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24 SHA3-224 224 1600 1152 – 64 24 SHA3-256 256 1600 1088 – 64 24 SHA3-384 384 1600 832 – 64 24 SHA3-512 512 1600 576 – 64 24 Tiger(2)-192/160/128: 192/160/128 192 512 64 64 24 Whirlpool: 512 512 512 256 8 10
3.0.0 (July 7, 2021; 3 years ago () [21. 2.27.0 (July 7, 2021; 3 years ago (2.16.11 (July 7, 2021; 3 years ago (NaCl: Daniel J. Bernstein, Tanja Lange, Peter Schwabe: C: Yes: Public domain: February 21, 2011 [22] Nettle: C: Yes: GNU GPL v2+ or GNU LGPL v3: 3.10.1 [23] 2024-12-30 Network Security Services (NSS) Mozilla: C: Yes: MPL 2.0
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.
[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.
SHA-256: 256 bits Merkle–Damgård construction: SHA-384: 384 bits Merkle–Damgård construction: SHA-512: 512 bits Merkle–Damgård construction: SHA-3 (subset of Keccak) arbitrary sponge function: Skein: arbitrary Unique Block Iteration: Snefru: 128 or 256 bits hash Spectral Hash: 512 bits wide-pipe Merkle–Damgård construction Streebog ...
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.
Function Mix Inputs: V a, V b, V c, V d four 8-byte word entries from the work vector V x, y two 8-byte word entries from padded message m Output: V a, V b, V c, V d the modified versions of V a, V b, V c, V d V a ← V a + V b + x with input V d ← (V d xor V a) rotateright 32 V c ← V c + V d no input V b ← (V b xor V c) rotateright 24 V ...
As of October 2012, CNSSP-15 [4] stated that the 256-bit elliptic curve (specified in FIPS 186-2), SHA-256, and AES with 128-bit keys are sufficient for protecting classified information up to the Secret level, while the 384-bit elliptic curve (specified in FIPS 186-2), SHA-384, and AES with 256-bit keys are necessary for the protection of Top ...