1 | <?php |
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2 | |
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3 | |
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4 | /* |
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5 | V4.94 23 Jan 2007 (c) 2000-2007 John Lim (jlim#natsoft.com.my). All rights reserved. |
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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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