Public-key updating method and bank card terminal based on the method
An update method, bank card technology, applied in the direction of a complete banking system, a complete banking system, coin-free or similar appliances, etc., to avoid multiple interactions, avoid instantaneous surges, and reduce usage costs.
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[0050] Certification Authority (CA, Certification Authority) 101: has high-level security encryption equipment to sign the issuer's public key, and at the same time securely transmit the CA public key to the acquirer. The CA certification center 101 is responsible for managing the CA public key. It is mainly manifested in the management of the general life cycle of public key planning, generation, release, use, and recycling, as well as the management functions of special stages such as monitoring, evaluation, decision-making, and early recycling of public / private key pairs when they are leaked.
[0051] CA public key / private key: generated by the CA certification center 101, its function is: the CA certification center 101 uses the CA private key to encrypt the data to be signed to generate a digital certificate, which can only be decrypted by the CA public key. Therefore, if the party holding the CA public key can correctly decrypt the certificate, it can prove that the sour...
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