de.flexiprovider.core.md
Class SHA224_256

java.lang.Object
  |
  +--java.security.MessageDigestSpi
        |
        +--de.flexiprovider.api.MessageDigest
              |
              +--de.flexiprovider.core.md.SHA224_256

Direct Known Subclasses:

SHA224, SHA256

public abstract class SHA224_256

extends MessageDigest

Super class for SHA-224 and SHA-256

Author:

Ralf-P. Weinmann

Constructor Summary

protected

SHA224_256(int digestLength) Constructor.

Method Summary

byte[]	digest() Complete the hash computation by performing final operations such as padding.
int	getDigestLength()
protected void	initMessageDigest(int[] initialState) Initialize the function with an initial state.
void	update(byte input) Update the digest using the specified input byte.
void	update(byte[] input, int inOff, int inLen) Update the digest using the specified input byte array.

Methods inherited from class de.flexiprovider.api.MessageDigest

digest, digest, engineDigest, engineGetDigestLength, engineReset, engineUpdate, engineUpdate, reset, update

Methods inherited from class java.security.MessageDigestSpi

clone, engineDigest

Methods inherited from class java.lang.Object

, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SHA224_256

protected SHA224_256(int digestLength)

Constructor.

Parameters:

digestLength - the digest length

Method Detail

initMessageDigest

protected void initMessageDigest(int[] initialState)

Initialize the function with an initial state.

Parameters:

initialState - the initial state

getDigestLength

public int getDigestLength()

Overrides:

getDigestLength in class MessageDigest

Returns:

the digest length in bytes

update

public void update(byte input)

Update the digest using the specified input byte.

Overrides:

update in class MessageDigest

Parameters:

input - the input byte

update

public void update(byte[] input,
                   int inOff,
                   int inLen)

Update the digest using the specified input byte array.

Overrides:

update in class MessageDigest

Parameters:

input - the input

inOff - the offset where the input starts

inLen - the input length

digest

public byte[] digest()

Complete the hash computation by performing final operations such as padding.

Overrides:

digest in class MessageDigest

Returns:

the digest value