- published: 27 Jan 2013
- views: 26795
In cryptography, SHA-1 is a cryptographic hash function designed by the United States National Security Agency and published by the United States NIST as a U.S. Federal Information Processing Standard. SHA stands for "secure hash algorithm". The three SHA algorithms are structured differently and are distinguished as SHA-0, SHA-1, and SHA-2. 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. SHA-2 on the other hand significantly differs from the SHA-1 hash function.
SHA-1 is the most widely used of the existing SHA hash functions, and is employed in several widely used applications and protocols. In 2005, security flaws were identified in SHA-1, namely that a mathematical weakness might exist, indicating that a stronger hash function would be desirable. Although no successful attacks have yet been reported on the SHA-2 variants, they are algorithmically similar to SHA-1 and so efforts are underway to develop improved alternatives. A new hash standard, SHA-3, is currently under development — an ongoing NIST hash function competition is scheduled to end with the selection of a winning function in 2012.
Watching the sequence of sounds
Coming out of your mouth
But the snore is too loud
Follow the hands as they move
Try to make out your move
But my brain doesn't want to
Silent call for you
What have I done to you
Kill and run, kill and run
I'm one of the dirty guns
Kill and run, kill and run
A bullet through your heart
Interpret the eyes as they die
Should i cry should I love
Your poor lashes blow
Victim of sensory love
You cry over my
An innocent call
Silent call for you
What have I done to you
Kill and run, kill and run
I'm one of the dirty guns
Kill and run, kill and run
A bullet through your heart
Kill and run, kill and run
I'm one of the dirty guns
Kill and run, kill and run