C

HMAC with SHA256

See more Encryption Examples

Demonstrates how to compute a HMAC SHA256 keyed-hash message authentication code. 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,"sha256");
    CkCrypt2_putMacAlgorithm(crypt,"hmac");

    // Set the HMAC key:
    CkCrypt2_SetMacKeyEncoded(crypt,"The_API_Secret","ascii");
    mac = CkCrypt2_macStringENC(crypt,"The quick brown fox jumps over the lazy dog");
    printf("%s\n",mac);


    CkCrypt2_Dispose(crypt);

    }