In cryptography and steganography, deniable encryption is encryption that allows its users to convincingly deny the fact that the data is encrypted or, assuming that the data is obviously encrypted, its users can convincingly deny that they are able to decrypt it. Such convincing denials may or may not be genuine e.g. although suspicions might exist that the data is encrypted, it may be impossible to prove it without the co-operation of the users.

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  • In cryptography and steganography, deniable encryption is encryption that allows its users to convincingly deny the fact that the data is encrypted or, assuming that the data is obviously encrypted, its users can convincingly deny that they are able to decrypt it. Such convincing denials may or may not be genuine e.g. although suspicions might exist that the data is encrypted, it may be impossible to prove it without the co-operation of the users. In any case, even if the data is encrypted then the users genuinely may not have the ability to decrypt it. Deniable encryption serves to undermine an attacker's confidence either that data is encrypted, or that the person in possession of it can decrypt it and provide the associated plaintext. Normally ciphertexts commit to a given plaintext and hence the encryption user cannot claim that he encrypted a different message. Deniable encryption allows its user to point to a different (innocuous but plausible) plaintext and insist that that is what he encrypted. The holder of the ciphertext will not have the means to differentiate between the true plaintext, and the bogus-claim plaintext.
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  • Denial cryptography based on graph theory
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  • In cryptography and steganography, deniable encryption is encryption that allows its users to convincingly deny the fact that the data is encrypted or, assuming that the data is obviously encrypted, its users can convincingly deny that they are able to decrypt it. Such convincing denials may or may not be genuine e.g. although suspicions might exist that the data is encrypted, it may be impossible to prove it without the co-operation of the users.
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  • Deniable encryption
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