Module: MoneyTree::OpenSSLExtensions

Extended by:
OpenSSLExtensions
Included in:
OpenSSLExtensions
Defined in:
lib/openssl_extensions.rb

Instance Method Summary collapse

Instance Method Details

#add(point_0, point_1) ⇒ Object 



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# File 'lib/openssl_extensions.rb', line 9

def add(point_0, point_1)
  validate_points(point_0, point_1)
  group = OpenSSL::PKey::EC::Group.new("secp256k1")
  point_0_hex = point_0.to_bn.to_s(16)
  point_0_pt = OpenSSL::PKey::EC::Point.new(group, OpenSSL::BN.new(point_0_hex, 16))
  point_1_hex = point_1.to_bn.to_s(16)
  point_1_pt = OpenSSL::PKey::EC::Point.new(group, OpenSSL::BN.new(point_1_hex, 16))
  sum_point = point_0_pt.add(point_1_pt)
  sum_point.to_bn.to_s(16)
end

#validate_points(*points) ⇒ Object 



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# File 'lib/openssl_extensions.rb', line 20

def validate_points(*points)
  points.each do |point|
    if !point.is_a?(OpenSSL::PKey::EC::Point)
      raise ArgumentError, "point must be an OpenSSL::PKey::EC::Point object"
    elsif point.infinity?
      raise ArgumentError, "point must not be infinity"
    end
  end
end