This function completes HMAC-SHA1 digest computation and retrieves the digest value into\r
the specified memory. After this function has been called, the HMAC-SHA1 context cannot\r
be used again.\r
This function completes HMAC-SHA1 digest computation and retrieves the digest value into\r
the specified memory. After this function has been called, the HMAC-SHA1 context cannot\r
be used again.\r