SHA: Difference between revisions
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SHA-0 (Secure Hash Algorithm) was a proposal by the U.S. government that was replaced by SHA-1 in FIPS 180-1. SHA-1 addresses the weakness found in SHA-0 by adding an additional circular shift operation. SHA-1 has [http://theory.csail.mit.edu/~yiqun/shanote.pdf a reported weakness] as far as [[hash collision]]s are concerned and awareness should be raised if you are implementing it. | SHA-0 (Secure Hash Algorithm) was a proposal by the U.S. government that was replaced by SHA-1 in FIPS 180-1. SHA-1 addresses the weakness found in SHA-0 by adding an additional circular shift operation. SHA-1 has [http://theory.csail.mit.edu/~yiqun/shanote.pdf a reported weakness] as far as [[hash collision]]s are concerned and awareness should be raised if you are implementing it. | ||
In [[OpenBSD]] you can make use of the sha1 command like so: | |||
$ sha1 /etc/passwd | |||
SHA1 (/etc/passwd) = c7ae5b7306797d9f1f5fba85683cdd36ba8d1a08 | |||
Revision as of 02:32, 27 October 2005
SHA-0 (Secure Hash Algorithm) was a proposal by the U.S. government that was replaced by SHA-1 in FIPS 180-1. SHA-1 addresses the weakness found in SHA-0 by adding an additional circular shift operation. SHA-1 has a reported weakness as far as hash collisions are concerned and awareness should be raised if you are implementing it.
In OpenBSD you can make use of the sha1 command like so:
$ sha1 /etc/passwd SHA1 (/etc/passwd) = c7ae5b7306797d9f1f5fba85683cdd36ba8d1a08
