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Class javax.crypto.spec.DESedeKeySpec

java.lang.Object
   |
   +----javax.crypto.spec.DESedeKeySpec

public class DESedeKeySpec
extends Object
implements KeySpec
This class specifies a DES-EDE ("triple-DES") key.

See Also:
Key, KeyFactory, KeySpec

Constructor Index

 o DESedeKeySpec(byte[])
Uses the first 24 bytes in key as the DES-EDE key
 o DESedeKeySpec(byte[], int)
Uses the first 24 bytes in key, beginning at offset, as the DES-EDE key

Method Index

 o getKey()
Returns the DES-EDE key.
 o isParityAdjusted(byte[], int)
Checks if the given DES-EDE key, starting at offset, is parity-adjusted.

Constructors

 o DESedeKeySpec
 public DESedeKeySpec(byte key[]) throws InvalidKeyException
Uses the first 24 bytes in key as the DES-EDE key

Parameters:
key - the buffer with the DES-EDE key
Throws: InvalidKeyException
if the given key material is shorter than 24 bytes
 o DESedeKeySpec
 public DESedeKeySpec(byte key[],
                      int offset) throws InvalidKeyException
Uses the first 24 bytes in key, beginning at offset, as the DES-EDE key

Parameters:
key - the buffer with the DES-EDE key
offset - the offset in key, where the DES-EDE key starts
Throws: InvalidKeyException
if the given key material, starting at offset, is shorter than 24 bytes

Methods

 o getKey
 public byte[] getKey()
Returns the DES-EDE key.

Returns:
the DES-EDE key
 o isParityAdjusted
 public static boolean isParityAdjusted(byte key[],
                                        int offset) throws InvalidKeyException
Checks if the given DES-EDE key, starting at offset, is parity-adjusted.

Returns:
true if the given DES-EDE key is parity-adjusted, false otherwise
Throws: InvalidKeyException
if the given key material, starting at offset, is shorter than 24 bytes

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