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11 <title>ImageMagick: MagickCore, C API for ImageMagick: Convert to and from Cipher Pixels</title>
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148 <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>
150 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
151 _8c.html" target="source" name="AcquireAESInfo">AcquireAESInfo</a></h2>
152 <div class="doc-section">
154 <p>AcquireAESInfo() allocate the AESInfo structure.</p></ol>
156 <p>The format of the AcquireAESInfo method is:</p>
159 AESInfo *AcquireAESInfo(void)
163 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
164 _8c.html" target="source" name="DestroyAESInfo">DestroyAESInfo</a></h2>
165 <div class="doc-section">
167 <p>DestroyAESInfo() zeros memory associated with the AESInfo structure.</p></ol>
169 <p>The format of the DestroyAESInfo method is:</p>
172 AESInfo *DestroyAESInfo(AESInfo *aes_info)
175 <p>A description of each parameter follows:</p></ol>
178 <ol><p>the cipher context.</p></ol>
181 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
182 _8c.html" target="source" name="EncipherAESBlock">EncipherAESBlock</a></h2>
183 <div class="doc-section">
185 <p>EncipherAESBlock() enciphers a single block of plaintext to produce a block of ciphertext.</p></ol>
187 <p>The format of the EncipherAESBlock method is:</p>
190 void EncipherAES(AESInfo *aes_info,const unsigned char *plaintext,
191 unsigned char *ciphertext)
194 <p>A description of each parameter follows:</p></ol>
197 <ol><p>the cipher context.</p></ol>
200 <ol><p>the plain text.</p></ol>
203 <ol><p>the cipher text.</p></ol>
206 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
207 _8c.html" target="source" name="PasskeyDecipherImage">PasskeyDecipherImage</a></h2>
208 <div class="doc-section">
210 <p>PasskeyDecipherImage() converts cipher pixels to plain pixels.</p></ol>
212 <p>The format of the PasskeyDecipherImage method is:</p>
215 MagickBooleanType PasskeyDecipherImage(Image *image,
216 const StringInfo *passkey,ExceptionInfo *exception)
217 MagickBooleanType DecipherImage(Image *image,const char *passphrase,
218 ExceptionInfo *exception)
221 <p>A description of each parameter follows:</p></ol>
224 <ol><p>the image.</p></ol>
227 <ol><p>decipher cipher pixels with this passphrase.</p></ol>
230 <ol><p>decrypt cipher pixels with this passkey.</p></ol>
233 <ol><p>return any errors or warnings in this structure.</p></ol>
236 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
237 _8c.html" target="source" name="PasskeyEncipherImage">PasskeyEncipherImage</a></h2>
238 <div class="doc-section">
240 <p>PasskeyEncipherImage() converts pixels to cipher-pixels.</p></ol>
242 <p>The format of the PasskeyEncipherImage method is:</p>
245 MagickBooleanType PasskeyEncipherImage(Image *image,
246 const StringInfo *passkey,ExceptionInfo *exception)
247 MagickBooleanType EncipherImage(Image *image,const char *passphrase,
248 ExceptionInfo *exception)
251 <p>A description of each parameter follows:</p></ol>
254 <ol><p>the image.</p></ol>
257 <ol><p>encipher pixels with this passphrase.</p></ol>
260 <ol><p>decrypt cipher pixels with this passkey.</p></ol>
263 <ol><p>return any errors or warnings in this structure.</p></ol>
266 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
267 _8c.html" target="source" name="SetAESKey">SetAESKey</a></h2>
268 <div class="doc-section">
270 <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>
272 <p>The format of the SetAESKey method is:</p>
275 SetAESKey(AESInfo *aes_info,const StringInfo *key)
278 <p>A description of each parameter follows:</p></ol>
281 <ol><p>the cipher context.</p></ol>
284 <ol><p>the key.</p></ol>
287 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
288 _8c.html" target="source" name="PasskeyDecipherImage">PasskeyDecipherImage</a></h2>
289 <div class="doc-section">
291 <p>PasskeyDecipherImage() converts cipher pixels to plain pixels.</p></ol>
293 <p>The format of the PasskeyDecipherImage method is:</p>
296 MagickBooleanType PasskeyDecipherImage(Image *image,
297 const StringInfo *passkey,ExceptionInfo *exception)
298 MagickBooleanType DecipherImage(Image *image,const char *passphrase,
299 ExceptionInfo *exception)
302 <p>A description of each parameter follows:</p></ol>
305 <ol><p>the image.</p></ol>
308 <ol><p>decipher cipher pixels with this passphrase.</p></ol>
311 <ol><p>decrypt cipher pixels with this passkey.</p></ol>
314 <ol><p>return any errors or warnings in this structure.</p></ol>
317 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
318 _8c.html" target="source" name="PasskeyEncipherImage">PasskeyEncipherImage</a></h2>
319 <div class="doc-section">
321 <p>PasskeyEncipherImage() converts pixels to cipher-pixels.</p></ol>
323 <p>The format of the PasskeyEncipherImage method is:</p>
326 MagickBooleanType PasskeyEncipherImage(Image *image,
327 const StringInfo *passkey,ExceptionInfo *exception)
328 MagickBooleanType EncipherImage(Image *image,const char *passphrase,
329 ExceptionInfo *exception)
332 <p>A description of each parameter follows:</p></ol>
335 <ol><p>decipher cipher pixels with this passphrase.</p></ol>
338 <ol><p>decrypt cipher pixels with this passkey.</p></ol>
341 <ol><p>return any errors or warnings in this structure.</p></ol>
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