What does ca certification mean?

CA certification, that is, electronic certification services, refers to activities that provide authenticity and reliability verification for all parties involved in electronic signatures. Certificate Authority (CA, Certificate Authority) is an organization that issues digital certificates. It is an authoritative organization responsible for issuing and managing digital certificates. As a trusted third party in e-commerce transactions, it assumes the responsibility of verifying the legality of public keys in the public key system.

The CA center issues a digital certificate to each user who uses a public key. The function of the digital certificate is to prove that the user listed in the certificate legally owns the information listed in the certificate. Public key. The digital signature of the CA organization prevents attackers from forging and tampering with certificates. In SET transactions, the CA not only issues certificates to cardholders and merchants, but also issues certificates to banks and gateways that receive payment.

CA is the issuing authority of the certificate and it is the core of PKI. CA is the authority responsible for issuing certificates, authenticating certificates, and managing issued certificates. It should develop policies and specific steps to verify, identify user identities, and sign user certificates to ensure the identity of the certificate holder and the ownership of the public key.

The CA also has a certificate (containing a public key) and a private key. Public users on the Internet trust the CA by verifying the CA's signature. Anyone can obtain the CA's certificate (including the public key) to verify the certificate issued by it.

If the user wants to get a certificate of his own, he should first apply to the CA. After the CA determines the identity of the applicant, it assigns him a public key, and the CA binds the public key to the applicant's identity information and signs it, then forms a certificate and issues it to the applicant.

If a user wants to verify the authenticity of another certificate, he uses the CA's public key to verify the signature on that certificate. Once the verification is passed, the certificate is considered valid.

In order to ensure the security, authenticity, reliability, integrity and non-repudiation of information transmitted between users online, it is not only necessary to verify the authenticity of the user's identity, but also to have an authoritative It is an impartial and unique institution that is responsible for issuing and managing e-commerce security certificates that comply with domestic and international secure electronic transaction protocol standards to various e-commerce entities, and is responsible for managing the digital certificates required by all individuals participating in online transactions. Therefore, It is the core link of secure electronic transactions.

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