Module: Sidetree::Util::JWK

Defined in:
lib/sidetree/util/jwk.rb

Class Method Summary collapse

Class Method Details

.parse(params) ⇒ JSON::JWK

Parse jwk hash object. The returned jwk does not include the kid.

Parameters:

  • params (Hash)

Returns:

  • (JSON::JWK) 


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# File 'lib/sidetree/util/jwk.rb', line 10

def parse(params)
  jwk = JSON::JWK.new(params)
  jwk.delete("kid")
  jwk
end

.validate!(jwk) ⇒ Object

Validate jwk object as sidetree jwk.

Parameters:

  • jwk (JSON::JWK)

Raises:



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# File 'lib/sidetree/util/jwk.rb', line 19

def validate!(jwk)
  raise Sidetree::Error unless jwk.is_a?(JSON::JWK)
  jwk.keys.each do |k|
    unless %w[kty crv x y].include?(k)
      raise Sidetree::Error, "JWK Es256k has unknown property"
    end
  end
  unless jwk[:kty] == "EC"
    raise Sidetree::Error, "JWK Es256k missing or invalid kty"
  end
  unless jwk[:crv] == "secp256k1"
    raise Sidetree::Error, "JWK Es256k missing or invalid crv"
  end
  unless jwk[:x].is_a?(String)
    raise Sidetree::Error, "JWK Es256k missing or invalid type x"
  end
  unless jwk[:y].is_a?(String)
    raise Sidetree::Error, "JWK Es256k missing or invalid type y"
  end
  unless jwk[:x].length == 43
    raise Sidetree::Error, "JWK Es256k has incorrect length of x"
  end
  unless jwk[:y].length == 43
    raise Sidetree::Error, "JWK Es256k has incorrect length of y"
  end
end