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(Unicode C) RSA Sign utf-8 Byte Representation of StringDemontstrates how to sign the utf-8 byte representation of a string.
#include <C_CkPrivateKeyW.h> #include <C_CkRsaW.h> void ChilkatSample(void) { HCkPrivateKeyW privKey; BOOL success; HCkRsaW rsa; const wchar_t *originalData; const wchar_t *sigBase64; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // Load an RSA private key for signing. privKey = CkPrivateKeyW_Create(); success = CkPrivateKeyW_LoadEncryptedPemFile(privKey,L"qa_data/pem/rsa_passwd.pem",L"passwd"); if (success != TRUE) { wprintf(L"%s\n",CkPrivateKeyW_lastErrorText(privKey)); CkPrivateKeyW_Dispose(privKey); return; } rsa = CkRsaW_Create(); CkRsaW_ImportPrivateKeyObj(rsa,privKey); originalData = L"This is the string to be hashed an RSA signed."; // Indicate that we want the utf-8 byte representation of the string to be signed CkRsaW_putCharset(rsa,L"utf-8"); // We want the RSA signature in base64 format CkRsaW_putEncodingMode(rsa,L"base64"); sigBase64 = CkRsaW_signStringENC(rsa,originalData,L"sha256"); wprintf(L"%s\n",sigBase64); CkPrivateKeyW_Dispose(privKey); CkRsaW_Dispose(rsa); } |
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