What is Message Authentication Codes?

What is Message Authentication Codes? – A message authentication code, or MAC, is a construction that detects tampering with messages. Encryption prevents Eve from reading the messages but does not prevent her from manipulating the messages. This is where the MAC comes in. Like encryption, MACs use a secret key, K, known to both Alice and Bob but not to Eve. Alice sends not just the message m, but also a MAC value computed by a MAC function. Bob checks that the MAC value of the message received equals the…

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What Is Encryption?

Encryption is the process of converting readable plain text into an unreadable cipher text by applying a set of complex algorithms that transform that the data into blocks or streams of random alphanumeric characters. This section deals with ciphers and various encryption algorithms such DES, AES, RC4, RC5, RC6, DSA, RSA, MD5, and SHA. Type of Encryption Cipher In cryptography, a cipher is an algorithm for performing encyption and decryption. Encipherment is the process of converting plain text into a cipher or code; the reverse process is call decipherment. A…

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