Public and private key certificates are used in the cybersecurity realm to ensure secure communication between two parties. A public key certificate is a digital document that contains information about the public key of a particular entity. The certificate is signed by a trusted third party, known as a certificate authority (CA), which verifies the identity of the entity.
How Public and Private Key Certificates Work
When two parties want to communicate securely, they exchange their public keys. The sender encrypts the message using the recipient’s public key, and the recipient decrypts the message using their private key. This ensures that only the intended recipient can read the message.
Public key certificates are used in many different applications, including secure web browsing and email encryption. They are also used in digital signatures to ensure that a document has not been tampered with.
To mitigate intrusions, it is important to ensure that public key certificates are issued by trusted certificate authorities. It is also important to ensure that private keys are kept secure and not shared with anyone.
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