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Study of analyzing information systems in order to discover their hidden aspects
Differential cryptanalysis Harvest now, decrypt later Impossible differential cryptanalysis Improbable differential cryptanalysis Integral cryptanalysis Linear
Cryptanalysis
General form of cryptanalysis applicable primarily to block ciphers
Differential cryptanalysis is a general form of cryptanalysis applicable primarily to block ciphers, but also to stream ciphers and cryptographic hash
Differential_cryptanalysis
Form of cryptanalysis
In cryptography, linear cryptanalysis is a general form of cryptanalysis based on finding affine approximations to the action of a cipher. Attacks have
Linear_cryptanalysis
Practice and study of secure communication techniques
letter, a syllable, or a pair of letters, etc.) to produce a cyphertext. Cryptanalysis is the term used for the study of methods for obtaining the meaning
Cryptography
Side-channel attack exploiting sound
cryptanalysis is a type of side-channel attack that exploits sounds emitted by computers or other devices. Most of the modern acoustic cryptanalysis focuses
Acoustic_cryptanalysis
Encryption techniques where an adversary cannot prove that the plaintext data exists
unconstitutional abridgement of the Fifth Amendment. In cryptography, rubber-hose cryptanalysis is a euphemism for the extraction of cryptographic secrets (e.g. the
Deniable_encryption
Early unclassified symmetric-key block cipher
less complexity than a brute-force search: differential cryptanalysis (DC), linear cryptanalysis (LC), and Davies' attack. However, the attacks are theoretical
Data_Encryption_Standard
In cryptanalysis, a kiss is a pair of identical messages sent using different ciphers, one of which has been broken. The term was used at Bletchley Park
Kiss_(cryptanalysis)
differential cryptanalysis. The term "rotational cryptanalysis" was coined by Dmitry Khovratovich and Ivica Nikolić in 2010 paper "Rotational Cryptanalysis of ARX"
Rotational_cryptanalysis
ISBN 0-89412-076-X Military Cryptanalysis, Part I, ISBN 0-89412-044-1 Military Cryptanalysis, Part II, ISBN 0-89412-064-6 Military Cryptanalysis, Part III, Simpler
Military_Cryptanalytics
Block cipher
2000[update], the best published cryptanalysis of the Twofish block cipher is a truncated differential cryptanalysis of the full 16-round version. The
Twofish
Block cipher
susceptible to various forms of cryptanalysis, and has acted as a catalyst in the discovery of differential and linear cryptanalysis. There have been several
FEAL
development of cryptography has been paralleled by the development of cryptanalysis — the "breaking" of codes and ciphers. The discovery and application
History_of_cryptography
Decryption of World War II cipher
Cryptanalysis of the Enigma ciphering system enabled the western Allies in World War II to read substantial amounts of Morse-coded radio communications
Cryptanalysis_of_the_Enigma
Intelligence-gathering by interception of signals
is usually encrypted, signals intelligence may necessarily involve cryptanalysis (to decipher the messages). Traffic analysis—the study of who is signaling
Signals_intelligence
Acquisition of cryptographic secrets via burglary, or other covert means
a black bag operation. As with rubber-hose cryptanalysis, this is technically not a form of cryptanalysis; the term is used sardonically. However, given
Black-bag_cryptanalysis
Exploitation of impossible differences in block ciphers
impossible differential cryptanalysis is a form of differential cryptanalysis for block ciphers. While ordinary differential cryptanalysis tracks differences
Impossible differential cryptanalysis
Impossible_differential_cryptanalysis
English computer scientist (1912–1954)
intelligence. He led Hut 8, the section responsible for German naval cryptanalysis. Turing devised techniques for speeding the breaking of German ciphers
Alan_Turing
Israeli cryptographer (born 1952)
differential cryptanalysis in the late 1980s, a general method for attacking block ciphers. It later emerged that differential cryptanalysis was already
Adi_Shamir
Military code use and breaking during the Second World War
