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The authors consider a method for preventing e-Fraud in which a binary image is encrypted with a floating point cipher using a convolution operation and the output quantized into a 1-bit array generating a binary image ciphertext. The output is then 'Embedded' in a host image to hide the encrypted information. Embedding is undertaken either in the lowest 1- bit layer or multiple 1-bit layers. Decryption is accomplished by: extracting the binary image from the host image; correlating the result with the original cipher. In principle, any cipher generator can be used for this purpose and the method has been designed to operate with 24-bit color images.
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