This VA-003 practice question tests your understanding of explain encryption as a service. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A security engineer needs to ensure that if a key is compromised, previous ciphertext can be re-encrypted with a new key version without exposing the plaintext. Which Vault operation should they use?
Rewrap
Rewrap processes ciphertext without exposing plaintext.
Rotate
Why wrong: Rotate creates a new version but does not re-encrypt existing data.
Encode
Why wrong: No such operation in transit.
Transform
Why wrong: Not a transit operation.
Rekey
Why wrong: Rekey is for changing the root key, not related to transit keys.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Rewrap
The Rewrap operation in Vault allows a ciphertext to be decrypted with the current key version and re-encrypted with a new key version without exposing the plaintext to the caller. This ensures that if a key is compromised, previous ciphertext can be rotated to a new key version while maintaining data confidentiality.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Rewrap
Why this is correct
Rewrap processes ciphertext without exposing plaintext.
Related concept
Read the scenario before looking for a memorised answer.
Rotate
Why it's wrong here
Rotate creates a new version but does not re-encrypt existing data.
Encode
Why it's wrong here
No such operation in transit.
Transform
Why it's wrong here
Not a transit operation.
Rekey
Why it's wrong here
Rekey is for changing the root key, not related to transit keys.
Common exam traps
HashiCorp often tests the distinction between key rotation (creating new key versions) and re-encrypting existing data (Rewrap), where candidates mistakenly choose Rotate thinking it automatically re-encrypts ciphertext.
Detailed technical explanation
Under the hood, Rewrap works by calling the transit engine's decrypt endpoint internally with the current key version, then immediately encrypting the plaintext with the new key version, all within the Vault server's memory. This prevents the plaintext from ever being transmitted or logged. A real-world scenario is when a key is suspected of being compromised in a PCI-DSS environment; Rewrap allows all credit card numbers encrypted with that key to be re-encrypted with a new key version without exposing the card numbers to the application.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the VA-003 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
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FAQ
Explain encryption as a service — This question tests Explain encryption as a service — Read the scenario before looking for a memorised answer..
The correct answer is: Rewrap — The Rewrap operation in Vault allows a ciphertext to be decrypted with the current key version and re-encrypted with a new key version without exposing the plaintext to the caller. This ensures that if a key is compromised, previous ciphertext can be rotated to a new key version while maintaining data confidentiality.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 30, 2026
This VA-003 practice question is part of Courseiva's free HashiCorp certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the VA-003 exam.
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