maspack.crypt

Class CryptorBase

java.lang.Object

maspack.crypt.CryptorBase

All Implemented Interfaces:

Cryptor

Direct Known Subclasses:

AESCryptor, GenericCryptor

public class CryptorBase
extends java.lang.Object
implements Cryptor

Constructor Summary

Constructors

Constructor and Description
CryptorBase()
CryptorBase(javax.crypto.Cipher cipher, javax.crypto.spec.SecretKeySpec keySpec, javax.crypto.spec.IvParameterSpec ivSpec)

Method Summary

Modifier and Type	Method and Description
byte[]	decrypt(byte[] data)
java.lang.String	decrypt(java.lang.String str)
byte[]	encrypt(byte[] data)
java.lang.String	encrypt(java.lang.String str)
static byte[]	generateKeyFromPassphrase(java.lang.String passphrase) Create an AES key from a SHA-2 hash of a passphrase
void	setHexKey(java.lang.String hexKey)
void	setIV(byte[] bytes) Sets initialization vector for algorithm
void	setIV(byte[] bytes, int len) Sets initialization vector for algorithm with a given length.
void	setIV(javax.crypto.spec.IvParameterSpec ivSpec) Sets initialization vector for algorithm
void	setIV(java.lang.String iv64) Sets initialization vector
void	setIVHex(java.lang.String ivHex) Sets initialization vector
void	setKey(byte[] key)
void	setKey(java.lang.String base64key)
void	setKeyFromPassphrase(java.lang.String passphrase)

Methods inherited from class java.lang.Object

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

Constructor Detail

CryptorBase

public CryptorBase()

CryptorBase

public CryptorBase(javax.crypto.Cipher cipher,
                   javax.crypto.spec.SecretKeySpec keySpec,
                   javax.crypto.spec.IvParameterSpec ivSpec)

Method Detail

setKey

public void setKey(byte[] key)

setKey

public void setKey(java.lang.String base64key)
            throws java.lang.Exception

Throws:

java.lang.Exception

setHexKey

public void setHexKey(java.lang.String hexKey)
               throws java.lang.Exception

Throws:

java.lang.Exception

setKeyFromPassphrase

public void setKeyFromPassphrase(java.lang.String passphrase)

generateKeyFromPassphrase

public static byte[] generateKeyFromPassphrase(java.lang.String passphrase)

Create an AES key from a SHA-2 hash of a passphrase

Parameters:

passphrase - string describing the passphrase

Returns:

generated key

setIV

public void setIV(javax.crypto.spec.IvParameterSpec ivSpec)

Sets initialization vector for algorithm

Parameters:

ivSpec - initialization vector

setIV

public void setIV(byte[] bytes)

Sets initialization vector for algorithm

Parameters:

bytes - initialization vector as bytes

setIV

public void setIV(byte[] bytes,
                  int len)

Sets initialization vector for algorithm with a given length. The bytes are either trimmed or looped.

Parameters:

bytes - initialization vector as bytes

len - length of the vector

setIV

public void setIV(java.lang.String iv64)

Sets initialization vector

Parameters:

iv64 - base64-encoded bytes

setIVHex

public void setIVHex(java.lang.String ivHex)

Sets initialization vector

Parameters:

ivHex - base16-encoded bytes

encrypt

public java.lang.String encrypt(java.lang.String str)

Specified by:

encrypt in interface Cryptor

decrypt

public java.lang.String decrypt(java.lang.String str)

Specified by:

decrypt in interface Cryptor

encrypt

public byte[] encrypt(byte[] data)

Specified by:

encrypt in interface Cryptor

decrypt

public byte[] decrypt(byte[] data)

Specified by:

decrypt in interface Cryptor