cryptix.provider.cipher
public final class IDEA extends Cipher implements SymmetricCipher
IDEA was written by Dr. X. Lai and Prof. J. Massey.
References:
Copyright © 1995-1997
Systemics Ltd on behalf of the
Cryptix Development Team.
All rights reserved.
$Revision: 1.4 $
Since: Cryptix 2.2.2
Constructor Summary | |
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IDEA()
Constructs an IDEA cipher object, in the UNINITIALIZED state.
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Method Summary | |
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Object | clone()
Always throws a CloneNotSupportedException (cloning of ciphers is not
supported for security reasons). |
protected int | engineBlockSize()
SPI: Returns the length of an input block, in bytes.
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protected void | engineInitDecrypt(Key key)
SPI: Initializes this cipher for decryption, using the
specified key.
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protected void | engineInitEncrypt(Key key)
SPI: Initializes this cipher for encryption, using the
specified key.
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protected int | engineUpdate(byte[] in, int inOffset, int inLen, byte[] out, int outOffset)
SPI: This is the main engine method for updating data.
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protected void | finalize()
Cleans up resources used by this instance, if necessary. |
static LinkStatus | getLinkStatus()
Gets an object representing the native linking status of this class. |
static void | main(String[] argv)
Entry point for very basic self_test . |
static void | self_test()
Do some basic tests.
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Returns: the length in bytes of an input block for this cipher.
Parameters: key the key to use for encryption.
Throws: InvalidKeyException if one of the following occurs:
Parameters: key the key to use for encryption.
Throws: InvalidKeyException if one of the following occurs:
in and out may be the same array, and the input and output regions may overlap.
Parameters: in the input data. inOffset the offset into in specifying where the data starts. inLen the length of the subarray. out the output array. outOffset the offset indicating where to start writing into the out array.
Returns: the number of bytes written.
Throws: CryptixException if the native library is being used, and it reports an error.
self_test
.See Also: cryptix.examples.IDEA