ImageGear Professional for Linux
IG_IP_decrypt
ImageGear Professional > API Reference Guide > Core Component API Reference > Core Component Functions Reference > Image Processing Functions > IG_IP_decrypt

This function decodes an image, or a rectangular portion thereof, that was encrypted using IG_IP_encrypt().

Declaration:

 
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AT_ERRCOUNT ACCUAPI IG_IP_decrypt ( 
        HIGEAR hIGear, 
        LPAT_RECT lpRect, 
        AT_MODE nEncryptType, 
        LPSTR lpszPassword 
);

Arguments:

Name Type Description
hIGear HIGEAR HIGEAR handle of image to be decoded.
lpRect LPAT_RECT Far pointer to an AT_RECT struct specifying the rectangular portion of the image to decode. Set = NULL for the whole image.
nEncrptyType AT_MODE An IG_ENCRYPT_METHOD_ constant specifying how the image was encoded.
lpszPassword LPSTR Far pointer to your zero-terminated password string.

Return Value:

Returns the number of ImageGear errors that occurred during this function call.

Supported Raster Image Formats:

All pixel formats supported by ImageGear Professional.

Example:

 
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HIGEAR hIGear;
/* Decrypt the whole hIGear image by method A & with "Top Secret" password   */ 
IG_IP_decrypt (hIGear, NULL, IG_ENCRYPT_METHOD_A, "Top Secret");

Remarks:

This function works on a DIB, not on a file. You must supply both the encryption method and the password that were used in the call to IG_IP_encrypt().

 

 

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