منابع مشابه
Public-key Encryption with Masking Public-key Encryption with Masking
Timed-release encryption, first mentioned by May [12] and discussed by Rivest, Shamir, and Wanger [15], is a cryptographic primitive which enables us to “send a message into the future.” We take a simple approach, called public-key encryption with masking, in order to realize this requirement. In our model, the sender first encrypts a plaintext and “masks” the ciphertext, then send it the recei...
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This exposition paper suggests a new low-bandwidth publickey encryption paradigm. The construction turns a weak form of key privacy into message privacy as follows: let E be a public-key encryption algorithm. We observe that if the distributions E(pk0, •) and E(pk1, •) are indistinguishable for two public keys pk0, pk1, then a message bit b ∈ {0, 1} can be embedded in the choice of pkb. As the ...
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The main purpose of this paper is to show that public key encryption can be secure against the “encryption emulation” attack (on the sender’s encryption) by computationally unbounded adversary, with one reservation: a legitimate receiver decrypts correctly with probability that can be made arbitrarily close to 1, but not equal to 1. 1. Summary of our claims We thought it would make sense to sum...
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We consider a novel security requirement of encryption schemes that we call “key-privacy” or “anonymity”. It asks that an eavesdropper in possession of a ciphertext not be able to tell which specific key, out of a set of known public keys, is the one under which the ciphertext was created, meaning the receiver is anonymous from the point of view of the adversary. We investigate the anonymity of...
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ژورنال
عنوان ژورنال: The Journal of The Institute of Image Information and Television Engineers
سال: 2015
ISSN: 1342-6907,1881-6908
DOI: 10.3169/itej.69.714