Chilkat HOME .NET Core C# Android™ AutoIt C C# C++ Chilkat2-Python CkPython Classic ASP DataFlex Delphi ActiveX Delphi DLL Go Java Lianja Mono C# Node.js Objective-C PHP ActiveX PHP Extension Perl PowerBuilder PowerShell PureBasic Ruby SQL Server Swift 2 Swift 3,4,5... Tcl Unicode C Unicode C++ VB.NET VBScript Visual Basic 6.0 Visual FoxPro Xojo Plugin
(Unicode C) Walmart Partner API Authentication (Generate a Signature for a Request)Demonstrates how to generate a signature for a Walmart Partner REST API call.
#include <C_CkDateTimeW.h> #include <C_CkStringBuilderW.h> #include <C_CkPrivateKeyW.h> #include <C_CkRsaW.h> void ChilkatSample(void) { BOOL success; const wchar_t *consumerId; const wchar_t *baseUrl; const wchar_t *privateEncodedStr; const wchar_t *httpMethod; HCkDateTimeW dt; BOOL bLocal; int timeStampVal; HCkStringBuilderW sbStringToSign; HCkPrivateKeyW privKey; HCkRsaW rsa; const wchar_t *signatureString; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. consumerId = L"b68d2a72...."; baseUrl = L"https://marketplace.walmartapis.com/v2/feeds"; // This is your Base64 encoded private key privateEncodedStr = L"MIICeAIBADANBgkqhkiG9w0BAQEFAA......"; httpMethod = L"GET"; // We need a timestamp in decimal string form representing the number of milliseconds since Jan 01 1970 UTC. dt = CkDateTimeW_Create(); // Set bLocal = TRUE for a timestamp in the local timezone. Set bLocal = FALSE for a UTC timestamp. bLocal = FALSE; // This gets the timestamp in seconds, not milliseconds. timeStampVal = CkDateTimeW_GetAsUnixTime(dt,bLocal); // Build the string to sign. sbStringToSign = CkStringBuilderW_Create(); CkStringBuilderW_Append(sbStringToSign,consumerId); CkStringBuilderW_Append(sbStringToSign,L"\n"); CkStringBuilderW_Append(sbStringToSign,baseUrl); CkStringBuilderW_Append(sbStringToSign,L"\n"); CkStringBuilderW_Append(sbStringToSign,httpMethod); CkStringBuilderW_Append(sbStringToSign,L"\n"); CkStringBuilderW_AppendInt(sbStringToSign,timeStampVal); // We add three zero's so that the timestamp value is in milliseconds. // We don't care about accuracy down to less than a second. // All the server cares about is that the request was signed at the current date/time // within some reasonable margin of error (to account for systems having clocks // that may be slightly different). CkStringBuilderW_Append(sbStringToSign,L"000\n"); privKey = CkPrivateKeyW_Create(); // Load the private key into a private key object. // Note: Technically the private key is not PEM because it lacks the header/footer strings // used for PEM. However, the LoadPem method will still accept it and load it correctly. success = CkPrivateKeyW_LoadPem(privKey,privateEncodedStr); if (success != TRUE) { wprintf(L"%s\n",CkPrivateKeyW_lastErrorText(privKey)); CkDateTimeW_Dispose(dt); CkStringBuilderW_Dispose(sbStringToSign); CkPrivateKeyW_Dispose(privKey); return; } rsa = CkRsaW_Create(); success = CkRsaW_ImportPrivateKeyObj(rsa,privKey); if (success != TRUE) { wprintf(L"%s\n",CkRsaW_lastErrorText(rsa)); CkDateTimeW_Dispose(dt); CkStringBuilderW_Dispose(sbStringToSign); CkPrivateKeyW_Dispose(privKey); CkRsaW_Dispose(rsa); return; } // We want a base64 signature string. CkRsaW_putEncodingMode(rsa,L"base64"); signatureString = CkRsaW_signStringENC(rsa,CkStringBuilderW_getAsString(sbStringToSign),L"SHA256"); if (CkRsaW_getLastMethodSuccess(rsa) != TRUE) { wprintf(L"%s\n",CkRsaW_lastErrorText(rsa)); CkDateTimeW_Dispose(dt); CkStringBuilderW_Dispose(sbStringToSign); CkPrivateKeyW_Dispose(privKey); CkRsaW_Dispose(rsa); return; } wprintf(L"Signature String: %s\n",signatureString); CkDateTimeW_Dispose(dt); CkStringBuilderW_Dispose(sbStringToSign); CkPrivateKeyW_Dispose(privKey); CkRsaW_Dispose(rsa); } |
© 2000-2024 Chilkat Software, Inc. All Rights Reserved.