the head of the department Arne Beurling Bletchley Park Cryptanalysis of the Enigma Cryptanalysis of the Lorenz cipher Far East Combined Bureau (FECB) Naval
World_War_II_cryptography
Type of cryptanalytic attack
NXT). Unlike differential cryptanalysis, which uses pairs of chosen plaintexts with a fixed XOR difference, integral cryptanalysis uses sets or even multisets
Integral_cryptanalysis
Standard for the encryption of electronic data
and Dmitry Khovratovich, Related-key Cryptanalysis of the Full AES-192 and AES-256, "Related-key Cryptanalysis of the Full AES-192 and AES-256". Table
Advanced_Encryption_Standard
Technique in cryptography
cryptanalysis is a form of cryptanalysis for block ciphers. Developed by Carlo Harpes in 1995, the attack is a generalization of linear cryptanalysis
Partitioning_cryptanalysis
Type of cipher
A linear cryptanalysis is a form of cryptanalysis based on finding affine approximations to the action of a cipher. Linear cryptanalysis is one of the
Block_cipher
Schemes to entice the Germans to include known plaintext during World War II
In cryptanalysis, gardening is the act of encouraging a target to use known plaintext in an encrypted message, typically by performing some action the
Gardening_(cryptanalysis)
Early block substitution cipher
United States Army. Another cryptanalysis of a Playfair cipher can be found in Chapter XXI of Helen Fouché Gaines' Cryptanalysis / a study of ciphers and
Playfair_cipher
Block cipher
than exhaustive search) within months using impossible differential cryptanalysis. A truncated differential attack was also published against 28 rounds
Skipjack_(cipher)
Form of cryptanalaysis
In cryptography, truncated differential cryptanalysis is a generalization of differential cryptanalysis, an attack against block ciphers. Lars Knudsen
Truncated differential cryptanalysis
Truncated_differential_cryptanalysis
Attack model for cryptanalysis with access to both plaintext and ciphertext
guessing if there are fewer than 26 distinct pairs. Cadix Cryptanalysis of the Enigma Kiss (cryptanalysis) PC Bruno Polish Cipher Bureau Ultra (cryptography)
Known-plaintext_attack
Aspect of WWII Allied intelligence gathering
Cryptanalysis of the Lorenz cipher was the process that enabled the British to read high-level German army messages during World War II. The British Government
Cryptanalysis of the Lorenz cipher
Cryptanalysis_of_the_Lorenz_cipher
Attack applicable to block and stream ciphers
cryptography, mod n cryptanalysis is an attack applicable to block and stream ciphers. It is a form of partitioning cryptanalysis that exploits unevenness
Mod_n_cryptanalysis
Concept in cryptanalysis
In cryptanalysis, contact analysis is the study of the frequency with which certain symbols precede or follow other symbols. The method is used as an
Contact_analysis
Encrypted information
thereby allowing only the receiver to correctly perform decryption. Cryptanalysis (also referred to as codebreaking or cracking the code) is the study
Ciphertext
Study of the frequency of letters or groups of letters in a ciphertext
In cryptanalysis, frequency analysis (also known as counting letters) is the study of the frequency of letters or groups of letters in a ciphertext. The
Frequency_analysis
Differential cryptanalysis Impossible differential cryptanalysis Integral cryptanalysis Linear cryptanalysis Meet-in-the-middle attack Mod-n cryptanalysis Related-key
Outline_of_cryptography
Global conflict (1939–1945)
German Enigma machine. Development of SIGINT (signals intelligence) and cryptanalysis enabled the countering process of decryption. Notable examples were
World_War_II
Topics referred to by the same term
modification of a computer game Absolute value, also called modulus Mod n cryptanalysis, a partitioning attack applicable to block and stream ciphers Modulo
Mod
Algorithm for encrypting and decrypting information
However, codes have a variety of drawbacks, including susceptibility to cryptanalysis and the difficulty of managing a cumbersome codebook. Because of this
Cipher
Form of cryptanalysis
the boomerang attack is a method for the cryptanalysis of block ciphers based on differential cryptanalysis. The attack was published in 1999 by David
Boomerang_attack
Encryption technique
