org.logi.crypto.keys
Class SymmetricKey

java.lang.Object
  org.logi.crypto.Crypto
      org.logi.crypto.keys.K
          org.logi.crypto.keys.SymmetricKey

All Implemented Interfaces:

Key

Direct Known Subclasses:

BlowfishKey, CaesarKey, DESKey, TriDESKey

public abstract class SymmetricKey

extends K

This abstract class implements some (more) of the methods from the Key interface.

See Also:

KeyPair, KeyRing

Field Summary

Fields inherited from class org.logi.crypto.keys.K

fingerprint, otherFingerprint

Fields inherited from class org.logi.crypto.Crypto

BIT, cdsPath, EMPTY_ARRAY, FOUR, keySource, NIBBLE, ONE, primeCertainty, random, TWO, ZERO

Constructor Summary

SymmetricKey()

Method Summary

protected Fingerprint	calcFingerprint(boolean other, java.lang.String algorithm) Calculate the fingerprint for this key using the named hash function.
boolean	isPrivate() Returns true iff this is a private key.
boolean	matches(Key key) Returns true if this and key are the same symmetric key.

Methods inherited from class org.logi.crypto.keys.K

getFingerprint, getFingerprint, hashCode, matchFingerprint, matchFingerprint

Methods inherited from class org.logi.crypto.Crypto

binString, binString, equal, equalRelaxed, equalSub, fromHexNibble, fromHexString, fromString, fromString, hexString, hexString, hexString, hexString, hexString, initRandom, initRandom, makeClass, makeInt, makeLong, makeSessionKey, pastSpace, pickBits, pickBits, readBlock, readInt, writeBytes, writeBytes, writeInt

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.logi.crypto.keys.Key

getAlgorithm, getSize

Constructor Detail

SymmetricKey

public SymmetricKey()

Method Detail

calcFingerprint

protected Fingerprint calcFingerprint(boolean other,
                                      java.lang.String algorithm)
                               throws InvalidCDSException

Calculate the fingerprint for this key using the named hash function. The default behaviour is to return the fingerprint of the CDS for this key.

Specified by:

calcFingerprint in class K

Throws:

InvalidCDSException

isPrivate

public boolean isPrivate()

Returns true iff this is a private key.

Symmetric keys simply return true.

matches

public boolean matches(Key key)

Returns true if this and key are the same symmetric key.

Symmetric keys simply call equals(key).