CCHmac.h

/*!
    @function   CCHmac
    @abstract   Create the Message Authentication Code.
    
    @param      algorithm   HMAC algorithm to perform.
    @param      key         Raw key bytes.
    @param      keyLength   Count of raw key bytes. It can also be zero.
    @param      data        Raw data bytes.
    @param      dataLength  Count of data bytes.
    @param      macOut      Output buffer allocated by caller. 
 */
void CCHmac(CCHmacAlgorithm algorithm, const void *key, size_t keyLength, const void *data, size_t dataLength, void *macOut);