book Advanced Military Cryptography (1931) and in the later Military Cryptanalysis and Military Cryptanalytics series. Friedman's co-author on Military
Two-square_cipher
Israeli cryptographer and cryptanalyst
and at the Weizmann Institute of Science. Among his contributions to cryptanalysis are: Dissection attack – joint work with Itai Dinur, Nathan Keller,
Orr_Dunkelman
Israeli cryptographer and cryptanalyst (born 1960)
(publicly) differential cryptanalysis, for which he received his Ph.D., while working under Adi Shamir. Differential cryptanalysis - publicly invented during
Eli_Biham
Block cipher
structure, known as Generalized Unbalanced Feistel Networks (GUFNs). The cryptanalysis proceeded very quickly, so quickly that the cipher was broken at the
MacGuffin_(cipher)
Cryptographic hash function
derivation function. In October 2010, an attack that combines rotational cryptanalysis with the rebound attack was published. The attack finds rotational collisions
Skein_(hash_function)
Arab cryptologist, linguist and poet
gained practical experience in cryptanalysis or the science of breaking encoded messages. He dedicated On Cryptanalysis, his only surviving work on the
Ibn_Adlan
Type of cryptanalytic attack
cryptanalysis is a generalization of differential cryptanalysis, an attack used against block ciphers. While in standard differential cryptanalysis the
Higher-order differential cryptanalysis
Higher-order_differential_cryptanalysis
Cryptanalysis of Italian naval codes during the Second World War was part of the Ultra code breaking project at Bletchley Park. Italian signals had been
Cryptanalysis of Italian naval codes
Cryptanalysis_of_Italian_naval_codes
Agency dealing with secret intelligence
overt and covert and may include espionage, communication interception, cryptanalysis, cooperation with other institutions, and evaluation of public sources
Intelligence_agency
Block cipher
Youngdai; Chang, Donghoon; Lee, Wonil; Lee, Sangjin (2004). "Differential Cryptanalysis of TEA and XTEA". In Lim, JI.; Lee, DH. (eds.). Information Security
XTEA
Basic component of symmetric key algorithms
perfect S-box. S-boxes can be analyzed using linear cryptanalysis and differential cryptanalysis in the form of a Linear approximation table (LAT) or
S-box
Encryption technique
Mauborgne recognized that if the key tape were totally random, then cryptanalysis would be impossible. To increase security, one-time pads were sometimes
One-time_pad
American computer scientist (born 1974)
State. 2001 Cryptanalysis of WEP, the security protocol used in 802.11 "WiFi" networks (with Nikita Borisov and Ian Goldberg). 2000 Cryptanalysis of the A5/1
David_A._Wagner
Attacks against common ciphers
Rechberger (2011-08-17). "Biclique Cryptanalysis of the Full AES". Cryptology ePrint Archive. Vincent Rijmen (1997). "Cryptanalysis and Design of Iterated Block
Cipher_security_summary
Block cipher
against ordinary differential cryptanalysis, KN-Cipher was later broken using higher order differential cryptanalysis. Presented as "a prototype...compatible
KN-Cipher
2015 password-based key derivation function
time memory required degree of parallelism While there is no public cryptanalysis applicable to Argon2d, there are two published attacks on the Argon2i
Argon2
Japanese diplomatic code named Purple by the US
advice of a mathematician, Teiji Takagi, who lacked a background in cryptanalysis. The Ministry of Foreign Affairs was supplied Red and Purple by the
Type_B_Cipher_Machine
Israeli computer scientist, cryptographer
LEX, as well as the cryptanalysis of numerous cryptographic primitives. In 1998, he developed impossible differential cryptanalysis together with Eli Biham
Alex_Biryukov
Cryptographic hash function
the original (PDF) on 2016-03-04. Mendel, Florian; Vincent, Rijmen. "Cryptanalysis of the Tiger Hash Function". ASIACRYPT 2007. Springer Berlin / Heidelberg
Tiger_(hash_function)
Stream ciphers
"most interesting Salsa20 cryptanalysis". This attack and all subsequent attacks are based on truncated differential cryptanalysis. In 2006, Fischer, Meier
Salsa20
Block cipher
rotated 56 bits for use in the next two rounds. Only a small amount of cryptanalysis has been published on NewDES. The designer showed that NewDES exhibits
NewDES
Block cipher
