Hash-based message authentication code (HMAC) is a message encryption method that uses a cryptographic key with a hash function. It gives the server and the client each a private key known only to ...

Mahathi Kari's research contributes to this conversation by examining one of the foundational building blocks of secure ...

Many organizations have been replacing the MD5 hash algorithm with the SHA-1 hash function, but can the MD5 hash algorithm still be used securely? MD5 (Message-Digest algorithm 5) is a cryptographic ...

IPsec incorporates several cryptographic operations to ensure message authenticity, data integrity, and sender nonrepudiation. In this section we will describe the mechanics of these cryptographic ...

Members can download this article in PDF format. The security of cryptographic applications critically relies on symmetric keys and private keys that are continually kept secret. The method used to ...

The National Institute of Standards and Technology (NIST) this week opened a competition to develop a new cryptographic hash algorithm, a tool that converts a file, message or block of data to a short ...

Download this article in PDF format. On the surface, this sounds ridiculous: A lobby fish tank gets attacked by hackers. Why would anyone want to break into a fish tank (Fig. 1)? But in this case, the ...