rsa_pss.rb in cose-0.11.0

- old
+ new

@@ -2,10 +2,11 @@
 
 require "cose/algorithm/signature_algorithm"
 require "cose/key/rsa"
 require "cose/error"
 require "openssl"
+require "openssl/signature_algorithm/rsapss"
 
 module COSE
   module Algorithm
     class RSAPSS < SignatureAlgorithm
       attr_reader :hash_function, :salt_length
@@ -15,25 +16,13 @@
 
         @hash_function = hash_function
         @salt_length = salt_length
       end
 
-      def compatible_key?(key)
-        to_pkey(key)
-      rescue COSE::Error
-        false
-      end
-
       private
 
-      def valid_signature?(key, signature, verification_data)
-        pkey = to_pkey(key)
-
-        if pkey.respond_to?(:verify_pss)
-          pkey.verify_pss(hash_function, signature, verification_data, salt_length: :digest, mgf1_hash: hash_function)
-        else
-          raise(COSE::Error, "Update to openssl gem >= v2.1 to have RSA-PSS support")
-        end
+      def signature_algorithm_class
+        OpenSSL::SignatureAlgorithm::RSAPSS
       end
 
       def to_pkey(key)
         case key
         when COSE::Key::RSA