iaik.me.security
Class PBE

java.lang.Object
  |
  +--iaik.me.security.PBE

public class PBE

extends Object

Password based encryption and MAC functionality.

Field Summary

static int	IV_PASSWORD_BASED
static int	IV_RANDOM
static int	KDF_PKCS12
static int	KDF_PKCS5V1
static int	KDF_PKCS5V2
static String	OID_PKCS12_DES_EDE_168_SHA
static String	OID_PKCS12_RC2_40_SHA
static String	OID_PKCS5_PBES2
static String	OID_PKCS5V1_DES_MD5

Method Summary

ASN1	getASN1()
static Cipher	getCipher(ASN1 algId, char[] password)
Cipher	getCipher(int mode, char[] password, byte[] salt, int iterationCount, SecureRandom random) Returns the corresponding PBE cipher.
static PBE	getInstance(String oid)
static PBE	getInstance(String algorithm, int kdf, int keyLength, int ivLength, byte[] iv) Returns a PBE cipher. if algorithm is null, the Triples DES cipher will be used.
int	getIterationCount()
static Mac	getMac(ASN1 algId, char[] password)
Mac	getMac(char[] password, byte[] salt, int iterationCount, SecureRandom random)
byte[]	getSalt() Returns the salt the was used for the last key derivation operation.

Methods inherited from class java.lang.Object

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

Field Detail

OID_PKCS12_DES_EDE_168_SHA

public static final String OID_PKCS12_DES_EDE_168_SHA

OID_PKCS12_RC2_40_SHA

public static final String OID_PKCS12_RC2_40_SHA

OID_PKCS5V1_DES_MD5

public static final String OID_PKCS5V1_DES_MD5

OID_PKCS5_PBES2

public static final String OID_PKCS5_PBES2

KDF_PKCS5V1

public static final int KDF_PKCS5V1

KDF_PKCS5V2

public static final int KDF_PKCS5V2

KDF_PKCS12

public static final int KDF_PKCS12

IV_PASSWORD_BASED

public static final int IV_PASSWORD_BASED

IV_RANDOM

public static final int IV_RANDOM

Method Detail

getCipher

public Cipher getCipher(int mode,
                        char[] password,
                        byte[] salt,
                        int iterationCount,
                        SecureRandom random)
                 throws CryptoException

Returns the corresponding PBE cipher.

Parameters:

mode -

password -

salt -

iterationCount -

random -

Returns:

Throws:

CryptoException -

getMac

public Mac getMac(char[] password,
                  byte[] salt,
                  int iterationCount,
                  SecureRandom random)
           throws CryptoException

getSalt

public byte[] getSalt()

Returns the salt the was used for the last key derivation operation. If no salt was specified prior to invoking the getCipher(int, char[], byte[], int, iaik.me.security.SecureRandom) or getMac(char[], byte[], int, iaik.me.security.SecureRandom) method, the salt is chosen randomly.

Returns:

array of bytes containing the salt value

getIterationCount

public int getIterationCount()

getASN1

public ASN1 getASN1()
             throws CryptoException

getInstance

public static PBE getInstance(String oid)
                       throws CryptoException

getInstance

public static PBE getInstance(String algorithm,
                              int kdf,
                              int keyLength,
                              int ivLength,
                              byte[] iv)

Returns a PBE cipher. if algorithm is null, the Triples DES cipher will be used.

Parameters:

algorithm -

kdf - defines which derivation function to use,

keyLength -

ivLength -

iv - IV for the cipher

Returns:

an initializes PBE cipher

getCipher

public static Cipher getCipher(ASN1 algId,
                               char[] password)
                        throws CryptoException,
                               IOException

getMac

public static Mac getMac(ASN1 algId,
                         char[] password)
                  throws CryptoException,
                         IOException