Towards Isogeny-Based Password-Authenticated Key Establishment
نویسندگان
چکیده
منابع مشابه
Password-Based Authenticated Key Exchange
Authenticated Key Exchange protocols enable several parties to establish a shared cryptographically strong key over an insecure network using various authentication means, such as strong cryptographic keys or short (i.e., low-entropy) common secrets. The latter example is definitely the most interesting in practice, since no additional device is required, but just a human-memorable password, fo...
متن کامل(Password) Authenticated Key Establishment: From 2-Party to Group
A protocol compiler is described, that transforms any provably secure authenticated 2-party key establishment into a provably secure authenticated group key establishment with 2 more rounds of communication. The compiler introduces neither idealizing assumptions nor high-entropy secrets, e. g., for signing. In particular, applying the compiler to a password-authenticated 2-party key establishme...
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We show a general framework for constructing password-based authenticated key exchangeprotocols with optimal round complexity — one message per party, sent simultaneously — inthe standard model, assuming the existence of a common reference string. When our frameworkis instantiated using bilinear-map cryptosystems, the resulting protocol is also (reasonably)efficient. Somewhat su...
متن کاملPartitioned Group Password-Based Authenticated Key Exchange
Group Password-Based Authenticated Key Exchange (GPAKE) allows a group of users to establish a secret key, as long as all of them share the same password. However, in existing GPAKE protocols as soon as one user runs the protocol with a non-matching password, all the others abort and no key is established. In this paper we seek for a more flexible, yet secure, GPAKE and put forward the notion o...
متن کاملID-Based Group Password-Authenticated Key Exchange
Password-authenticated key exchange (PAKE) protocols are designed to be se-cure even when the secret key used for authentication is a human-memorable password. In thispaper, we consider PAKE protocols in the group scenario, in which a group of clients, each ofthem shares a password with an “honest but curious” server, intend to establish a common secretkey (i.e., a group key) wi...
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ژورنال
عنوان ژورنال: Journal of Mathematical Cryptology
سال: 2020
ISSN: 1862-2984,1862-2976
DOI: 10.1515/jmc-2020-0071