Subject: Comparison od SHA fucntions
Author: X509
In response to: SHA-0 and SHA-1 should be retired
Posted on: 07/07/2010 02:40:51 PM
Algorithm + Output size + Internal state size + Block size + Max message size + Word size
(bits) (bits) (bits) (bits) (bits)
SHA-0 160 160 512 2^64 − 1 32
SHA-1 160 160 512 2^64 − 1 32
SHA-2:
SHA-224 224 256 512 2^64 − 1 32
SHA-256 256 256 512 2^64 − 1 32
SHA-384 384 512 1024 2^128 − 1 64
SHA-512 512 512 1024 2^128 − 1 64
>
> On 07/07/2010 02:29:19 PM
X509 wrote:
SHA-1 is very similar to SHA-0, but corrects an error in the original SHA hash specification that led to significant weaknesses. The SHA-0 algorithm was not adopted by many applications.
A successful attack on SHA-1 was reported in 2005 and for this reason SHA-1 should be kicked out of govenment use. "Federal agencies should stop using SHA-1 for...applications that require collision resistance as soon as practical, and must use the SHA-2 family of hash functions for these applications after 2010" -- NIST.gov
References:
