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Home/Questions/Cloud/Tools/What are the differences between SSE-S3, SSE-KMS, and SSE-C encryption?

What are the differences between SSE-S3, SSE-KMS, and SSE-C encryption?

Cloud/Toolseasy0.5 min readPremium
Frequency
Low
Asked at 1 company
Category
179
questions in Cloud/Tools
Difficulty Split
104E|27M|48H
in this category
Total Bank
1,863
across 7 categories
Asked at these companies
Capco
Expert AnswerPremium
104 wordsInterview-ready
**SSE-S3**: S3 manages keys. Transparent; no audit of key usage. Cheapest. Use when compliance doesn't require key audit. **SSE-KMS**: KMS manages keys. CloudTrail logs every encrypt/decrypt. Customer-managed keys (CMK) allow rotation, policy. Use when compliance requires audit (HIPAA, PCI). **SSE-C**: Customer provides key per request. S3 does not store key. You manage key lifecycle. Use for maximum control; operational burden....
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