwidth and energy tron implements some new and interesting features named freeze, bandwidth, and energy. you can freeze some of your trx balance to gain bandwidth and energy. for every frozen trx, the user receives 1 tron power which is needed to cast a vote on super representatives. after freezing some of your trx, it is not possible to use these trx until they are unfrozen. bandwidth is used as a fee for trx transactions. energy is needed to execute smart contracts. the sbp sdk only provides an api to get a frozen balance amount. you can freeze trx and gain bandwidth and energy using tronscan. tronscan is a blockchain explorer, which allows anyone to explore addresses, transactions, and tokens in the tron blockchain. the sbp sdk provides the getaccountinfo api for fetching bandwidth, energy and power (frozen balance) information. the input parameter is the account address of the sender. in the sample application, after pressing the account info button, the asynchronous task returns this information, which is set on a text view in the ui. public void onclickaccountinfo(view view) { tronservice = (tronservice) mcoinservice; try { tronservice.getaccountinfo(mfirstaccount.getaddress()).setcallback(new listenablefuturetask.callback<tronaccountinfo>() { @override public void onsuccess(tronaccountinfo tronaccountinfo) { log.i(log_tag, "account info is fetched successfully."); log.i(log_tag, "bandwidth is:" + tronaccountinfo.getbandwidth()); log.i(log_tag, "power is:" + tronaccountinfo.getfrozenbalance()); runonuithread(() -> { sendbutton.setenabled(true); bandwidthtextview.settext(tronaccountinfo.getbandwidth().tostring()); powertextview.settext(tronaccountinfo.getfrozenbalance().tostring()); } ); } @override public void onfailure(@notnull executionexception e) { log.e(log_tag, "fetching account info is failed."); log.e(log_tag, "" + e.getmessage()); } @override public void oncancelled(@notnull interruptedexception e) { log.e(log_tag, "fetching account info is canceled."); } }); } catch (exception e) { log.e(log_tag, "error in fetching account info: " + e); } } after fetching bandwidth and energy, we can check them on the sample application ui. transfer trx now we have all the parameters needed for sending trx. the sendtransaction api is used to transfer trx to the recipient. if the transaction is successful, the onsuccess() callback returns the transaction hash. every transaction in the tron blockchain can be found in tronscan. public void onclicksend(view view) { if (toaddress.isempty() || amount.isempty()) { toast.maketext(getapplicationcontext(), "fill toaddress and amount field", toast.length_short).show(); } else if(!tronservice.isvalidaddress(toaddress)){ toast.maketext(getapplicationcontext(), "invalid address.", toast.length_short).show(); } else { bigdecimal sendamount = new bigdecimal(amount); biginteger convertedsendamount = tronutils.converttrxtosun(sendamount); try { tronservice.sendtransaction(mhardwarewallet, (tronaccount) mfirstaccount, toaddress, convertedsendamount).setcallback(new listenablefuturetask.callback<transactionresult>() { @override public void onsuccess(transactionresult transactionresult) { log.d(log_tag, "transaction hash: " + transactionresult.gethash()); runonuithread(() -> toast.maketext(getapplicationcontext(), "transaction hash: " + transactionresult.gethash(), toast.length_short).show() ); } @override public void onfailure(@notnull executionexception e) { log.e(log_tag, "transaction failed."); log.e(log_tag, "" + e.getmessage()); } @override public void oncancelled(@notnull interruptedexception e) { log.e(log_tag, "transaction canceled."); } }); } catch (availabilityexception e) { log.e(log_tag, "error in sending: " + e); } } } now that you can send trx to another account, you can create your wallet application and implement a transfer function using the sbp sdk. keep an eye on the samsung developers site for updates as the samsung blockchain keeps expanding support for new platforms. additional resources: download the sbp sdk transaction sample app more information on the sbp sdk follow up this site has many resources for developers looking to build for and integrate with samsung devices and services. stay in touch with the latest news by creating a free account or by subscribing to our monthly newsletter. visit the marketing resources page for information on promoting and distributing your apps. finally, our developer forum is an excellent way to stay up-to-date on all things related to the galaxy ecosystem.
