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Group 5-2 - Christopher Breen Matt Edelman AlanNess Richard...

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Christopher Breen Matt Edelman AlanNess Richard Lai
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DES This is the 'Data Encryption Standard'. This is a cipher that operates on 64-bit blocks of data, using a 56-bit key. It is a 'private key' system. RSA RSA is a public-key system designed by Rivest, Shamir, and Adleman. HASH A 'hash algorithm' is used for computing a condensed representation of a fixed length message/file. This is sometimes known as a 'message digest', or a 'fingerprint'. MD5 MD5 is a 128 bit message digest function. It was developed by Ron Rivest. AES This is the Advanced Encryption Standard (using the Rijndael block cipher) approved by NIST. SHA-1 SHA-1 is a hashing algorithm similar in structure to MD5, but producing a digest of 160 bits (20 bytes). Because of the large digest size, it is less likely that two different messages will have the same SHA-1 message digest. For this reason SHA-1 is recommended in preference to MD5. HMAC HMAC is a hashing method that uses a key in conjunction with an algorithm such as MD5 or SHA-1. Thus one can refer to HMAC-MD5 and HMAC-SHA1.
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