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BLAKE was submitted to the NIST hash function competition by Jean-Philippe Aumasson, Luca Henzen, Willi Meier, and Raphael C.-W. Phan. In 2008, there were 51 entries. BLAKE made it to the final round consisting of five candidates but lost to Keccak in 2012, which was selected for the SHA-3 algorithm.
In cryptography and computer security, a length extension attack is a type of attack where an attacker can use Hash(message 1) and the length of message 1 to calculate Hash(message 1 ‖ message 2) for an attacker-controlled message 2, without needing to know the content of message 1.
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.
A B S Big SHA-1: SHA-256: ×8 = 256: ×8 = 256: 16 × 4 = 64: SHA-224: ×7 = 224: SHA-512: 64 ×8 = 512: ×8 = 512: ×16 = 1024: 128 16 × 5 = 80: SHA-384: ×6 = 384: Tiger-192: 64 ×3 = 192: ×3 = 192: ×8 = 512: 64 8 × 3 = 24: A B L S Not Specified Tiger-160: ×2.5=160 Tiger-128: ×2 = 128: Function Word Digest Chaining values Computation ...
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.
Paul Hsieh's SuperFastHash [1] 32 bits Buzhash: variable XOR/table Fowler–Noll–Vo hash function (FNV Hash) 32, 64, 128, 256, 512, or 1024 bits xor/product or product/XOR Jenkins hash function: 32 or 64 bits XOR/addition Bernstein's hash djb2 [2] 32 or 64 bits shift/add or mult/add or shift/add/xor or mult/xor PJW hash / Elf Hash: 32 or 64 bits
Second-preimage resistance implies preimage resistance only if the size of the hash function's inputs can be substantially (e.g., factor 2) larger than the size of the hash function's outputs. [1] Conversely, a second-preimage attack implies a collision attack (trivially, since, in addition to x ′ , x is already known right from the start).
3.10.1 [23] 2024-12-30 Network Security Services (NSS) Mozilla: C: Yes: MPL 2.0: ... (kSLOC = 1000 lines of source code) Code to comment lines ratio Botan: 133 [58] 4 ...