cipher cryptanalysis" (PDF). {{cite journal}}: Cite journal requires |journal= (help) Posteuca, R.; Negara, G. (2015). "Integral cryptanalysis of round-reduced
Prince_(cipher)
Cipher machines used by the German Army during World War II
Cryptographic protocol Authentication protocol Cryptographic primitive Cryptanalysis Cryptocurrency Cryptosystem Cryptographic nonce Cryptovirology Hash
Lorenz_cipher
Windows database that stores users' passwords
The Security Account Manager or System Account Manager (SAM) is a database file in Windows NT, Windows 2000, Windows XP, Windows Vista, Windows 7, 8.1
Security_Account_Manager
Simple encryption method
print(s.translate(table)) Dhnegm tylcu wbo irkg pjz cbefuebc svaxf?! Cryptanalysis Atbash This source code is a slight variation of an example in Zen of
ROT13
Japanese cryptographer (born 1961)
differential cryptanalysis, and discovered the technique of linear cryptanalysis, published in 1993. Differential and linear cryptanalysis are the two
Mitsuru_Matsui
Cryptographic algorithm
appendix of Cryptonomicon, just about everyone with an interest in cryptanalysis will now know about this algorithm, so carrying a deck of cards may
Solitaire_(cipher)
Digital copy protection
feature like Intel Management Engine disabled, HDCP will not work. Cryptanalysis researchers demonstrated flaws in HDCP as early as 2001. In September
High-bandwidth Digital Content Protection
High-bandwidth_Digital_Content_Protection
Block cipher
Blowfish provides a good encryption rate in software, and no effective cryptanalysis of it has been found to date for smaller files. It is recommended Blowfish
Blowfish_(cipher)
Unsolved encrypted message associated with unsolved homicide
handed over to the FBI for further investigation. Attempts by the FBI's Cryptanalysis and Racketeering Records Unit (CRRU) and the American Cryptogram Association
Ricky McCormick's encrypted notes
Ricky_McCormick's_encrypted_notes
Form of cryptanalysis
the differential-linear attack is a mix of both linear cryptanalysis and differential cryptanalysis. The attack utilises a differential characteristic over
Differential-linear_attack
Block cipher
chosen-plaintext attack requiring 259 queries and negligible work. See cryptanalysis below. The cipher's designers were Roger Needham and David Wheeler of
XXTEA
Rotor cipher machine
to a number of advanced features, making it much more resistant to cryptanalysis than the Enigma or other contemporary Hagelin machines. While the Enigma
Schlüsselgerät_41
Cryptographic hash function
1991: 194–203 Hans Dobbertin: Cryptanalysis of MD4. Fast Software Encryption 1996: 53–69 Hans Dobbertin, 1998. Cryptanalysis of MD4. J. Cryptology 11(4):
MD4
German signals intelligence organization from 1941–1945
cryptanalysis of Soviet ciphers, although low and medium grade Soviet ciphers were read. The ratio of general evaluation against pure cryptanalysis was
Signal Intelligence Regiment (KONA)
Signal_Intelligence_Regiment_(KONA)
Concept in cryptography
1995. G. Becker. "Merkle Signature Schemes, Merkle Trees and Their Cryptanalysis", seminar 'Post Quantum Cryptology' at the Ruhr-University Bochum, Germany
Hash-based_cryptography
Surveillance strategy
one day be decrypted, given sufficient advances in computing power or cryptanalysis. The abbreviation HNDL is sometimes used in technical and policy documents
Harvest_now,_decrypt_later
Security of a cryptosystem which derives purely from information theory
time. In contrast, a system which depends on the computational cost of cryptanalysis to be secure (and thus can be broken by an attack with unlimited computation)
Information-theoretic security
Information-theoretic_security
Simple type of polyalphabetic encryption system
lengths; a key of length one is just a simple Caesar cipher, and its cryptanalysis is much easier.) Since key lengths 2 and 1 are unrealistically short
Vigenère_cipher
Block cipher
string of bytes. In October 2010, an attack that combines rotational cryptanalysis with the rebound attack was published. The attack mounts a known-key
Threefish
Block cipher
also increases the strength of DES against differential cryptanalysis and linear cryptanalysis, although the improvement is much smaller than in the case
