Static data authentication means that the terminal uses a digital signature scheme based on public key technology. Unauthorized data changes are found after personalization.
Static data authentication requires a high-security authentication center to sign the publisher's public key. Each terminal meeting this specification must keep the public key of the corresponding authentication center for each application it can identify.
The specific process is as follows:
The root CA digitally signs the publisher's public key PI with its own private key SCA to generate the publisher's certificate, which is returned to the publisher's key management system together with the public key information of the root CA. The terminal reads the issuer's certificate and signature data from the card, and uses CA's public key PCA to recover the issuer's public key PI. The terminal decrypts the card signature data using the recovered issuer public key PI.
Digital certificate:
The word digital certificate is not original in China, but comes from the translation of English digital certificate. Digital certificate is essentially an electronic document, an authoritative and fair certificate issued by the electronic commerce certification center (hereinafter referred to as CA center), which has an important influence on electronic commerce activities. For example, when we shop on various e-commerce platforms, we must install digital certificates on the computer to ensure the safety of funds. ?
CA Center adopts digital certificate authentication technology with digital encryption technology as the core. Through digital certificate, CA center can encrypt, decrypt, digitally sign and authenticate all kinds of information transmitted on the Internet, and at the same time, it can ensure that it will not be invaded by lawless elements during digital transmission, or even if it is invaded, it will not be able to view its contents.
Refer to the above? Baidu Encyclopedia-Static Data Authentication
Refer to the above? Baidu Encyclopedia-Digital Certificate