f116v is a decryption attempt?

[oshfdk]

There is also this very interesting concept:

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Julian Assange himself worked on such a method some time ago.

Vol 3 of Trithemius' Steganographia is a 500 years old example of deniable encryption, and a very good one, only broken in the 1990s. For 500 years the prevailing opinion was that the decoy covertext is the only message.