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[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]
Algorithm Output size (bits) Internal state size [note 1] Block size Length size Word size Rounds; BLAKE2b: 512 512 1024 128 [note 2]: 64 12 BLAKE2s: 256 256 512 64 [note 3]: 32 10
SHA-0: A retronym applied to the original version of the 160-bit hash function published in 1993 under the name "SHA". It was withdrawn shortly after publication due to an undisclosed "significant flaw" and replaced by the slightly revised version SHA-1.
numeric hash (nhash) [7] variable division/modulo xxHash [8] 32, 64 or 128 bits product/rotation t1ha (Fast Positive Hash) [9] 64 or 128 bits product/rotation/XOR/add GxHash [10] 32, 64 or 128 bits AES block cipher pHash [11] fixed or variable see Perceptual hashing: dhash [12] 128 bits see Perceptual hashing: SDBM [2] [13] 32 or 64 bits mult ...
Jan 10, 2023 (8.9.0) GnuTLS: Nikos Mavrogiannopoulos, Simon Josefsson: C: Yes: LGPL-2.1-or-later: 3.8.8 [12] 2024-11-05 Java's default JCA/JCE providers: Oracle: Java: Yes: GNU GPL v2 and commercial license: 23.0.1 (October 15, 2024; 3 months ago () [13 21.0.5 LTS (October 15, 2024; 3 months ago () [14 17.0.13 LTS (October 15, 2024; 3 months ...
Algorithm BLAKE2b Input: M Message to be hashed cbMessageLen: Number, (0..2 128) Length of the message in bytes Key Optional 0..64 byte key cbKeyLen: Number, (0..64) Length of optional key in bytes cbHashLen: Number, (1..64) Desired hash length in bytes Output: Hash Hash of cbHashLen bytes Initialize State vector h with IV h 0..7 ← IV 0..7 ...
The original SSE-based extensions added four instructions supporting SHA-1 and three for SHA-256. SHA-1: SHA1RNDS4 , SHA1NEXTE , SHA1MSG1 , SHA1MSG2 SHA-256: SHA256RNDS2 , SHA256MSG1 , SHA256MSG2
As of 2017, collisions but not preimages can be found in MD5 and SHA-1. The future is therefore likely to bring increasing use of newer hash functions such as SHA-256. However, fingerprints based on SHA-256 and other hash functions with long output lengths are more likely to be truncated than (relatively short) MD5 or SHA-1 fingerprints.