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MD5

Index MD5

The MD5 algorithm is a widely used hash function producing a 128-bit hash value. [1]

81 relations: Alexander Sotirov, Arjen Lenstra, ASCII, Avalanche effect, École Polytechnique Fédérale de Lausanne, Bates numbering, Birthday attack, Bit, Byte, Certificate authority, Chaos Communication Congress, Checksum, CNET, Collision (computer science), Collision attack, Collision resistance, Comparison of cryptographic hash functions, Cryptographic hash function, Data integrity, Digital signature, Distributed computing, Electronic discovery, Endianness, Eurocrypt, Exclusive or, Flame (malware), Graphics processing unit, Hans Dobbertin, Hash function, Hash function security summary, HashClash, Hexadecimal, IBM System p, Initialization vector, Institute of Electrical and Electronics Engineers, Jacob Appelbaum, Key stretching, Lausanne, Length extension attack, Logical conjunction, Logical disjunction, Marc Stevens (cryptology), Massachusetts Institute of Technology, MD2 (cryptography), MD4, MD5CRK, Md5deep, Md5sum, MD6, Merkle–Damgård construction, ..., Message Passing Interface, Microsoft, Negation, Nibble, Octet (computing), One-way compression function, Padding (cryptography), PlayStation 3, PostScript, PowerShell, Preimage attack, Public key certificate, RIPEMD, Ron Rivest, RSA Security, SHA-1, SHA-2, Software, Software Engineering Institute, Sony, Springer Science+Business Media, Stefan Lucks, The quick brown fox jumps over the lazy dog, Transport Layer Security, United States Cyber Command, Verisign, Vlastimil Klíma, Wired (magazine), X.509, Xiaoyun Wang, Xuejia Lai. Expand index (31 more) »

Alexander Sotirov

Alexander Sotirov is a computer security researcher.

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Arjen Lenstra

Arjen Klaas Lenstra (born 2 March 1956, Groningen) is a Dutch mathematician.

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ASCII

ASCII, abbreviated from American Standard Code for Information Interchange, is a character encoding standard for electronic communication.

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Avalanche effect

In cryptography, the avalanche effect is the desirable property of cryptographic algorithms, typically block ciphers and cryptographic hash functions, wherein if an input is changed slightly (for example, flipping a single bit), the output changes significantly (e.g., half the output bits flip).

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École Polytechnique Fédérale de Lausanne

The École polytechnique fédérale de Lausanne (EPFL) is a research institute and university in Lausanne, Switzerland, that specializes in natural sciences and engineering.

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Bates numbering

Bates numbering (also known as Bates stamping, Bates branding, Bates coding or Bates labeling) is used in the legal, medical, and business fields to place identifying numbers and/or date/time-marks on images and documents as they are scanned or processed, for example, during the discovery stage of preparations for trial or identifying business receipts.

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Birthday attack

A birthday attack is a type of cryptographic attack that exploits the mathematics behind the birthday problem in probability theory.

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Bit

The bit (a portmanteau of binary digit) is a basic unit of information used in computing and digital communications.

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Byte

The byte is a unit of digital information that most commonly consists of eight bits, representing a binary number.

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Certificate authority

In cryptography, a certificate authority or certification authority (CA) is an entity that issues digital certificates.

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Chaos Communication Congress

The Chaos Communication Congress is an annual conference organized by the Chaos Computer Club.

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Checksum

A checksum is a small-sized datum derived from a block of digital data for the purpose of detecting errors which may have been introduced during its transmission or storage.

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CNET

CNET (stylized as c|net) is an American media website that publishes reviews, news, articles, blogs, podcasts and videos on technology and consumer electronics globally.

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Collision (computer science)

Collision is used in two slightly different senses in theoretical computer science and telecommunications.

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Collision attack

In cryptography, a collision attack on a cryptographic hash tries to find two inputs producing the same hash value, i.e. a hash collision.

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Collision resistance

Collision resistance is a property of cryptographic hash functions: a hash function H is collision resistant if it is hard to find two inputs that hash to the same output; that is, two inputs a and b such that H(a).

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Comparison of cryptographic hash functions

The following tables compare general and technical information for a number of cryptographic hash functions.

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Cryptographic hash function

A cryptographic hash function is a special class of hash function that has certain properties which make it suitable for use in cryptography.

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Data integrity

Data integrity is the maintenance of, and the assurance of the accuracy and consistency of, data over its entire life-cycle, and is a critical aspect to the design, implementation and usage of any system which stores, processes, or retrieves data.

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Digital signature

A digital signature is a mathematical scheme for presenting the authenticity of digital messages or documents.

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Distributed computing

Distributed computing is a field of computer science that studies distributed systems.

