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Answer: Use hardware-accelerated encryption/decryption at the storage level, minimizing the overhead while querying.
The most effective approach for high-performance querying on encrypted data in a data lakehouse with highly sensitive information is to use hardware-accelerated encryption/decryption at the storage level. This method offloads encryption and decryption processes to specialized hardware, designed for efficiency, thereby minimizing computational overhead and ensuring fast query operations. It provides a balance between security and performance, encrypting data both at rest and in transit while maintaining scalability for large data volumes.
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For a data lakehouse that stores highly sensitive information requiring encryption both at rest and in transit, which method ensures high-performance querying on the encrypted data?
A
Implement column-level encryption, allowing selective decryption for queried columns to reduce computational overhead.
B
Use hardware-accelerated encryption/decryption at the storage level, minimizing the overhead while querying.
C
Encrypt only non-identifiable data fields, leaving key identifiers and commonly queried fields unencrypted for performance.
D
Leverage a proxy layer for on-the-fly encryption and decryption, caching frequently accessed data in its decrypted form.
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