Project

h2c

0.0
The project is in a healthy, maintained state
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Ruby implementation of hash to curve.
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 Popularity
Downloads
3,893
Stars
0
Forks
0
Watchers
2
 Releases
Current version
0.2.1
Total releases
3
First release
2023-01-12
Latest release
2024-02-06
 Development
Primary Language
Ruby
Licenses
MIT
Average date of last 50 commits
2023-05-07
Reverse Dependencies
2

 Dependencies

Runtime

ecdsa
~> 1.2.0
 Project Readme

Hashing to Elliptic Curves for Ruby

This is a Ruby implementation of the Hash to Curves proposed by the IETF.

It has been tested using the Test Vector provided, but the code has not been audited to ensure functional specification and safety. Also It is under development and is subject to change without backward compatibility.

The following cipher suites are currently supported:

  • secp256k1_XMD:SHA-256_SSWU_NU_
  • secp256k1_XMD:SHA-256_SSWU_RO_
  • BLS12381G1_XMD:SHA-256_SSWU_NU_
  • BLS12381G1_XMD:SHA-256_SSWU_RO_
  • P256_XMD:SHA-256_SSWU_NU_
  • P256_XMD:SHA-256_SSWU_RO_
  • P384_XMD:SHA-384_SSWU_NU_
  • P384_XMD:SHA-384_SSWU_RO_
  • P521_XMD:SHA-512_SSWU_NU_
  • P521_XMD:SHA-512_SSWU_RO_

Installation

Add this line to your application's Gemfile:

gem 'h2c'

And then execute:

$ bundle install

Or install it yourself as:

$ gem install h2c

Usage

require 'h2c'

dst = "QUUX-V01-CS02-with-secp256k1_XMD:SHA-256_SSWU_RO_"

h2c = H2C.get(H2C::Suite::SECP256K1_XMDSHA256_SSWU_RO_, dst)

msg = "abc"

result = h2c.digest(msg)
puts result.inspect
#<ECDSA::Point: secp256k1, 0x3377e01eab42db296b512293120c6cee72b6ecf9f9205760bd9ff11fb3cb2c4b, 0x7f95890f33efebd1044d382a01b1bee0900fb6116f94688d487c6c7b9c8371f6>