(MFC) Password_Digest = Base64 (SHA-1 ( nonce + created + SHA-1 (password) ) )

Demonstrates how to compute:

Password_Digest = Base64 (SHA-1 ( nonce + created + SHA-1 (password)))

Chilkat C/C++ Library Downloads MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

#include <CkCrypt2.h>
#include <CkPrng.h>
#include <CkBinData.h>
#include <CkDateTime.h>

void ChilkatSample(void)
    {
    CkString strOut;

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

    const char *password = "secret";

    CkCrypt2 crypt;
    crypt.put_HashAlgorithm("SHA-1");
    crypt.put_EncodingMode("base64");

    //  Generate a 16-byte random nonce
    CkPrng prng;
    CkBinData bd;
    prng.GenRandomBd(16,bd);

    //  Get the current date/time in a string with this format: 2010-06-08T07:26:50Z
    CkDateTime dt;
    dt.SetFromCurrentSystemTime();
    const char *created = dt.getAsTimestamp(false);
    bd.AppendString(created,"utf-8");

    //  This example wishes to calculate a password digest like this:
    //  Password_Digest = Base64 ( SHA-1 ( nonce + created + SHA-1(password) ) )

    //  First SHA-1 digest the password...
    const char *passwordSha1 = crypt.hashStringENC(password);
    //  Append the 20 binary bytes of the SHA1 hash to bd, which already contains the nonce and created date/time.
    bd.AppendEncoded(passwordSha1,"base64");

    const char *passwordDigest = crypt.hashBdENC(bd);

    strOut.append("Base64 password digest = ");
    strOut.append(passwordDigest);
    strOut.append("\r\n");


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }