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) Compute JWK Thumbprint for RSA and EC Public KeysDemonstrates how to compute a JSON Web Key thumbprint for a public key (RSA or ECC). Note: This example requires Chilkat v9.5.0.66 or greater.
#include <C_CkPublicKeyW.h> #include <C_CkStringBuilderW.h> void ChilkatSample(void) { HCkPublicKeyW pubKey; HCkStringBuilderW sb; BOOL success; pubKey = CkPublicKeyW_Create(); // A public key can be loaded from any format (binary DER, PEM, etc.) // This example will load the public keys from JWK format, // and will then compute the JWK thumbprint. // First do it for an RSA public key... sb = CkStringBuilderW_Create(); CkStringBuilderW_Append(sb,L"{"); CkStringBuilderW_Append(sb,L"\"kty\": \"RSA\","); CkStringBuilderW_Append(sb,L"\"n\": \"0vx7agoebGcQSuuPiLJXZptN9nndrQmbXEps2aiAFbWhM78LhWx4cbbfAAt"); CkStringBuilderW_Append(sb,L"VT86zwu1RK7aPFFxuhDR1L6tSoc_BJECPebWKRXjBZCiFV4n3oknjhMstn6"); CkStringBuilderW_Append(sb,L"4tZ_2W-5JsGY4Hc5n9yBXArwl93lqt7_RN5w6Cf0h4QyQ5v-65YGjQR0_FD"); CkStringBuilderW_Append(sb,L"W2QvzqY368QQMicAtaSqzs8KJZgnYb9c7d0zgdAZHzu6qMQvRL5hajrn1n9"); CkStringBuilderW_Append(sb,L"1CbOpbISD08qNLyrdkt-bFTWhAI4vMQFh6WeZu0fM4lFd2NcRwr3XPksINH"); CkStringBuilderW_Append(sb,L"aQ-G_xBniIqbw0Ls1jF44-csFCur-kEgU8awapJzKnqDKgw\","); CkStringBuilderW_Append(sb,L"\"e\": \"AQAB\","); CkStringBuilderW_Append(sb,L"\"alg\": \"RS256\","); CkStringBuilderW_Append(sb,L"\"kid\": \"2011-04-29\""); CkStringBuilderW_Append(sb,L"}"); // The JWK format is automatically detected.. success = CkPublicKeyW_LoadFromString(pubKey,CkStringBuilderW_getAsString(sb)); if (success != TRUE) { wprintf(L"%s\n",CkPublicKeyW_lastErrorText(pubKey)); CkPublicKeyW_Dispose(pubKey); CkStringBuilderW_Dispose(sb); return; } // Get the JWK thumbprint (using SHA256) wprintf(L"JWK thumbprint: %s\n",CkPublicKeyW_getJwkThumbprint(pubKey,L"SHA256")); // Output: // JWK thumbprint: NzbLsXh8uDCcd-6MNwXF4W_7noWXFZAfHkxZsRGC9Xs // -------------------------------------------------------------- // Now let's do an EC public key: CkStringBuilderW_Clear(sb); CkStringBuilderW_Append(sb,L"{ "); CkStringBuilderW_Append(sb,L" \"kty\": \"EC\","); CkStringBuilderW_Append(sb,L" \"crv\": \"P-256\","); CkStringBuilderW_Append(sb,L" \"x\": \"tDeeYABgKEAbWicYPCEEI8sP4SRIhHKcHDW7VqrB4LA\","); CkStringBuilderW_Append(sb,L" \"y\": \"J08HOoIZ0rX2Me3bNFZUltfxIk1Hrc8FsLu8VaSxsMI\""); CkStringBuilderW_Append(sb,L"}"); success = CkPublicKeyW_LoadFromString(pubKey,CkStringBuilderW_getAsString(sb)); if (success != TRUE) { wprintf(L"%s\n",CkPublicKeyW_lastErrorText(pubKey)); CkPublicKeyW_Dispose(pubKey); CkStringBuilderW_Dispose(sb); return; } // Get the JWK thumbprint (using SHA256) wprintf(L"JWK thumbprint: %s\n",CkPublicKeyW_getJwkThumbprint(pubKey,L"SHA256")); // Output: // JWK thumbprint: 8fm8079s3nu4FLV_7dVJoJ69A8XCXn7Za2mtaWCnxR4 CkPublicKeyW_Dispose(pubKey); CkStringBuilderW_Dispose(sb); } |
© 2000-2024 Chilkat Software, Inc. All Rights Reserved.