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Electronic discovery

Electronic discovery (also e-discovery or ediscovery) refers to discovery in legal proceedings such as litigation, government investigations, or Freedom of Information Act requests, where the information sought is in electronic format (often referred to as electronically stored information or ESI).

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Endianness

Endianness refers to the sequential order in which bytes are arranged into larger numerical values when stored in memory or when transmitted over digital links.

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Eurocrypt

Eurocrypt (or EUROCRYPT) is a conference for cryptography research.

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Exclusive or

Exclusive or or exclusive disjunction is a logical operation that outputs true only when inputs differ (one is true, the other is false).

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Flame (malware)

Flame, also known as Flamer, sKyWIper, and Skywiper, is modular computer malware discovered in 2012 that attacks computers running the Microsoft Windows operating system.

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Graphics processing unit

A graphics processing unit (GPU) is a specialized electronic circuit designed to rapidly manipulate and alter memory to accelerate the creation of images in a frame buffer intended for output to a display device.

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Hans Dobbertin

Hans Dobbertin (April 17, 1952 – February 2, 2006) was a German cryptographer who is best known for his work on cryptanalysis of the MD4, MD5, and original RIPEMD hash functions, and for his part in the design of the new version of the RIPEMD hash function.

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Hash function

A hash function is any function that can be used to map data of arbitrary size to data of a fixed size.

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Hash function security summary

This article summarizes publicly known attacks against cryptographic hash functions.

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HashClash

HashClash was a distributed computing project to find collisions in the MD5 hash algorithm.

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Hexadecimal

In mathematics and computing, hexadecimal (also base, or hex) is a positional numeral system with a radix, or base, of 16.

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IBM System p

The System p, formerly known as RS/6000, was IBM's RISC/UNIX-based server and workstation product line.

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Initialization vector

In cryptography, an initialization vector (IV) or starting variable (SV) is a fixed-size input to a cryptographic primitive that is typically required to be random or pseudorandom.

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Institute of Electrical and Electronics Engineers

The Institute of Electrical and Electronics Engineers (IEEE) is a professional association with its corporate office in New York City and its operations center in Piscataway, New Jersey.

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Jacob Appelbaum

Jacob Appelbaum (born 1 April 1983) is an American independent journalist, computer security researcher, artist, and hacker.

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Key stretching

In cryptography, key stretching techniques are used to make a possibly weak key, typically a password or passphrase, more secure against a brute-force attack by increasing the time it takes to test each possible key.

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Lausanne

Lausanne (Lausanne Losanna, Losanna) is a city in the French-speaking part of Switzerland, and the capital and biggest city of the canton of Vaud.

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Length extension attack

In cryptography and computer security, a length extension attack is a type of attack where an attacker can use Hash(message1) and the length of message1 to calculate Hash(message1 ‖ message2) for an attacker-controlled message2.

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Logical conjunction

In logic, mathematics and linguistics, And (∧) is the truth-functional operator of logical conjunction; the and of a set of operands is true if and only if all of its operands are true.

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Logical disjunction

In logic and mathematics, or is the truth-functional operator of (inclusive) disjunction, also known as alternation; the or of a set of operands is true if and only if one or more of its operands is true.

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Marc Stevens (cryptology)

Dr.

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Massachusetts Institute of Technology

The Massachusetts Institute of Technology (MIT) is a private research university located in Cambridge, Massachusetts, United States.

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MD2 (cryptography)

The MD2 Message-Digest Algorithm is a cryptographic hash function developed by Ronald Rivest in 1989.

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MD4

The MD4 Message-Digest Algorithm is a cryptographic hash function developed by Ronald Rivest in 1990.

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MD5CRK

In cryptography, MD5CRK was a distributed effort (similar to distributed.net) launched by Jean-Luc Cooke and his company, CertainKey Cryptosystems, to demonstrate that the MD5 message digest algorithm is insecure by finding a collision — two messages that produce the same MD5 hash.

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Md5deep

md5deep is a software package used in the computer security, system administration and computer forensics communities to run large numbers of files through any of several different cryptographic digests.

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Md5sum

md5sum is a computer program that calculates and verifies 128-bit MD5 hashes, as described in RFC 1321.

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MD6

The MD6 Message-Digest Algorithm is a cryptographic hash function.

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Merkle–Damgård construction

In cryptography, the Merkle–Damgård construction or Merkle–Damgård hash function is a method of building collision-resistant cryptographic hash functions from collision-resistant one-way compression functions.

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Message Passing Interface

Message Passing Interface (MPI) is a standardized and portable message-passing standard designed by a group of researchers from academia and industry to function on a wide variety of parallel computing architectures.

