Dr4k3 Posted November 24, 2006 Report Posted November 24, 2006 What is SHA-1?What is SHA-1?SHA-1 (Secure Hash Algorithm) is a most commonly used from SHA series of cryptographic hash functions, designed by the National Security Agency of USA and published as their government standard.SHA-1 produce the 160-bit hash value. Original SHA (or SHA-0) also produce 160-bit hash value, but SHA-0 has been withdrawn by the NSA shortly after publication and was superseded by the revised version commonly referred to as SHA-1. The other functions of SHA series produce 224-, 256-, 384- and 512-bit hash values.History of SHA series.SHA-0 published in 1993 as the Secure Hash Standard, FIPS PUB 180 by National Institute of Standards and Technology.SHA-1 published in 1995 in FIPS PUB 180-1.SHA-256, SHA-384 and SHA-512 first published in 2001 as draft FIPS PUB 180-2 and released as official standard in 2002.SHA-224 published in 2004 as change notice for FIPS PUB 180-2. Quote
