Posted by: HighLander
Application Level Cryptography - 08/14/05 10:48 AM
Application Level Cryptography
A cryptographic algorithm, also called a cipher, is the mathematical function used for encryption and decryption. If the security of an algorithm is based on keeping the way that algorithm works a secret, it is a restricted algorithm. Restricted algorithms are woefully inadequate by today’s standards. A large or changing group of users cannot use them, because every time a user leaves the group, everyone else must switch to a different algorithm. If someone accidentally reveals the secret, everyone must change their algorithm.