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11 <title>ImageMagick: MagickCore, C API for ImageMagick: Convert to and from Cipher Pixels</title>
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151 <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>
153 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
154 _8c.html" target="source" name="AcquireAESInfo">AcquireAESInfo</a></h2>
155 <div class="doc-section">
157 <p>AcquireAESInfo() allocate the AESInfo structure.</p></ol>
159 <p>The format of the AcquireAESInfo method is:</p>
162 AESInfo *AcquireAESInfo(void)
166 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
167 _8c.html" target="source" name="DestroyAESInfo">DestroyAESInfo</a></h2>
168 <div class="doc-section">
170 <p>DestroyAESInfo() zeros memory associated with the AESInfo structure.</p></ol>
172 <p>The format of the DestroyAESInfo method is:</p>
175 AESInfo *DestroyAESInfo(AESInfo *aes_info)
178 <p>A description of each parameter follows:</p></ol>
181 <ol><p>the cipher context.</p></ol>
184 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
185 _8c.html" target="source" name="EncipherAESBlock">EncipherAESBlock</a></h2>
186 <div class="doc-section">
188 <p>EncipherAESBlock() enciphers a single block of plaintext to produce a block of ciphertext.</p></ol>
190 <p>The format of the EncipherAESBlock method is:</p>
193 void EncipherAES(AESInfo *aes_info,const unsigned char *plaintext,
194 unsigned char *ciphertext)
197 <p>A description of each parameter follows:</p></ol>
200 <ol><p>the cipher context.</p></ol>
203 <ol><p>the plain text.</p></ol>
206 <ol><p>the cipher text.</p></ol>
209 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
210 _8c.html" target="source" name="PasskeyDecipherImage">PasskeyDecipherImage</a></h2>
211 <div class="doc-section">
213 <p>PasskeyDecipherImage() converts cipher pixels to plain pixels.</p></ol>
215 <p>The format of the PasskeyDecipherImage method is:</p>
218 MagickBooleanType PasskeyDecipherImage(Image *image,
219 const StringInfo *passkey,ExceptionInfo *exception)
220 MagickBooleanType DecipherImage(Image *image,const char *passphrase,
221 ExceptionInfo *exception)
224 <p>A description of each parameter follows:</p></ol>
227 <ol><p>the image.</p></ol>
230 <ol><p>decipher cipher pixels with this passphrase.</p></ol>
233 <ol><p>decrypt cipher pixels with this passkey.</p></ol>
236 <ol><p>return any errors or warnings in this structure.</p></ol>
239 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
240 _8c.html" target="source" name="PasskeyEncipherImage">PasskeyEncipherImage</a></h2>
241 <div class="doc-section">
243 <p>PasskeyEncipherImage() converts pixels to cipher-pixels.</p></ol>
245 <p>The format of the PasskeyEncipherImage method is:</p>
248 MagickBooleanType PasskeyEncipherImage(Image *image,
249 const StringInfo *passkey,ExceptionInfo *exception)
250 MagickBooleanType EncipherImage(Image *image,const char *passphrase,
251 ExceptionInfo *exception)
254 <p>A description of each parameter follows:</p></ol>
257 <ol><p>the image.</p></ol>
260 <ol><p>encipher pixels with this passphrase.</p></ol>
263 <ol><p>decrypt cipher pixels with this passkey.</p></ol>
266 <ol><p>return any errors or warnings in this structure.</p></ol>
269 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
270 _8c.html" target="source" name="SetAESKey">SetAESKey</a></h2>
271 <div class="doc-section">
273 <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>
275 <p>The format of the SetAESKey method is:</p>
278 SetAESKey(AESInfo *aes_info,const StringInfo *key)
281 <p>A description of each parameter follows:</p></ol>
284 <ol><p>the cipher context.</p></ol>
287 <ol><p>the key.</p></ol>
290 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
291 _8c.html" target="source" name="PasskeyDecipherImage">PasskeyDecipherImage</a></h2>
292 <div class="doc-section">
294 <p>PasskeyDecipherImage() converts cipher pixels to plain pixels.</p></ol>
296 <p>The format of the PasskeyDecipherImage method is:</p>
299 MagickBooleanType PasskeyDecipherImage(Image *image,
300 const StringInfo *passkey,ExceptionInfo *exception)
301 MagickBooleanType DecipherImage(Image *image,const char *passphrase,
302 ExceptionInfo *exception)
305 <p>A description of each parameter follows:</p></ol>
308 <ol><p>the image.</p></ol>
311 <ol><p>decipher cipher pixels with this passphrase.</p></ol>
314 <ol><p>decrypt cipher pixels with this passkey.</p></ol>
317 <ol><p>return any errors or warnings in this structure.</p></ol>
320 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
321 _8c.html" target="source" name="PasskeyEncipherImage">PasskeyEncipherImage</a></h2>
322 <div class="doc-section">
324 <p>PasskeyEncipherImage() converts pixels to cipher-pixels.</p></ol>
326 <p>The format of the PasskeyEncipherImage method is:</p>
329 MagickBooleanType PasskeyEncipherImage(Image *image,
330 const StringInfo *passkey,ExceptionInfo *exception)
331 MagickBooleanType EncipherImage(Image *image,const char *passphrase,
332 ExceptionInfo *exception)
335 <p>A description of each parameter follows:</p></ol>
338 <ol><p>decipher cipher pixels with this passphrase.</p></ol>
341 <ol><p>decrypt cipher pixels with this passkey.</p></ol>
344 <ol><p>return any errors or warnings in this structure.</p></ol>
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