net.handle.security.provider

Class GenericProvider

java.lang.Object

net.handle.security.HdlSecurityProvider

net.handle.security.provider.GenericProvider

public final class GenericProvider
extends HdlSecurityProvider

An implementation of the net.handle.HDLSecurityProvider interface that accesses the generic java security/crypto interfaces.

Field Summary

Fields inherited from class net.handle.security.HdlSecurityProvider

ENCRYPT_ALG_AES, ENCRYPT_ALG_DES, ENCRYPT_ALG_DESEDE

Constructor Summary

Constructors

Constructor and Description
GenericProvider()

Method Summary

Modifier and Type	Method and Description
java.security.KeyPair	generateDHKeyPair(java.math.BigInteger p, java.math.BigInteger g)
java.security.KeyPair	generateDHKeyPair(int keySize)
byte[]	generateSecretKey(int keyAlg) Generate and encode a secret key for use with the given algorithm
javax.crypto.Cipher	getCipher(int algorithm, byte[] secretKey, int direction, byte[] iv, int majorProtocolVersion, int minorProtocolVersion) Construct and return a Cipher object, initialized to either decrypt or encrypt using the given algorithm and secret key.
byte[]	getDESKeyFromDH(javax.crypto.interfaces.DHPublicKey pub, javax.crypto.interfaces.DHPrivateKey priv)
int	getIvSize(int algorithm, int majorProtocolVersion, int minorProtocolVersion) Returns the length in bytes of the initialization vector used by the cipher generated by getCipher().
byte[]	getKeyFromDH(javax.crypto.interfaces.DHPublicKey pub, javax.crypto.interfaces.DHPrivateKey priv, int algorithm) Using the given diffie-hellman key pair, generate the secret key with the algorithm ID (ENCRYPT_ALG_DES, ENCRYPT_ALG_AES or ENCRYPT_ALG_DESEDE) in the first four bytes of the array

Methods inherited from class net.handle.security.HdlSecurityProvider

getCipher, getInstance

Methods inherited from class java.lang.Object

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

Constructor Detail

GenericProvider

public GenericProvider()

Method Detail

getCipher

public javax.crypto.Cipher getCipher(int algorithm,
                                     byte[] secretKey,
                                     int direction,
                                     byte[] iv,
                                     int majorProtocolVersion,
                                     int minorProtocolVersion)
                              throws java.lang.Exception

Construct and return a Cipher object, initialized to either decrypt or encrypt using the given algorithm and secret key. The direction parameter must be either Cipher.ENCRYPT_MODE or Cipher.DECRYPT_MODE. The algorithm parameter should be one of the HdlSecurityProvider.ENCRYPT_ALG_* constants.

Specified by:

getCipher in class HdlSecurityProvider

Throws:

java.lang.Exception

getIvSize

public int getIvSize(int algorithm,
                     int majorProtocolVersion,
                     int minorProtocolVersion)

Description copied from class: HdlSecurityProvider

Returns the length in bytes of the initialization vector used by the cipher generated by getCipher(). Returns 0 if no initialization vector.

Specified by:

getIvSize in class HdlSecurityProvider

generateSecretKey

public byte[] generateSecretKey(int keyAlg)
                         throws java.lang.Exception

Generate and encode a secret key for use with the given algorithm

Specified by:

generateSecretKey in class HdlSecurityProvider

Throws:

java.lang.Exception

getDESKeyFromDH

public byte[] getDESKeyFromDH(javax.crypto.interfaces.DHPublicKey pub,
                              javax.crypto.interfaces.DHPrivateKey priv)
                       throws java.lang.Exception

Overrides:

getDESKeyFromDH in class HdlSecurityProvider

Throws:

java.lang.Exception

getKeyFromDH

public byte[] getKeyFromDH(javax.crypto.interfaces.DHPublicKey pub,
                           javax.crypto.interfaces.DHPrivateKey priv,
                           int algorithm)
                    throws java.lang.Exception

Using the given diffie-hellman key pair, generate the secret key with the algorithm ID (ENCRYPT_ALG_DES, ENCRYPT_ALG_AES or ENCRYPT_ALG_DESEDE) in the first four bytes of the array

Overrides:

getKeyFromDH in class HdlSecurityProvider

Throws:

java.lang.Exception

generateDHKeyPair

public java.security.KeyPair generateDHKeyPair(int keySize)
                                        throws java.lang.Exception

Overrides:

generateDHKeyPair in class HdlSecurityProvider

Throws:

java.lang.Exception

generateDHKeyPair

public java.security.KeyPair generateDHKeyPair(java.math.BigInteger p,
                                               java.math.BigInteger g)
                                        throws java.lang.Exception

Overrides:

generateDHKeyPair in class HdlSecurityProvider

Throws:

java.lang.Exception