Software Helps Rights Groups Protect Sensitive Information

[Ian Brown]

>This reminds me of a question I've been meaning to ask for a while. Has

>there been any research done on encryption systems which encrypt two
(or 
>n) plaintexts with n keys, producing a joint ciphertext with the 
>property that decrypting it with key k[n] only produces the 
>nth plaintext?

See the Steganographic File System:
http://www.mcdonald.org.uk/StegFS/


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