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Cryptographic hash function
Wikifunctions has an SHA-1 function. In cryptography, SHA-1 (Secure Hash Algorithm 1) is a hash function which takes an input and produces a 160-bit (20-byte)
SHA-1
Set of cryptographic hash functions
of the same series of standards, SHA-3 is internally different from the MD5-like structure of SHA-1 and SHA-2. SHA-3 is a subset of the broader cryptographic
SHA-3
Family of cryptographic hash functions
SHA), FIPS PUB 180-1 (SHA-1), FIPS PUB 180-2 (SHA-1, SHA-256, SHA-384, and SHA-512). NIST has updated Draft FIPS Publication 202, SHA-3 Standard separate
Secure_Hash_Algorithms
Set of cryptographic hash functions
that are 224, 256, 384 or 512 bits: SHA-224, SHA-256, SHA-384, SHA-512, SHA-512/224, SHA-512/256. SHA-256 and SHA-512 are hash functions whose digests
SHA-2
Hash function that is suitable for use in cryptography
truncated output. SHA-384 and the lesser-known SHA-512/224 and SHA-512/256 are all variants of SHA-512. SHA-512 is more secure than SHA-256 and is commonly
Cryptographic_hash_function
Computer communications authentication algorithm
key prior to communication. Any cryptographic hash function, such as SHA-2 or SHA-3, may be used in the calculation of an HMAC; the resulting MAC algorithm
HMAC
Type of challenge–response authentication
advertised by the server and chosen by the client. 'SCRAM-SHA-1' for instance, uses SHA-1 as hash function. The client derives a key, or salted password
Salted Challenge Response Authentication Mechanism
Salted_Challenge_Response_Authentication_Mechanism
2000 studio album by Ben Kweller
Sha Sha is the debut album by American indie rock singer, songwriter, multi-instrumentalist and former Radish member Ben Kweller. The album was originally
Sha_Sha_(album)
Standard for cryptographic certificates
certificates that use SHA-1. As of May 2017[update] both Edge and Safari are also rejecting SHA-1 certificate. OpenSSL began rejecting SHA-1 certificates by
X.509
Cryptographic protocols for securing data in transit
SHA-1 combination in the pseudorandom function (PRF) was replaced with SHA-256, with an option to use cipher suite specified PRFs. The MD5 and SHA-1 combination
Transport_Layer_Security
Message-digest hashing algorithm
enough for cryptographers to recommend switching to a replacement, such as SHA-1 (also compromised since) or RIPEMD-160. The size of the hash value (128
MD5
System that regulates the formation of blocks on a blockchain
idea of "reusable proof of work" using the 160-bit secure hash algorithm 1 (SHA-1). Proof of work was later popularized by Bitcoin as a foundation for consensus
Proof_of_work
Peer-to-peer file sharing protocol
cryptographic hash function, SHA-1, is no longer considered safe from malicious attacks by the developers, and as such, v2 uses SHA-256. To ensure backwards
BitTorrent
Type of data structure
child nodes under each node. Usually, a cryptographic hash function such as SHA-2 is used for the hashing. If the hash tree only needs to protect against
Merkle_tree
Distributed version control software system
the packfile and its index have an SHA-1 checksum inside, and the file name of the packfile also contains an SHA-1 checksum. To check the integrity of
Git
128-bit number used to identify information in computer systems
uniqueness of the UUID. Version-5 UUIDs are similar, but SHA-1 is used instead of MD5. Since SHA-1 generates 160-bit digests, the digest is truncated to
Universally_unique_identifier
Scheme that defines the format of magnet links
Algorithm 1 (SHA-1) These hash sums are used on gnutella and G2 (Gnutella2). xt=urn:sha1:[ SHA-1 Hash (Base32) ] BitPrint Such hash sums consist of an SHA-1 Hash
Magnet_URI_scheme
Extensions to the x86 instruction set architecture
which support hardware acceleration of the Secure Hash Algorithm (SHA) family. SHA-1 and SHA-256 instructions appeared as optional features (FEAT_SHA1 and
SHA_instruction_set
Password-based key derivation function
password file: $1$: MD5-based crypt ('md5crypt') $2$: Blowfish-based crypt ('bcrypt') $sha1$: SHA-1-based crypt ('sha1crypt') $5$: SHA-256-based crypt
Bcrypt
Open-source password management software
the user’s information, blowfish encrypted data is authenticated with the SHA-1 hashing algorithm. KDE Wallet manager’s blowfish encryption provides faster
KWallet
BitTorrent-related file format
144 B. pieces—a hash list, i.e., a concatenation of each piece's SHA-1 hash. As SHA-1 returns a 160-bit hash, pieces will be a string whose length is a
Torrent_file
System for dealing with email spam