M.A. Hasan Molla
Develop Samsung Blockchain
dockeystore introduction key players in the blockchain industry user, wallet and node in the blockchain industry, there are a few important key players user, wallet, and node the user can use the blockchain technology to send or receive cryptocurrencies a user can be an active user of blockchain-based applications, also known as dapps decentralized app to raise a crypto asset, like a cute character in a game the user may also post an interesting article on a blockchain-based sns, where the user gets credits for the number of likes or comments from other users all of these use cases require the user to connect to the blockchain network wallet or dapps provide the user an interface to connect to the blockchain network, such as bitcoin or ethereum unlike the traditional wallets, blockchain wallets do not hold any money or an asset of the user, but simply show users a record of all transactions on the ledger that are related to the user’s account when a user tries to send a certain amount of cryptocurrency to another user, the wallet creates a transaction in a correct format to submit to the blockchain network one of the key components of a transaction is a user’s signature a wallet must be able to sign a transaction with the user’s private key some wallets generate a key pair in the wallet by itself and sign the transaction upon user’s request some may not generate the key pair itself, but instead, support the use of a separate hardware wallet, which will store the key and complete the signature part of a blockchain transaction nevertheless, because there is a fee that must be paid in order to write on the ledger of the blockchain network, a user’s signature that implies that the user has checked and approved the fee, cannot be emphasized enough lastly, when a wallet or a dapp submits the signed transaction to the blockchain network, nodes, similar to server, checks the validity of the transaction and use a consensus protocol to agree whether to include the received transaction in the ledger or not if it is included, then the transaction is now shared to everyone participating in the network digital signature in blockchain using a digital signature in the blockchain is one of the fundamentals to understand the technology the user’s digital signature implies many things by signing the transaction, the user is confirming that the information in the transaction, such as the recipient address, amount, and fee, are all correct the signature also guarantees the identity of the user only the user that actually holds the key can sign the transaction, because there will be a different result if a different key was used to sign the transaction digital signature provides non-repudiation as well, since it is a combination of the user’s key and the contents, thereby the user cannot deny its existence because there is no centralized server that controls the network in blockchain, it is impossible to cancel or reverse a transaction that has been submitted to the network hence, the biggest challenge that the wallets and dapps face is how to sign a transaction safely to sign a transaction, a user’s private key is needed in other words, the user’s private key is what must be kept in a safe place moreover, the execution environment, where the signing is happening, must be also safe advent of hardware wallets to avoid the security threats of computer viruses and other remote dangers in the web environment, hardware wallet came out into the world along with a print out, or a paper wallet, hardware wallet is one of the choices of cold wallet, a wallet that is not connected to the internet a hardware wallet usually has a separate space to create, store and use the private key in such an isolated environment, hardware wallets are invulnerable to remote attacks hardware wallets also have a separate secure display to get user’s confirmation of the blockchain transaction the information shown by the hardware wallet’s screen is independently displayed from the host that it is connected to, such as the computer yet, there are usability issues when it comes to using a hardware wallet the user must carry the wallet around and make sure to keep that hardware wallet in a safe place also, the complexities and inconvenience of plugging the hardware wallet usb and running an online web app on the computer, and using the hardware wallet to sign a transaction still remain as a challenge samsung blockchain keystore launched with galaxy s10 series at the beginning of the year 2019, samsung blockchain keystore was launched with the galaxy s10 series to store the user’s private key in the secure area of the phone and sign blockchain transactions in a safe environment as a preloaded feature on selected devices in selected countries, samsung blockchain keystore aims to contribute to the blockchain ecosystem to help users and blockchain apps leverage security features of the device and thus, safely use blockchain technology on the mobile samsung blockchain keystore can be found by going to the device’s settings > biometric and security under the security category, you will see “samsung blockchain keystore ” with the samsung blockchain keystore app, users can leverage features including key management, signing a transaction, setting up a pin and a fingerprint as an authentication method, and managing samsung blockchain keystore settings options more details on each feature are as follows ① key management the user can create a new key pair public and private key or import an existing one that was created from other wallets more specifically, samsung blockchain keystore supports bip-39 bitcoin improvement proposal standard, and is a hd hierarchical deterministic wallet more details will be covered in the key management section in the set up page, “create a new wallet” means generating a root seed, that