org.spongycastle.crypto.params

Class DESedeParameters

java.lang.Object

org.spongycastle.crypto.params.KeyParameter

org.spongycastle.crypto.params.DESParameters

org.spongycastle.crypto.params.DESedeParameters

All Implemented Interfaces:

CipherParameters

public class DESedeParameters
extends DESParameters

Field Summary

Fields

Modifier and Type	Field and Description
static int	DES_EDE_KEY_LENGTH

Fields inherited from class org.spongycastle.crypto.params.DESParameters

DES_KEY_LENGTH

Constructor Summary

Constructors

Constructor and Description
DESedeParameters(byte[] key)

Method Summary

Modifier and Type	Method and Description
static boolean	isReal2Key(byte[] key, int offset) return true if the passed in key is a real 2 part DES-EDE key.
static boolean	isReal3Key(byte[] key, int offset) return true if the passed in key is a real 3 part DES-EDE key.
static boolean	isRealEDEKey(byte[] key, int offset) return true if the passed in key is a real 2/3 part DES-EDE key.
static boolean	isWeakKey(byte[] key, int offset) return true if the passed in key is a DES-EDE weak key.
static boolean	isWeakKey(byte[] key, int offset, int length) return true if the passed in key is a DES-EDE weak key.

Methods inherited from class org.spongycastle.crypto.params.DESParameters

setOddParity

Methods inherited from class org.spongycastle.crypto.params.KeyParameter

getKey

Methods inherited from class java.lang.Object

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

Field Detail

DES_EDE_KEY_LENGTH

public static final int DES_EDE_KEY_LENGTH

See Also:

Constant Field Values

Constructor Detail

DESedeParameters

public DESedeParameters(byte[] key)

Method Detail

isWeakKey

public static boolean isWeakKey(byte[] key,
                                int offset,
                                int length)

return true if the passed in key is a DES-EDE weak key.

Parameters:

key - bytes making up the key

offset - offset into the byte array the key starts at

length - number of bytes making up the key

isWeakKey

public static boolean isWeakKey(byte[] key,
                                int offset)

return true if the passed in key is a DES-EDE weak key.

Parameters:

key - bytes making up the key

offset - offset into the byte array the key starts at

isRealEDEKey

public static boolean isRealEDEKey(byte[] key,
                                   int offset)

return true if the passed in key is a real 2/3 part DES-EDE key.

Parameters:

key - bytes making up the key

offset - offset into the byte array the key starts at

isReal2Key

public static boolean isReal2Key(byte[] key,
                                 int offset)

return true if the passed in key is a real 2 part DES-EDE key.

Parameters:

key - bytes making up the key

offset - offset into the byte array the key starts at

isReal3Key

public static boolean isReal3Key(byte[] key,
                                 int offset)

return true if the passed in key is a real 3 part DES-EDE key.

Parameters:

key - bytes making up the key

offset - offset into the byte array the key starts at