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Edit File: cipher.php
<!DOCTYPE html> <html lang="en"> <head> <meta name="google-site-verification" content="_bMOCDpkx9ZAzBwb2kF3PRHbfUUdFj2uO8Jd1AXArz4" /> <title>ImageMagick: MagickCore, C API for ImageMagick: Convert to and from Cipher Pixels</title> <meta http-equiv="content-type" content="text/html; charset=utf-8"/> <meta name="application-name" content="ImageMagick"/> <meta name="description" content="ImageMagick® is a software suite to create, edit, compose, or convert bitmap images. It can read and write images in a variety of formats (over 200) including PNG, JPEG, JPEG-2000, GIF, WebP, Postscript, PDF, and SVG. 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</script> <nav class="magick-nav"> <a class="magick-nav-item " href="../index.php">Home</a> <a class="magick-nav-item " href="../script/binary-releases.php">Download</a> <a class="magick-nav-item " href="../script/command-line-tools.php">Tools</a> <a class="magick-nav-item " href="../script/command-line-options.php">Options</a> <a class="magick-nav-item " href="../script/resources.php">Resources</a> <a class="magick-nav-item " href="../script/api.php">Develop</a> <a class="magick-nav-item " href="../script/search.php">Search</a> <a class="magick-nav-item pull-right" href="http://www.imagemagick.org/discourse-server/">Community</a> </nav> </div> </div> <div class="container"> <div class="magick-header"> <p class="text-center"><a href="cipher.php#AcquireAESInfo">AcquireAESInfo</a> • <a href="cipher.php#DestroyAESInfo">DestroyAESInfo</a> • <a href="cipher.php#EncipherAESBlock">EncipherAESBlock</a> • <a href="cipher.php#PasskeyDecipherImage">PasskeyDecipherImage</a> • <a href="cipher.php#PasskeyEncipherImage">PasskeyEncipherImage</a> • <a href="cipher.php#SetAESKey">SetAESKey</a> • <a href="cipher.php#PasskeyDecipherImage">PasskeyDecipherImage</a> • <a href="cipher.php#PasskeyEncipherImage">PasskeyEncipherImage</a></p> <h2><a href="http://nextgen.imagemagick.org/api/MagickCore/cipher_8c.html" id="AcquireAESInfo">AcquireAESInfo</a></h2> <p>AcquireAESInfo() allocate the AESInfo structure.</p> <p>The format of the AcquireAESInfo method is:</p> <pre class="text"> AESInfo *AcquireAESInfo(void) </pre> <h2><a href="http://nextgen.imagemagick.org/api/MagickCore/cipher_8c.html" id="DestroyAESInfo">DestroyAESInfo</a></h2> <p>DestroyAESInfo() zeros memory associated with the AESInfo structure.</p> <p>The format of the DestroyAESInfo method is:</p> <pre class="text"> AESInfo *DestroyAESInfo(AESInfo *aes_info) </pre> <p>A description of each parameter follows:</p> <dd> </dd> <dd> </dd> <dl class="dl-horizontal"> <dt>aes_info</dt> <dd>the cipher context. </dd> <dd> </dd> </dl> <h2><a href="http://nextgen.imagemagick.org/api/MagickCore/cipher_8c.html" id="EncipherAESBlock">EncipherAESBlock</a></h2> <p>EncipherAESBlock() enciphers a single block of plaintext to produce a block of ciphertext.</p> <p>The format of the EncipherAESBlock method is:</p> <pre class="text"> void EncipherAES(AESInfo *aes_info,const unsigned char *plaintext, unsigned char *ciphertext) </pre> <p>A description of each parameter follows:</p> <dd> </dd> <dd> </dd> <dl class="dl-horizontal"> <dt>aes_info</dt> <dd>the cipher context. </dd> <dd> </dd> <dt>plaintext</dt> <dd>the plain text. </dd> <dd> </dd> <dt>ciphertext</dt> <dd>the cipher text. </dd> <dd> </dd> </dl> <h2><a href="http://nextgen.imagemagick.org/api/MagickCore/cipher_8c.html" id="PasskeyDecipherImage">PasskeyDecipherImage</a></h2> <p>PasskeyDecipherImage() converts cipher pixels to plain pixels.