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# frozen_string_literal: true
require "openssl"
require "openssl/signature_algorithm/error"
module OpenSSL
module SignatureAlgorithm
class SignatureVerificationError < Error; end
class UnsupportedParameterError < Error; end
class VerifyKeyError < Error; end
class Base
attr_reader :signing_key, :verify_key
def verify_key=(key)
if compatible_verify_key?(key)
@verify_key = key
else
raise(OpenSSL::SignatureAlgorithm::VerifyKeyError, "Incompatible verify key for algorithm")
end
end
def compatible_verify_key?(verify_key)
verify_key.respond_to?(:verify)
end
def sign(data)
signing_key.sign(hash_function, data)
end
def verify(signature, verification_data)
formatted_signature =
if respond_to?(:formatted_signature, true)
formatted_signature(signature)
else
signature
end
verify_key.verify(hash_function, formatted_signature, verification_data) ||
raise(OpenSSL::SignatureAlgorithm::SignatureVerificationError, "Signature verification failed")
end
end
end
end
|
