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HAVAL is a cryptographic hash function. Unlike MD5, but like most modern cryptographic hash functions, HAVAL can produce hashes of different lengths – 128 bits, 160 bits, 192 bits, 224 bits, and 256 bits. HAVAL also allows users to specify the number of rounds (3, 4, or 5) to be used to generate the hash. HAVAL was broken in 2004. [1]
In 2009, MD2 was shown to be vulnerable to a collision attack with time complexity of 2 63.3 compression function evaluations and memory requirements of 2 52 hash values. This is slightly better than the birthday attack which is expected to take 2 65.5 compression function evaluations.
The "response" value is calculated in three steps, as follows. Where values are combined, they are delimited by colons. The MD5 hash of the combined username, authentication realm and password is calculated. The result is referred to as HA1. The MD5 hash of the combined method and digest URI is calculated, e.g. of "GET" and "/dir/index.html ...
It is common for a web application to store in a database the hash value of a user's password. Without a salt, a successful SQL injection attack may yield easily crackable passwords. Because many users re-use passwords for multiple sites, the use of a salt is an important component of overall web application security . [ 14 ]
hash HAS-160: 160 bits hash HAVAL: 128 to 256 bits hash JH: 224 to 512 bits hash LSH [19] 256 to 512 bits wide-pipe Merkle–Damgård construction: MD2: 128 bits hash MD4: 128 bits hash MD5: 128 bits Merkle–Damgård construction: MD6: up to 512 bits Merkle tree NLFSR (it is also a keyed hash function) RadioGatún: arbitrary ideal mangling ...
The first chain assumes the hash value is in the last hash position and just applies R k; the next chain assumes the hash value is in the second-to-last hash position and applies R k−1, then H, then R k; and so on until the last chain, which applies all the reduction functions, alternating with H. This creates a new way of producing a false ...
The MD6 Message-Digest Algorithm is a cryptographic hash function. It uses a Merkle tree-like structure to allow for immense parallel computation of hashes for very long inputs. Authors claim a performance of 28 cycles per byte for MD6-256 on an Intel Core 2 Duo and provable resistance against differential cryptanalysis. [3]
The MD5 message-digest algorithm is a widely used hash function producing a 128-bit hash value. MD5 was designed by Ronald Rivest in 1991 to replace an earlier hash function MD4, [3] and was specified in 1992 as RFC 1321. MD5 can be used as a checksum to verify data integrity against unintentional corruption.