verified

Decodes the signed message using the MessageVerifier's secret.

verifier = ActiveSupport::MessageVerifier.new("secret")

signed_message = verifier.generate("signed message")
verifier.verified(signed_message) # => "signed message"

Returns nil if the message was not signed with the same secret.

other_verifier = ActiveSupport::MessageVerifier.new("different_secret")
other_verifier.verified(signed_message) # => nil

Returns nil if the message is not Base64-encoded.

invalid_message = "f--46a0120593880c733a53b6dad75b42ddc1c8996d"
verifier.verified(invalid_message) # => nil

Raises any error raised while decoding the signed message.

incompatible_message = "test--dad7b06c94abba8d46a15fafaef56c327665d5ff"
verifier.verified(incompatible_message) # => TypeError: incompatible marshal file format

Options

:purpose

The purpose that the message was generated with. If the purpose does not match, verified will return nil.

message = verifier.generate("hello", purpose: "greeting")
verifier.verified(message, purpose: "greeting") # => "hello"
verifier.verified(message, purpose: "chatting") # => nil
verifier.verified(message)                      # => nil

message = verifier.generate("bye")
verifier.verified(message)                      # => "bye"
verifier.verified(message, purpose: "greeting") # => nil

# File activesupport/lib/active_support/message_verifier.rb, line 210
    def verified(message, **options)
      catch_and_ignore :invalid_message_format do
        catch_and_raise :invalid_message_serialization do
          catch_and_ignore :invalid_message_content do
            read_message(message, **options)
          end
        end
      end
    end