Other authentication mechanisms, such as the hash function message authentication code (HMAC) and digital signatures, have long been available.

The HMAC is a specific, albeit special type of message authentication code that couples a cryptographic mathematical hashing function along with pre-shared secret cryptographic keys.

Other authentication mechanisms, such as the hash function message authentication code (HMAC) and digital signatures, have long been available.

Oath announced its initial effort, a hashed message authentication code (HMAC) one-time password (OTP) algorithm, in October at the Digital ID World show in Denver.

This information is converted into a code, a Hash Message Authentication Code (HMAC), of the image where distinct pixel values are selected for embedding watermark bits and the preferred pixel ...