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MD4
MD4

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!!! Overview
The MD4 [Message Digest|Message-Digest] Algorithm is a [cryptographic] [Hash Function] developed by Ronald Rivest in 1990.[1]
[{$pagename}] digest length is 128 bits.
[{$pagename}] has influenced later designs, such as the [MD5], [SHA-1] and [RIPEMD] algorithms.
One [MD4] operation :
* [{$pagename}] consists of 48 of these operations
* grouped in three rounds of 16 operations.
* F is a nonlinear function;
* one function is used in each round.
* Mi denotes a 32-bit block of the message input
* Ki denotes a 32-bit constant
* different for each operation.
The security of [{$pagename}] has been __severely__ compromised and is considered [Cryptographically Weak] and lacks [Collision Resistance].
The first full [collision attack|Vulnerability] against [{$pagename}] was published in 1995 and several newer attacks have been published since then.
As of 2007, an attack can generate collisions in less than 2 MD4 hash operations. A theoretical preimage attack also exists.
A variant of [{$pagename}] is used in the ed2k URI scheme to provide a unique identifier for a file in the popular eDonkey2000 / eMule P2P networks.
[{$pagename}] was also used by the rsync protocol (prior to version 3.0.0.)
[{$pagename}] is used to compute [NTLM] password-derived key digests on Microsoft Windows NT, XP, Vista, 7, 8, and 10.[4]
!! More Information
There might be more information for this subject on one of the following:
[{ReferringPagesPlugin before='*' after='\n' }]
This page (revision-1) was last changed on 29-Nov-2024 16:16 by UnknownAuthorTop