DES-X
Block cipher designed in 2000 by Chang-Hyi Lee
SHARK. Zodiac is theoretically vulnerable to impossible differential cryptanalysis, which can recover a 128-bit key in 2119 encryptions. Zodiac Technical
Zodiac_(cipher)
Field of asymmetric cryptographic primitives
Cryptanalysis of HFE, Multi-HFE and Variants for Odd and Even Characteristic. DCC'13 [FJ03] Jean-Charles Faugère and A. Joux, Algebraic Cryptanalysis
Multivariate_cryptography
Any attack based on information gained from the implementation of a computer system
cryptographic protocols or algorithms (notwithstanding the fact that cryptanalysis may identify vulnerabilities relevant to both types of attacks). Some
Side-channel_attack
Method of encryption
immediately with cryptanalysis techniques. Transposition ciphers have several vulnerabilities (see the section on "Detection and cryptanalysis" below), and
Transposition_cipher
Classic polyalphabet encryption system
both the plaintext and the keyword: meetatthefountain KILT The ease of cryptanalysis is caused by the feedback from the relationship between plaintext and
Autokey_cipher
Algorithm in mathematics
deciphering hidden or noisy information and consequently is often used in cryptanalysis. In data security an observer would like to extract information from
Baum–Welch_algorithm
Random data used as an additional input to a hash function
Cryptographic protocol Authentication protocol Cryptographic primitive Cryptanalysis Cryptocurrency Cryptosystem Cryptographic nonce Cryptovirology Hash
Salt_(cryptography)
19-20th century cipher used by the US
Cryptographic protocol Authentication protocol Cryptographic primitive Cryptanalysis Cryptocurrency Cryptosystem Cryptographic nonce Cryptovirology Hash
Wadsworth's_cipher
Signals agency of the German Foreign Office
S/Chi was the symbol and the code name of the Chiffrierdienst, i.e. the Cryptanalysis Department of Pers Z S. Although little is known about the organization
Pers_Z_S
Allied cryptanalysis project during World War II
Magic was an Allied cryptanalysis project during World War II. It involved the United States Army's Signals Intelligence Service (SIS) and the United
Magic_(cryptography)
Method of designing block ciphers
block ciphers to be provably secure against differential cryptanalysis, linear cryptanalysis, and even undiscovered cryptanalytic attacks meeting certain
Decorrelation_theory
Process of converting plaintext to ciphertext
2478/popets-2019-0056. S2CID 47011059. Fouché Gaines, Helen (1939), Cryptanalysis: A Study of Ciphers and Their Solution, New York: Dover Publications
Encryption
Cryptographic hash function
carry them out. The authors named this significant breakthrough in the cryptanalysis of SHA-1 The SHAppening. The method was based on their earlier work
SHA-1
Cryptographic hash function
Eli Biham and Adi Shamir (1991) applied the technique of differential cryptanalysis to N-hash, and showed that collisions could be generated faster than
N-hash
Volume 4, Number 2 "Ciphertext-Only Cryptanalysis of Enigma", October 1995, Cryptologia, Volume 19, Number 4 Cryptanalysis of the Enigma Pool, Bob (5 November
James_Gillogly
1998 esoteric programming language
Andrew Cooke and implemented in Lisp. Later, Lou Scheffer posted a cryptanalysis of Malbolge and provided a program to copy its input to its output.
Malbolge
Family of block ciphers
this was included to block slide and rotational cryptanalysis attacks. Still, rotational-XOR cryptanalysis has been used to find distinguishers against reduced-round
Speck_(cipher)
Principle used in linear cryptanalysis
In cryptanalysis, the piling-up lemma is a principle used in linear cryptanalysis to construct linear approximations to the action of block ciphers. It
Piling-up_lemma
Cryptographic algorithm for random number generation
in Win32 environments, its security is critical for Windows users. A cryptanalysis of CryptGenRandom, published in November 2007 by Leo Dorrendorf and
CryptGenRandom
American naval officer and cryptanalyst (1900–1976)
the advanced card game auction bridge and recommended him for a Navy cryptanalysis class in Washington, D.C. Until 1941, Rochefort split his time between
Joseph_Rochefort
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