اساچای-۲
Sign in to saveAlso known as SHA-512/224, SHA512/256, SHA 2, SHA-224, SHA512/224, SHA256, SHA-512/256, SHA-384
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. 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.
Key facts
- Cryptographic hash function.name
- SHA-2
- Cryptographic hash function.image
- SHA-2.svg
- Cryptographic hash function.designers
- National Security Agency
- Cryptographic hash function.series
- (SHA-0), SHA-1, SHA-2, SHA-3
- Cryptographic hash function.certification
- FIPS PUB 180-4, CRYPTREC, NESSIE
- Cryptographic hash function.digest size
- 224, 256, 384, or 512 bits
- Cryptographic hash function.structure
- Merkle–Damgård construction with Davies–Meyer compression function
- Cryptographic hash function.rounds
- 64 or 80
- Cryptographic hash function.cryptanalysis
- A 2011 attack breaks preimage resistance for 57 out of 80 rounds of SHA-512, and 52 out of 64 rounds for SHA-256. Pseudo-collision attack against up to 46 rounds of SHA-256.
via Wikipedia infobox
Wikidata facts
- Subclass of
- technical standard
- Followed by
- SHA-3
- Follows
- SHA-1
Show 1 more fact
- inception
- 2002-00-00
Sources (3)
via Wikidata · CC0