A JavaScript SRP-6a implementation compatible with opencoff/go-srp.

Related tags

Learning resource js-srp
Overview

js-srp

This is an implementation of the SRP-6a protocol with modifications to provide compatibility with opencoff/go-srp. These differences are quoted here, from the opencoff/go-srp README.

Differences from SRP-6a and RFC 5054

We differ from the SRP-6a spec and RFC 5054 in a couple of key ways:

  • We hash the identity I; this provides some (minimal) protection against dictionary attacks on the username.
  • We hash the user passphrase p; this expands shorter passphrase into longer ones and extends the alphabet used in the passphrase.
  • We differ from RFC 5054 in our choice of hash function; we use Blake-2b. SHA-1 is getting long in the tooth, Blake2b is the current state-of-the art. Equivalently, one may use SHA3 (see below for using a user supplied hash function).

The only difference is that Blake2b is not supported because it is not offered by WebCrypto; instead, you can choose between the overlapping supported hash functions between opencoff/go-srp and WebCrypto.

Currently, only client functionality is implemented.

This library does not have any external runtime dependencies. It requires a JavaScript runtime that supports w3c Typed Arrays, BigInt, and WebCrypto, which includes the majority of web browsers and JavaScript engines.

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Releases(v0.0.2)

  • v0.0.2(Dec 9, 2022)

    • Added stub examples.
    • Added support for SRP Tools compatibility.
    • Added test for SRP Tools compatibility.
    • Improved environment support: Node.JS CommonJS, Node.JS ES Modules, and Browser ES Modules should all work out of the box using a bare module import.
    Source code(tar.gz)
    Source code(zip)

  • v0.0.1(Sep 25, 2022)

    There are still no tests or examples, and the server portion of SRP is not implemented. This library should probably not be used in production :)

    Source code(tar.gz)
    Source code(zip)
Owner
No REST for the wicked.
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