منابع مشابه
Bi-Deniable Public-Key Encryption
In CRYPTO 1997, Canetti et al.put forward the intruiging notion of deniable encryption, which (informally) allows a sender and/or receiver, having already performed some encrypted communication, to produce ‘fake’ (but legitimate-looking) random coins that open the ciphertext to another message. Deniability is a powerful notion for both practice and theory: apart from its inherent utility for re...
متن کاملReceiver-deniable Public-Key Encryption
Incoercible (or deniable) encryption is an important notion that allows a user (a sender and/or a receiver) to escape a coercion attempted by a coercive adversary. Such an adversary approaches the coerced user after transmission forcing him to reveal all his random inputs used during encryption or decryption. Since traditional encryption schemes commits the user to his random inputs, the user i...
متن کاملDeniable Encryption
Consider a situation in which the transmission of encrypted messages is intercepted by an adversary who can later ask the sender to reveal the random choices (and also the secret key, if one exists) used in generating the ciphertext, thereby exposing the cleartext. An encryption scheme is deniable if the sender can generate ‘fake random choices’ that will make the ciphertext ‘look like’ an encr...
متن کاملOn Minimal Assumptions for Sender-Deniable Public Key Encryption
The primitive of deniable encryption was introduced by Canetti et al. (CRYPTO, 1997). Deniable encryption is an encryption scheme with the added feature that after transmitting a message m, both sender and receiver may produce random coins showing that the transmitted ciphertext was an encryption of any message m′ in the message space. Deniable encryption is a key tool for constructing incoerci...
متن کاملLower and Upper Bounds for Deniable Public-Key Encryption
A deniable cryptosystem allows a sender and a receiver to communicate over an insecure channel in such a way that the communication is still secure even if the adversary can threaten the parties into revealing their internal states after the execution of the protocol. This is done by allowing the parties to change their internal state to make it look like a given ciphertext decrypts to a messag...
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ژورنال
عنوان ژورنال: IOSR Journal of Computer Engineering
سال: 2013
ISSN: 2278-8727,2278-0661
DOI: 10.9790/0661-1140812