aslamnotes

common s3 headers

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For encryption:

  • x-amz-server-side-encryption: AES256 — SSE-S3 (default key)
  • x-amz-server-side-encryption: aws:kms — SSE-KMS
  • x-amz-server-side-encryption-aws-kms-key-id — Optional: custom KMS key

For object uploads:

  • x-amz-storage-class — e.g., STANDARD, GLACIER, etc.
  • x-amz-acl — e.g., private, public-read
  • x-amz-meta-* — Custom metadata

For conditional requests:

  • If-Match, If-None-Match
  • If-Modified-Since, If-Unmodified-Since

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