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196 <h1>Module cipher Methods</h1>
197 <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>
199 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher_8c.html" id="AcquireAESInfo">AcquireAESInfo</a></h2>
200 <div class="doc-section">
202 <p>AcquireAESInfo() allocate the AESInfo structure.</p>
204 <p>The format of the AcquireAESInfo method is:</p>
207 AESInfo *AcquireAESInfo(void)
211 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher_8c.html" id="DestroyAESInfo">DestroyAESInfo</a></h2>
212 <div class="doc-section">
214 <p>DestroyAESInfo() zeros memory associated with the AESInfo structure.</p>
216 <p>The format of the DestroyAESInfo method is:</p>
219 AESInfo *DestroyAESInfo(AESInfo *aes_info)
222 <p>A description of each parameter follows:</p>
225 <p>the cipher context.</p>
228 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher_8c.html" id="EncipherAESBlock">EncipherAESBlock</a></h2>
229 <div class="doc-section">
231 <p>EncipherAESBlock() enciphers a single block of plaintext to produce a block of ciphertext.</p>
233 <p>The format of the EncipherAESBlock method is:</p>
236 void EncipherAES(AESInfo *aes_info,const unsigned char *plaintext,
237 unsigned char *ciphertext)
240 <p>A description of each parameter follows:</p>
243 <p>the cipher context.</p>
246 <p>the plain text.</p>
249 <p>the cipher text.</p>
252 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher_8c.html" id="PasskeyDecipherImage">PasskeyDecipherImage</a></h2>
253 <div class="doc-section">
255 <p>PasskeyDecipherImage() converts cipher pixels to plain pixels.</p>
257 <p>The format of the PasskeyDecipherImage method is:</p>
260 MagickBooleanType PasskeyDecipherImage(Image *image,
261 const StringInfo *passkey,ExceptionInfo *exception)
262 MagickBooleanType DecipherImage(Image *image,const char *passphrase,
263 ExceptionInfo *exception)
266 <p>A description of each parameter follows:</p>
272 <p>decipher cipher pixels with this passphrase.</p>
275 <p>decrypt cipher pixels with this passkey.</p>
278 <p>return any errors or warnings in this structure.</p>
281 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher_8c.html" id="PasskeyEncipherImage">PasskeyEncipherImage</a></h2>
282 <div class="doc-section">
284 <p>PasskeyEncipherImage() converts pixels to cipher-pixels.</p>
286 <p>The format of the PasskeyEncipherImage method is:</p>
289 MagickBooleanType PasskeyEncipherImage(Image *image,
290 const StringInfo *passkey,ExceptionInfo *exception)
291 MagickBooleanType EncipherImage(Image *image,const char *passphrase,
292 ExceptionInfo *exception)
295 <p>A description of each parameter follows:</p>
301 <p>encipher pixels with this passphrase.</p>
304 <p>decrypt cipher pixels with this passkey.</p>
307 <p>return any errors or warnings in this structure.</p>
310 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher_8c.html" id="SetAESKey">SetAESKey</a></h2>
311 <div class="doc-section">
313 <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>
315 <p>The format of the SetAESKey method is:</p>
318 SetAESKey(AESInfo *aes_info,const StringInfo *key)
321 <p>A description of each parameter follows:</p>
324 <p>the cipher context.</p>
330 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher_8c.html" id="PasskeyDecipherImage">PasskeyDecipherImage</a></h2>
331 <div class="doc-section">
333 <p>PasskeyDecipherImage() converts cipher pixels to plain pixels.</p>
335 <p>The format of the PasskeyDecipherImage method is:</p>
338 MagickBooleanType PasskeyDecipherImage(Image *image,
339 const StringInfo *passkey,ExceptionInfo *exception)
340 MagickBooleanType DecipherImage(Image *image,const char *passphrase,
341 ExceptionInfo *exception)
344 <p>A description of each parameter follows:</p>
350 <p>decipher cipher pixels with this passphrase.</p>
353 <p>decrypt cipher pixels with this passkey.</p>
356 <p>return any errors or warnings in this structure.</p>
359 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher_8c.html" id="PasskeyEncipherImage">PasskeyEncipherImage</a></h2>
360 <div class="doc-section">
362 <p>PasskeyEncipherImage() converts pixels to cipher-pixels.</p>
364 <p>The format of the PasskeyEncipherImage method is:</p>
367 MagickBooleanType PasskeyEncipherImage(Image *image,
368 const StringInfo *passkey,ExceptionInfo *exception)
369 MagickBooleanType EncipherImage(Image *image,const char *passphrase,
370 ExceptionInfo *exception)
373 <p>A description of each parameter follows:</p>
376 <p>decipher cipher pixels with this passphrase.</p>
379 <p>decrypt cipher pixels with this passkey.</p>
382 <p>return any errors or warnings in this structure.</p>
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