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FIPS Publication 180: Secure Hash Standard (SHS). May 1993.]. SHA-1 [National Institute of Standards and Technology (NIST). Announcement of Weakness in the Secure Hash Standard. May 1994.] was a revision to SHA that was published in 1994. The revision corrected an unpublished flaw in SHA.
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www.w3.org/PICS/DSig/SHA1_1_0.html
www.w3.org/PICS/DSig/SHA1_1_0.html
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HMAC - Wikipedia, the free encyclopedia
In cryptography, a keyed-Hash Message Authentication Code ( HMAC or KHMAC ), is a type of message authentication code (MAC) calculated using a specific algorithm involving a cryptographic hash f...
en.wikipedia.org/wiki/HMAC
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Explanation: This Standard specifies a Secure Hash Algorithm, SHA-1, for computing a condensed representation of a message or a data file. When a message of any length < 264 bits is input, the SHA-1 produces a 160-bit output called a message digest.
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www.itl.nist.gov/fipspubs/fip180-1.htm
www.itl.nist.gov/fipspubs/fip180-1.htm
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SHA-1 has been broken. Not a reduced-round version. Not a simplified version. The real thing. ... collisions in the the full SHA-1 in 2**69 hash operations, much less than the brute-force attack of 2**80 operations based on the hash length.
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www.schneier.com/blog/archives/2005/02/sha1_broken.html
www.schneier.com/blog/archives/2005/02/sha1_broken.html
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On Tuesday, I blogged about a new cryptanalytic result -- the first attack faster than brute-force against SHA-1. I wrote about SHA, and the need to replace it, last September. Aside from the details of the new attack, everything I said then still stands.
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www.schneier.com/blog/archives/2005/02/cryptanalysis_o....
www.schneier.com/blog/archives/2005/02/cryptanalysis_o.html
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MD5, SHA-1, HMAC and more - secure hash algorithm information, cryptography resources and API's ... For instance when you download or receive a file, you can use MD5 or SHA-1 to guarantee that you have the correct, unaltered file by comparing its hash with the original. You are essentially verifying the file's integrity.
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www.secure-hash-algorithm-md5-sha-1.co.uk/
www.secure-hash-algorithm-md5-sha-1.co.uk/
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User of the day ... Bradley; Although I currently reside in a suburb of St Paul, MN I am not from around here originally and it sometimes becomes apparent in conversation. br.. ... About SHA-1 Collision Search Graz...
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boinc.iaik.tugraz.at/sha1_coll_search/
boinc.iaik.tugraz.at/sha1_coll_search/
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SHA-1 and ASCII ... Engineyard posted a programming contest on July 14, 2009. The task was to find a phrase whose SHA-1 hash has minimal Hamming distance from the SHA-1 hash of a target phrase. ... SHA-1 is a hash function that operates on blocks of 64 bytes at a time. The output of hashing the first block is used...
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www.win.tue.nl/cccc/sha-1-challenge.html
www.win.tue.nl/cccc/sha-1-challenge.html
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Calculates the sha1 hash of str using the » US Secure Hash Algorithm 1. ... Problems: 1. In most solutions with hash and salt, you were bound to have one extra row in your database that would state, preferably random, salt for that hashed data.
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php.net/manual/en/function.sha1.php
php.net/manual/en/function.sha1.php
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