[2] | 1 | <?php |
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| 2 | |
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| 3 | |
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| 4 | /* |
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[34] | 5 | V4.94 23 Jan 2007 (c) 2000-2007 John Lim (jlim#natsoft.com.my). All rights reserved. |
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[2] | 6 | Contributed by Ross Smith (adodb@netebb.com). |
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| 7 | Released under both BSD license and Lesser GPL library license. |
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| 8 | Whenever there is any discrepancy between the two licenses, |
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| 9 | the BSD license will take precedence. |
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| 10 | Set tabs to 4 for best viewing. |
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| 11 | |
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| 12 | */ |
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| 13 | |
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| 14 | if (!function_exists('mcrypt_encrypt')) { |
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| 15 | trigger_error('Mcrypt functions are not available', E_USER_ERROR); |
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| 16 | return 0; |
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| 17 | } |
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| 18 | |
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| 19 | /** |
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| 20 | */ |
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| 21 | class ADODB_Encrypt_MCrypt { |
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| 22 | /** |
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| 23 | */ |
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| 24 | var $_cipher; |
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| 25 | |
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| 26 | /** |
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| 27 | */ |
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| 28 | var $_mode; |
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| 29 | |
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| 30 | /** |
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| 31 | */ |
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| 32 | var $_source; |
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| 33 | |
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| 34 | /** |
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| 35 | */ |
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| 36 | function getCipher() { |
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| 37 | return $this->_cipher; |
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| 38 | } |
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| 39 | |
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| 40 | /** |
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| 41 | */ |
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| 42 | function setCipher($cipher) { |
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| 43 | $this->_cipher = $cipher; |
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| 44 | } |
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| 45 | |
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| 46 | /** |
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| 47 | */ |
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| 48 | function getMode() { |
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| 49 | return $this->_mode; |
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| 50 | } |
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| 51 | |
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| 52 | /** |
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| 53 | */ |
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| 54 | function setMode($mode) { |
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| 55 | $this->_mode = $mode; |
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| 56 | } |
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| 57 | |
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| 58 | /** |
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| 59 | */ |
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| 60 | function getSource() { |
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| 61 | return $this->_source; |
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| 62 | } |
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| 63 | |
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| 64 | /** |
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| 65 | */ |
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| 66 | function setSource($source) { |
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| 67 | $this->_source = $source; |
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| 68 | } |
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| 69 | |
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| 70 | /** |
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| 71 | */ |
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| 72 | function ADODB_Encrypt_MCrypt($cipher = null, $mode = null, $source = null) { |
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| 73 | if (!$cipher) { |
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| 74 | $cipher = MCRYPT_RIJNDAEL_256; |
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| 75 | } |
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| 76 | if (!$mode) { |
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| 77 | $mode = MCRYPT_MODE_ECB; |
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| 78 | } |
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| 79 | if (!$source) { |
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| 80 | $source = MCRYPT_RAND; |
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| 81 | } |
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| 82 | |
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| 83 | $this->_cipher = $cipher; |
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| 84 | $this->_mode = $mode; |
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| 85 | $this->_source = $source; |
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| 86 | } |
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| 87 | |
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| 88 | /** |
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| 89 | */ |
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| 90 | function write($data, $key) { |
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| 91 | $iv_size = mcrypt_get_iv_size($this->_cipher, $this->_mode); |
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| 92 | $iv = mcrypt_create_iv($iv_size, $this->_source); |
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| 93 | return mcrypt_encrypt($this->_cipher, $key, $data, $this->_mode, $iv); |
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| 94 | } |
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| 95 | |
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| 96 | /** |
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| 97 | */ |
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| 98 | function read($data, $key) { |
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| 99 | $iv_size = mcrypt_get_iv_size($this->_cipher, $this->_mode); |
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| 100 | $iv = mcrypt_create_iv($iv_size, $this->_source); |
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| 101 | $rv = mcrypt_decrypt($this->_cipher, $key, $data, $this->_mode, $iv); |
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| 102 | return rtrim($rv, "\0"); |
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| 103 | } |
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| 104 | |
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| 105 | } |
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| 106 | |
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| 107 | return 1; |
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| 108 | |
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| 109 | ?> |
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