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refactor cmd/crypto code for SSE handling and parsing (#11045)

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This commit refactors the code in `cmd/crypto`
and separates SSE-S3, SSE-C and SSE-KMS.

This commit should not cause any behavior change
except for:
  - `IsRequested(http.Header)`

which now returns the requested type {SSE-C, SSE-S3,
SSE-KMS} and does not consider SSE-C copy headers.

However, SSE-C copy headers alone are anyway not valid.
This commit is contained in:
Andreas Auernhammer
2020-12-22 18:19:32 +01:00
committed by GitHub
parent 35fafb837b
commit 8cdf2106b0
21 changed files with 861 additions and 646 deletions
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14
cmd/http/headers.go
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@@ -111,6 +111,20 @@ const (
AmzMetaUnencryptedContentLength = "X-Amz-Meta-X-Amz-Unencrypted-Content-Length"
AmzMetaUnencryptedContentMD5 = "X-Amz-Meta-X-Amz-Unencrypted-Content-Md5"
// AWS server-side encryption headers for SSE-S3, SSE-KMS and SSE-C.
AmzServerSideEncryption = "X-Amz-Server-Side-Encryption"
AmzServerSideEncryptionKmsID = AmzServerSideEncryption + "-Aws-Kms-Key-Id"
AmzServerSideEncryptionKmsContext = AmzServerSideEncryption + "-Context"
AmzServerSideEncryptionCustomerAlgorithm = AmzServerSideEncryption + "-Customer-Algorithm"
AmzServerSideEncryptionCustomerKey = AmzServerSideEncryption + "-Customer-Key"
AmzServerSideEncryptionCustomerKeyMD5 = AmzServerSideEncryption + "-Customer-Key-Md5"
AmzServerSideEncryptionCopyCustomerAlgorithm = "X-Amz-Copy-Source-Server-Side-Encryption-Customer-Algorithm"
AmzServerSideEncryptionCopyCustomerKey = "X-Amz-Copy-Source-Server-Side-Encryption-Customer-Key"
AmzServerSideEncryptionCopyCustomerKeyMD5 = "X-Amz-Copy-Source-Server-Side-Encryption-Customer-Key-Md5"
AmzEncryptionAES = "AES256"
AmzEncryptionKMS = "aws:kms"
// Signature v2 related constants
AmzSignatureV2 = "Signature"
AmzAccessKeyID = "AWSAccessKeyId"