iaik.security.cipher

Class PBEKey

java.lang.Object

iaik.security.cipher.PBEKey

All Implemented Interfaces:

java.io.Serializable, java.security.Key, javax.crypto.SecretKey, javax.security.auth.Destroyable

public class PBEKey
extends java.lang.Object
implements javax.crypto.SecretKey

A secret key for PBE (Password Based Encryption).

Password based encryption as defined in PKCS #5: Password-Based Cryptography Specification Version 2.0 (RFC 2898) encrypts the given message with the DES algorithm in CBC mode using a secret key which is derived from a password with the MD2 or MD5 message digest algorithm. PKCS#5 recommends, that the password should consist of printable ASCII characters.

This class returns the password as a byte array of the default ASCII encoding.

E.g.: "Beavis" gives the following string of 6 bytes:

0x42 0x65 0x61 0x76 0x69 0x73

You can also use the "PKCS#5" SecretKeyFactory for converting a password to a PBEKeyBMP.

See Also:

SecretKey, SecretKey, PBEKeyBMP, PbeWithMD5AndDES_CBC, Serialized Form

Field Summary

Fields inherited from interface javax.crypto.SecretKey

serialVersionUID

Constructor Summary

Constructors

Constructor and Description
PBEKey(char[] password) Creates a new PBEKey from a char array.
PBEKey(javax.crypto.spec.PBEKeySpec keySpec) Creates a new PBEKey from a PBEKeySpec.
PBEKey(SecureStringBuffer password)
PBEKey(java.lang.String password) Creates a new PBEKey from a String.

Method Summary

Modifier and Type	Method and Description
java.lang.String	getAlgorithm() Returns the algorithm name.
byte[]	getEncoded() Returns the password as byte array.
java.lang.String	getFormat() Returns the format name.
char[]	getKey() Returns the password as char array.

Methods inherited from class java.lang.Object

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

Methods inherited from interface javax.security.auth.Destroyable

destroy, isDestroyed

Constructor Detail

PBEKey

public PBEKey(java.lang.String password)

Creates a new PBEKey from a String.

Parameters:

password - the password as a String

PBEKey

public PBEKey(javax.crypto.spec.PBEKeySpec keySpec)

Creates a new PBEKey from a PBEKeySpec.

Parameters:

keySpec - the password as KeySpec

PBEKey

public PBEKey(char[] password)

Creates a new PBEKey from a char array.

Parameters:

password - the password as a char array

PBEKey

public PBEKey(SecureStringBuffer password)

Method Detail

getEncoded

public byte[] getEncoded()

Returns the password as byte array.

Specified by:

getEncoded in interface java.security.Key

Returns:

the password as byte array

getKey

public char[] getKey()

Returns the password as char array.

Returns:

the password as char array

getAlgorithm

public java.lang.String getAlgorithm()

Returns the algorithm name.

Specified by:

getAlgorithm in interface java.security.Key

Returns:

"PBE"

getFormat

public java.lang.String getFormat()

Returns the format name.

Specified by:

getFormat in interface java.security.Key

Returns:

"RAW"