(C) HMAC MD5 to Match RFC 2022 Test Vectors

Demonstrates using Chilkat in C to computer HMAC MD5 message authentication codes to match the test vectors given by RFC 2202.

Chilkat C/C++ Library Downloads
MS Visual C/C++ C++ Builder Linux C/C++ Alpine Linux C/C++	MacOS C/C++ iOS C/C++ Android C/C++ MinGW C/C++

#include <C_CkCrypt2.h>

void ChilkatSample(void)
    {
    HCkCrypt2 crypt;
    const char *mac;

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

    crypt = CkCrypt2_Create();

    // The output will be Hex, so set the EncodingMode:
    CkCrypt2_putEncodingMode(crypt,"hex");

    // Set the hash algorithm:
    // Choices are: md5, sha-1, sha256, sha384, sha512, md2, haval
    CkCrypt2_putHashAlgorithm(crypt,"md5");

    // Set the HMAC key:
    CkCrypt2_SetHmacKeyEncoded(crypt,"0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b","hex");
    mac = CkCrypt2_hmacStringENC(crypt,"Hi There");
    printf("%s\n",mac);

    CkCrypt2_SetHmacKeyEncoded(crypt,"Jefe","ansi");
    mac = CkCrypt2_hmacStringENC(crypt,"what do ya want for nothing?");
    printf("%s\n",mac);


    CkCrypt2_Dispose(crypt);

    }