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Adumbra: A lightweight Java library for bitmap steganography
A light-weight Java library that uses steganography to hide data in bitmaps using a secret key - galliumdata/adumbra
Adumbra is intended to be used as more of a way to mark bitmaps in a non-obvious way, rather than as an efficient way to transmit large amounts of secret data. This library has not been reviewed by cryptography experts, so you should exercise common sense -- do not rely on it to hide national security secrets. Adumbra was developed while working on Gallium Data to allow invisible watermarking of bitmaps stored in databases.
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