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cristy | 307ba18 | 2010-12-25 01:00:34 +0000 | [diff] [blame] | 174 | <h1>Module cipher |
| 175 | Methods</h1> |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 176 | <p class="navigation-index">[<a href="#AcquireAESInfo">AcquireAESInfo</a> • <a href="#DestroyAESInfo">DestroyAESInfo</a> • <a href="#EncipherAESBlock">EncipherAESBlock</a> • <a href="#PasskeyDecipherImage">PasskeyDecipherImage</a> • <a href="#PasskeyEncipherImage">PasskeyEncipherImage</a> • <a href="#SetAESKey">SetAESKey</a> • <a href="#PasskeyDecipherImage">PasskeyDecipherImage</a> • <a href="#PasskeyEncipherImage">PasskeyEncipherImage</a>]</p> |
| 177 | |
| 178 | <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher |
| 179 | _8c.html" target="source" name="AcquireAESInfo">AcquireAESInfo</a></h2> |
| 180 | <div class="doc-section"> |
| 181 | |
| 182 | <p>AcquireAESInfo() allocate the AESInfo structure.</p></ol> |
| 183 | |
| 184 | <p>The format of the AcquireAESInfo method is:</p> |
| 185 | |
| 186 | <pre class="code"> |
| 187 | AESInfo *AcquireAESInfo(void) |
| 188 | </pre> |
| 189 | |
| 190 | </div> |
| 191 | <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher |
| 192 | _8c.html" target="source" name="DestroyAESInfo">DestroyAESInfo</a></h2> |
| 193 | <div class="doc-section"> |
| 194 | |
| 195 | <p>DestroyAESInfo() zeros memory associated with the AESInfo structure.</p></ol> |
| 196 | |
| 197 | <p>The format of the DestroyAESInfo method is:</p> |
| 198 | |
| 199 | <pre class="code"> |
| 200 | AESInfo *DestroyAESInfo(AESInfo *aes_info) |
| 201 | </pre> |
| 202 | |
| 203 | <p>A description of each parameter follows:</p></ol> |
| 204 | |
| 205 | <h5>aes_info</h5> |
| 206 | <ol><p>the cipher context.</p></ol> |
| 207 | |
| 208 | </div> |
| 209 | <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher |
| 210 | _8c.html" target="source" name="EncipherAESBlock">EncipherAESBlock</a></h2> |
| 211 | <div class="doc-section"> |
| 212 | |
| 213 | <p>EncipherAESBlock() enciphers a single block of plaintext to produce a block of ciphertext.</p></ol> |
| 214 | |
| 215 | <p>The format of the EncipherAESBlock method is:</p> |
| 216 | |
| 217 | <pre class="code"> |
| 218 | void EncipherAES(AESInfo *aes_info,const unsigned char *plaintext, |
| 219 | unsigned char *ciphertext) |
| 220 | </pre> |
| 221 | |
| 222 | <p>A description of each parameter follows:</p></ol> |
| 223 | |
| 224 | <h5>aes_info</h5> |
| 225 | <ol><p>the cipher context.</p></ol> |
| 226 | |
| 227 | <h5>plaintext</h5> |
| 228 | <ol><p>the plain text.</p></ol> |
| 229 | |
| 230 | <h5>ciphertext</h5> |
| 231 | <ol><p>the cipher text.</p></ol> |
| 232 | |
| 233 | </div> |
| 234 | <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher |
| 235 | _8c.html" target="source" name="PasskeyDecipherImage">PasskeyDecipherImage</a></h2> |
| 236 | <div class="doc-section"> |
| 237 | |
| 238 | <p>PasskeyDecipherImage() converts cipher pixels to plain pixels.</p></ol> |
| 239 | |
| 240 | <p>The format of the PasskeyDecipherImage method is:</p> |
| 241 | |
| 242 | <pre class="code"> |
| 243 | MagickBooleanType PasskeyDecipherImage(Image *image, |
| 244 | const StringInfo *passkey,ExceptionInfo *exception) |
| 245 | MagickBooleanType DecipherImage(Image *image,const char *passphrase, |
| 246 | ExceptionInfo *exception) |
| 247 | </pre> |
| 248 | |
| 249 | <p>A description of each parameter follows:</p></ol> |
| 250 | |
| 251 | <h5>image</h5> |
| 252 | <ol><p>the image.</p></ol> |
| 253 | |
| 254 | <h5>passphrase</h5> |
| 255 | <ol><p>decipher cipher pixels with this passphrase.</p></ol> |
| 256 | |
| 257 | <h5>passkey</h5> |
| 258 | <ol><p>decrypt cipher pixels with this passkey.</p></ol> |
| 259 | |
| 260 | <h5>exception</h5> |
| 261 | <ol><p>return any errors or warnings in this structure.</p></ol> |
| 262 | |
| 263 | </div> |
| 264 | <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher |
| 265 | _8c.html" target="source" name="PasskeyEncipherImage">PasskeyEncipherImage</a></h2> |