160-bit SHA-1 hash of the entire string (e.g., "1:20:060408:adam@cypherspace.org::1QTjaYd7niiQA/sc:ePa"). This takes about two microseconds on a 1 GHz machine
Hashcash
Practice and study of secure communication techniques
Algorithm series of MD5-like hash functions: SHA-0 was a flawed algorithm that the agency withdrew; SHA-1 is widely deployed and more secure than MD5,
Cryptography
Competition to develop SHA-3
Technology (NIST) to develop a new hash function called SHA-3 to complement the older SHA-1 and SHA-2. The competition was formally announced in the Federal
NIST hash function competition
NIST_hash_function_competition
Authenticated encryption mode for block ciphers
"AES-GCM for Efficient Authenticated Encryption – Ending the Reign of HMAC-SHA-1?" (PDF). Workshop on Real-World Cryptography. Retrieved 8 February 2013
Galois/Counter_Mode
Key derivation function
therefore, when using HMAC-SHA1, it is pre-hashed using SHA-1 into: SHA1 (hex): 65426b585154667542717027635463617226672a Which can be
PBKDF2
Cryptographic hash function
function competition. Entered as a candidate to become the SHA-3 standard, the successor of SHA-1 and SHA-2, it ultimately lost to NIST hash candidate Keccak
Skein_(hash_function)
Cryptographic hash function
than MD5, SHA-1, SHA-2, and SHA-3, on 64-bit x86-64 and ARM architectures. Its creators state that BLAKE2 provides better security than SHA-2 and similar
BLAKE_(hash_function)
Study of analyzing information systems in order to discover their hidden aspects
order of magnitude of their attacks' difficulty, saying, for example, "SHA-1 collisions now 252." Bruce Schneier notes that even computationally impractical
Cryptanalysis
Cryptographic attack
Application to Full SHA-1" (PDF). Gaëtan Leurent; Thomas Peyrin (2020-01-05). "SHA-1 is a Shambles - First Chosen-Prefix Collision on SHA-1 and Application
Collision_attack
64-bit extension of the ARM architecture
floating-point format Fully IEEE 754 compliant AES encrypt/decrypt and SHA-1/SHA-2 hashing instructions also use these registers A new exception system:
AArch64
Information used for message authentication and integrity checking
(TLS) versions before 1.2, the input data is split in halves that are each processed with a different hashing primitive (SHA-1 and SHA-2) then XORed together
Message_authentication_code
Key derivation function based on an HMAC
is SHA256. # hash_function_extract = hashlib.sha512 # RFC5869 includes SHA-1 test vectors hash_function = hashlib.sha256 def hmac_digest(key: bytes,
HKDF
Traditional East Asian medicine practice involving skin scraping
Gua sha or scraping therapy is a pseudoscientific practice in traditional Chinese medicine (TCM) in which an object is used to scrape the skin, for purported
Gua_sha
Commercial service for proxied Internet access
systems use 4096 bit. iOS 8 and earlier use SHA-1. All other supported devices and operating systems use SHA-256. The following definitions clarify the
VPN_service
Password cracking dataset
variety of character sets and hashing algorithms, including LM hash, MD5, and SHA-1. In the simple case where the reduction function and the hash function have
Rainbow_table
Attack against cryptographical hash functions
MD5, SHA-1 and most of SHA-2 that are based on the Merkle–Damgård construction are susceptible to this kind of attack. Truncated versions of SHA-2, including
Length_extension_attack
Hash functions
attacker to find two messages X and Y such that SHA(X) = SHA(Y), even though anyone may compute SHA(X). SipHash instead guarantees that, having seen
SipHash
Suite of IETF specifications
example of this would be migrating from Algorithm 8 (RSA/SHA-256) to Algorithm 13 (ECDSA/SHA-256). Several ccTLD's have already migrated including .at
Domain Name System Security Extensions
Domain_Name_System_Security_Extensions
USB drive software
compute the MD5, SHA-1 and SHA-256 hashes of the currently selected image. Rufus is capable of downloading retail ISO DVD images of Windows 8.1, various builds
Rufus_(software)
Cryptography algorithm
− 1 ⊕ C i − 1 ) , P 0 ⊕ C 0 = I V , {\displaystyle C_{i}=E_{K}(P_{i}\oplus P_{i-1}\oplus C_{i-1}),P_{0}\oplus C_{0}=IV,} P i = D K ( C i ) ⊕ P i − 1 ⊕
Block cipher mode of operation
Block_cipher_mode_of_operation
Zimbabwean-born singer (born 1994)
Charmaine Shamiso Mapimbiro (born 13 July 1994), professionally known as Sha Sha, is a Zimbabwean-born singer-songwriter from Mutare. Hailed by many as
Sha_Sha_(singer)
Cryptographic hash function
128 bits. The algorithm has influenced later designs, such as the MD5, SHA-1 and RIPEMD algorithms. The initialism "MD" stands for "Message Digest".
