Unicode C

RSA Sign utf-8 Byte Representation of String

See more RSA Examples

Demontstrates how to sign the utf-8 byte representation of a string. Unicode C

#include <C_CkPrivateKeyW.h>
#include <C_CkRsaW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkPrivateKeyW privKey;
    HCkRsaW rsa;
    const wchar_t *originalData;
    const wchar_t *sigBase64;

    success = FALSE;

    // 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 == FALSE) {
        wprintf(L"%s\n",CkPrivateKeyW_lastErrorText(privKey));
        CkPrivateKeyW_Dispose(privKey);
        return;
    }

    rsa = CkRsaW_Create();
    success = CkRsaW_UsePrivateKey(rsa,privKey);
    if (success == FALSE) {
        wprintf(L"%s\n",CkRsaW_lastErrorText(rsa));
        CkPrivateKeyW_Dispose(privKey);
        CkRsaW_Dispose(rsa);
        return;
    }

    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);

    }