Generate Secret Key from Password

The GenEncodedSecretKey method provides a way to produce a secret key from an arbitrarily sized password string. The secret key produced will be equal in bit length to the KeyLength. A given string passed to GenEncodedSecretKey will always produce the same key. (In other words, this is really a hash function and not a random key generator.)

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// Needs #include <CkCrypt2.h>

    CkString strOut;

    CkCrypt2 crypt;

    bool success;
    success = crypt.UnlockComponent("Anything for 30-day Trial");
    if (success != true) {
        strOut.append("Crypt component unlock failed\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    crypt.put_CryptAlgorithm("aes");
    crypt.put_KeyLength(128);

    //  Transform an arbitrary-length password to a secret key
    //  equal in bit-length to the KeyLength:
    const char * hexKey;
    hexKey = crypt.genEncodedSecretKey("my_password","hex");

    //  Set the secret key:
    crypt.SetEncodedKey(hexKey,"hex");

    //  The hexKey is 16 bytes in length:
    strOut.append(hexKey);
    strOut.append("\r\n");

    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());