C

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

See more Encryption Examples

Demonstrates how to compute:

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

C

#include <C_CkCrypt2.h>
#include <C_CkPrng.h>
#include <C_CkBinData.h>
#include <C_CkDateTime.h>

void ChilkatSample(void)
    {
    const char *password;
    HCkCrypt2 crypt;
    HCkPrng prng;
    HCkBinData bd;
    HCkDateTime dt;
    const char *created;
    const char *passwordSha1;
    const char *passwordDigest;

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

    password = "secret";

    crypt = CkCrypt2_Create();
    CkCrypt2_putHashAlgorithm(crypt,"SHA-1");
    CkCrypt2_putEncodingMode(crypt,"base64");

    // Generate a 16-byte random nonce
    prng = CkPrng_Create();
    bd = CkBinData_Create();
    CkPrng_GenRandomBd(prng,16,bd);

    // Get the current date/time in a string with this format: 2010-06-08T07:26:50Z
    dt = CkDateTime_Create();
    CkDateTime_SetFromCurrentSystemTime(dt);
    created = CkDateTime_getAsTimestamp(dt,FALSE);
    CkBinData_AppendString(bd,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...
    passwordSha1 = CkCrypt2_hashStringENC(crypt,password);
    // Append the 20 binary bytes of the SHA1 hash to bd, which already contains the nonce and created date/time.
    CkBinData_AppendEncoded(bd,passwordSha1,"base64");

    passwordDigest = CkCrypt2_hashBdENC(crypt,bd);

    printf("Base64 password digest = %s\n",passwordDigest);


    CkCrypt2_Dispose(crypt);
    CkPrng_Dispose(prng);
    CkBinData_Dispose(bd);
    CkDateTime_Dispose(dt);

    }