Certified Cloud Security Professional (CCSP)Cloud Data SecurityHard
A cloud security architect is designing a solution for a highly sensitive research dataset. The requirement is that the data must be encrypted in such a way that it can be searched and queried without ever being decrypted. This would allow researchers to perform statistical analysis on sensitive data while ensuring its confidentiality. Which advanced cryptographic technique is designed to enable this functionality?
- AHomomorphic Encryption
- BAttribute-Based Encryption (ABE)
- CFormat-Preserving Encryption (FPE)
- DSearchable Encryption
Show answer & explanationAnswer & explanation
Correct answer: D. Searchable Encryption
Searchable encryption specifically allows users to perform keyword searches over encrypted data without first decrypting it. This directly addresses the requirement to query and analyze sensitive data while maintaining its confidentiality.
Why the other options are wrong
- A. Homomorphic encryption allows general computations on encrypted data, but searchable encryption is more specific for querying.
- B. Attribute-Based Encryption (ABE) is for fine-grained access control based on user attributes, not for searching encrypted data.
- C. Format-Preserving Encryption (FPE) encrypts data while retaining its original format, useful for database compatibility but not for secure searching.
Searchable Encryption
Searchable encryption is a cryptographic technique that allows users to perform keyword searches over encrypted data without decrypting the data first. This enables secure querying and analysis of sensitive information stored in untrusted environments.
- Enables searching on ciphertext.
- Data remains encrypted during search operations.
- Useful for cloud-based data analytics and retrieval.
- Can be symmetric or asymmetric based.
Memory trick: Searchable: Seek Silently, Securely.