An encryption key that is kept concealed because its discovery voids the security of the encryption session. A secret key generally refers to the secret key cryptography system, in which both sides ...

The arena of creating secure environments in the hardware and software industries is somewhat shrouded in mystery and misunderstanding. Certainly, some types of ciphers are relatively straightforward ...

The Diffie-Hellman algorithm was a stunning breakthrough in cryptography that showed cryptographic keys could be securely exchanged in plain sight. Here’s how it works. Whitfield Diffie and Martin ...

D.B. Cooper 'secret ciphers' released, point to key suspect; cryptology experts say, Not so fast If you purchase a product or register for an account through a link on our site, we may receive ...

This was one of the most secure hand ciphers used in the Second World War. It was used by both the Allies and the Axis, and served both well. Its main weakness was that if the attacker intercepted two ...

You could do worse than to confuse the meanings of "code" and "cipher"—even cryptographers sometime use the terms as though they had the same meaning. There is, however, a definite distinction between ...

Readers of a certain age will remember those 'invisible ink' spy toys that let you write a 'secret' message which would only appear after rubbing the page with half of a lemon. Yeah, this is not that.

An encryption method that uses the same secret key to encrypt and decrypt messages. Contrast with "public key cryptography," which uses a two-part key; one public and one private. THIS DEFINITION IS ...