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 ArticleDOI
Improving code division multiple access security by applying encryption methods over the spreading codes
Mehdi Tafaroji,Abolfazl Falahati +1 more
TL;DR: A new method based on applying encryption algorithm over spreading codes is proposed to improve the security of CDMA, and the combination of encrypted and unencrypted M-sequence is used as a spreading code to mitigate the system performance.
Book ChapterDOI
A secure threshold anonymous password-authenticated key exchange protocol
TL;DR: It is shown that the TAP protocol provides semantic security of session keys in the random oracle model, with the reduction to the computational Diffie-Hellman problem, as well as anonymity against a passive server.
Proceedings ArticleDOI
Delayed password disclosure
Markus Jakobsson,Steven Myers +1 more
TL;DR: A new authentication protocol called Delayed Password Disclosure is presented, aimed at reducing the effectiveness of phishing/spoofing attacks that are becoming increasingly problematic for Internet users by providing the user with dynamic feedback while password entry occurs.
Journal ArticleDOI
Delayed password disclosure
Markus Jakobsson,Steven Myers +1 more
TL;DR: While the protocol cannot prevent partial disclosure of one's password to the phisher, it does provide a user with the tools necessary to recognise an ongoing phishing attack, and prevent the disclosure of his/her entire password, providing graceful security degradation.
Proceedings ArticleDOI
POSH: a generalized captcha with security applications
Waseem Daher,Ran Canetti +1 more
TL;DR: The above scheme is implemented as an extension to the Mozilla Firefox web browser, where it is used to protect user certificates and saved passwords and defines certain aspects of the threat model for the implementation more precisely.
References
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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.