biz.source_code.crypto

Class IdeaFileEncryption

java.lang.Object

biz.source_code.crypto.IdeaFileEncryption

public class IdeaFileEncryption
extends Object

Encrypts or decrypts a file with IDEA.

The file format is compatible with that of IDEA V1.1 (IDEA_CMD.C, ETH version). The length of the plaintext data file is appended to the encrypted file in an 8 byte suffix.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	IdeaFileEncryption.Mode Block cipher mode of operation.

Constructor Summary

Constructors

Constructor and Description
IdeaFileEncryption()

Method Summary

Modifier and Type	Method and Description
static void	cryptFile(String inputFileName, String outputFileName, String charKey, boolean encrypt, IdeaFileEncryption.Mode mode) Encrypts or decrypts a file.

Methods inherited from class java.lang.Object

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

Constructor Detail

IdeaFileEncryption

public IdeaFileEncryption()

Method Detail

cryptFile

public static void cryptFile(String inputFileName,
                             String outputFileName,
                             String charKey,
                             boolean encrypt,
                             IdeaFileEncryption.Mode mode)
                      throws IOException

Encrypts or decrypts a file.

Parameters:

inputFileName - Name of the input file.

outputFileName - Name of the output file.

charKey - The encryption key. A string of ASCII characters within the range 0x21 .. 0x7E.

encrypt - true to encrypt, false to decrypt.

mode - Mode of operation.

Throws:

IOException