Open AccessJournal Article
A practical public key cryptosystem provably secure against adaptive chosen ciphertext attack
Ronald Cramer,Victor Shoup +1 more
TLDR
In this article, a new public key cryptosystem is proposed and analyzed, which is provably secure against adaptive chosen ciphertext attack under standard intractability assumptions. But the scheme is quite practical, and is not provable to be used in practice.Abstract:
A new public key cryptosystem is proposed and analyzed. The scheme is quite practical, and is provably secure against adaptive chosen ciphertext attack under standard intractability assumptions. There appears to be no previous cryptosystem in the literature that enjoys both of these properties simultaneously.read more
Citations
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Book ChapterDOI
Identity-Based Encryption from the Weil Pairing
Dan Boneh,Matthew K. Franklin +1 more
TL;DR: This work proposes a fully functional identity-based encryption scheme (IBE) based on the Weil pairing that has chosen ciphertext security in the random oracle model assuming an elliptic curve variant of the computational Diffie-Hellman problem.
Journal ArticleDOI
Identity-Based Encryption from the Weil Pairing
Dan Boneh,Matthew K. Franklin +1 more
TL;DR: This work proposes a fully functional identity-based encryption (IBE) scheme based on bilinear maps between groups and gives precise definitions for secure IBE schemes and gives several applications for such systems.
Book
Guide to Elliptic Curve Cryptography
TL;DR: This guide explains the basic mathematics, describes state-of-the-art implementation methods, and presents standardized protocols for public-key encryption, digital signatures, and key establishment, as well as side-channel attacks and countermeasures.
Book ChapterDOI
Efficient Selective-ID Secure Identity-Based Encryption Without Random Oracles
Dan Boneh,Xavier Boyen +1 more
TL;DR: The first secure IBE scheme without random oracles was presented in this article, where the adversary must commit ahead of time to the identity that it intends to attack, whereas in the standard model the adversary is allowed to choose this identity adaptively.
Journal Article
Short group signatures
TL;DR: In this paper, the authors proposed a group signature scheme based on the Strong Diffie-Hellman assumption and a new assumption in bilinear groups called the Decision Linear assumption.
References
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Journal ArticleDOI
A public key cryptosystem and a signature scheme based on discrete logarithms
TL;DR: A new signature scheme is proposed, together with an implementation of the Diffie-Hellman key distribution scheme that achieves a public key cryptosystem that relies on the difficulty of computing discrete logarithms over finite fields.
Proceedings ArticleDOI
Random oracles are practical: a paradigm for designing efficient protocols
Mihir Bellare,Phillip Rogaway +1 more
TL;DR: It is argued that the random oracles model—where all parties have access to a public random oracle—provides a bridge between cryptographic theory and cryptographic practice, and yields protocols much more efficient than standard ones while retaining many of the advantages of provable security.
Book ChapterDOI
Lower bounds for discrete logarithms and related problems
TL;DR: Lower bounds on the complexity of the discrete logarithm and related problems are proved that match the known upper bounds: any generic algorithm must perform Ω(p1/2) group operations, where p is the largest prime dividing the order of the group.
Proceedings ArticleDOI
Public-key cryptosystems provably secure against chosen ciphertext attacks
Moni Naor,Moti Yung +1 more
TL;DR: This work shows how to construct a public-key cryptosystem (as originally defined by DiNe and Hellman) secure against chosen ciphertezt attacks, given aPublic-Key cryptosystern secure against passive eavesdropping and a noninteractive zero-knowledge proof system in the shared string model.
Book ChapterDOI
Non-Interactive Zero-Knowledge Proof of Knowledge and Chosen Ciphertext Attack
Charles Rackoff,Daniel R. Simon +1 more
TL;DR: A formalization of chosen ciphertext attack is given in the model which is stronger than the "lunchtime attack" considered by Naor and Yung, and it is proved a non-interactive public-key cryptosystem based on non-Interactive zero-knowledge proof of knowledge to be secure against it.
Related Papers (5)
A Practical Public Key Cryptosystem Provably Secure Against Adaptive Chosen Ciphertext Attack
Ronald Cramer,Victor Shoup +1 more
Non-Interactive Zero-Knowledge Proof of Knowledge and Chosen Ciphertext Attack
Charles Rackoff,Daniel R. Simon +1 more