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SHA-3 (Secure Hash Algorithm 3) is the latest [4] member of the Secure Hash Algorithm family of standards, released by NIST on August 5, 2015. [5] [6] [7] Although part of the same series of standards, SHA-3 is internally different from the MD5-like structure of SHA-1 and SHA-2.
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. SHA-3: A hash function formerly called Keccak, chosen in 2012 after a public competition among non-NSA designers ...
SHA-256 SHA-384 SHA-512: 2002 SHA-224: 2004 SHA-3 (Keccak) 2008 Guido Bertoni Joan Daemen Michaël Peeters Gilles Van Assche: RadioGatún: Website Specification: Streebog: 2012 FSB, InfoTeCS JSC RFC 6986: Tiger: 1995 Ross Anderson Eli Biham: Website Specification: Whirlpool: 2004 Vincent Rijmen Paulo Barreto: Website
Algorithm and variant Output size (bits) Internal state size (bits) Block size (bits) Rounds Operations Security against collision attacks (bits) Security against length extension attacks
NIST SP800-185 SHA-3 Derived Functions: cSHAKE, KMAC, TupleHash, and ParallelHash [15] ISO/IEC 9797-1 Mechanisms using a block cipher [16] ISO/IEC 9797-2 Mechanisms using a dedicated hash-function [17] ISO/IEC 9797-3 Mechanisms using a universal hash-function [18] ISO/IEC 29192-6 Lightweight cryptography - Message authentication codes [19]
Java Java SE network components Thread-safe Depends on java.security.SecureRandom Yes Java based, platform-independent MatrixSSL: C89 None Thread-safe Platform dependent Yes Yes All Mbed TLS: C89 POSIX read() and write(). API to supply your own replacement. Threading layer available (POSIX or own hooks) Random seed set through entropy pool Yes Yes
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.
Main implementation language Open-source software Software license Latest release Botan: Jack Lloyd: C++: Yes: Simplified BSD: 3.6.1 (October 26, 2024; 2 months ago () [1: Bouncy Castle: Legion of the Bouncy Castle Inc. Java, C#: Yes: MIT License