MD4
Random number generator
electronic noise from the camera's sensor, is then processed using the SHA-1 hash algorithm to extract its unpredictability. The hashing step produces
Lavarand
Software that calculates and verifies SHA-1 hashes
sha1sum is a computer program that calculates and verifies SHA-1 hashes. It is commonly used to verify the integrity of files. It (or a variant) is installed
Sha1sum
Cryptography number with no hidden properties
the hash constants in their "Secure Hash Algorithm" functions, SHA-1 and SHA-2. SHA-1 also uses 0123456789ABCDEFFEDCBA9876543210F0E1D2C3 as its initial
Nothing-up-my-sleeve_number
Specific software-based key for a computer program
the first eight bytes of an SHA-1 message digest. Then one round of decryption looks as follows. L' = R ^ First-8(SHA-1(L + Key)) R' = L The result of
Product_key
Theory of cryptography
sponge with a 1600-bit state has been selected by NIST as the winner in the SHA-3 competition. The strength of Keccak derives from the intricate, multi-round
Sponge_function
Techniques to protect against brute-force attack
usually SHA-2 (up to 512 bits), or used as an encryption key to encrypt static data. These examples assume that a consumer CPU can do about 65,000 SHA-1 hashes
Key_stretching
Method of building collision-resistant cryptographic hash functions
was used in the design of many popular hash algorithms such as MD5, SHA-1, and SHA-2. The Merkle–Damgård construction was described in Ralph Merkle's Ph
Merkle–Damgård_construction
2001 Microsoft operating system version
the Windows Update service for SHA-1 endpoints for older Windows versions. Since Windows XP did not get an update for SHA-2, Windows Update Services are
Windows_XP
List of versions of the Java programming language
several changes since JDK 1.0 as well as numerous additions of classes and packages to the standard library. Since J2SE 1.4, the evolution of the Java
Java_version_history
are trying to phase out the new issuance of certificates with the older SHA-1 signature hash algorithm. The continuing use of SGC facilitates the use
Server-Gated_Cryptography
Cryptographic hash function
hash result is necessary. While RIPEMD functions are less popular than SHA-1 and SHA-2, they are used, among others, in Bitcoin and other cryptocurrencies
RIPEMD
Peer-to-peer overlay network
protocol. The DHT operates by distributing lists of peers identified by the SHA-1 hash of the torrent. Each client randomly selects a 160-bit node ID, and
Mainline_DHT
Software update distribution service for Microsoft Windows
SHA-1 updates. As of 2021[update], the old updates for 2000 through Vista are still available on the Microsoft Update Catalog. On the same day, SHA-1
Windows_Update
Cryptographic network protocol
improved data integrity checking via message authentication codes like MD5 or SHA-1, which can be negotiated between client and server. SSH-2 also adds stronger
Secure_Shell
Attack model against cryptographic hash functions
practical. All currently known practical or almost-practical attacks on MD5 and SHA-1 are collision attacks. In general, a collision attack is easier to mount
Preimage_attack
Block cipher
SHACAL-1 (originally simply SHACAL) is a 160-bit block cipher based on SHA-1, and supports keys from 128-bit to 512-bit. SHACAL-2 is a 256-bit block cipher
SHACAL
Israeli political party
Shas (Hebrew: ש״ס) is a Haredi religious political party in Israel. Founded in 1984 by Rabbi Ovadia Yosef, a former Israeli Sephardi chief rabbi, who remained
Shas
Package format used by Android
of resources and a SHA-1 digest of the corresponding lines in the MANIFEST.MF file; for example: Signature-Version: 1.0 Created-By: 1.0 (Android) SHA1-Digest-Manifest:
Apk_(file_format)
Cryptographic protocol
length, the Diffie–Hellman key exchange with 1536 bits group size, and the SHA-1 hash function. In addition to authentication and encryption, OTR provides
Off-the-Record Messaging protocol
Off-the-Record_Messaging_protocol
Open-source file archiver
the Unix binaries. Calculating Blake2SP, CRC-32, CRC-64, MD5, SHA-1, SHA-256, SHA-384, SHA-512, SHA3-256, and XXH64 checksums for disk files, available
