(Unicode C) Base64url Encoding

Base64url encoding is identical to base64 encoding except it uses non-reserved URL characters (e.g. '–' is used instead of '+', and '_' is used instead of '/') and it omits the padding characters.

Note: This example requires Chilkat v11.0.0 or greater.

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

void ChilkatSample(void)
    {
    BOOL success;
    HCkPrivateKeyW pkey;
    HCkRsaW rsa;
    const wchar_t *strData;
    const wchar_t *strSig;

    success = FALSE;

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    pkey = CkPrivateKeyW_Create();
    rsa = CkRsaW_Create();
    CkRsaW_GenKey(rsa,1024,pkey);
    CkRsaW_UsePrivateKey(rsa,pkey);

    strData = L"This is the string to be signed.";

    // Get the signature in base64url
    CkRsaW_putEncodingMode(rsa,L"base64url");
    strSig = CkRsaW_signStringENC(rsa,strData,L"sha256");

    wprintf(L"%s\n",strSig);


    CkPrivateKeyW_Dispose(pkey);
    CkRsaW_Dispose(rsa);

    }