Generating One-Time Passwords with SHA-256, SHA-384, and SHA-512

Generating One-Time Passwords with SHA-256, SHA-384, and SHA-512 This document describes the use of the new AES hash alogrithms, SHA256, SHA384 and SHA512, for use with the One Time Password (OTP) system, as defined by RFC 2289. RFC 2289 has definitions for the MD4, MD5 and SHA1 hashes, while this document defines techniques for using the AES hashes.