ام‌دی۵

Also known as MD5 Message-Digest Algorithm, Message Digest Algorithm 5

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, and was specified in 1992 as RFC 1321.

Key facts

Cryptographic hash function.rounds: 4
Cryptographic hash function.name: MD5
Cryptographic hash function.caption: 848ca0f914b8836f4e4aa8c9da171609
Cryptographic hash function.block size: 512 bit
Cryptographic hash function.designers: Ronald Rivest
Cryptographic hash function.publish date: April 1992
Cryptographic hash function.series: MD2, MD4, MD5, MD6
Cryptographic hash function.digest size: 128 bit
Cryptographic hash function.structure: Merkle–Damgård construction
Cryptographic hash function.cryptanalysis: A 2013 attack by Xie Tao, Fanbao Liu, and Dengguo Feng breaks MD5 collision resistance in 218 time. This attack runs in less than a second on a regular computer. MD5 is prone to length extension attacks.