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MD4: Security, MD4 hashes & Overview

The MD4 Message-Digest Algorithm is a cryptographic hash function developed by Ronald Rivest in 1990. The digest length is 128 bits. The algorithm has influenced later designs, such as the MD5, SHA-1 and RIPEMD algorithms. The initialism "MD" stands for "Message Digest".

Language: English [EN]
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MD4 topic overview

The analysis highlights Security, MD4 hashes and Overview as prominent areas in the source structure around MD4.

Related topics
14
Source areas
3
Connected nodes
17
Extracted relationships
66
Concept neighborhoods
13
Bridge connections
17

What this topic covers Research coverage

Source areas are shown by the number of related topics found in each part of the analysis. Use smaller areas too: they can reveal specialized angles and content gaps.

Overview · 9 topics
Security · 3 topics
MD4 hashes · 2 topics

Smaller areas are not necessarily less important. They contain fewer connections in this analysis and can be useful for finding specialized angles or coverage gaps.

Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

Block sizes
512 bits
Designers
Ronald Rivest
Digest sizes
128 bits
First published
October 1990
Rounds
3
Series
MD2, MD4, MD5, MD6

Explore all related topics Closing gaps

Browse the complete topic structure, not only the most central items. Less prominent entities and concepts can reveal missing angles, specialized context and useful research gaps. Each item opens a new analysis centered on that subject.

Overview

Security

MD4 hashes

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

How MD4 connects Entity context

The extracted context around MD4 shows recurring relationship patterns in the source. For example, MD4 → An Attack, Antoon Bosselaers, Bert, Boer, Cryptanalysis, Crypto, Cryptology, Dengguo Feng, Dobbertin, Eurocrypt, Fast Software Encryption, Hash Functions MD4, Hui Chen, Kazuo Ohta, Last Two Rounds, Lei Wang, New Message Difference, Noboru Kunihiro, RIPEMD, Sasaki Another extracted example is MD4 → Advances, Algorithm, Computer Science, Cryptology-CRYPT0, Description, Heidelberg, Historic StatusRivest, ISBN, Lecture Notes, RFC, Ron RivestRFC, Ronald, Springer Berlin, The MD4 Message Digest, Vol. Use these groups to spot repeated connection types before inspecting the individual relationships.

MD4

Top relations

related to References · 23
MD4 → An Attack, Antoon Bosselaers, Bert, Boer, Cryptanalysis, Crypto, Cryptology, Dengguo Feng, Dobbertin, Eurocrypt, Fast Software Encryption, Hash Functions MD4, Hui Chen, Kazuo Ohta, Last Two Rounds, Lei Wang, New Message Difference, Noboru Kunihiro, RIPEMD, Sasaki
related to External links · 15
MD4 → Advances, Algorithm, Computer Science, Cryptology-CRYPT0, Description, Heidelberg, Historic StatusRivest, ISBN, Lecture Notes, RFC, Ron RivestRFC, Ronald, Springer Berlin, The MD4 Message Digest, Vol
related to Security · 13
MD4 → Bosselaers, Den Boer, Gaëtan Leurent, Guo, Hans Dobbertin, In, In August, MD4/MD5/SHA-1/RIPEMD, Sasaki, The, This, Wang, Weaknesses
related to Collision attacks · 3
MD4 → An Attack, Last Two Rounds, MD4Improved Collision Attack
related to MD4 hashes · 3
MD4 → ASCII, Even, The
related to MD4 test vectors · 3
MD4 → RFC, The, The MD4 Message-Digest Algorithm
Block sizes · 1
MD4 → 512 bits
Designers · 1
MD4 → Ronald Rivest
Digest sizes · 1
MD4 → 128 bits
First published · 1
MD4 → October 1990

Important terminology

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

attack hash collision also md5 two digest message algorithm used published security attacks ronald rivest first 2007 ripemd function later

MD4 relationships Subject–Predicate–Object triples

TTTA extracted 66 structured relationships around MD4. Examples in this analysis include MD4 → Block sizes → 512 bits and MD4 → Designers → Ronald Rivest. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
MD4Block sizes512 bits1.00infobox
MD4DesignersRonald Rivest1.00infobox
MD4Digest sizes128 bits1.00infobox
MD4First publishedOctober 19901.00infobox
MD4Rounds31.00infobox
MD4SeriesMD2, MD4, MD5, MD61.00infobox
MD4related to Collision attacksAn Attack0.60section
MD4related to Collision attacksLast Two Rounds0.60section
MD4related to Collision attacksMD4Improved Collision Attack0.60section
MD4related to External linksRFC0.60section
MD4related to External linksDescription0.60section
MD4related to External linksRon RivestRFC0.60section

Related concept clusters Concept neighborhoods

The concept neighborhoods around MD4 bring nearby vocabulary together. In this analysis, examples include Attack, Two and Collision. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • MD4
    • Attack
    • Two
    • Collision
    • Also
    • Message
    • Attacks
    • First
    • Rfc
    • Rivest
    • Ronald
    • Rounds
    • Security
  • md4
    • Attack
    • Two
    • Collision
    • Also
    • Message
    • Attacks
    • First
    • Rfc
    • Rivest
    • Ronald
    • Rounds
    • Security
  • cryptographic hash function
    • Two
    • Function
    • Hash
    • Md5
    • Md4
    • Attack
    • Collisions
    • Less
    • Md2
    • Md6
    • Operations
    • Attacks
  • collision attack
    • Attacks
    • First
    • Attack
    • Collision
    • Two
    • Full
    • Md4
    • Hash
    • Rounds
    • Al
    • Et
    • Later
  • preimage attack
    • Collision
    • Two
    • Md4
    • Hash
    • Attacks
    • First
    • Rounds
    • Md5
    • Published
    • Also
    • Collisions
    • Full
  • md4 hashes
    • Attack
    • Two
    • Collision
    • Also
    • Message
    • Attacks
    • First
    • Rfc
    • Rivest
    • Ronald
    • Rounds
    • Security
  • md5
    • Md2
    • Md6
    • Sha-1
    • Attacks
    • Ripemd
    • Rounds
    • Security
    • Two
    • Attack
    • Collision
    • Collisions
    • Full
  • ronald rivest
    • Ronald
    • Digest
    • Bits
    • Collisions
    • Full
    • Less
    • Md2
    • Md6
    • Operations
    • Attacks
    • First
    • Rfc

Connections between topic areas Semantic bridges

For MD4, one of the stronger structural bridges in this analysis connects MD4 with Overview. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.

Min side: 3
MD4 — Overview · splits 8 ⟂ 10
MD4 — Security · splits 14 ⟂ 4
MD4 — MD4 hashes · splits 15 ⟂ 3

Map overview Semantic statistics

MD4

Nodes18
Edges17
Triples66
Avg. degree1.89
Density0.111111
Components1

Source & methodology

TTTA analyzes the structure around MD4 to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as Security, MD4 hashes & Overview, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — MD4 · EN edition · Analysis: TopicsToTalkAbout

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