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12 <title>ImageMagick: MagickCore, C API for ImageMagick: Convert to and from Cipher Pixels</title>
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155 <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>
157 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
158 _8c.html" target="source" name="AcquireAESInfo">AcquireAESInfo</a></h2>
159 <div class="doc-section">
161 <p>AcquireAESInfo() allocate the AESInfo structure.</p></ol>
163 <p>The format of the AcquireAESInfo method is:</p>
166 AESInfo *AcquireAESInfo(void)
170 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
171 _8c.html" target="source" name="DestroyAESInfo">DestroyAESInfo</a></h2>
172 <div class="doc-section">
174 <p>DestroyAESInfo() zeros memory associated with the AESInfo structure.</p></ol>
176 <p>The format of the DestroyAESInfo method is:</p>
179 AESInfo *DestroyAESInfo(AESInfo *aes_info)
182 <p>A description of each parameter follows:</p></ol>
185 <ol><p>the cipher context.</p></ol>
188 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
189 _8c.html" target="source" name="EncipherAESBlock">EncipherAESBlock</a></h2>
190 <div class="doc-section">
192 <p>EncipherAESBlock() enciphers a single block of plaintext to produce a block of ciphertext.</p></ol>
194 <p>The format of the EncipherAESBlock method is:</p>
197 void EncipherAES(AESInfo *aes_info,const unsigned char *plaintext,
198 unsigned char *ciphertext)
201 <p>A description of each parameter follows:</p></ol>
204 <ol><p>the cipher context.</p></ol>
207 <ol><p>the plain text.</p></ol>
210 <ol><p>the cipher text.</p></ol>
213 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
214 _8c.html" target="source" name="PasskeyDecipherImage">PasskeyDecipherImage</a></h2>
215 <div class="doc-section">
217 <p>PasskeyDecipherImage() converts cipher pixels to plain pixels.</p></ol>
219 <p>The format of the PasskeyDecipherImage method is:</p>
222 MagickBooleanType PasskeyDecipherImage(Image *image,
223 const StringInfo *passkey,ExceptionInfo *exception)
224 MagickBooleanType DecipherImage(Image *image,const char *passphrase,
225 ExceptionInfo *exception)
228 <p>A description of each parameter follows:</p></ol>
231 <ol><p>the image.</p></ol>
234 <ol><p>decipher cipher pixels with this passphrase.</p></ol>
237 <ol><p>decrypt cipher pixels with this passkey.</p></ol>
240 <ol><p>return any errors or warnings in this structure.</p></ol>
243 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
244 _8c.html" target="source" name="PasskeyEncipherImage">PasskeyEncipherImage</a></h2>
245 <div class="doc-section">
247 <p>PasskeyEncipherImage() converts pixels to cipher-pixels.</p></ol>
249 <p>The format of the PasskeyEncipherImage method is:</p>
252 MagickBooleanType PasskeyEncipherImage(Image *image,
253 const StringInfo *passkey,ExceptionInfo *exception)
254 MagickBooleanType EncipherImage(Image *image,const char *passphrase,
255 ExceptionInfo *exception)
258 <p>A description of each parameter follows:</p></ol>
261 <ol><p>the image.</p></ol>
264 <ol><p>encipher pixels with this passphrase.</p></ol>
267 <ol><p>decrypt cipher pixels with this passkey.</p></ol>
270 <ol><p>return any errors or warnings in this structure.</p></ol>
273 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
274 _8c.html" target="source" name="SetAESKey">SetAESKey</a></h2>
275 <div class="doc-section">
277 <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>
279 <p>The format of the SetAESKey method is:</p>
282 SetAESKey(AESInfo *aes_info,const StringInfo *key)
285 <p>A description of each parameter follows:</p></ol>
288 <ol><p>the cipher context.</p></ol>
291 <ol><p>the key.</p></ol>
294 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
295 _8c.html" target="source" name="PasskeyDecipherImage">PasskeyDecipherImage</a></h2>
296 <div class="doc-section">
298 <p>PasskeyDecipherImage() converts cipher pixels to plain pixels.</p></ol>
300 <p>The format of the PasskeyDecipherImage method is:</p>
303 MagickBooleanType PasskeyDecipherImage(Image *image,
304 const StringInfo *passkey,ExceptionInfo *exception)
305 MagickBooleanType DecipherImage(Image *image,const char *passphrase,
306 ExceptionInfo *exception)
309 <p>A description of each parameter follows:</p></ol>
312 <ol><p>the image.</p></ol>
315 <ol><p>decipher cipher pixels with this passphrase.</p></ol>
318 <ol><p>decrypt cipher pixels with this passkey.</p></ol>
321 <ol><p>return any errors or warnings in this structure.</p></ol>
324 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
325 _8c.html" target="source" name="PasskeyEncipherImage">PasskeyEncipherImage</a></h2>
326 <div class="doc-section">
328 <p>PasskeyEncipherImage() converts pixels to cipher-pixels.</p></ol>
330 <p>The format of the PasskeyEncipherImage method is:</p>
333 MagickBooleanType PasskeyEncipherImage(Image *image,
334 const StringInfo *passkey,ExceptionInfo *exception)
335 MagickBooleanType EncipherImage(Image *image,const char *passphrase,
336 ExceptionInfo *exception)
339 <p>A description of each parameter follows:</p></ol>
342 <ol><p>decipher cipher pixels with this passphrase.</p></ol>
345 <ol><p>decrypt cipher pixels with this passkey.</p></ol>
348 <ol><p>return any errors or warnings in this structure.</p></ol>
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