Fully digital encryption technique
نویسندگان
چکیده
منابع مشابه
Fully Distributed Broadcast Encryption
Broadcast encryption schemes rely on a centralized authority to generate decryption keys for each user. It is observed that, when a broadcast encryption scheme is deployed for secret escrows, a dishonest dealer can read the escrowed secrets without leaving any witnesses. We present a new broadcast encryption paradigm referred to as fully distributed broadcast encryption (FDBE) without suffering...
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We describe two improvements to Gentry's fully homomorphic scheme based on ideal lattices and its analysis: we provide a more aggressive analysis of one of the hardness assumptions (the one related to the Sparse Subset Sum Problem) and we introduce a probabilistic decryption algorithm that can be implemented with an algebraic circuit of low multiplicative degree. Combined together, these improv...
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Achieving fully homomorphic encryption, under any kind of reasonable computational assumptions (and under any reasonable definition of ”reasonable”..), was a holy grail of cryptography for many years until finally achieved by Craig Gentry in 2009. In these lectures we’ll describe a somewhat simplified variant of Gentry’s construction obtained by van Dijk, Gentry, Halevi and Vaikuntanathan (with...
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In these notes we describe how to use our family of random lattices Λq(A) to build a fully homomorphic encryption scheme, i.e., an encryption scheme that allows to perform arbitrary computations on encrypted messages, without knowing the secret decryption key. For simplicity, we consider private encryption schemes, where the encryption and decryption algorithms use the same secret key. This is ...
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ژورنال
عنوان ژورنال: Optics Communications
سال: 2003
ISSN: 0030-4018
DOI: 10.1016/s0030-4018(03)01462-7