1 2 3 4 5 <!DOCTYPE html> 6 <html lang="en"> 7 <head> 8 <meta charset="utf-8" /> 9 <meta name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1,shrink-to-fit=no" /> 10 <title>MagickCore, C API: Convert to and from Cipher Pixels @ ImageMagick</title> 11 <meta name="application-name" content="ImageMagick" /> 12 <meta name="description" content="Use ImageMagick to create, edit, compose, or convert bitmap images. You can resize your image, crop it, change its shades and colors, add captions, among other operations." /> 13 <meta name="application-url" content="https://imagemagick.org" /> 14 <meta name="generator" content="PHP" /> 15 <meta name="keywords" content="magickcore, c, api:, convert, to, from, cipher, pixels, ImageMagick, PerlMagick, image processing, image, photo, software, Magick++, OpenMP, convert" /> 16 <meta name="rating" content="GENERAL" /> 17 <meta name="robots" content="INDEX, FOLLOW" /> 18 <meta name="generator" content="ImageMagick Studio LLC" /> 19 <meta name="author" content="ImageMagick Studio LLC" /> 20 <meta name="revisit-after" content="2 DAYS" /> 21 <meta name="resource-type" content="document" /> 22 <meta name="copyright" content="Copyright (c) 1999-2017 ImageMagick Studio LLC" /> 23 <meta name="distribution" content="Global" /> 24 <meta name="magick-serial" content="P131-S030410-R485315270133-P82224-A6668-G1245-1" /> 25 <meta name="google-site-verification" content="_bMOCDpkx9ZAzBwb2kF3PRHbfUUdFj2uO8Jd1AXArz4" /> 26 <link href="cipher.html" rel="canonical" /> 27 <link href="../../images/wand.png" rel="icon" /> 28 <link href="../../images/wand.ico" rel="shortcut icon" /> 29 <link href="../assets/magick.css" rel="stylesheet" /> 30 </head> 31 <body> 32 <header> 33 <nav class="navbar navbar-expand-md navbar-dark fixed-top bg-dark"> 34 <a class="navbar-brand" href="../../"><img class="d-block" id="icon" alt="ImageMagick" width="32" height="32" src="../../images/wand.ico"/></a> 35 <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsMagick" aria-controls="navbarsMagick" aria-expanded="false" aria-label="Toggle navigation"> 36 <span class="navbar-toggler-icon"></span> 37 </button> 38 39 <div class="navbar-collapse collapse" id="navbarsMagick" style=""> 40 <ul class="navbar-nav mr-auto"> 41 <li class="nav-item "> 42 <a class="nav-link" href="quantize.html">Home <span class="sr-only">(current)</span></a> 43 </li> 44 <li class="nav-item "> 45 <a class="nav-link" href="../../www/download.html">Download</a> 46 </li> 47 <li class="nav-item "> 48 <a class="nav-link" href="../../www/command-line-tools.html">Tools</a> 49 </li> 50 <li class="nav-item "> 51 <a class="nav-link" href="../../www/command-line-processing.html">Command-line</a> 52 </li> 53 <li class="nav-item "> 54 <a class="nav-link" href="../../www/resources.html">Resources</a> 55 </li> 56 <li class="nav-item "> 57 <a class="nav-link" href="../../www/develop.html">Develop</a> 58 </li> 59 <li class="nav-item"> 60 <a class="nav-link" target="_blank" href="https://imagemagick.org/discourse-server/">Community</a> 61 </li> 62 </ul> 63 <form class="form-inline my-2 my-lg-0" action="https://imagemagick.org/script/search.php"> 64 <input class="form-control mr-sm-2" type="text" name="q" placeholder="Search" aria-label="Search"> 65 <button class="btn btn-outline-success my-2 my-sm-0" type="submit" name="sa">Search</button> 66 </form> 67 </div> 68 </nav> 69 <div class="container"> 70 <script async="async" src="https://localhost/pagead/js/adsbygoogle.js"></script> <ins class="adsbygoogle" 71 style="display:block" 72 data-ad-client="ca-pub-3129977114552745" 73 data-ad-slot="6345125851" 74 data-ad-format="auto"></ins> 75 <script> 76 (adsbygoogle = window.adsbygoogle || []).push({}); 77 </script> 78 79 </div> 80 </header> 81 <main class="container"> 82 <div class="magick-template"> 83 <div class="magick-header"> 84 <p class="text-center"><a