(C++) PBKDF2 - Derive Key from Password

Demonstrates how to derive a symmetric encryption key from a password using PBKDF2.

For more information, see https://www.chilkatsoft.com/key_derivation_pbkdf2.asp

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#include <CkCrypt2.h>

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

    CkCrypt2 crypt;

    const char *pw = "password";

    const char *pwCharset = "utf-8";

    // Such as sha256, sha512
    const char *hashAlg = "sha256";

    // 16 bytes
    const char *saltHex = "78578E5A5D63CB0668AB39B21C8637FA";

    int iterationCount = 100000;

    // Derive a 256-bit key from the password.
    int outputBitLen = 256;

    // The derived key is returned as a hex or base64 encoded string.
    // (Note: The salt argument must be a string that also uses
    // the same encoding.)
    const char *enc = "hex";

    const char *hexKey = crypt.pbkdf2(pw,pwCharset,hashAlg,saltHex,iterationCount,outputBitLen,enc);

    std::cout << hexKey << "\r\n";

    // Sample output:
    // AE96E261E32792D0FD6F0E72F8E872D046F7DB4C1FA7C83892EC73C49F461B70
    }