A safe implementation of the secure remote password authentication and key-exchange protocol (SRP), SRP6a and legacy are as features available.

Related tags

Cryptography cryptography authentication pki srp srp-6a
Overview

Secure Remote Password (SRP 6 / 6a)

crates.io License: MIT codecov

A safe implementation of the secure remote password authentication and key-exchange protocol (SRP version 6a). Version 6 (legacy) is as features available.

About SRP

The Secure Remote Password protocol performs secure remote authentication of short human-memorizable passwords and resists both passive and active network attacks. Because SRP offers this unique combination of password security, user convenience, and freedom from restrictive licenses, it is the most widely standardized protocol of its type, and as a result is being used by organizations both large and small, commercial and open-source, to secure nearly every type of human-authenticated network traffic on a variety of computing platforms.

read more at srp.stanford.edu and in RFC2945 that describes in detail the Secure remote password protocol.

Features

  • client and server implementation of SRP 6 / 6a as in RFC2945
  • key length of 256 to 4096 bit provided as in RFC5054
  • free of unsafe code
  • no openssl dependencies
  • rust native

Documentation

To avoid code duplications this README is kept lean, please find examples and code at:

License

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Comments
  • No moduli smaller than 2048 bits

    No moduli smaller than 2048 bits

    Your current implementation includes moduli of 256, 512, and 1024 bits. These are unsafe. The first two are extraordinarily easy to break. If you really want to keep them because they are listed in ancient standards documents then hide them behind a feature and label them as never to be used in real systems.

    opened by jpgoldberg 3
  • chore(deps): update sha-1 requirement from 0.9 to 0.10

    chore(deps): update sha-1 requirement from 0.9 to 0.10

    Updates the requirements on sha-1 to permit the latest version.

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    dependencies 
    opened by dependabot[bot] 1
  • fix(legacy:moduli): hide all moduli < 2048 bit behind feature flag

    fix(legacy:moduli): hide all moduli < 2048 bit behind feature flag

    • fixes issue #1
    • the legacy feature flag now hides all moduli < 2048
    • lib docs adjusted to point out what are safe key length
    • improve readability of example code by hide mocked functions
    • use safe modulus in examples/01_signup.rs
    • extend the Srp6 struct to have the KEY_LEN and SALT_LEN as pub const property available
    • extend the lib rust docs for the 2 missing steps (proof and strong proof verification)
    opened by sassman 1
  • Do not suggest that RSA moduli are usable

    Do not suggest that RSA moduli are usable

    In the docs in defaults.rs you have the text

    **NOTE:** if you need to roll your own modulus, you can generate one e.g. like this:
\```sh
openssl genrsa 1024 | openssl rsa -modulus
\```

    An RSA modulus cannot be used as an SRP group modulus. An RSA modulus is a composite number, and SRP group modulus must be a safe prime. (Also 1024 is way too small. See issue #1 )

    opened by jpgoldberg 0
Owner
Sven Assmann
Polyglot software engineer, since 2006 mainly on web technologies. Like to explore new things and toy around with languages, frameworks and problems. 🦀 he/him
Sven Assmann
GitHub
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