SHA-2

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{{FormatInfo
 
{{FormatInfo
|subcat=Error detection and correction
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|subcat=Encryption
 
|released=2002
 
|released=2002
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|pronom={{PRONOM|fmt/991}}
 
}}
 
}}
== Overview ==
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'''SHA-2''' is a family of cryptographic hash functions.
'''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.
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=== SHA-256 sub-family ===
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== Details ==
* '''SHA-224''' (224-bit)
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As of 2012, SHA-2 has six defined-and-approved members, which can be classified into two sub-families.
* '''SHA-256''' (256-bit)
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=== SHA-512 sub-family ===
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* SHA-2 family
* '''SHA-512/224''' (224-bit)
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** SHA-256 sub-family
* '''SHA-512/256''' (256-bit)
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*** '''SHA-224''' (224-bit)
* '''SHA-384''' (384-bit)
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*** '''SHA-256''' (256-bit)
* '''SHA-512''' (512-bit)
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** SHA-512 sub-family
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*** '''SHA-512/224''' (224-bit)
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*** '''SHA-512/256''' (256-bit)
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*** '''SHA-384''' (384-bit)
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*** '''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.
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The specification also defines ''t''-bit hashes named SHA-512/''t'', for a wide range of values of ''t'', but it only approves the aforementioned SHA-512/224 and SHA-512/256 for use.
  
 
== Specifications ==
 
== Specifications ==
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== Software ==
 
== Software ==
* [http://www.openssl.org/ OpenSSL] (<code>openssl dgst [-sha224|-sha256|-sha384|-sha512]</code>)
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* [[OpenSSL]] (<code>openssl dgst [-sha224|-sha256|-sha384|-sha512]</code>)
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* [http://www.gnu.org/software/coreutils/ GNU coreutils] → [http://www.gnu.org/software/coreutils/manual/html_node/sha2-utilities.html sha224sum, sha256sum, sha384sum, sha512sum]
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== See also ==
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* [[SHA-1]] (predecessor)
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* [[SHA-3]] (successor)
  
 
== Links ==
 
== Links ==
 
* [[Wikipedia:SHA-2|Wikipedia article]]
 
* [[Wikipedia:SHA-2|Wikipedia article]]
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* [http://eprint.iacr.org/2010/548 SHA-512/256] - 2010 report by Gueron, Johnson, Walker
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* [http://hackaday.com/2014/12/19/nist-randomness-beacon/ Towards the Perfect Coin Flip: The NIST Randomness Beacon] (uses SHA512)
  
[[Category:Encryption]]
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[[Category:Error detection and correction]]

Latest revision as of 18:49, 25 March 2017

File Format
Name SHA-2
Ontology
PRONOM fmt/991
Released 2002

SHA-2 is a family of cryptographic hash functions.

Contents

[edit] Details

As of 2012, SHA-2 has six defined-and-approved members, which can be classified into two sub-families.

  • SHA-2 family
    • 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 specification also defines t-bit hashes named SHA-512/t, for a wide range of values of t, but it only approves the aforementioned SHA-512/224 and SHA-512/256 for use.

[edit] Specifications

[edit] Software

[edit] See also

[edit] Links

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