Results 31 to 40 of about 20,176 (290)
Effort-release public-key encryption from cryptographic puzzles [PDF]
, 2012 Timed-release cryptography addresses the problem of “sending messages into the future”: information is encrypted so that it can only be decrypted after a certain amount of time, either (a) with the help of a trusted third party time server, or (b) after ...
Gonzalez Nieto, Juan M. +9 more
core +1 more source
Public Key Encryption with Keyword Search [PDF]
, 2004 We study the problem of searching on data that is encrypted using a public key system. Consider user Bob who sends email to user Alice encrypted under Alice’s public key. An email gateway wants to test whether the email contains the keyword “urgent” so that it could route the email accordingly. Alice, on the other hand does not wish to give the gateway
DAN BONEH +3 more
openaire +3 more sources
Shared and searchable encrypted data for untrusted servers [PDF]
, 2011 Current security mechanisms are not suitable for organisations that outsource their data management to untrusted servers. Encrypting and decrypting sensitive data at the client side is the normal approach in this situation but has high communication and ...
Dong, Changyu +2 more
core +1 more source
CCA-Secure Deterministic Identity-Based Encryption Scheme [PDF]
Journal of Universal Computer Science, 2019 Deterministic public-key encryption, encrypting a plaintext into a unique ciphertext without involving any randomness, was introduced by Bellare, Boldyreva, and O'Neill (CRYPTO 2007) as a realistic alternative to some inherent drawbacks in randomized ...
Meijuan Huang +5 more
doaj +3 more sources
Leakage-Resilient Certificateless Public Key Encryption [PDF]
, 2013 In certificateless public key encryption (CL-PKE), the Private Key Generator (PKG) keeps a master secret key to generate a partial private key corresponding to a user's identity.
Xiong, H +9 more
core +1 more source
Universal Proxy Re-Encryption [PDF]
, 2021 We put forward the notion of universal proxy re-encryption (UPRE). A UPRE scheme enables a proxy to convert a ciphertext under a (delegator) public key of any existing public-key encryption (PKE) scheme into another ciphertext under a (delegatee) public ...
Ryo Nishimaki (17434047) +1 more
core +1 more source
Provably sender-deniable encryption scheme [PDF]
Computer Science Journal of Moldova, 2015 The use of the well known provably secure public-key cryptoscheme by Rabin is extended for the case of the deniable encryption. In the proposed new sender-deniable encryption scheme the cryptogram is computed as coefficients of quadratic congruence, the
N.A. Moldovyan +2 more
doaj
Decryption speed up of ElGamal with composite modulus.
PLoS ONE, 2020 Public key cryptosystems such as RSA, rebalanced RSA and ElGamal have the disadvantage of serious asymmetry between encryption and decryption speed.
GyuChol Kim, SuChol Li
doaj +1 more source
Leveled Certificateless Fully Homomorphic Encryption Schemes From Learning With Errors
IEEE Access, 2020 Fully homomorphic encryption (FHE) is a form of public-key encryption that allows the computation of arbitrary functions on encrypted data without decrypting the data. As a result, it is a useful tool with numerous applications.
Mingxiang Li
doaj +1 more source
Practical identity-based key agreement for secure communication in sensor networks [PDF]
, 2009 Despite much research effort key distribution in Wireless Sensor Networks (WSNs) still remains an open problem. In this paper we address this issue by proposing a simple identity- based key agreement scheme. Our protocol uses Identity-Based Cryptography (
Martin Collier +3 more
core +1 more source