Patent 11451519 was granted and assigned to Electronics and Telecommunications Research Institute on September, 2022 by the United States Patent and Trademark Office.
An anonymous credential authentication system receives an anonymous credential signature value indicating that setting proposition information using a credential is satisfied from a user device that has been issued the credential combined with multiple pieces of attribute information constituting personal information, generates signer authentication information that confirms a signer of the anonymous credential signature value using an opening key, and outputs the signer authentication information.