Verification tool. Wing Payment Digital Certificate refers to an identity authentication tool provided by Wing Payment Company under China Mobile Communications Group. It is a digital certificate based on public key infrastructure (PKI) technology, which is used to verify the identity and security of users on the wing payment platform. Wing payment digital certificate contains the user's identity information and public key, which is used to encrypt and sign the user's transactions and communications on the wing payment platform. The use of digital certificates can ensure the authenticity, confidentiality and integrity of users' transactions on the wing payment platform, improve payment security and prevent information leakage.