</p> <p>The format of the PasskeyDecipherImage method is:</p> <pre class="text"> MagickBooleanType PasskeyDecipherImage(Image *image, const StringInfo *passkey,ExceptionInfo *exception) MagickBooleanType DecipherImage(Image *image,const char *passphrase, ExceptionInfo *exception) </pre> <p>A description of each parameter follows:</p> <dd> </dd> <dd> </dd> <dl class="dl-horizontal"> <dt>image</dt> <dd>the image. </dd> <dd> </dd> <dt>passphrase</dt> <dd>decipher cipher pixels with this passphrase. </dd> <dd> </dd> <dt>passkey</dt> <dd>decrypt cipher pixels with this passkey. </dd> <dd> </dd> <dt>exception</dt> <dd>return any errors or warnings in this structure. </dd> <dd> </dd> </dl> <h2><a href="http://nextgen.imagemagick.org/api/MagickCore/cipher_8c.html" id="PasskeyEncipherImage">PasskeyEncipherImage</a></h2> <p>PasskeyEncipherImage() converts pixels to cipher-pixels.</p> <p>The format of the PasskeyEncipherImage method is:</p> <pre class="text"> MagickBooleanType PasskeyEncipherImage(Image *image, const StringInfo *passkey,ExceptionInfo *exception) MagickBooleanType EncipherImage(Image *image,const char *passphrase, ExceptionInfo *exception) </pre> <p>A description of each parameter follows:</p> <dd> </dd> <dd> </dd> <dl class="dl-horizontal"> <dt>image</dt> <dd>the image. </dd> <dd> </dd> <dt>passphrase</dt> <dd>encipher pixels with this passphrase. </dd> <dd> </dd> <dt>passkey</dt> <dd>decrypt cipher pixels with this passkey. </dd> <dd> </dd> <dt>exception</dt> <dd>return any errors or warnings in this structure. </dd> <dd> </dd> </dl> <h2><a href="http://nextgen.imagemagick.org/api/MagickCore/cipher_8c.html" id="SetAESKey">SetAESKey</a></h2> <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> <p>The format of the SetAESKey method is:</p> <pre class="text"> SetAESKey(AESInfo *aes_info,const StringInfo *key) </pre> <p>A description of each parameter follows:</p> <dd> </dd> <dd> </dd> <dl class="dl-horizontal"> <dt>aes_info</dt> <dd>the cipher context. </dd> <dd> </dd> <dt>key</dt> <dd>the key. </dd> <dd> </dd> </dl> <h2><a href="http://nextgen.imagemagick.org/api/MagickCore/cipher_8c.html" id="PasskeyDecipherImage">PasskeyDecipherImage</a></h2> <p>PasskeyDecipherImage() converts cipher pixels to plain pixels.</p> <p>The format of the PasskeyDecipherImage method is:</p> <pre class="text"> MagickBooleanType PasskeyDecipherImage(Image *image, const StringInfo *passkey,ExceptionInfo *exception) MagickBooleanType DecipherImage(Image *image,const char *passphrase, ExceptionInfo *exception) </pre> <p>A description of each parameter follows:</p> <dd> </dd> <dd> </dd> <dl class="dl-horizontal"> <dt>image</dt> <dd>the image. </dd> <dd> </dd> <dt>passphrase</dt> <dd>decipher cipher pixels with this passphrase. </dd> <dd> </dd> <dt>passkey</dt> <dd>decrypt cipher pixels with this passkey. </dd> <dd> </dd> <dt>exception</dt> <dd>return any errors or warnings in this structure. </dd> <dd> </dd> </dl> <h2><a href="http://nextgen.imagemagick.org/api/MagickCore/cipher_8c.html" id="PasskeyEncipherImage">PasskeyEncipherImage</a></h2> <p>PasskeyEncipherImage() converts pixels to cipher-pixels.</p> <p>The format of the PasskeyEncipherImage method is:</p> <pre class="text"> MagickBooleanType PasskeyEncipherImage(Image *image, const StringInfo *passkey,ExceptionInfo *exception) MagickBooleanType EncipherImage(Image *image,const char *passphrase, ExceptionInfo *exception) </pre> <p>A description of each parameter follows:</p> <dd> </dd> <dd> </dd> <dl class="dl-horizontal"> <dt>passphrase</dt> <dd>decipher cipher pixels with this passphrase. </dd> <dd> </dd> <dt>passkey</dt> <dd>decrypt cipher pixels with this passkey. </dd> <dd> </dd> <dt>exception</dt> <dd>return any errors or warnings in this structure. </dd> <dd> </dd> </dl> </div> <footer class="magick-footer"> <p><a href="../script/support.php">Donate</a> • <a href="../script/sitemap.php">Sitemap</a> • <a href="../script/links.php">Related</a> • <a href="../script/architecture.php">Architecture</a> </p> <p><a href="cipher.php#">Back to top</a> • <a href="http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x89AB63D48277377A">Public Key</a> • <a href="../script/contact.php">Contact Us</a></p> <p><small>© 1999-2016 ImageMagick Studio LLC</small></p> </footer> </div><!-- /.container --> <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script> <script src="http://nextgen.imagemagick.org/js/magick.php"></script> </div> </body> </html>