Block cipher

Use the mouse wheel or two fingers (on touchscreens) to zoom in and out of the map.

Export map as:

Research this topic

Explore the main themes, entities and connections around Block cipher. Start with the topic map, then use the sections below for research and deeper semantic analysis.

Explore this topic

Start with a few of the strongest sections from the source topic. These are research directions, not a list of keywords you must use.

History

Product cipher Communication Theory of Secrecy Systems Claude Shannon Substitutions Permutations

27 related topics

Notable block ciphers

Lucifer IBM Federal Information Processing Standard NSA Eli Biham

40 related topics

Relation to other cryptographic primitives

Cryptographic hash functions One-way compression function Cryptographically secure pseudorandom number generators Pseudorandom permutations Format-Preserving Encryption

19 related topics

Cryptanalysis

Attack models Ciphertext-only Codetexts Known-plaintext Chosen-ciphertext

18 related topics

Topics to explore

Browse the full topic structure. Each item opens a new analysis centered on that subject.

Overview

Cryptography
Deterministic algorithm
Bits Bit
Building blocks Cryptographic primitive
Cryptographic protocols Cryptographic protocol
Encryption
Modes of operation Block cipher modes of operation
Authenticity Authentication
Universal hash functions Universal hash function
Pseudorandom number generators Pseudorandom number generator
Rotation Circular shift
XOR Exclusive or
ChaCha20
Speck Speck (cipher)
XXTEA
BLAKE BLAKE (hash function)
Data flow diagram
Timing attacks Timing attack
Rotational cryptanalysis
RC5
RC6
Substitution box
Lookup table
Data Encryption Standard
Advanced Encryption Standard
Permutation box
IDEA IDEA (cipher)

Definition

Provable security

Mode of operation Block cipher mode of operation
Adversary Adversary (cryptography)
Oracle Oracle machine
Reduction argument Reduction (complexity)

Practical evaluation

Hardware Electronic hardware
Software
Gate count
Throughput
Memory Computer memory
Intellectual property rights Intellectual property right

Notable block ciphers

Lucifer Lucifer (cipher)
IBM
Federal Information Processing Standard
NSA
Eli Biham
Adi Shamir
Key size
Special-purpose machine designed to break DES EFF DES cracker
Electronic Frontier Foundation
Triple DES
International Data Encryption Algorithm
James Massey
ETH Zurich
Xuejia Lai
Blocks Block size (cryptography)
Groups Group (mathematics)
Modular Modular arithmetic
Ronald Rivest Ron Rivest
One-way function
Golden ratio
Nothing up my sleeve numbers Nothing up my sleeve number
Joan Daemen
Vincent Rijmen
5-year public competition Advanced Encryption Standard process
Column-major order
Blowfish Blowfish (cipher)
Bruce Schneier
Key length
S-boxes S-box
Key schedule

Generalizations

Disk encryption theory
Alphabet Alphabet (computer science)
Language Formal language

Relation to other cryptographic primitives

Cryptographic hash functions Cryptographic hash function
One-way compression function
Cryptographically secure pseudorandom number generators Cryptographically secure pseudorandom number generator
Pseudorandom permutations Pseudorandom permutation
Format-Preserving Encryption
Unpredictable permutation
Even–Mansour cipher
Message authentication codes Message authentication code
CBC-MAC
OMAC One-key MAC
PMAC PMAC (cryptography)
Authenticated encryption
Confidentiality
CCM CCM mode
EAX EAX mode
GCM Galois/Counter Mode
OCB OCB mode
SHACAL
BEAR and LION BEAR and LION ciphers

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.

Map overview Semantic statistics

Nodes191

Edges190

Triples209

Avg. degree1.99

Density0.010471

Components1

How this topic connects Entity context

See the strongest relationship patterns around the current topic before diving into the raw triples.

