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175
176<div class="main">
177
cristy307ba182010-12-25 01:00:34 +0000[diff] [blame]178<h1>Module cipher
179 Methods</h1>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]180<p class="navigation-index">[<a href="#AcquireAESInfo">AcquireAESInfo</a> &bull; <a href="#DestroyAESInfo">DestroyAESInfo</a> &bull; <a href="#EncipherAESBlock">EncipherAESBlock</a> &bull; <a href="#PasskeyDecipherImage">PasskeyDecipherImage</a> &bull; <a href="#PasskeyEncipherImage">PasskeyEncipherImage</a> &bull; <a href="#SetAESKey">SetAESKey</a> &bull; <a href="#PasskeyDecipherImage">PasskeyDecipherImage</a> &bull; <a href="#PasskeyEncipherImage">PasskeyEncipherImage</a>]</p>
181
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]182<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/cipher
183_8c.html" id="AcquireAESInfo">AcquireAESInfo</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]184<div class="doc-section">
185
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]186<p>AcquireAESInfo() allocate the AESInfo structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]187
188<p>The format of the AcquireAESInfo method is:</p>
189
190<pre class="code">
191 AESInfo *AcquireAESInfo(void)
192</pre>
193
194 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]195<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/cipher
196_8c.html" id="DestroyAESInfo">DestroyAESInfo</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]197<div class="doc-section">
198
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]199<p>DestroyAESInfo() zeros memory associated with the AESInfo structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]200
201<p>The format of the DestroyAESInfo method is:</p>
202
203<pre class="code">
204 AESInfo *DestroyAESInfo(AESInfo *aes_info)
205</pre>
206
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]207<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]208
209<h5>aes_info</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]210<p>the cipher context.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]211
212 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]213<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/cipher
214_8c.html" id="EncipherAESBlock">EncipherAESBlock</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]215<div class="doc-section">
216
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]217<p>EncipherAESBlock() enciphers a single block of plaintext to produce a block of ciphertext.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]218
219<p>The format of the EncipherAESBlock method is:</p>
220
221<pre class="code">
222 void EncipherAES(AESInfo *aes_info,const unsigned char *plaintext,
223 unsigned char *ciphertext)
224</pre>
225
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]226<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]227
228<h5>aes_info</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]229<p>the cipher context.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]230
231<h5>plaintext</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]232<p>the plain text.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]233
234<h5>ciphertext</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]235<p>the cipher text.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]236
237 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]238<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/cipher
239_8c.html" id="PasskeyDecipherImage">PasskeyDecipherImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]240<div class="doc-section">
241
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]242<p>PasskeyDecipherImage() converts cipher pixels to plain pixels.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]243
244<p>The format of the PasskeyDecipherImage method is:</p>
245
246<pre class="code">
247 MagickBooleanType PasskeyDecipherImage(Image *image,
248 const StringInfo *passkey,ExceptionInfo *exception)
249 MagickBooleanType DecipherImage(Image *image,const char *passphrase,
250 ExceptionInfo *exception)
251</pre>
252
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]253<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]254
255<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]256<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]257
258<h5>passphrase</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]259<p>decipher cipher pixels with this passphrase.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]260
261<h5>passkey</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]262<p>decrypt cipher pixels with this passkey.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]263
264<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]265<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]266
267 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]268<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/cipher
269_8c.html" id="PasskeyEncipherImage">PasskeyEncipherImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]270<div class="doc-section">
271
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]272<p>PasskeyEncipherImage() converts pixels to cipher-pixels.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]273
274<p>The format of the PasskeyEncipherImage method is:</p>
275
276<pre class="code">
277 MagickBooleanType PasskeyEncipherImage(Image *image,
278 const StringInfo *passkey,ExceptionInfo *exception)
279 MagickBooleanType EncipherImage(Image *image,const char *passphrase,
280 ExceptionInfo *exception)
281</pre>
282
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]283<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]284
285<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]286<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]287
288<h5>passphrase</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]289<p>encipher pixels with this passphrase.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]290
291<h5>passkey</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]292<p>decrypt cipher pixels with this passkey.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]293
294<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]295<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]296
297 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]298<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/cipher
299_8c.html" id="SetAESKey">SetAESKey</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]300<div class="doc-section">
301
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]302<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>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]303
304<p>The format of the SetAESKey method is:</p>
305
306<pre class="code">
307 SetAESKey(AESInfo *aes_info,const StringInfo *key)
308</pre>
309
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]310<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]311
312<h5>aes_info</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]313<p>the cipher context.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]314
315<h5>key</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]316<p>the key.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]317
318 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]319<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/cipher
320_8c.html" id="PasskeyDecipherImage">PasskeyDecipherImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]321<div class="doc-section">
322
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]323<p>PasskeyDecipherImage() converts cipher pixels to plain pixels.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]324
325<p>The format of the PasskeyDecipherImage method is:</p>
326
327<pre class="code">
328 MagickBooleanType PasskeyDecipherImage(Image *image,
329 const StringInfo *passkey,ExceptionInfo *exception)
330 MagickBooleanType DecipherImage(Image *image,const char *passphrase,
331 ExceptionInfo *exception)
332</pre>
333
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]334<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]335
336<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]337<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]338
339<h5>passphrase</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]340<p>decipher cipher pixels with this passphrase.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]341
342<h5>passkey</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]343<p>decrypt cipher pixels with this passkey.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]344
345<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]346<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]347
348 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]349<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/cipher
350_8c.html" id="PasskeyEncipherImage">PasskeyEncipherImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]351<div class="doc-section">
352
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]353<p>PasskeyEncipherImage() converts pixels to cipher-pixels.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]354
355<p>The format of the PasskeyEncipherImage method is:</p>
356
357<pre class="code">
358 MagickBooleanType PasskeyEncipherImage(Image *image,
359 const StringInfo *passkey,ExceptionInfo *exception)
360 MagickBooleanType EncipherImage(Image *image,const char *passphrase,
361 ExceptionInfo *exception)
362</pre>
363
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]364<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]365
366<h5>passphrase</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]367<p>decipher cipher pixels with this passphrase.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]368
369<h5>passkey</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]370<p>decrypt cipher pixels with this passkey.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]371
372<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]373<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]374
375 </div>
cristy3eaa0ef2010-03-06 20:35:26 +0000[diff] [blame]376
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