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SHA-2: A family of two similar hash functions, with different block sizes, known as SHA-256 and SHA-512. They differ in the word size; SHA-256 uses 32-bit words where SHA-512 uses 64-bit words. There are also truncated versions of each standard, known as SHA-224, SHA-384, SHA-512/224 and SHA-512/256. These were also designed by the NSA.
Operations [note 3] Endian [note 4] Word Digest Chaining values [note 5] Computation values [note 6] Block Length [note 7] GOST R 34.11-94: 32 ×8 = 256: ×8 = 256: 32 4 A B L S Little HAVAL-3-128: 32 ×4 = 128: ×8 = 256: ×32 = 1,024: 64 32 × 3 = 96: A B S Little HAVAL-3-160: ×5 = 160: HAVAL-3-192: ×6 = 192: HAVAL-3-224: ×7 = 224: HAVAL-3 ...
[1] [2] [3] Truncated versions of SHA-2, including SHA-384 and SHA-512/256 are not susceptible, [4] nor is the SHA-3 algorithm. [5] HMAC also uses a different construction and so is not vulnerable to length extension attacks. [6] Lastly, just performing Hash(message ‖ secret) is enough to not be affected. [citation needed]
8.4 cpb on Core 2 for BLAKE-256; 7.8 cpb for BLAKE-512 BLAKE is a cryptographic hash function based on Daniel J. Bernstein 's ChaCha stream cipher , but a permuted copy of the input block, XORed with round constants, is added before each ChaCha round.
SHA-2 (Secure Hash Algorithm 2) is a set of cryptographic hash functions designed by the United States National Security Agency (NSA) and first published in 2001. [3] [4] They are built using the Merkle–Damgård construction, from a one-way compression function itself built using the Davies–Meyer structure from a specialized block cipher.
Crypto-C Micro Edition: 4.1.5 (December 17, 2020; 4 years ago () [7. Micro Edition Suite: 5.0.3 (December 3, 2024; 59 days ago () [8 Crypto-J: 7.0 (September 7, 2022; 2 years ago () [9. 6.3 (April 4, 2023; 21 months ago () [10. cryptlib: Peter Gutmann: C: Yes
RFC 7677, SCRAM-SHA-256 and SCRAM-SHA-256-PLUS: Simple Authentication and Security Layer (SASL) Mechanisms; RFC 7804, Salted Challenge Response HTTP Authentication Mechanism; RFC 8600, Using Extensible Messaging and Presence Protocol (XMPP) for Security Information Exchange; RFC 8621, The JSON Meta Application Protocol (JMAP) for Mail
A mask generation function (MGF) is a cryptographic primitive similar to a cryptographic hash function except that while a hash function's output has a fixed size, a MGF supports output of a variable length.