9/11/2023 0 Comments Alchemy definition![]() ![]() I also felt that if I were to use a network related exemplar, potential user Is not simple especially since Alchemy does not provide functionality directly related to networkĬommunication. Writing a portable network communication program To acquire, and the format is simple enough to be implemented in a small sample program. Loading and storing a bitmap from a file is a good serialization task bitmaps are relatively easy Require serialization capabilities similar to the capabilities found in Alchemy. Serialization library that is not restricted to network communication. Serializing of data for network data transfer protocols. ![]() Through the development of the base set of features for Alchemy, I focused solely on the Photographs with a range of gradients are goodĬandidates for this form of steganography. The only caveat is the image should have a sufficient amount of entropy, otherwise the noiseĪdded by the encoded data may become visible if not to a human, then most certainly to computer searching for such anomalies. For demonstration purposes, the alpha channel is represented with grayscale.Ĭompare this to the result if we substitute only the single high-bit for each color channel: The row with binary indicates the values of the four lower-bits for each 8-bit color. The table below shows a sample for each color channel, with and without the two lower-bits set. This can be achieved by taking advantage of the fact that the low-order bitsįor the color channels in an image affect the final color much less compared to the high-order bits. The form of steganography that I have implemented with Alchemy embeds a text message withinĪ bitmap image. The second letter of every other word can be extracted to form the message. The location of words relative to others in the message can have a significant meaning. Normal words can be given special meaning and included within a message that appears to be mundane. Steganography can be performed in may ways. "Stenography," which is the recording of dictation. Steganography is the hiding of messages within plain-sight. Some pain-points with the library and added tools to Alchemy to eliminate this pain. In the process of developing this application I discovered I chose steganography to demonstrate that Alchemy is much more useful than the The Steganography sample program included with Alchemy The only way to learn how well the library is designed and implemented is to use it.įurthermore, it is useful and sometimes necessary to provide an exemplar for others to see how Ideally, the library is complete, easy to use, and is efficient. A software library provides no value if it does not simplify the task of creating your application.Īt the very least we would like to show that the library contains all of the tools required to complete
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