(Unicode C++) RSA Sign using Base64 Private Key

Signs a string using a non-encrypted RSA private key in base64 encoding. Returns the RSA signature as a base64 string.

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#include <CkPrivateKeyW.h>
#include <CkStringBuilderW.h>
#include <CkRsaW.h>

void ChilkatSample(void)
    {
    //  This requires the Chilkat API to have been previously unlocked.
    //  See Global Unlock Sample for sample code.

    CkPrivateKeyW privKey;
    bool success;

    CkStringBuilderW sbPem;
    sbPem.AppendLine(L"-----BEGIN RSA PRIVATE KEY-----",true);
    sbPem.AppendLine(L"MIIC .... j5A==",true);
    sbPem.AppendLine(L"-----END RSA PRIVATE KEY-----",true);

    success = privKey.LoadPem(sbPem.getAsString());
    if (success != true) {
        wprintf(L"%s\n",privKey.lastErrorText());
        return;
    }

    CkRsaW rsa;

    success = rsa.ImportPrivateKeyObj(privKey);
    if (success != true) {
        wprintf(L"%s\n",rsa.lastErrorText());
        return;
    }

    rsa.put_EncodingMode(L"base64");
    const wchar_t *strSigned = rsa.openSslSignStringENC(L"12345678");
    wprintf(L"%s\n",strSigned);

    const wchar_t *strOriginal = rsa.openSslVerifyStringENC(strSigned);
    wprintf(L"%s\n",strOriginal);
    }