Horde 3.1.3 : Vue détaillée de cast128.php

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Horde_Cipher_cast128:: (12 méthodes):
  setKey()
  getBlockSize()
  encryptBlock()
  decryptBlock()
  f1()
  f2()
  f3()
  _formatData()
  _formatKey()
  _keySchedule()
  _split()
  _combine4()

Classe: Horde_Cipher_cast128 - X-Ref

The Cipher_cast128:: class implements the Cipher interface encryption data
using the CAST128 (aka Cast5) algorithm as defined in RFC2144.

$Horde: framework/Cipher/Cipher/cast128.php,v 1.7.12.8 2006/01/01 21:28:10 jan Exp $

Copyright 2002-2006 Mike Cochrane <mike@graftonhall.co.nz>

See the enclosed file COPYING for license information (LGPL). If you
did not receive this file, see http://www.fsf.org/copyleft/lgpl.html.

setKey($key) X-Ref

Set the key to be used for en/decryption.

param: string $key The key to use.

getBlockSize() X-Ref

Return the size of the blocks that this cipher needs.

return: integer The number of characters per block.

encryptBlock($block, $key = null) X-Ref

Encrypt a block of data.

param: string $block  The data to encrypt.
param: string $key    The key to use.
return: string  The encrypted output.

decryptBlock($block, $key = null) X-Ref

Decrypt a block of data.

param: string $block  The data to decrypt.
param: string $key    The key to use.
return: string  The decrypted output.

f1($d, $Km, $Kr) X-Ref

f1()

f2($d, $Km, $Kr) X-Ref

f2()

f3($d, $Km, $Kr) X-Ref

f3()

_formatData($data) X-Ref

Convert a string into a array of the ordinates of its characters.

param: string $data Data to convert.
return: array The converted data.

_formatKey($key) X-Ref

Converts a text key into an array padded with \0's to a length of 128
bits.

param: string $key The key to format.
return: array The padded key.

_keySchedule($key) X-Ref

Create the complete key shedule.

param: array $key The key to use.

_split($x) X-Ref

Unpack the 32 bit value into an array of four 8 bit values.

param: integer $x 32 bit value.
return: array Four 8 bit values MS to LS.

_combine4($key, $start = 0) X-Ref

Pack four 8 bit values into one 32 bit value.

param: array $key      Array of 8 bit values.
param: integer $start  Start position in array to get 4 values from.
return: integer  32 bit value.

Code source de Horde 3.1.3

/lib/Horde/Cipher/ -> cast128.php (sommaire)

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