7-Zip
Open source command line archiver for Windows and Linux
meta-data such as size, date, and attributes, and an optional trailing SHA-1 checksum of the original data for integrity checking. If the file name is
ZPAQ
Word processor
Encryption Standard (AES) that converts a password to a 128-bit key using a SHA-1 hash function 50,000 times. It makes password removal impossible (as of
Microsoft_Word
Cryptographic secret, not public in contrast to salt
Function (PBKDF) with an approved Pseudorandom Function such as HMAC with SHA-3 as the hash function of the HMAC. The NIST recommendation is also to perform
Pepper_(cryptography)
Open-source e-commerce platform
Security; Vulnerabilities; Malware; Sites cling to a million flawed, fading SHA-1 certificates: Netcraft; shops, Neutrino exploit kit attacks hit thousands
Magento
Tables comparing general and technical information for common hashes
values. The maximum input size = 2length size − 1 bits. For example, the maximum input size of SHA-1 = 264 − 1 bits. List of hash functions Hash function security
Comparison of cryptographic hash functions
Comparison_of_cryptographic_hash_functions
Property of cryptographic hash functions
were once thought to be collision resistant were later broken. MD5 and SHA-1 in particular both have published techniques more efficient than brute force
Collision_resistance
Publicly known attacks against cryptographic hash functions
Reduced SHA-0 and SHA-1. Crypto 2008. Kazumaro Aoki; Jian Guo; Krystian Matusiewicz; Yu Sasaki; Lei Wang (2009-12-10). Preimages for Step-Reduced SHA-2. Asiacrypt
Hash function security summary
Hash_function_security_summary
Concept in cryptography
ISBN 0-387-16463-4. Vaughn, R.; Borowczak, M. Strict Avalanche Criterion of SHA-256 and Sub-Function-Removed Variants. Cryptography 2024, 8, 40. https://doi
Avalanche_effect
Type of cryptographic attack
popular hash functions such as the MD and SHA families. The subexpression ln 1 1 − p {\displaystyle \ln {\frac {1}{1-p}}} in the equation for n ( p ; H )
Birthday_attack
Short sequence of bytes used to authenticate or look up a longer public key
the previous step is hashed with a cryptographic hash function such as SHA-1 or SHA-2. If desired, the hash function output can be truncated to provide a
Public_key_fingerprint
Chinese computer scientist
to find a collision in SHA-1. Their work was published at the CRYPTO '05 conference. In August 2005, an improved attack on SHA-1, discovered by Wang, Andrew
Wang_Xiaoyun
Urban area in Kowloon, Hong Kong
Tsim Sha Tsui (Chinese: 尖沙咀), often abbreviated as TST, is an area in southern Kowloon, Hong Kong. The area is administratively part of the Yau Tsim Mong
Tsim_Sha_Tsui
Free peer-to-peer file sharing application for Microsoft Windows
corruption handling competitive with BitTorrent. SHA-1 hashes are computed for each 180 KiB sub-chunk and a whole SHA-1 hash tree is formed. AICH is processed purely
EMule
Pseudorandom number generator file in Unix-like operating systems
of the Linux kernel, the random number generator switched from using the SHA-1 cryptographic hash function in the entropy collector to BLAKE2s, a newer
/dev/random
Password authentication algorithm
by the authenticated entity: A cryptographic hash method H (default is SHA-1) A secret key K, which is an arbitrary byte string and must remain private
HMAC-based_one-time_password
Method of negotiating credentials between web server and browser
7616 replaced RFC 2617 by adding 4 new algorithms: "SHA-256", "SHA-256-sess", "SHA-512-256" and "SHA-512-256-sess". The encoding is equivalent to "MD5"
Digest_access_authentication
Key derivation function of password hash
where id: an identifier representing the hashing algorithm (such as 1 for MD5, 5 for SHA-256 etc.) param name and its value: hash complexity parameters, like
Crypt_(C)
District in Hong Kong
Kong. Administratively, it is part of the Sha Tin District. Sha Tin is one of the neighbourhoods of the Sha Tin New Town project. The new town was founded
Sha_Tin
Cryptographic hash function
