gnu.crypto.hash
Class Sha160
- Cloneable, IMessageDigest
The Secure Hash Algorithm (SHA-1) is required for use with the Digital
Signature Algorithm (DSA) as specified in the Digital Signature Standard
(DSS) and whenever a secure hash algorithm is required for federal
applications. For a message of length less than 2^64 bits, the SHA-1
produces a 160-bit condensed representation of the message called a message
digest. The message digest is used during generation of a signature for the
message. The SHA-1 is also used to compute a message digest for the received
version of the message during the process of verifying the signature. Any
change to the message in transit will, with very high probability, result in
a different message digest, and the signature will fail to verify.
The SHA-1 is designed to have the following properties: it is
computationally infeasible to find a message which corresponds to a given
message digest, or to find two different messages which produce the same
message digest.
References:
- SECURE HASH
STANDARD
Federal Information, Processing Standards Publication 180-1, 1995 April 17.
Version:
Sha160() - Trivial 0-arguments constructor.
|
blockSize , clone , digest , getResult , hashSize , name , padBuffer , reset , resetContext , selfTest , transform , update , update |
Sha160
public Sha160()
Trivial 0-arguments constructor.
G
public static final int[] G(int hh0,
int hh1,
int hh2,
int hh3,
int hh4,
byte[] in,
int offset)
getResult
protected byte[] getResult()
- getResult in interface BaseHash
padBuffer
protected byte[] padBuffer()
- padBuffer in interface BaseHash
resetContext
protected void resetContext()
- resetContext in interface BaseHash
transform
protected void transform(byte[] in,
int offset)
- transform in interface BaseHash
Copyright © 2001, 2002, 2003
Free Software Foundation,
Inc. All Rights Reserved.