Block cipher

Top relations

related to history · 31

Block cipher → AES, AKB, American National Standards Institute, ANSI, Atalla, Atalla Box, Atalla Corporation, Atalla Key Block, ATM, Claude Shannon, Communication Theory, DES, Feistel, Horst Feistel, HSM, In, It, Iterated, Many, Mohamed

related to Relation to other cryptographic primitives · 27

Block cipher → Authenticated, Block, CBC-MAC, CCM, Cryptographic, Cryptographically, CSPRNGs, CTR, EAX, Even, For, Format-Preserving Encryption, GCM, It, MAC, MACs, Mansour, Message, OCB, OFB

related to Lucifer / DES · 16

Block cipher → Adi Shamir, Data Encryption Standard, DES, Eli Biham, Federal Information Processing Standard, FIPS PUB, Horst Feistel, IBM, It, Lucifer, Mitsuru Matsui, National Bureau, NBS, NSA, Standards, The

related to Additional National Block Ciphers · 13

Block cipher → ARIA, ChinaKuznyechik, GOST, Japan, Kalyna, Russia, RussiaGOST, Several, SM4, South KoreaCamellia, South KoreaSEED, Soviet Union, Ukraine

related to Modes of operation · 13

Block cipher → BSI TR-02102, CBC, CFB, CTR, ECB, For, However, In, ISO/IEC, NIST, OFB, The, To

related to Blowfish · 11

Block cipher → At, Blowfish, Bruce Schneier, DES, Feistel, It, Notable, S-boxes, Schneier, The, Twofish

related to IDEA · 9

Block cipher → Algorithm, DES, ETH Zurich, IDEA, James Massey, The, The International Data Encryption, XOR, Xuejia Lai

related to Definition · 8

Block cipher → Both, EK, For, More, Nimbus Roman No9, The, Times, Times New Roman

related to Further reading · 7

Block cipher → ISBN, Knudsen, Lars, Matthew, Robshaw, Springer, The Block Cipher Companion

related to Provable security · 7

Block cipher → CBC, Each, ECB, Note, On, This, When

Important terminology Word statistics

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

Important terminology

block cipher key ciphers encryption secure plaintext permutation blocks ciphertext function des bits security cryptanalysis one algorithm round using used

Entity relationships Subject–Predicate–Object triples

Subject	Predicate	Object	Confidence	Src
Block cipher	is a	deterministic algorithm that operates on fixed-length groups of bits	0.90	text
substitutions	instance of	Claude Shannon analyzed product ciphers and suggested them as a means of effectively improving security by combining simple operations	0.80	text
permutations	instance of	Claude Shannon analyzed product ciphers and suggested them as a means of effectively improving security by combining simple operations	0.80	text
ISO/IEC 10116	instance of	several so-called block cipher modes of operation have been designed and specified in national recommendations such as NIST 800-38A and BSI TR-02102 and international standards	0.80	text
the CBC mode only operate on complete plaintext blocks	instance of	PaddingSome modes	0.80	text
the DES have typically selected a 64-bit block size	instance of	Earlier block ciphers	0.80	text
while newer designs such as the AES support block sizes of 128 bits or more	instance of	Earlier block ciphers	0.80	text
with some ciphers supporting a range of different block sizes.Differential cryptanalysisLinear cryptanalysisA linear cryptanalysis is a form of cryptanalysis based on finding affine approximations to the action of a cipher	instance of	Earlier block ciphers	0.80	text
with some ciphers supporting a range of different block sizes	instance of	Earlier block ciphers	0.80	text
the single-key Even	instance of	see Format-Preserving Encryption.A publicly known unpredictable permutation combined with key whitening is enough to construct a block cipher --	0.80	text
Block cipher	related to Additional National Block Ciphers	Several	0.60	section
Block cipher	related to Additional National Block Ciphers	SM4	0.60	section

Related concept clusters Concept neighborhoods

These clusters group vocabulary that occurs around closely connected concepts in the source material.

Connections between topic areas Semantic bridges

Bridges can reveal useful research angles that are easy to miss in a flat list of related terms.

Min side: 3

Research this topic

Explore this topic

History

Notable block ciphers

Relation to other cryptographic primitives

Cryptanalysis

Key facts & relationships

Topics to explore

Overview

Definition

History

Design

Modes of operation

Padding

Cryptanalysis

Provable security

Practical evaluation

Notable block ciphers

Generalizations

Relation to other cryptographic primitives

Advanced semantic analysis

Map overview Semantic statistics

Block cipher

How this topic connects Entity context

Block cipher

Top relations

Important terminology Word statistics

Important terminology

Entity relationships Subject–Predicate–Object triples

Related concept clusters Concept neighborhoods

Connections between topic areas Semantic bridges