gnu.crypto.hash
public class Sha160 extends BaseHash
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:
Version: $Revision: 1.10 $
Constructor Summary | |
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Sha160() Trivial 0-arguments constructor. |
Method Summary | |
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Object | clone() |
protected byte[] | getResult() |
static int[] | G(int hh0, int hh1, int hh2, int hh3, int hh4, byte[] in, int offset) |
protected byte[] | padBuffer() |
protected void | resetContext() |
boolean | selfTest() |
protected void | transform(byte[] in, int offset) |