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12 <title>ImageMagick: MagickCore, C API for ImageMagick: Convert to and from Cipher Pixels</title>
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158 <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>
160 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
161 _8c.html" target="source" name="AcquireAESInfo">AcquireAESInfo</a></h2>
162 <div class="doc-section">
164 <p>AcquireAESInfo() allocate the AESInfo structure.</p></ol>
166 <p>The format of the AcquireAESInfo method is:</p>
169 AESInfo *AcquireAESInfo(void)
173 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
174 _8c.html" target="source" name="DestroyAESInfo">DestroyAESInfo</a></h2>
175 <div class="doc-section">
177 <p>DestroyAESInfo() zeros memory associated with the AESInfo structure.</p></ol>
179 <p>The format of the DestroyAESInfo method is:</p>
182 AESInfo *DestroyAESInfo(AESInfo *aes_info)
185 <p>A description of each parameter follows:</p></ol>
188 <ol><p>the cipher context.</p></ol>
191 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
192 _8c.html" target="source" name="EncipherAESBlock">EncipherAESBlock</a></h2>
193 <div class="doc-section">
195 <p>EncipherAESBlock() enciphers a single block of plaintext to produce a block of ciphertext.</p></ol>
197 <p>The format of the EncipherAESBlock method is:</p>
200 void EncipherAES(AESInfo *aes_info,const unsigned char *plaintext,
201 unsigned char *ciphertext)
204 <p>A description of each parameter follows:</p></ol>
207 <ol><p>the cipher context.</p></ol>
210 <ol><p>the plain text.</p></ol>
213 <ol><p>the cipher text.</p></ol>
216 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
217 _8c.html" target="source" name="PasskeyDecipherImage">PasskeyDecipherImage</a></h2>
218 <div class="doc-section">
220 <p>PasskeyDecipherImage() converts cipher pixels to plain pixels.</p></ol>
222 <p>The format of the PasskeyDecipherImage method is:</p>
225 MagickBooleanType PasskeyDecipherImage(Image *image,
226 const StringInfo *passkey,ExceptionInfo *exception)
227 MagickBooleanType DecipherImage(Image *image,const char *passphrase,
228 ExceptionInfo *exception)
231 <p>A description of each parameter follows:</p></ol>
234 <ol><p>the image.</p></ol>
237 <ol><p>decipher cipher pixels with this passphrase.</p></ol>
240 <ol><p>decrypt cipher pixels with this passkey.</p></ol>
243 <ol><p>return any errors or warnings in this structure.</p></ol>
246 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
247 _8c.html" target="source" name="PasskeyEncipherImage">PasskeyEncipherImage</a></h2>
248 <div class="doc-section">
250 <p>PasskeyEncipherImage() converts pixels to cipher-pixels.</p></ol>
252 <p>The format of the PasskeyEncipherImage method is:</p>
255 MagickBooleanType PasskeyEncipherImage(Image *image,
256 const StringInfo *passkey,ExceptionInfo *exception)
257 MagickBooleanType EncipherImage(Image *image,const char *passphrase,
258 ExceptionInfo *exception)
261 <p>A description of each parameter follows:</p></ol>
264 <ol><p>the image.</p></ol>
267 <ol><p>encipher pixels with this passphrase.</p></ol>
270 <ol><p>decrypt cipher pixels with this passkey.</p></ol>
273 <ol><p>return any errors or warnings in this structure.</p></ol>
276 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
277 _8c.html" target="source" name="SetAESKey">SetAESKey</a></h2>
278 <div class="doc-section">
280 <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>
282 <p>The format of the SetAESKey method is:</p>
285 SetAESKey(AESInfo *aes_info,const StringInfo *key)
288 <p>A description of each parameter follows:</p></ol>
291 <ol><p>the cipher context.</p></ol>
294 <ol><p>the key.</p></ol>
297 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
298 _8c.html" target="source" name="PasskeyDecipherImage">PasskeyDecipherImage</a></h2>
299 <div class="doc-section">
301 <p>PasskeyDecipherImage() converts cipher pixels to plain pixels.</p></ol>
303 <p>The format of the PasskeyDecipherImage method is:</p>
306 MagickBooleanType PasskeyDecipherImage(Image *image,
307 const StringInfo *passkey,ExceptionInfo *exception)
308 MagickBooleanType DecipherImage(Image *image,const char *passphrase,
309 ExceptionInfo *exception)
312 <p>A description of each parameter follows:</p></ol>
315 <ol><p>the image.</p></ol>
318 <ol><p>decipher cipher pixels with this passphrase.</p></ol>
321 <ol><p>decrypt cipher pixels with this passkey.</p></ol>
324 <ol><p>return any errors or warnings in this structure.</p></ol>
327 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
328 _8c.html" target="source" name="PasskeyEncipherImage">PasskeyEncipherImage</a></h2>
329 <div class="doc-section">
331 <p>PasskeyEncipherImage() converts pixels to cipher-pixels.</p></ol>
333 <p>The format of the PasskeyEncipherImage method is:</p>
336 MagickBooleanType PasskeyEncipherImage(Image *image,
337 const StringInfo *passkey,ExceptionInfo *exception)
338 MagickBooleanType EncipherImage(Image *image,const char *passphrase,
339 ExceptionInfo *exception)
342 <p>A description of each parameter follows:</p></ol>
345 <ol><p>decipher cipher pixels with this passphrase.</p></ol>
348 <ol><p>decrypt cipher pixels with this passkey.</p></ol>
351 <ol><p>return any errors or warnings in this structure.</p></ol>
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