ImageMagick: MagickCore, C API for ImageMagick: Convert to and from Cipher Pixels
Author: ImageMagick Studio LLC
Description: ImageMagick® is a software suite to create, edit, and compose bitmap images. It can read, convert and write images in a variety of formats (about 100) including GIF, JPEG, JPEG-2000, PNG, PDF, PhotoCD, TIFF, and DPX. Use ImageMagick to translate, flip, mirror, rotate, scale, shear and transform images, adjust image colors, apply various special effects, or draw text, lines, polygons, ellipses and Bézier curves. ImageMagick is free software delivered as a ready-to-run binary distribution or as source code that you can freely use, copy, modify, and distribute. Its license is compatible with the GPL. It runs on all major operating systems. The functionality of ImageMagick is typically utilized from the command line or you can use the features from programs written in your favorite programming language. Choose from these interfaces: MagickCore (C), MagickWand (C), ChMagick (Ch), Magick++ (C++), JMagick (Java), L-Magick (Lisp), PascalMagick (Pascal), PerlMagick (Perl), MagickWand for PHP (P [cell cut: 1167 characters, first 1000 kept]
Keywords: magickcore, c, api, for, imagemagick:, convert, to, from, cipher, pixels, ImageMagick, ImageMagic, MagickCore, MagickWand, PerlMagick, Magick++, RMagick, PythonMagick, JMagick, TclMagick, Image, Magick, Magic, Wand, ImageMagickObject, Swiss, Army, Knife, Image, Processing

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## AcquireAESInfo

AcquireAESInfo() allocate the AESInfo structure.

The format of the AcquireAESInfo method is:

      AESInfo *AcquireAESInfo(void)

## DestroyAESInfo

DestroyAESInfo() zeros memory associated with the AESInfo structure.

The format of the DestroyAESInfo method is:

      AESInfo *DestroyAESInfo(AESInfo *aes_info)

A description of each parameter follows:

##### aes_info

the cipher context.

## EncipherAESBlock

EncipherAESBlock() enciphers a single block of plaintext to produce a block of ciphertext.

The format of the EncipherAESBlock method is:

      void EncipherAES(AESInfo *aes_info,const unsigned char *plaintext,
        unsigned char *ciphertext)

A description of each parameter follows:

##### aes_info

the cipher context.

##### plaintext

the plain text.

##### ciphertext

the cipher text.

## PasskeyDecipherImage

PasskeyDecipherImage() converts cipher pixels to plain pixels.

The format of the PasskeyDecipherImage method is:

      MagickBooleanType PasskeyDecipherImage(Image *image,
        const StringInfo *passkey,ExceptionInfo *exception)
      MagickBooleanType DecipherImage(Image *image,const char *passphrase,
        ExceptionInfo *exception)

A description of each parameter follows:

##### image

the image.

##### passphrase

decipher cipher pixels with this passphrase.

##### passkey

decrypt cipher pixels with this passkey.

##### exception

return any errors or warnings in this structure.

## PasskeyEncipherImage

PasskeyEncipherImage() converts pixels to cipher-pixels.

The format of the PasskeyEncipherImage method is:

      MagickBooleanType PasskeyEncipherImage(Image *image,
        const StringInfo *passkey,ExceptionInfo *exception)
      MagickBooleanType EncipherImage(Image *image,const char *passphrase,
        ExceptionInfo *exception)

A description of each parameter follows:

##### image

the image.

##### passphrase

encipher pixels with this passphrase.

##### passkey

decrypt cipher pixels with this passkey.

##### exception

return any errors or warnings in this structure.

## SetAESKey

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.

The format of the SetAESKey method is:

      SetAESKey(AESInfo *aes_info,const StringInfo *key)

A description of each parameter follows:

##### aes_info

the cipher context.

##### key

the key.

## PasskeyDecipherImage

PasskeyDecipherImage() converts cipher pixels to plain pixels.

The format of the PasskeyDecipherImage method is:

      MagickBooleanType PasskeyDecipherImage(Image *image,
        const StringInfo *passkey,ExceptionInfo *exception)
      MagickBooleanType DecipherImage(Image *image,const char *passphrase,
        ExceptionInfo *exception)

A description of each parameter follows:

##### image

the image.

##### passphrase

decipher cipher pixels with this passphrase.

##### passkey

decrypt cipher pixels with this passkey.

##### exception

return any errors or warnings in this structure.

## PasskeyEncipherImage

PasskeyEncipherImage() converts pixels to cipher-pixels.

The format of the PasskeyEncipherImage method is:

      MagickBooleanType PasskeyEncipherImage(Image *image,
        const StringInfo *passkey,ExceptionInfo *exception)
      MagickBooleanType EncipherImage(Image *image,const char *passphrase,
        ExceptionInfo *exception)

A description of each parameter follows:

##### passphrase

decipher cipher pixels with this passphrase.

##### passkey

decrypt cipher pixels with this passkey.

##### exception

return any errors or warnings in this structure.

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