Difference between revisions of "SHA-1"
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| − | '''SHA-1''' ('''S'''ecure '''H'''ash '''A'''lgorithm) is a cryptographic hash function that was first published in 1995 in FIPS PUB 180-1 by the NSA as a fix to an unknown flaw found in SHA-0. | + | '''SHA-1''' ('''S'''ecure '''H'''ash '''A'''lgorithm) is a cryptographic hash function that was first published in 1995 in FIPS PUB 180-1 by the National Security Agency (NSA) as a fix to an unknown flaw found in SHA-0. |
In February of 2005 an attack was announced that could find collisions in SHA-1 requiring fewer than 2<sup>69</sup> operations. | In February of 2005 an attack was announced that could find collisions in SHA-1 requiring fewer than 2<sup>69</sup> operations. | ||
Revision as of 11:27, 4 October 2009
SHA-1 (Secure Hash Algorithm) is a cryptographic hash function that was first published in 1995 in FIPS PUB 180-1 by the National Security Agency (NSA) as a fix to an unknown flaw found in SHA-0.
In February of 2005 an attack was announced that could find collisions in SHA-1 requiring fewer than 269 operations.
Tools
On most Unix systems the tool sha1sum can be used to compute the SHA-1 hash of a file or devices.
