Contents

# frozen_string_literal: true

require_relative "sidetree/version"
require "ecdsa"
require "json/jwt"
require "base64"
require "json"
require "json/canonicalization"
require "uri"
require "multihashes"

module Sidetree
  class Error < StandardError
  end

  autoload :Key, "sidetree/key"
  autoload :DID, "sidetree/did"
  autoload :Model, "sidetree/model"
  autoload :OP, "sidetree/op"
  autoload :Validator, "sidetree/validator"

  module Params
    # Algorithm for generating hashes of protocol-related values. 0x12 = sha2-256
    HASH_ALGORITHM = [0x12]
    HASH_ALGORITH_STRING = "sha2-256"

    # Maximum canonicalized operation delta buffer size.
    MAX_DELTA_SIZE = 1000

    # Default DID method
    DEFAULT_METHOD = "sidetree"

    # Supported did methods.
    METHODS = { default: DEFAULT_METHOD, ion: "ion" }

    @network = nil

    def self.network=(network)
      @network = network
    end

    def self.network
      @network
    end

    def self.testnet?
      @network == Network::TESTNET
    end

    module Network
      MAINNET = "mainnet"
      TESTNET = "test"
    end
  end

  module_function

  # Calculate Base64 encoded hash of hash object.
  # @param [Hash] data
  # @return [String] Base64 encoded hash value
  def to_hash(data)
    digest = Digest::SHA256.digest(data.is_a?(Hash) ? data.to_json_c14n : data)
    hash = Multihashes.encode(digest, Params::HASH_ALGORITH_STRING)

    # TODO Need to decide on what hash algorithm to use when hashing suffix data
    # - https://github.com/decentralized-identity/sidetree/issues/965
    Base64.urlsafe_encode64(hash, padding: false)
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
sidetree-0.1.1	lib/sidetree.rb