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java.lang.Object org.apache.geronimo.util.crypto.digests.GeneralDigest org.apache.geronimo.util.crypto.digests.SHA1Digest
public class SHA1Digest
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 | |
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SHA1Digest()
Standard constructor |
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SHA1Digest(SHA1Digest t)
Copy constructor. |
Method Summary | |
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int |
doFinal(byte[] out,
int outOff)
close the digest, producing the final digest value. |
String |
getAlgorithmName()
return the algorithm name |
int |
getDigestSize()
return the size, in bytes, of the digest produced by this message digest. |
protected void |
processBlock()
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protected void |
processLength(long bitLength)
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protected void |
processWord(byte[] in,
int inOff)
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void |
reset()
reset the chaining variables |
Methods inherited from class org.apache.geronimo.util.crypto.digests.GeneralDigest |
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finish, getByteLength, update, update |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public SHA1Digest()
public SHA1Digest(SHA1Digest t)
Method Detail |
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public String getAlgorithmName()
Digest
public int getDigestSize()
Digest
protected void processWord(byte[] in, int inOff)
processWord
in class GeneralDigest
protected void processLength(long bitLength)
processLength
in class GeneralDigest
public int doFinal(byte[] out, int outOff)
Digest
out
- the array the digest is to be copied into.outOff
- the offset into the out array the digest is to start at.public void reset()
reset
in interface Digest
reset
in class GeneralDigest
protected void processBlock()
processBlock
in class GeneralDigest
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