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What does it mean that the electronic signature under CT report has been certified by CA?
CA certification, also known as electronic signature certification, and CA Certificate Authority, also known as "Certificate Authority Center", is an authoritative and impartial third-party trust institution, which provides network identity authentication services by using public key infrastructure technology, mainly checking the legality of certificate holders' identities, issuing and managing digital certificates, and preventing certificates from being forged or tampered with.

A CA certificate can achieve the following functions:

① Identity authentication: The two parties transmitting information in the network can't meet each other, so they can use digital certificates to confirm their identities instead of being impersonated by others.

② Confidentiality of information: The information is encrypted by digital certificate, and only the receiver can read the encrypted information, thus ensuring that the information will not be stolen by others.

③ Integrity of information: Digital certificates can be used to check whether the transmitted information has been tampered with or lost during transmission.

Undeniability: A digital signature with a digital certificate has the same legal effect as a handwritten signature.

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