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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
[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. SHA-3 is a subset of the broader cryptographic primitive family Keccak (/ ˈ k ɛ tʃ æ k / or / ˈ k ɛ tʃ ɑː k /), [8] [9] designed by Guido Bertoni, Joan Daemen, Michaël Peeters, and Gilles Van Assche ...
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
Main implementation language Open-source software Software license Latest release Botan: Jack Lloyd: C++: Yes: Simplified BSD: 3.5.0 (July 8, 2024; 6 months ago () [1: Bouncy Castle: Legion of the Bouncy Castle Inc. Java, C#: Yes: MIT License
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
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The XMSS, GMSS and SPHINCS schemes are available in the Java Bouncy Castle cryptographic APIs. [22] LMS [23] and XMSS schemes are available in the wolfSSL cryptographic APIs. [24] SPHINCS is implemented in the SUPERCOP benchmarking toolkit. [25] Optimised [26] and unoptimised [27] reference implementations of the XMSS RFC exist.