de.flexiprovider.core.md
Class SHA1

java.lang.Object
  |
  +--java.security.MessageDigestSpi
        |
        +--de.flexiprovider.api.MessageDigest
              |
              +--de.flexiprovider.core.md.SHA1

public final class SHA1

extends MessageDigest

SHA1 extends java.security.MessageDigestSpi A class that implements the NIST Secure Hash Algorithm - version 1. The Algorithm was implemented according to Standard FIPS PUB 180-1.

Author:

Torsten Ehli, Sylvain Franke, Ralf-Philipp Weinmann

Field Summary

static java.lang.String	ALG_NAME The algorithm name.
static java.lang.String	ALG_NAME2 An alternative algorithm name.
static java.lang.String	OID The OID of SHA1 (defined by IEEE P1363).

Constructor Summary

SHA1()
Constructor.

Method Summary

byte[]	digest() Completes the hash computation by performing final operations such as padding.
int	getDigestLength() Returns the digest length in bytes.
void	reset() Resets the digest for further use.
void	update(byte input) Updates the digest using the specified byte.
void	update(byte[] input, int offset, int len) Updates the digest using the specified array of bytes, starting at the specified offset.

Methods inherited from class de.flexiprovider.api.MessageDigest

digest, digest, engineDigest, engineGetDigestLength, engineReset, engineUpdate, engineUpdate, 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

Field Detail

ALG_NAME

public static final java.lang.String ALG_NAME

The algorithm name.

ALG_NAME2

public static final java.lang.String ALG_NAME2

An alternative algorithm name.

OID

public static final java.lang.String OID

The OID of SHA1 (defined by IEEE P1363).

Constructor Detail

SHA1

public SHA1()

Constructor. Create and initialize the arrays needed for computing the digest.

Method Detail

digest

public byte[] digest()

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

Overrides:

digest in class MessageDigest

Returns:

the digest value

getDigestLength

public int getDigestLength()

Returns the digest length in bytes.

Overrides:

getDigestLength in class MessageDigest

Returns:

the digest length in bytes.

reset

public void reset()

Resets the digest for further use.

Overrides:

reset in class MessageDigest

update

public void update(byte[] input,
                   int offset,
                   int len)

Updates the digest using the specified array of bytes, starting at the specified offset.

Overrides:

update in class MessageDigest

Parameters:

input - - the byte[] to use for the update.

offset - - the offset to start from in the array of bytes.

len - - the number of bytes to use, starting at offset.

update

public void update(byte input)

Updates the digest using the specified byte.

Overrides:

update in class MessageDigest

Parameters:

input - - the byte to use for the update.