Encrypted key exchange: password-based protocols secure against dictionary attacks
Steven M. Bellovin,Michael Merritt +1 more
- pp 72-84
TLDR
A combination of asymmetric (public-key) and symmetric (secret- key) cryptography that allow two parties sharing a common password to exchange confidential and authenticated information over an insecure network is introduced.Abstract:
Classic cryptographic protocols based on user-chosen keys allow an attacker to mount password-guessing attacks. A combination of asymmetric (public-key) and symmetric (secret-key) cryptography that allow two parties sharing a common password to exchange confidential and authenticated information over an insecure network is introduced. In particular, a protocol relying on the counter-intuitive motion of using a secret key to encrypt a public key is presented. Such protocols are secure against active attacks, and have the property that the password is protected against offline dictionary attacks. >read more
Citations
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Journal Article
Forward secrecy in password-only key exchange protocols
TL;DR: In this paper, the authors presented a natural definition of security for password-only authenticated key exchange (PAKE) protocols and showed that forward secrecy is a strictly stronger requirement for PAKE protocols.
Proceedings ArticleDOI
Security of the J-PAKE Password-Authenticated Key Exchange Protocol
TL;DR: The first proof of security for this protocol in a well-known and accepted model for authenticated key-exchange, that incorporates online and offline password guessing, concurrent sessions, forward secrecy, server compromise, and loss of session keys is presented.
Book ChapterDOI
Open Key Exchange: How to Defeat Dictionary Attacks Without Encrypting Public Keys
TL;DR: Bellovin and Merritt proposed “encrypted key exchange” (EKE) protocols, to frustrate key-guessing attacks, which requires the use of asymmetric cryptosystems and is based on encrypting the public key, using a symmetric cipher.
Book ChapterDOI
Comparing State Spaces in Automatic Security Protocol Analysis
TL;DR: The study of state space relations is applied in a performance comparison of several well-known automatic tools for security protocol analysis, using the same protocol description and exploring the same state space to effectively compare these automatic tools.
Book ChapterDOI
Secure applications of Pedersen's distributed key generation protocol
TL;DR: This paper presents two efficient and provably secure schemes for server-assisted threshold signatures, where the signing function is activated by a user (but in certain enhanced way), and presents a taxonomy of systems protecting private signing functions.
References
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Journal ArticleDOI
New Directions in Cryptography
TL;DR: This paper suggests ways to solve currently open problems in cryptography, and discusses how the theories of communication and computation are beginning to provide the tools to solve cryptographic problems of long standing.
Journal ArticleDOI
A method for obtaining digital signatures and public-key cryptosystems
TL;DR: An encryption method is presented with the novel property that publicly revealing an encryption key does not thereby reveal the corresponding decryption key.
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.
Book ChapterDOI
A Public Key Cryptosystem and a Signature Scheme Based on Discrete Logarithms
TL;DR: In this article, a new signature scheme is proposed together with an implementation of the Diffie-Hellman key distribution scheme that achieves a public key cryptosystem and the security of both systems relies on the difficulty of computing discrete logarithms over finite fields.
Book
Cryptography and data security
TL;DR: The goal of this book is to introduce the mathematical principles of data security and to show how these principles apply to operating systems, database systems, and computer networks.