Safe and portable anonymous voucher method for universal platform

The invention discloses a safe and portable anonymous credential method for a universal platform, and belongs to the field of network space security. A user registers and applies for a certificate to a certificate issuer, and can autonomously select attributes in the certificate to be revealed or hidden when verifying the identity to a verifier; when identity authentication is carried out, identity authentication is carried out after the encrypted certificate is decrypted by using the password, an enemy only knows the encrypted certificate, and when communication information between a user and a verifier is known, whether the guessed password is correct or not can be determined only by trying to carry out online identity authentication with the verifier. The user only needs to store the voucher on the equipment used during identity authentication, and does not need to consider the security problem caused by voucher leakage due to the fact that the equipment is attacked. The certificate can be protected only b