Search results
Results From The WOW.Com Content Network
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 It was withdrawn shortly after publication due to an undisclosed "significant flaw" and replaced by the slightly revised version SHA-1.
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.
The following tables compare general and technical information for a number of cryptographic hash functions. See the individual functions' articles for further information.
FIPS PUB 140-2 Security Requirements for Cryptographic Modules 2001, defines four increasing security levels FIPS PUB 171 Key Management Using ANSI X9.17 (ANSI X9.17-1985) 1992, based on DES FIPS PUB 180-2 Secure Hash Standard (SHS) 2002 defines the SHA family
SSL 2.0 (insecure) SSL 3.0 (insecure) TLS 1.0 (deprecated) TLS 1.1 (deprecated) TLS 1.2 TLS 1.3 EV certificate SHA-2 certificate ECDSA certificate BEAST CRIME POODLE (SSLv3) RC4 FREAK Logjam Protocol selection by user Apple Safari (mobile) [n 35] 3 iPhone OS 1, 2: No [102] Yes Yes No No No No No No Vulnerable Not affected Vulnerable Vulnerable ...
And, Xor, Or, Rot, Add (mod 2 32) < 34 (collisions found) 0: ≈ SHA-1: ≈ SHA-1: 1993 SHA-1 < 63 (collisions found) [3] 3.47: 52.00: 1995 SHA-2: SHA-224 SHA-256: 224 256: 256 (8 × 32) 512: 64: And, Xor, Or, Rot, Shr, Add (mod 2 32) 112 128: 32 0: 7.62 7.63: 84.50 85.25: 2004 2001 SHA-384: 384: 512 (8 × 64) 1024: 80: And, Xor, Or, Rot, Shr ...
BLAKE2b is faster than MD5, SHA-1, SHA-2, and SHA-3, on 64-bit x86-64 and ARM architectures. [4] BLAKE2 provides better security than SHA-2 and similar to that of SHA-3: immunity to length extension, indifferentiability from a random oracle, etc. [6]
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.