搜索结果: 1-15 共查到“密码学 diffie-hellman”相关记录73条 . 查询时间(0.062 秒)
PQDH: A Quantum-Safe Replacement for Diffie-Hellman based on SIDH
isogenies key agreement side-channel attack
2019/6/21
We present a post-quantum key agreement scheme that does not require distinguishing between the initiator and the responder. This scheme is based on elliptic curve isogenies and can be viewed as a var...
Prime, Order Please! Revisiting Small Subgroup and Invalid Curve Attacks on Protocols using Diffie-Hellman
formal verification symbolic model tamarin prover
2019/5/21
Diffie-Hellman groups are a widely used component in cryptographic protocols in which a shared secret is needed. These protocols are typically proven to be secure under the assumption they are impleme...
Designated Verifier/Prover and Preprocessing NIZKs from Diffie-Hellman Assumptions
Non-interactive zero-knowledge proofs Diffie-Hellman assumptions Homomorphic signatures
2019/3/1
In a non-interactive zero-knowledge (NIZK) proof, a prover can non-interactively convince a verifier of a statement without revealing any additional information. Thus far, numerous constructions of NI...
Safety in Numbers: On the Need for Robust Diffie-Hellman Parameter Validation
Primality testing Miller-Rabin test Diffie-Hellman
2019/1/18
We consider the problem of constructing Diffie-Hellman (DH) parameters which pass standard approaches to parameter validation but for which the Discrete Logarithm Problem (DLP) is relatively easy to s...
Fuchsbauer, Kiltz, and Loss~(Crypto'18) gave a simple and clean definition of an ￥emph{algebraic group model~(AGM)} that lies in between the standard model and the generic group model~(GGM). Specifica...
Pre- and post-quantum Diffie--Hellman from groups, actions, and isogenies
key exchange elliptic-curve cryptography isogenies
2018/11/13
Diffie--Hellman key exchange is at the foundations of public-key cryptography, but conventional group-based Diffie--Hellman is vulnerable to Shor's quantum algorithm. A range of ``post-quantum Diffie-...
18 Seconds to Key Exchange: Limitations of Supersingular Isogeny Diffie-Hellman on Embedded Devices
Post-quantum cryptography supersingular isogeny SIDH
2018/11/8
The quantum secure supersingular isogeny Diffie-Hellman (SIDH) key exchange is a promising candidate in NIST's on-going post-quantum standardization process. The evaluation of various implementation c...
Supersingular Isogeny Diffie-Hellman Authenticated Key Exchange
one-round authenticated key exchange supersingular isogeny decisional Diffie-Hellman assumption supersingular isogeny gap Diffie-Hellman assumption
2018/8/10
We propose two authenticated key exchange protocols from supersingular isogenies. Our protocols are the first post-quantum one-round Diffie-Hellman type authenticated key exchange ones in the followin...
Trapdoor Functions from the Computational Diffie-Hellman Assumption
Trapdoor Functions Computational Diffie-Hellman Assumption
2018/6/5
Trapdoor functions (TDFs) are a fundamental primitive in cryptography. Yet, the current set of assumptions known to imply TDFs is surprisingly limited, when compared to public-key encryption. We prese...
Remarks on Quaternions/Octonion Based Diffie-Hellman Key Exchange Protocol Submitted to NIST PQC Project
Diffie-Hellman key agreement NIST PQC Project
2018/1/2
In November 2017, Juan edro Hecht and Jorge Alejandro Kamlofsky submitted a quaternions/octonions based Diffie-Hellman key agreement protocol HK17 to NIST post quantum cryptography project. Daniel J. ...
A Faster Software Implementation of the Supersingular Isogeny Diffie-Hellman Key Exchange Protocol
SIDH protocol Montgomery ladder post-quantum cryptography
2017/10/19
Since its introduction by Jao and De Feo in 2011, the supersingular isogeny Diffie-Hellman (SIDH) key exchange protocol has positioned itself as a promising candidate for post-quantum cryptography. On...
How Low Can You Go? Short Structure-Preserving Signatures for Diffie-Hellman Vectors
Digital Signatures Structure-Preserving Signatures Type-3 Groups
2017/9/25
Structure-Preserving Signatures (SPSs) are an important tool for the design of modular cryptographic protocols. It has been proven that such schemes in the most efficient Type-3 bilinear group setting...
Fast FPGA Implementations of Diffie-Hellman on the Kummer Surface of a Genus-2 Curve
Diffie-Hellman key exchange hyperelliptic curve cryptography Kummer surface
2017/9/1
We present the first hardware implementations of Diffie-Hellman key exchange based on the Kummer surface of Gaudry and Schost's genus-22 curve targeting a 128128-bit security level. We describe a sing...
Identity-Based Encryption from the Diffie-Hellman Assumption
public-key cryptography Identity-Based Encryption
2017/6/9
We provide the first constructions of identity-based encryption and hierarchical identity-based encryption based on the hardness of the (Computational) Diffie-Hellman Problem (without use of groups wi...
qDSA: Small and Secure Digital Signatures with Curve-based Diffie-Hellman Key Pairs
Signatures Kummer Curve25519
2017/6/6
qDSA is a high-speed, high-security signature scheme that facilitates implementations with a very small memory footprint, a crucial requirement for embedded systems and IoT devices, and that uses the ...