Encryption of sensitive information is a fundamental technique for data privacy protection. It transforms readable data (plaintext) into an unreadable format (ciphertext) using algorithms and encryption keys, ensuring that only authorized parties with the correct decryption key can access the original data. This process prevents unauthorized access, interception, or tampering during data storage, transmission, or processing.
For example, when a user submits personal information (e.g., credit card details) on a website, encryption (such as HTTPS with TLS) secures the data in transit, protecting it from hackers. Similarly, encrypting stored data (e.g., databases or cloud storage) ensures that even if the storage medium is compromised, the data remains inaccessible without the decryption key.
In cloud environments, services like Tencent Cloud's Key Management Service (KMS) help manage encryption keys securely, while Tencent Cloud SSL Certificates enable HTTPS encryption for web applications. These tools enhance data privacy by ensuring sensitive information is protected both at rest and in transit.