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Microsoft

Microsoft Corporation (abbreviated as MS) is an American multinational technology company with headquarters in Redmond, Washington.

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Negation

In logic, negation, also called the logical complement, is an operation that takes a proposition P to another proposition "not P", written \neg P (¬P), which is interpreted intuitively as being true when P is false, and false when P is true.

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Nibble

In computing, a nibble (occasionally nybble or nyble to match the spelling of byte) is a four-bit aggregation, or half an octet.

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Octet (computing)

The octet is a unit of digital information in computing and telecommunications that consists of eight bits.

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One-way compression function

In cryptography, a one-way compression function is a function that transforms two fixed-length inputs into a fixed-length output.

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Padding (cryptography)

In cryptography, padding refers to a number of distinct practices.

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PlayStation 3

The PlayStation 3 (PS3) is a home video game console developed by Sony Computer Entertainment.

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PostScript

PostScript (PS) is a page description language in the electronic publishing and desktop publishing business.

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PowerShell

PowerShell is a task automation and configuration management framework from Microsoft, consisting of a command-line shell and associated scripting language.

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Preimage attack

In cryptography, a preimage attack on cryptographic hash functions tries to find a message that has a specific hash value.

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Public key certificate

In cryptography, a public key certificate, also known as a digital certificate or identity certificate, is an electronic document used to prove the ownership of a public key.

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RIPEMD

RIPEMD (RACE Integrity Primitives Evaluation Message Digest) is a family of cryptographic hash functions developed in Leuven, Belgium, by Hans Dobbertin, Antoon Bosselaers and Bart Preneel at the COSIC research group at the Katholieke Universiteit Leuven, and first published in 1996.

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Ron Rivest

Ronald Linn Rivest (born May 6, 1947) is a cryptographer and an Institute Professor at MIT.

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RSA Security

RSA Security LLC, formerly RSA Security, Inc. and doing business as RSA, is an American computer and network security company.

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SHA-1

In cryptography, SHA-1 (Secure Hash Algorithm 1) is a cryptographic hash function which takes an input and produces a 160-bit (20-byte) hash value known as a message digest - typically rendered as a hexadecimal number, 40 digits long.

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SHA-2

SHA-2 (Secure Hash Algorithm 2) is a set of cryptographic hash functions designed by the United States National Security Agency (NSA).

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Software

Computer software, or simply software, is a generic term that refers to a collection of data or computer instructions that tell the computer how to work, in contrast to the physical hardware from which the system is built, that actually performs the work.

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Software Engineering Institute

The Software Engineering Institute (SEI) is an American research and development center headquartered in Pittsburgh, Pennsylvania.

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Sony

is a Japanese multinational conglomerate corporation headquartered in Kōnan, Minato, Tokyo.

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Springer Science+Business Media

Springer Science+Business Media or Springer, part of Springer Nature since 2015, is a global publishing company that publishes books, e-books and peer-reviewed journals in science, humanities, technical and medical (STM) publishing.

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Stefan Lucks

Stefan Lucks is a researcher in the fields of communications security and cryptography.

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The quick brown fox jumps over the lazy dog

"The quick brown fox jumps over the lazy dog" is an English-language pangram—a sentence that contains all of the letters of the alphabet.

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Transport Layer Security

Transport Layer Security (TLS) – and its predecessor, Secure Sockets Layer (SSL), which is now deprecated by the Internet Engineering Task Force (IETF) – are cryptographic protocols that provide communications security over a computer network.

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United States Cyber Command

United States Cyber Command (USCYBERCOM) is one of ten unified commands of the United States Department of Defense.

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Verisign

Verisign, Inc. is an American company based in Reston, Virginia, United States that operates a diverse array of network infrastructure, including two of the Internet's thirteen root nameservers, the authoritative registry for the,, and generic top-level domains and the and country-code top-level domains, and the back-end systems for the,, and top-level domains.

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Vlastimil Klíma

RNDr. Vlastimil Klíma (*19th February 1957 in Benešov, Czech Republic) is a leading cryptographer, computer security expert, and white hat hacker.

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Wired (magazine)

Wired is a monthly American magazine, published in print and online editions, that focuses on how emerging technologies affect culture, the economy, and politics.

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X.509

In cryptography, X.509 is a standard that defines the format of public key certificates.

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Xiaoyun Wang

Xiaoyun Wang (born 1966) is a researcher and professor in the Department of Mathematics and System Science, Shandong University, Shandong, China.

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Xuejia Lai

Xuejia Lai is a cryptographer, currently a professor at Shanghai Jiao Tong University.

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References

[1] https://en.wikipedia.org/wiki/MD5

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