class X25519::MontgomeryU

(a.k.a. Curve25519)
Montgomery-u coordinates of points on the elliptic curve used by X25519
X25519 public keys and shared secrets

def initialize(bytes)

Parameters:
  • bytes (String) -- 32-byte compressed Montgomery-u coordinate 
def initialize(bytes)
  X25519.validate_key_bytes(bytes)
  # The point located at a Montgomery-u coordinate of zero always returns
  # the point at zero regardless of which scalar it's multiplied with
  raise InvalidKeyError, "degenerate public key" if bytes == ("\0" * KEY_SIZE)
  @bytes = bytes
end

def inspect

Show hex representation of serialized coordinate in string inspection 
def inspect
  "#<#{self.class}:#{@bytes.unpack1('H*')}>"
end

def to_bytes

Returns:
  • (String) - bytestring serialization of a Montgomery-u coordinate 
def to_bytes
  @bytes
end