org.apache.derby.impl.services.jce
Class JCECipherProvider
java.lang.Object
org.apache.derby.impl.services.jce.JCECipherProvider
- All Implemented Interfaces:
- CipherProvider
class JCECipherProvider
- extends java.lang.Object
- implements CipherProvider
This is a wrapper for a Cipher
- See Also:
CipherFactory
Constructor Summary |
JCECipherProvider(int mode,
javax.crypto.SecretKey secretKey,
byte[] iv,
java.lang.String algorithm,
java.lang.String provider)
|
Method Summary |
int |
decrypt(byte[] ciphertext,
int offset,
int length,
byte[] cleartext,
int outputOffset)
Decrypt data - use only with Cipher that has been initialized with
CipherFactory.DECRYPT. |
int |
encrypt(byte[] cleartext,
int offset,
int length,
byte[] ciphertext,
int outputOffset)
Encrypt data - use only with Cipher that has been initialized with
CipherFactory.ENCRYPT. |
int |
getEncryptionBlockSize()
Returns the encryption block size used during creation of the encrypted database |
(package private) boolean |
verifyIV(byte[] IV)
|
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
cipher
private javax.crypto.Cipher cipher
mode
private int mode
ivUsed
private boolean ivUsed
ivspec
private final javax.crypto.spec.IvParameterSpec ivspec
encryptionBlockSize
private final int encryptionBlockSize
sunjce
private boolean sunjce
cryptixKey
private javax.crypto.SecretKey cryptixKey
JCECipherProvider
JCECipherProvider(int mode,
javax.crypto.SecretKey secretKey,
byte[] iv,
java.lang.String algorithm,
java.lang.String provider)
throws StandardException
- Throws:
StandardException
encrypt
public int encrypt(byte[] cleartext,
int offset,
int length,
byte[] ciphertext,
int outputOffset)
throws StandardException
- Description copied from interface:
CipherProvider
- Encrypt data - use only with Cipher that has been initialized with
CipherFactory.ENCRYPT.
- Specified by:
encrypt
in interface CipherProvider
- Parameters:
cleartext
- the byte array containing the cleartextoffset
- encrypt from this byte offset in the cleartextlength
- encrypt this many bytes starting from offsetciphertext
- the byte array to store the ciphertextoutputOffset
- the offset into the ciphertext array the output
should go
If cleartext and ciphertext are the same array, caller must be careful
to not overwrite the cleartext before it is scrambled.
- Returns:
- The number of bytes stored in ciphertext.
- Throws:
StandardException
- Standard Derby Error Policy- See Also:
CipherProvider.encrypt(byte[], int, int, byte[], int)
decrypt
public int decrypt(byte[] ciphertext,
int offset,
int length,
byte[] cleartext,
int outputOffset)
throws StandardException
- Description copied from interface:
CipherProvider
- Decrypt data - use only with Cipher that has been initialized with
CipherFactory.DECRYPT.
- Specified by:
decrypt
in interface CipherProvider
- Parameters:
ciphertext
- the byte array containing the ciphertextoffset
- decrypt from this byte offset in the ciphertextlength
- decrypt this many bytes starting from offsetcleartext
- the byte array to store the cleartextoutputOffset
- the offset into the cleartext array the output
should go
If cleartext and ciphertext are the same array, caller must be careful
to not overwrite the ciphertext before it is un-scrambled.
- Returns:
- The number of bytes stored in cleartext.
- Throws:
StandardException
- Standard Derby Error Policy- See Also:
CipherProvider.decrypt(byte[], int, int, byte[], int)
verifyIV
boolean verifyIV(byte[] IV)
getEncryptionBlockSize
public int getEncryptionBlockSize()
- Description copied from interface:
CipherProvider
- Returns the encryption block size used during creation of the encrypted database
- Specified by:
getEncryptionBlockSize
in interface CipherProvider
Apache Derby V10.6 Internals - Copyright © 2004,2007 The Apache Software Foundation. All Rights Reserved.