org.bouncycastle.crypto.digests

Class SHA1Digest

public class SHA1Digest extends GeneralDigest

implementation of SHA-1 as outlined in "Handbook of Applied Cryptography", pages 346 - 349. It is interesting to ponder why the, apart from the extra IV, the other difference here from MD5 is the "endienness" of the word processing!
Constructor Summary
SHA1Digest()
Standard constructor
SHA1Digest(SHA1Digest t)
Copy constructor.
Method Summary
intdoFinal(byte[] out, int outOff)
StringgetAlgorithmName()
intgetDigestSize()
protected voidprocessBlock()
protected voidprocessLength(long bitLength)
protected voidprocessWord(byte[] in, int inOff)
voidreset()
reset the chaining variables

Constructor Detail

SHA1Digest

public SHA1Digest()
Standard constructor

SHA1Digest

public SHA1Digest(SHA1Digest t)
Copy constructor. This will copy the state of the provided message digest.

Method Detail

doFinal

public int doFinal(byte[] out, int outOff)

getAlgorithmName

public String getAlgorithmName()

getDigestSize

public int getDigestSize()

processBlock

protected void processBlock()

processLength

protected void processLength(long bitLength)

processWord

protected void processWord(byte[] in, int inOff)

reset

public void reset()
reset the chaining variables