ewe.security
Class SHA1

java.lang.Object
  ewe.security.SHA1

public class SHA1

extends Object

SHA-1 message digest implementation, translated from C source code (the origin is unknown) - by Markus Hahn

Field Summary

static int

DIGEST_SIZE size of a SHA-1 digest in octets

Constructor Summary

SHA1()
Default constructor.

Method Summary

void	clear() Clears all data, use reset() to start again.
void	digest() Completes the digest operation.
byte[]	digest(byte[] source)
byte[]	digest(byte[] source, int offset, int length)
boolean	equals(byte[] otherDigest)
boolean	equals(byte[] otherDigest, int offset, int length)
byte[]	getDigest() Retrieves the digest.
int	getDigest(byte[] buf, int nOfs) Retrieves the digest into an existing buffer.
void	reset() Initializes (or resets) the hasher for a new session.
String	toString() makes a binhex string representation of the current digest
void	update(byte bB) Adds a single byte to the digest.
void	update(byte[] data) Deprecated. use update(byte[], int, int) instead
void	update(byte[] data, int nOfs, int nLen) Adds a portion of a byte array to the digest.
void	update(String sData) Deprecated. don't use this method anymore (it's not clean), you might want to try update(sData.getBytes()) instead

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode

Field Detail

DIGEST_SIZE

public static final int DIGEST_SIZE

size of a SHA-1 digest in octets

See Also:

Constant Field Values

Constructor Detail

SHA1

public SHA1()

Default constructor.

Method Detail

clear

public void clear()

Clears all data, use reset() to start again.

reset

public void reset()

Initializes (or resets) the hasher for a new session.

update

public void update(byte bB)

Adds a single byte to the digest.

Parameters:

bB - the byte to add

update

public void update(byte[] data)

Deprecated. use update(byte[], int, int) instead

Adds a byte array to the digest.

Parameters:

data - the data to add

update

public void update(byte[] data,
                   int nOfs,
                   int nLen)

Adds a portion of a byte array to the digest.

Parameters:

data - the data to add

nOfs - the offset of the bytes in the data array.

nLen - the number of bytes to add.

update

public void update(String sData)

Deprecated. don't use this method anymore (it's not clean), you might want to try update(sData.getBytes()) instead

Adds an ASCII string (8bit) to the digest.

Parameters:

sData - the string to add

digest

public byte[] digest(byte[] source,
                     int offset,
                     int length)

digest

public byte[] digest(byte[] source)

digest

public void digest()

Completes the digest operation. You can now fetch the digest using getDigest().

getDigest

public byte[] getDigest()

Retrieves the digest.

Returns:

the digset bytes as an array in DIGEST_SIZE bytes.

equals

public boolean equals(byte[] otherDigest,
                      int offset,
                      int length)

equals

public boolean equals(byte[] otherDigest)

getDigest

public int getDigest(byte[] buf,
                     int nOfs)

Retrieves the digest into an existing buffer.

Parameters:

buf - buffer to store the digst into

nOfs - where to write to

Returns:

number of bytes written

toString

public String toString()

makes a binhex string representation of the current digest

Overrides:

toString in class Object

Returns:

the string representation