ISC2 Certified Secure Software Lifecycle Professional (CSSLP) Practice Question
Your architecture protects card data in transit with four measures: TLS 1.3 termination at an API gateway, JSON Web Encryption of the entire JSON body, format-preserving encryption of the PAN field inside that JSON, and Transparent Data Encryption on storage. Which measure represents payload-level encryption?
Applying format-preserving encryption only to the PAN field inside the JSON payload
Storing the ciphertext in a tablespace protected by Transparent Data Encryption (TDE)
Encrypting the entire JSON request body with JSON Web Encryption (JWE)
Terminating client connections with TLS 1.3 at the API gateway
Payload-level encryption is applied to the complete application message so it stays confidential even if intermediate hops can read the transport layer. Encrypting the whole JSON body with JSON Web Encryption achieves this. TLS 1.3 termination secures only the transport channel, format-preserving encryption affects a single field, and Transparent Data Encryption safeguards data at rest rather than the payload in transit.
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What is JSON Web Encryption (JWE)?
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How does TLS 1.3 differ from payload-level encryption?
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Why is format-preserving encryption not considered payload-level encryption?
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ISC2 Certified Secure Software Lifecycle Professional (CSSLP)
Secure Software Implementation
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