Но админы хостера имеют доступ к ключам.
Several key management strategies can be used in an RDBMS, including:
Master Key Management: In this approach, a single master key is used to encrypt and decrypt all data in the RDBMS. This key is usually stored in a secure location, such as a hardware security module (HSM).
Column-Level Key Management: In this approach, each column of data is encrypted using a separate key. This allows for more granular control over data access and improves performance because only the necessary columns are decrypted when querying data.
Table-Level Key Management: Similar to column-level key management, this approach uses a separate key for each table in the RDBMS. This allows for even greater data access control and improved performance.
Regardless of which key management strategy is used, it is essential to have a robust system in place to ensure the security of encrypted data. This includes securely storing keys and quickly and easily rotating keys if there is a breach.
In addition to key management, it is also essential to consider the overall security of the RDBMS. This includes using secure protocols for communication, secure authentication methods, and implementing robust access controls to prevent unauthorized access to data.
Overall, key management is critical to data-at-rest encryption in an RDBMS. Organizations can protect their sensitive data from unauthorized access by implementing a strong key management system and taking steps to secure the RDBMS.