| 266 | <div class="doc-section"> |
| 267 | |
| 268 | <p>PasskeyEncipherImage() converts pixels to cipher-pixels.</p></ol> |
| 269 | |
| 270 | <p>The format of the PasskeyEncipherImage method is:</p> |
| 271 | |
| 272 | <pre class="code"> |
| 273 | MagickBooleanType PasskeyEncipherImage(Image *image, |
| 274 | const StringInfo *passkey,ExceptionInfo *exception) |
| 275 | MagickBooleanType EncipherImage(Image *image,const char *passphrase, |
| 276 | ExceptionInfo *exception) |
| 277 | </pre> |
| 278 | |
| 279 | <p>A description of each parameter follows:</p></ol> |
| 280 | |
| 281 | <h5>image</h5> |
| 282 | <ol><p>the image.</p></ol> |
| 283 | |
| 284 | <h5>passphrase</h5> |
| 285 | <ol><p>encipher pixels with this passphrase.</p></ol> |
| 286 | |
| 287 | <h5>passkey</h5> |
| 288 | <ol><p>decrypt cipher pixels with this passkey.</p></ol> |
| 289 | |
| 290 | <h5>exception</h5> |
| 291 | <ol><p>return any errors or warnings in this structure.</p></ol> |
| 292 | |
| 293 | </div> |
| 294 | <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher |
| 295 | _8c.html" target="source" name="SetAESKey">SetAESKey</a></h2> |
| 296 | <div class="doc-section"> |
| 297 | |
| 298 | <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></ol> |
| 299 | |
| 300 | <p>The format of the SetAESKey method is:</p> |
| 301 | |
| 302 | <pre class="code"> |
| 303 | SetAESKey(AESInfo *aes_info,const StringInfo *key) |
| 304 | </pre> |
| 305 | |
| 306 | <p>A description of each parameter follows:</p></ol> |
| 307 | |
| 308 | <h5>aes_info</h5> |
| 309 | <ol><p>the cipher context.</p></ol> |
| 310 | |
| 311 | <h5>key</h5> |
| 312 | <ol><p>the key.</p></ol> |
| 313 | |
| 314 | </div> |
| 315 | <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher |
| 316 | _8c.html" target="source" name="PasskeyDecipherImage">PasskeyDecipherImage</a></h2> |
| 317 | <div class="doc-section"> |
| 318 | |
| 319 | <p>PasskeyDecipherImage() converts cipher pixels to plain pixels.</p></ol> |
| 320 | |
| 321 | <p>The format of the PasskeyDecipherImage method is:</p> |
| 322 | |
| 323 | <pre class="code"> |
| 324 | MagickBooleanType PasskeyDecipherImage(Image *image, |
| 325 | const StringInfo *passkey,ExceptionInfo *exception) |
| 326 | MagickBooleanType DecipherImage(Image *image,const char *passphrase, |
| 327 | ExceptionInfo *exception) |
| 328 | </pre> |
| 329 | |
| 330 | <p>A description of each parameter follows:</p></ol> |
| 331 | |
| 332 | <h5>image</h5> |
| 333 | <ol><p>the image.</p></ol> |
| 334 | |
| 335 | <h5>passphrase</h5> |
| 336 | <ol><p>decipher cipher pixels with this passphrase.</p></ol> |
| 337 | |
| 338 | <h5>passkey</h5> |
| 339 | <ol><p>decrypt cipher pixels with this passkey.</p></ol> |
| 340 | |
| 341 | <h5>exception</h5> |
| 342 | <ol><p>return any errors or warnings in this structure.</p></ol> |
| 343 | |
| 344 | </div> |
| 345 | <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher |
| 346 | _8c.html" target="source" name="PasskeyEncipherImage">PasskeyEncipherImage</a></h2> |
| 347 | <div class="doc-section"> |
| 348 | |
| 349 | <p>PasskeyEncipherImage() converts pixels to cipher-pixels.</p></ol> |
| 350 | |
| 351 | <p>The format of the PasskeyEncipherImage method is:</p> |
| 352 | |
| 353 | <pre class="code"> |
| 354 | MagickBooleanType PasskeyEncipherImage(Image *image, |
| 355 | const StringInfo *passkey,ExceptionInfo *exception) |
| 356 | MagickBooleanType EncipherImage(Image *image,const char *passphrase, |
| 357 | ExceptionInfo *exception) |
| 358 | </pre> |
| 359 | |
| 360 | <p>A description of each parameter follows:</p></ol> |
| 361 | |
| 362 | <h5>passphrase</h5> |
| 363 | <ol><p>decipher cipher pixels with this passphrase.</p></ol> |
| 364 | |
| 365 | <h5>passkey</h5> |
| 366 | <ol><p>decrypt cipher pixels with this passkey.</p></ol> |
| 367 | |
| 368 | <h5>exception</h5> |
| 369 | <ol><p>return any errors or warnings in this structure.</p></ol> |
| 370 | |
| 371 | </div> |
cristy | 3eaa0ef | 2010-03-06 20:35:26 +0000 | [diff] [blame] | 372 |
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