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1 <?php
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2 /**
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3 * Part of Crypt_GPG
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4 *
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5 * PHP version 5
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6 *
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7 * @category Encryption
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8 * @package Crypt_GPG
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9 * @author Christian Weiske <cweiske@php.net>
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10 * @copyright 2015 PEAR
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11 * @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
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12 * @link http://pear.php.net/package/Crypt_GPG
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13 * @link http://pear.php.net/manual/en/package.encryption.crypt-gpg.php
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14 * @link http://www.gnupg.org/
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15 */
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16
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17 /**
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18 * Information about a recently created signature.
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19 *
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20 * @category Encryption
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21 * @package Crypt_GPG
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22 * @author Christian Weiske <cweiske@php.net>
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23 * @copyright 2015 PEAR
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24 * @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
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25 * @link http://pear.php.net/package/Crypt_GPG
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26 * @link http://pear.php.net/manual/en/package.encryption.crypt-gpg.php
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27 * @link http://www.gnupg.org/
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28 */
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29 class Crypt_GPG_SignatureCreationInfo
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30 {
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31 /**
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32 * One of the three signature types:
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33 * - {@link Crypt_GPG::SIGN_MODE_NORMAL}
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34 * - {@link Crypt_GPG::SIGN_MODE_CLEAR}
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35 * - {@link Crypt_GPG::SIGN_MODE_DETACHED}
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36 *
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37 * @var integer
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38 */
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39 protected $mode;
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40
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41 /**
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42 * Public Key algorithm
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43 *
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44 * @var integer
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45 */
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46 protected $pkAlgorithm;
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47
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48 /**
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49 * Algorithm to hash the data
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50 *
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51 * @see RFC 2440 / 9.4. Hash Algorithm
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52 * @var integer
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53 */
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54 protected $hashAlgorithm;
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55
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56 /**
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57 * OpenPGP signature class
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58 *
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59 * @var mixed
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60 */
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61 protected $class;
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62
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63 /**
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64 * Unix timestamp when the signature was created
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65 *
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66 * @var integer
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67 */
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68 protected $timestamp;
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69
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70 /**
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71 * Key fingerprint
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72 *
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73 * @var string
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74 */
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75 protected $keyFingerprint;
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76
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77 /**
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78 * If the line given to the constructor was valid
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79 *
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80 * @var boolean
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81 */
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82 protected $valid;
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83
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84 /**
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85 * Names for the hash algorithm IDs.
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86 *
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87 * Names taken from RFC 3156, without the leading "pgp-".
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88 *
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89 * @see RFC 2440 / 9.4. Hash Algorithm
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90 * @see RFC 3156 / 5. OpenPGP signed data
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91 * @var array
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92 */
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93 protected static $hashAlgorithmNames = array(
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94 1 => 'md5',
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95 2 => 'sha1',
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96 3 => 'ripemd160',
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97 5 => 'md2',
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98 6 => 'tiger192',
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99 7 => 'haval-5-160',
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100 8 => 'sha256',
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101 9 => 'sha384',
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102 10 => 'sha512',
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103 11 => 'sha224',
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104 );
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105
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106 /**
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107 * Parse a SIG_CREATED line from gnupg
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108 *
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109 * @param string $sigCreatedLine Line beginning with "SIG_CREATED "
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110 */
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111 public function __construct($sigCreatedLine = null)
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112 {
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113 if ($sigCreatedLine === null) {
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114 $this->valid = false;
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115 return;
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116 }
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117
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118 $parts = explode(' ', $sigCreatedLine);
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119 if (count($parts) !== 7) {
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120 $this->valid = false;
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121 return;
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122 }
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123 list(
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124 $title, $mode, $pkAlgorithm, $hashAlgorithm,
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125 $class, $timestamp, $keyFingerprint
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126 ) = $parts;
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127
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128 switch (strtoupper($mode[0])) {
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129 case 'D':
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130 $this->mode = Crypt_GPG::SIGN_MODE_DETACHED;
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131 break;
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132 case 'C':
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133 $this->mode = Crypt_GPG::SIGN_MODE_CLEAR;
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134 break;
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135 case 'S':
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136 $this->mode = Crypt_GPG::SIGN_MODE_NORMAL;
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137 break;
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138 }
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139
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140 $this->pkAlgorithm = (int) $pkAlgorithm;
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141 $this->hashAlgorithm = (int) $hashAlgorithm;
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142 $this->class = $class;
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143 if (is_numeric($timestamp)) {
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144 $this->timestamp = (int) $timestamp;
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145 } else {
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146 $this->timestamp = strtotime($timestamp);
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147 }
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148 $this->keyFingerprint = $keyFingerprint;
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149 $this->valid = true;
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150 }
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151
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152 /**
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153 * Get the signature type
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154 * - {@link Crypt_GPG::SIGN_MODE_NORMAL}
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155 * - {@link Crypt_GPG::SIGN_MODE_CLEAR}
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156 * - {@link Crypt_GPG::SIGN_MODE_DETACHED}
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157 *
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158 * @return integer
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159 */
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160 public function getMode()
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161 {
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162 return $this->mode;
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163 }
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164
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165 /**
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166 * Return the public key algorithm used.
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167 *
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168 * @return integer
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169 */
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170 public function getPkAlgorithm()
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171 {
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172 return $this->pkAlgorithm;
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173 }
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174
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175 /**
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176 * Return the hash algorithm used to hash the data to sign.
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177 *
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178 * @return integer
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179 */
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180 public function getHashAlgorithm()
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181 {
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182 return $this->hashAlgorithm;
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183 }
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184
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185 /**
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186 * Get a name for the used hashing algorithm.
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187 *
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188 * @return string|null
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189 */
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190 public function getHashAlgorithmName()
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191 {
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192 if (!isset(self::$hashAlgorithmNames[$this->hashAlgorithm])) {
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193 return null;
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194 }
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195 return self::$hashAlgorithmNames[$this->hashAlgorithm];
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196 }
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197
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198 /**
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199 * Return the timestamp at which the signature was created
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200 *
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201 * @return integer
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202 */
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203 public function getTimestamp()
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204 {
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205 return $this->timestamp;
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206 }
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207
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208 /**
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209 * Return the key's fingerprint
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210 *
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211 * @return string
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212 */
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213 public function getKeyFingerprint()
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214 {
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215 return $this->keyFingerprint;
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216 }
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217
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218 /**
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219 * Tell if the fingerprint line given to the constructor was valid
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220 *
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221 * @return boolean
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222 */
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223 public function isValid()
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224 {
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225 return $this->valid;
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226 }
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227 }
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228 ?>
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