href="cipher.html#AcquireAESInfo">AcquireAESInfo</a> • <a href="cipher.html#DestroyAESInfo">DestroyAESInfo</a> • <a href="cipher.html#EncipherAESBlock">EncipherAESBlock</a> • <a href="cipher.html#PasskeyDecipherImage">PasskeyDecipherImage</a> • <a href="cipher.html#PasskeyEncipherImage">PasskeyEncipherImage</a> • <a href="cipher.html#SetAESKey">SetAESKey</a> • <a href="cipher.html#PasskeyDecipherImage">PasskeyDecipherImage</a> • <a href="cipher.html#PasskeyEncipherImage">PasskeyEncipherImage</a></p> 85 86 <h2><a href="../../api/MagickCore/cipher_8c.html" id="AcquireAESInfo">AcquireAESInfo</a></h2> 87 88 <p>AcquireAESInfo() allocate the AESInfo structure.</p> 89 90 <p>The format of the AcquireAESInfo method is:</p> 91 92 <pre class="text"> 93 AESInfo *AcquireAESInfo(void) 94 </pre> 95 96 <h2><a href="../../api/MagickCore/cipher_8c.html" id="DestroyAESInfo">DestroyAESInfo</a></h2> 97 98 <p>DestroyAESInfo() zeros memory associated with the AESInfo structure.</p> 99 100 <p>The format of the DestroyAESInfo method is:</p> 101 102 <pre class="text"> 103 AESInfo *DestroyAESInfo(AESInfo *aes_info) 104 </pre> 105 106 <p>A description of each parameter follows:</p> 107 108 <dd> 109 </dd> 110 111 <dd> </dd> 112 <dl class="dl-horizontal"> 113 <dt>aes_info</dt> 114 <dd>the cipher context. </dd> 115 116 <dd> </dd> 117 </dl> 118 <h2><a href="../../api/MagickCore/cipher_8c.html" id="EncipherAESBlock">EncipherAESBlock</a></h2> 119 120 <p>EncipherAESBlock() enciphers a single block of plaintext to produce a block of ciphertext.</p> 121 122 <p>The format of the EncipherAESBlock method is:</p> 123 124 <pre class="text"> 125 void EncipherAES(AESInfo *aes_info,const unsigned char *plaintext, 126 unsigned char *ciphertext) 127 </pre> 128 129 <p>A description of each parameter follows:</p> 130 131 <dd> 132 </dd> 133 134 <dd> </dd> 135 <dl class="dl-horizontal"> 136 <dt>aes_info</dt> 137 <dd>the cipher context. </dd> 138 139 <dd> </dd> 140 <dt>plaintext</dt> 141 <dd>the plain text. </dd> 142 143 <dd> </dd> 144 <dt>ciphertext</dt> 145 <dd>the cipher text. </dd> 146 147 <dd> </dd> 148 </dl> 149 <h2><a href="../../api/MagickCore/cipher_8c.html" id="PasskeyDecipherImage">PasskeyDecipherImage</a></h2> 150 151 <p>PasskeyDecipherImage() converts cipher pixels to plain pixels.</p> 152 153 <p>The format of the PasskeyDecipherImage method is:</p> 154 155 <pre class="text"> 156 MagickBooleanType PasskeyDecipherImage(Image *image, 157 const StringInfo *passkey,ExceptionInfo *exception) 158 MagickBooleanType DecipherImage(Image *image,const char *passphrase, 159 ExceptionInfo *exception) 160 </pre> 161 162 <p>A description of each parameter follows:</p> 163 164 <dd> 165 </dd> 166 167 <dd> </dd> 168 <dl class="dl-horizontal"> 169 <dt>image</dt> 170 <dd>the image. </dd> 171 172 <dd> </dd> 173 <dt>passphrase</dt> 174 <dd>decipher cipher pixels with this passphrase. </dd> 175 176 <dd> </dd> 177 <dt>passkey</dt> 178 <dd>decrypt cipher pixels with this passkey. </dd> 179 180 <dd> </dd> 181 <dt>exception</dt> 182 <dd>return any errors or warnings in this structure. </dd> 183 184 <dd> </dd> 185 </dl> 186 <h2><a href="../../api/MagickCore/cipher_8c.html" id="PasskeyEncipherImage">PasskeyEncipherImage</a></h2> 187 188 <p>PasskeyEncipherImage() converts pixels to cipher-pixels.</p> 189 190 <p>The format of the PasskeyEncipherImage method is:</p> 191 192 <pre class="text"> 193 MagickBooleanType PasskeyEncipherImage(Image *image, 194 const StringInfo *passkey,ExceptionInfo *exception) 195 MagickBooleanType EncipherImage(Image *image,const char *passphrase, 196 ExceptionInfo *exception) 197 </pre> 198 199 <p>A description of each parameter follows:</p> 200 201 <dd> 202 </dd> 203 204 <dd> </dd> 205 <dl class="dl-horizontal"> 206 <dt>image</dt> 207 <dd>the image. </dd> 208 209 <dd> </dd> 210 <dt>passphrase</dt> 211 <dd>encipher pixels with this passphrase. </dd> 212 213 <dd> </dd> 214 <dt>passkey</dt> 215 <dd>decrypt cipher pixels with this passkey. </dd> 216 217 <dd> </dd> 218 <dt>exception</dt> 219 <dd>return any errors or warnings in this structure. </dd> 220 221 <dd> </dd> 222 </dl> 223 <h2><a href="../../api/MagickCore/cipher_8c.html" id="SetAESKey">SetAESKey</a></h2> 224 225 <p>SetAESKey() sets the key for the AES cipher. The key length is specified in bits. Valid values are 128, 192, or 256 requiring a key buffer length in bytes of 16, 24, and 32 respectively.