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11 <title>ImageMagick: MagickCore, C API for ImageMagick: Convert to and from Cipher Pixels</title>
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154 <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>
156 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
157 _8c.html" target="source" name="AcquireAESInfo">AcquireAESInfo</a></h2>
158 <div class="doc-section">
160 <p>AcquireAESInfo() allocate the AESInfo structure.</p></ol>
162 <p>The format of the AcquireAESInfo method is:</p>
165 AESInfo *AcquireAESInfo(void)
169 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
170 _8c.html" target="source" name="DestroyAESInfo">DestroyAESInfo</a></h2>
171 <div class="doc-section">
173 <p>DestroyAESInfo() zeros memory associated with the AESInfo structure.</p></ol>
175 <p>The format of the DestroyAESInfo method is:</p>
178 AESInfo *DestroyAESInfo(AESInfo *aes_info)
181 <p>A description of each parameter follows:</p></ol>
184 <ol><p>the cipher context.</p></ol>
187 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
188 _8c.html" target="source" name="EncipherAESBlock">EncipherAESBlock</a></h2>
189 <div class="doc-section">
191 <p>EncipherAESBlock() enciphers a single block of plaintext to produce a block of ciphertext.</p></ol>
193 <p>The format of the EncipherAESBlock method is:</p>
196 void EncipherAES(AESInfo *aes_info,const unsigned char *plaintext,
197 unsigned char *ciphertext)
200 <p>A description of each parameter follows:</p></ol>
203 <ol><p>the cipher context.</p></ol>
206 <ol><p>the plain text.</p></ol>
209 <ol><p>the cipher text.</p></ol>
212 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
213 _8c.html" target="source" name="PasskeyDecipherImage">PasskeyDecipherImage</a></h2>
214 <div class="doc-section">
216 <p>PasskeyDecipherImage() converts cipher pixels to plain pixels.</p></ol>
218 <p>The format of the PasskeyDecipherImage method is:</p>
221 MagickBooleanType PasskeyDecipherImage(Image *image,
222 const StringInfo *passkey,ExceptionInfo *exception)
223 MagickBooleanType DecipherImage(Image *image,const char *passphrase,
224 ExceptionInfo *exception)
227 <p>A description of each parameter follows:</p></ol>
230 <ol><p>the image.</p></ol>
233 <ol><p>decipher cipher pixels with this passphrase.</p></ol>
236 <ol><p>decrypt cipher pixels with this passkey.</p></ol>
239 <ol><p>return any errors or warnings in this structure.</p></ol>
242 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
243 _8c.html" target="source" name="PasskeyEncipherImage">PasskeyEncipherImage</a></h2>
244 <div class="doc-section">
246 <p>PasskeyEncipherImage() converts pixels to cipher-pixels.</p></ol>
248 <p>The format of the PasskeyEncipherImage method is:</p>
251 MagickBooleanType PasskeyEncipherImage(Image *image,
252 const StringInfo *passkey,ExceptionInfo *exception)
253 MagickBooleanType EncipherImage(Image *image,const char *passphrase,
254 ExceptionInfo *exception)
257 <p>A description of each parameter follows:</p></ol>
260 <ol><p>the image.</p></ol>
263 <ol><p>encipher pixels with this passphrase.</p></ol>
266 <ol><p>decrypt cipher pixels with this passkey.</p></ol>
269 <ol><p>return any errors or warnings in this structure.</p></ol>
272 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
273 _8c.html" target="source" name="SetAESKey">SetAESKey</a></h2>
274 <div class="doc-section">
276 <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>
278 <p>The format of the SetAESKey method is:</p>
281 SetAESKey(AESInfo *aes_info,const StringInfo *key)
284 <p>A description of each parameter follows:</p></ol>
287 <ol><p>the cipher context.</p></ol>
290 <ol><p>the key.</p></ol>
293 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
294 _8c.html" target="source" name="PasskeyDecipherImage">PasskeyDecipherImage</a></h2>
295 <div class="doc-section">
297 <p>PasskeyDecipherImage() converts cipher pixels to plain pixels.</p></ol>
299 <p>The format of the PasskeyDecipherImage method is:</p>
302 MagickBooleanType PasskeyDecipherImage(Image *image,
303 const StringInfo *passkey,ExceptionInfo *exception)
304 MagickBooleanType DecipherImage(Image *image,const char *passphrase,
305 ExceptionInfo *exception)
308 <p>A description of each parameter follows:</p></ol>
311 <ol><p>the image.</p></ol>
314 <ol><p>decipher cipher pixels with this passphrase.</p></ol>
317 <ol><p>decrypt cipher pixels with this passkey.</p></ol>
320 <ol><p>return any errors or warnings in this structure.</p></ol>
323 <h2><a href="http://www.imagemagick.org/api/MagickCore/cipher
324 _8c.html" target="source" name="PasskeyEncipherImage">PasskeyEncipherImage</a></h2>
325 <div class="doc-section">
327 <p>PasskeyEncipherImage() converts pixels to cipher-pixels.</p></ol>
329 <p>The format of the PasskeyEncipherImage method is:</p>
332 MagickBooleanType PasskeyEncipherImage(Image *image,
333 const StringInfo *passkey,ExceptionInfo *exception)
334 MagickBooleanType EncipherImage(Image *image,const char *passphrase,
335 ExceptionInfo *exception)
338 <p>A description of each parameter follows:</p></ol>
341 <ol><p>decipher cipher pixels with this passphrase.</p></ol>
344 <ol><p>decrypt cipher pixels with this passkey.</p></ol>
347 <ol><p>return any errors or warnings in this structure.</p></ol>
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