can derive both a public key and a private key used to make blockchain-based transactions, payments or contracts in decentralized apps or other wallet services that have integrated with samsung blockchain keystore because this root seed is about 128 to 256 bits of 0 and 1, and is not friendly to read nor remember, 12 to 24 words of recovery phrase can replace the root seed anyone who knows the recovery phrase can access and sign the blockchain transactions so the user will need to write down the 12 words and make sure not to lose it note that once the process is complete, samsung blockchain keystore will never ask the user to enter all the words again “import an existing wallet” means the user already has 12 to 24 words of recovery phrase, created in samsung blockchain keystore on a different device, or from other wallets that support bip-39 standard once the user enters the correct words of recovery phrase, the wallet will be imported and the set up process is complete likewise, once the process is complete, samsung blockchain keystore will never ask the user to enter all the words again ② sign a transaction user can send cryptocurrency or purchase a crypto item in blockchain apps that have been integrated with samsung blockchain keystore in the midst of a blockchain transaction, user can check information of the transaction, such as the recipient address, sending amount and the associated fee on a confirmation screen user can then confirm the transaction for signing by authenticating either using fingerprint or by entering a six-digit pin over a secure screen, called trusted user interface tui executed by samsung blockchain keystore ③ pin and fingerprint management during the process of setting up a wallet, the user will need to set up a six-digit pin to protect the crypto assets a pin is a verification method for cryptocurrency transaction, payment and smart contract in samsung blockchain keystore-integrated services if the user has a fingerprint registered on the device, then the user can also set up a fingerprint as the alternative authentication method the pin or fingerprint will be asked every time a user wants to sign a blockchain transaction, check confidential information, like the recovery phase, or change pin ④ manage samsung blockchain keystore once the user has set up the wallet, when the user clicks “samsung blockchain keystore” menu in the device’s settings biometric and security , the user will land on samsung blockchain keystore’s main page, where the user can manage samsung blockchain keystore-related options the user can change the pin, enable or disable fingerprint as an authentication method, check recovery phrase and reset samsung blockchain keystore other things, such as setting alarm notifications or connecting to a channel to send questions or comments to samsung blockchain team can be found here as well more information, such as how to use, or notices from samsung blockchain team, terms and conditions, and other information related to samsung blockchain keystore are also available what will be covered? throughout this site, we will look deep into the samsung blockchain keystore the following items will be discussed security considerations when building samsung blockchain keystore and bringing the blockchain ecosystem onto the mobile overall architecture of how samsung blockchain keystore is designed and end-to-end service flow, including the exact role of samsung blockchain keystore sdk that will be integrated into your app security measures including the execution environment and how keys are generated will be explained in detail benefits for developers integrating samsung blockchain keystore sdk and what kind of services we welcome
Develop Samsung Blockchain
websamsung blockchain samsung blockchain sdks bring developers and consumers to the blockchain world. explore sdks explore easy-to-use and extra secure samsung blockchain sdks. checkout technical documents, resources, programming guides and other useful materials for keystore sdk & platform sdk. explore keystore sdk samsung blockchain keystore sdk allows your android app and dapp to communicate directly with samsung blockchain keystore. explore platform sdk samsung blockchain platform sdk provide a full set of functions that the decentralized app (dapp) needs. apply for dapp listing follow the dapp registration request process. learn more samsung blockchain. simple and trust proven. eco / content partners samsung blockchain is continuing to collaborate with industry partners to expand and improve the blockchain ecosystem experience for our consumers. klaytn tron gemini stellar sktelecom initial d.street adappter samsung blockchain also welcomes decentralized apps (dapps). now, you can easily integrate dapps to the samsung blockchain wallet and be part of the growing mobile-based samsung blockchain eco. apply for dapp listing forum looking for a community?meet other developers. ask questions. find answers. go to forum tech support if you have a general support request, please click the link below to submit a request. our team of experts will respond as soon as possible. submit a request featured videos samsung developers youtube [kor] what is blockchain & did? [kor] korea blockchain week 2020 - samsung electronics [kor]2020 jeju blockchain hackathon (business camp) [kor]2020 jeju blockchain hackathon (intro) [kor]2020 founders 3rd hackathon with samsung blockchain [v-log] [kor]2020 founders 3rd hackathon with samsung blockchain [eng]samsung blockchain intro [eng]welcome to the samsung blockchain galaxy (devcon5) [eng]introduction to samsung blockchain platform sdk (sdc19 - platform sdk) [kor]is your blockchain app secure? (techtonic2019 - keystore sdk) [eng]is your blockchain app secure? (sdc19 - keystore sdk) [kor] korea blockchain week 2019 - samsung electronics
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