</p> 226 227 <p>The format of the SetAESKey method is:</p> 228 229 <pre class="text"> 230 SetAESKey(AESInfo *aes_info,const StringInfo *key) 231 </pre> 232 233 <p>A description of each parameter follows:</p> 234 235 <dd> 236 </dd> 237 238 <dd> </dd> 239 <dl class="dl-horizontal"> 240 <dt>aes_info</dt> 241 <dd>the cipher context. </dd> 242 243 <dd> </dd> 244 <dt>key</dt> 245 <dd>the key. </dd> 246 247 <dd> </dd> 248 </dl> 249 <h2><a href="../../api/MagickCore/cipher_8c.html" id="PasskeyDecipherImage">PasskeyDecipherImage</a></h2> 250 251 <p>PasskeyDecipherImage() converts cipher pixels to plain pixels.</p> 252 253 <p>The format of the PasskeyDecipherImage method is:</p> 254 255 <pre class="text"> 256 MagickBooleanType PasskeyDecipherImage(Image *image, 257 const StringInfo *passkey,ExceptionInfo *exception) 258 MagickBooleanType DecipherImage(Image *image,const char *passphrase, 259 ExceptionInfo *exception) 260 </pre> 261 262 <p>A description of each parameter follows:</p> 263 264 <dd> 265 </dd> 266 267 <dd> </dd> 268 <dl class="dl-horizontal"> 269 <dt>image</dt> 270 <dd>the image. </dd> 271 272 <dd> </dd> 273 <dt>passphrase</dt> 274 <dd>decipher cipher pixels with this passphrase. </dd> 275 276 <dd> </dd> 277 <dt>passkey</dt> 278 <dd>decrypt cipher pixels with this passkey. </dd> 279 280 <dd> </dd> 281 <dt>exception</dt> 282 <dd>return any errors or warnings in this structure. </dd> 283 284 <dd> </dd> 285 </dl> 286 <h2><a href="../../api/MagickCore/cipher_8c.html" id="PasskeyEncipherImage">PasskeyEncipherImage</a></h2> 287 288 <p>PasskeyEncipherImage() converts pixels to cipher-pixels.</p> 289 290 <p>The format of the PasskeyEncipherImage method is:</p> 291 292 <pre class="text"> 293 MagickBooleanType PasskeyEncipherImage(Image *image, 294 const StringInfo *passkey,ExceptionInfo *exception) 295 MagickBooleanType EncipherImage(Image *image,const char *passphrase, 296 ExceptionInfo *exception) 297 </pre> 298 299 <p>A description of each parameter follows:</p> 300 301 <dd> 302 </dd> 303 304 <dd> </dd> 305 <dl class="dl-horizontal"> 306 <dt>passphrase</dt> 307 <dd>decipher cipher pixels with this passphrase. </dd> 308 309 <dd> </dd> 310 <dt>passkey</dt> 311 <dd>decrypt cipher pixels with this passkey. </dd> 312 313 <dd> </dd> 314 <dt>exception</dt> 315 <dd>return any errors or warnings in this structure. </dd> 316 317 <dd> </dd> 318 </dl> 319 </div> 320 </div> 321 </main><!-- /.container --> 322 <footer class="magick-footer"> 323 <p><a href="../../www/security-policy.html">Security</a> 324 <a href="../../www/architecture.html">Architecture</a> 325 <a href="../../www/links.html">Related</a> 326 <a href="../../www/sitemap.html">Sitemap</a> 327 328 <a href="cipher.html#"><img class="d-inline" id="wand" alt="And Now a Touch of Magick" width="16" height="16" src="../../images/wand.ico"/></a> 329 330 <a href="http://pgp.mit.edu/pks/lookup?op=get&search=0x89AB63D48277377A">Public Key</a> 331 <a href="../../www/support.html">Donate</a> 332 <a href="../../www/contact.html">Contact Us</a> 333 <br/> 334 <small> 1999-2019 ImageMagick Studio LLC</small></p> 335 </footer> 336 337 <!-- Javascript assets --> 338 <script src="../assets/magick.js" crossorigin="anonymous"></script> 339 <script>window.jQuery || document.write('<script src="https://localhost/ajax/libs/jquery/3.3.1/jquery.min.js"><\/script>')</script> 340 </body> 341 </html> 342 <!-- Magick Cache 29th December 2018 16:44 -->