Interagency Report 7764 (February 2011). "Status Report on the Second Round of the SHA-3 Cryptographic Hash Algorithm Competition" (PDF): 20–21. {{cite journal}}:
Shabal
Set of cryptographic algorithms by the NSA
compared to CNSA 1.0, CNSA 2.0: Suggests separate post-quantum algorithms (XMSS/LMS) for software/firmware signing for use immediately Allows SHA-512 Announced
Commercial National Security Algorithm Suite
Commercial_National_Security_Algorithm_Suite
Operation of checking the integrity of file
practice recommendations is to use SHA-2 or SHA-3 to generate new file integrity digests; and to accept MD5 and SHA-1 digests for backward compatibility
File_verification
Secure network protocol suite
RFC 2403: The Use of HMAC-MD5-96 within ESP and AH RFC 2404: The Use of HMAC-SHA-1-96 within ESP and AH RFC 2405: The ESP DES-CBC Cipher Algorithm With Explicit
IPsec
File format for storing file checksums
utilities are often preferred in Unix operating systems, which use the MD5 and SHA-1 cryptographic hash functions respectively. Even a single-bit error causes
Simple_file_verification
Measure of cryptographic strength
costliest demonstrated attack on hash functions is the 261.2 attack on SHA-1, which took 2 months on 900 GTX 1060 GPUs, and cost US$75,000 (although
Security_level
Network storage system
a network storage system that permanently stores data blocks. A 160-bit SHA-1 hash of the data (called score by Venti) acts as the address of the data
Venti_(software)
Password-based key derivation function
The function is more resistant to offline password-cracking attacks than SHA-512. It is based on scrypt. It was designed by Alexander Peslyak, also known
Yescrypt
American rapper
Sha-Rock began as a local b-girl, or breakdancer, in the early days of South Bronx hip hop scene and culture in the late 1970s. The Funky 4 + 1, Sha-Rock
Sha-Rock
Decentralized distributed system with lookup service
160-bit strings. To index a file with given filename and data in the DHT, the SHA-1 hash of filename is generated, producing a 160-bit key k, and a message
Distributed_hash_table
Details of the open standard for office documents
of the compressed file is computed (SHA-1 of the file contents, or SHA-1 of the first 1024 bytes of the file, or SHA-256 of the first 1024 bytes of the
OpenDocument technical specification
OpenDocument_technical_specification
done. Only a few years ago[when?], one of the most popular hash functions, SHA-1, was shown to be less secure than its length suggested: collisions could
Security of cryptographic hash functions
Security_of_cryptographic_hash_functions
Device communications bus system
communication with a DS2432 (1 kbit EEPROM with SHA-1 Engine) chip, and measured with a logic analyzer. A logic high on the 1-Wire output, means the output
1-Wire
Unix-based computer security tool
rootkits, backdoors and possible local exploits. It does this by comparing SHA-1 hashes of important files with known good ones in online databases, searching
Rkhunter
Russian cryptographic hash function
defined in the old standard GOST R 34.11-94, and as an asymmetric reply to SHA-3 competition by the US National Institute of Standards and Technology. The
Streebog
efficient calculation of cryptographic primitives, such as e.g. AES encryption, SHA hash calculation and random number generation. 6 new instructions. The SubBytes
List of x86 cryptographic instructions
List_of_x86_cryptographic_instructions
French computer scientist and hacker (born 1980)
child sexual abuse material in partnership with NCMEC. 2017 Finding the 1st SHA-1 full collision. 2015 Deprecating security questions at Google after completing
Elie_Bursztein
Cryptographic hash function
to the NIST SHA-3 competition. However, on July 1, 2009, Rivest posted a comment at NIST that MD6 is not yet ready to be a candidate for SHA-3 because of
MD6
Cryptographic hash function
number generators. The algorithm is public and is considered similar to SHA-256 in security and efficiency. SM3 can be used with Transport Layer Security
SM3_(hash_function)
SHA 1
SHA 1
SHA 1
SHA 1
SHA 1
SHA 1
SHA 1
SHA 1
SHA 1