Description: X.509 Key Encryption is an extension of key usage in X.509 certificates, which are standards used in public key infrastructure (PKI). This encryption allows the public key contained in an X.509 certificate to be used to encrypt symmetric keys, thus facilitating the secure transmission of data. In this context, the public key is used to encrypt a symmetric key that is then employed to encrypt the information that needs protection. This technique combines the efficiency of symmetric encryption with the security of asymmetric encryption, as the public key can be shared openly while the symmetric key remains hidden. The use of X.509 certificates is fundamental in security protocols such as SSL/TLS, where the authenticity and integrity of online communications are guaranteed. Additionally, X.509 Key Encryption is essential for creating secure connections in various applications, including encrypted email and digital signatures, where verifying the sender’s identity and the confidentiality of messages is crucial. In summary, X.509 Key Encryption is a key tool in protecting information in the digital environment, ensuring that only authorized parties can access sensitive data.
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