Module: Sygna::Signature

Defined in:
lib/sygna/signature.rb

Constant Summary collapse

EMPTY_SIGNATURE = 
{ signature: "" }.freeze

Class Method Summary collapse

Class Method Details

.sign(object) ⇒ Object 



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# File 'lib/sygna/signature.rb', line 5

def self.sign(object)
  object_string = object.merge(EMPTY_SIGNATURE).to_json

  Secp256k1::Utils.encode_hex(ecdsa_private_key.ecdsa_serialize_compact(ecdsa_private_key.ecdsa_sign(object_string)))
end

.verify(object, signature, public_key_hex) ⇒ Object 



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# File 'lib/sygna/signature.rb', line 11

def self.verify(object, signature, public_key_hex)
  object_string = object.merge(EMPTY_SIGNATURE).to_json

  public_key_binary = Secp256k1::Utils.decode_hex(public_key_hex)
  ecdsa_public_key = Secp256k1::PublicKey.new(pubkey: public_key_binary, raw: true)

  binary_signature = Secp256k1::Utils.decode_hex(signature)
  raw_signature = ecdsa_public_key.ecdsa_deserialize_compact(binary_signature)

  ecdsa_public_key.ecdsa_verify(object_string, raw_signature)
end