SHA-2
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== Overview == | == Overview == | ||
| − | '''SHA-2''' is a family of cryptographic hash functions. As of 2012, it has six defined members, which | + | '''SHA-2''' is a family of cryptographic hash functions. As of 2012, it has six defined members, which can be classified into two sub-families. |
=== SHA-256 sub-family === | === SHA-256 sub-family === | ||
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* '''SHA-384''' (384-bit) | * '''SHA-384''' (384-bit) | ||
* '''SHA-512''' (512-bit) | * '''SHA-512''' (512-bit) | ||
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| + | The specifications also defines ''t''-bit hashes named SHA-512/''t'', for a wide range of values of ''t'', but it only approves SHA-512/224 and SHA-512/256 for use. | ||
== Specifications == | == Specifications == | ||
Revision as of 17:11, 22 April 2013
Contents |
Overview
SHA-2 is a family of cryptographic hash functions. As of 2012, it has six defined members, which can be classified into two sub-families.
SHA-256 sub-family
- SHA-224 (224-bit)
- SHA-256 (256-bit)
SHA-512 sub-family
- SHA-512/224 (224-bit)
- SHA-512/256 (256-bit)
- SHA-384 (384-bit)
- SHA-512 (512-bit)
The specifications also defines t-bit hashes named SHA-512/t, for a wide range of values of t, but it only approves SHA-512/224 and SHA-512/256 for use.
Specifications
- FIPS PUB 180-2 (1 Aug. 2002): SHA-256, SHA-384, SHA-512
- FIPS PUB 180-3 (Oct. 2008): Adds SHA-224
- FIPS PUB 180-4 (Mar. 2012): Adds SHA-512/224, SHA-512/256
Software
- OpenSSL (
openssl dgst [-sha224|-sha256|-sha384|-sha512])
