org.bouncycastle.crypto.params

Class DESParameters

public class DESParameters extends KeyParameter

Field Summary
static int	DES_KEY_LENGTH

Constructor Summary
	DESParameters(byte[] key)

Method Summary
static boolean	isWeakKey(byte[] key, int offset) DES has 16 weak keys.
static void	setOddParity(byte[] bytes) DES Keys use the LSB as the odd parity bit.

Field Detail

public static final int DES_KEY_LENGTH

public DESParameters(byte[] key)

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

DES has 16 weak keys. This method will check if the given DES key material is weak or semi-weak. Key material that is too short is regarded as weak.

See "Applied Cryptography" by Bruce Schneier for more information.

Returns: true if the given DES key material is weak or semi-weak, false otherwise.

public static void setOddParity(byte[] bytes)

DES Keys use the LSB as the odd parity bit. This can be used to check for corrupt keys.

Parameters: bytes the byte array to set the parity on.