com.softabar.crypt
Class SoftaCryptHelper

java.lang.Object
  com.softabar.crypt.SoftaCryptHelper

public class SoftaCryptHelper

extends java.lang.Object

Helper methods for SoftaCrypt. See usage in main(java.lang.String[]).

Version:

1.0 Copyright (C) 2005 softabar.com

Constructor Summary

SoftaCryptHelper()

Method Summary

static void	aesDecrypt(java.lang.String passPhrase, java.io.File inFile, java.io.File outFile)
static void	aesEncrypt(java.lang.String passPhrase, java.io.File inFile, java.io.File outFile)
static void	base64Decode(java.io.File inFile, java.io.File outFile)
static void	base64Encode(java.io.File inFile, java.io.File outFile)
static java.lang.String	crc32(java.io.File file)
static java.lang.String	crc32(java.lang.String text)
static java.lang.String	digest(java.lang.String algorithm, java.io.File file)
static java.lang.String	digest(java.lang.String algorithm, java.lang.String text)
static void	main(java.lang.String[] args) Usage: java com.softabar.crypt.SoftaCryptHelper <command> <argument1> <argument2> ...
static byte[]	makeKey(java.lang.String passPhrase)
static void	twofishDecrypt(java.lang.String passPhrase, java.io.File inFile, java.io.File outFile)
static void	twofishEncrypt(java.lang.String passPhrase, java.io.File inFile, java.io.File outFile)
static void	xteaDecrypt(java.lang.String passPhrase, java.io.File inFile, java.io.File outFile)
static void	xteaEncrypt(java.lang.String passPhrase, java.io.File inFile, java.io.File outFile)

Methods inherited from class java.lang.Object

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

Constructor Detail

SoftaCryptHelper

public SoftaCryptHelper()

Method Detail

digest

public static java.lang.String digest(java.lang.String algorithm,
                                      java.lang.String text)

Parameters:

algorithm - Digest algorithm (sha1, sha224, sha256, sha384 or sha512)

text - Text to calculate digest

Returns:

String presentation of digest value

digest

public static java.lang.String digest(java.lang.String algorithm,
                                      java.io.File file)

Parameters:

algorithm - Digest algorithm (sha1, sha224, sha256, sha384 or sha512)

file - File to calculate digest

Returns:

String presentation of digest value

crc32

public static java.lang.String crc32(java.lang.String text)

Parameters:

text - Text to calculate CRC32

Returns:

CRC32 as hexadecimal string

crc32

public static java.lang.String crc32(java.io.File file)

Parameters:

file - File to calculate CRC32

Returns:

CRC32 as hexadecimal string

base64Encode

public static void base64Encode(java.io.File inFile,
                                java.io.File outFile)

Parameters:

inFile - File to encode

outFile - Encoded file

base64Decode

public static void base64Decode(java.io.File inFile,
                                java.io.File outFile)

Parameters:

inFile - File to decode

outFile - Decoded file

makeKey

public static byte[] makeKey(java.lang.String passPhrase)

Parameters:

passPhrase - Any string as passphrase

Returns:

16-byte key. Key is generated by calculating SHA-1 of passphrase and returning 16 left most bytes. If exception happened, returns key full of zeros

aesEncrypt

public static void aesEncrypt(java.lang.String passPhrase,
                              java.io.File inFile,
                              java.io.File outFile)

Parameters:

passPhrase - Passphrase for AES encryption

inFile - File to encrypt

outFile - Encrypted file

aesDecrypt

public static void aesDecrypt(java.lang.String passPhrase,
                              java.io.File inFile,
                              java.io.File outFile)

Parameters:

passPhrase - Passphrase for AES decryption

inFile - File to decrypt

outFile - Decrypted file

twofishEncrypt

public static void twofishEncrypt(java.lang.String passPhrase,
                                  java.io.File inFile,
                                  java.io.File outFile)

Parameters:

passPhrase - Passphrase for TwoFish decryption

inFile - File to encrypt

outFile - Encrypted file

twofishDecrypt

public static void twofishDecrypt(java.lang.String passPhrase,
                                  java.io.File inFile,
                                  java.io.File outFile)

Parameters:

passPhrase - Passphrase for TwoFish decryption

inFile - File to decrypt

outFile - Decrypted file

xteaEncrypt

public static void xteaEncrypt(java.lang.String passPhrase,
                               java.io.File inFile,
                               java.io.File outFile)

Parameters:

passPhrase - Passphrase for XTEA decryption

inFile - File to encrypt

outFile - Encrypted file

xteaDecrypt

public static void xteaDecrypt(java.lang.String passPhrase,
                               java.io.File inFile,
                               java.io.File outFile)

Parameters:

passPhrase - Passphrase for XTEA decryption

inFile - File to decrypt

outFile - Decrypted file

main

public static void main(java.lang.String[] args)

       Usage:
         java com.softabar.crypt.SoftaCryptHelper <command> <argument1> <argument2> ...
       
       Possible commands:
         sha1 -T<text to calculate digest> 
         sha1 <file name to calculate digest>
         sha224 -T<text to calculate digest> 
         sha224 <file name to calculate digest> 
         sha256 -T<text to calculate digest> 
         sha256 <file name to calculate digest> 
         sha384 -T<text to calculate digest> 
         sha384 <file name to calculate digest> 
         sha512 -T<text to calculate digest> 
         sha512 <file name to calculate digest> 
         crc32 -T<text to calculate crc32> 
         crc32 <file name to calculate crc32> 
         base64encode <input file> <output file> 
         base64decode <input file> <output file> 
         aes-encrypt <pass phrase> <input file> <output file> 
         aes-decrypt <pass phrase> <input file> <output file> 
         twofish-encrypt <pass phrase> <input file> <output file> 
         twofish-decrypt <pass phrase> <input file> <output file> 
         xtea-encrypt <pass phrase> <input file> <output file> 
         xtea-decrypt <pass phrase> <input file> <output file> 
 

Parameters:

args -