kms: add support for MinKMS and remove some unused/broken code (#19368)

This commit adds support for MinKMS. Now, there are three KMS
implementations in `internal/kms`: Builtin, MinIO KES and MinIO KMS.

Adding another KMS integration required some cleanup. In particular:
 - Various KMS APIs that haven't been and are not used have been
   removed. A lot of the code was broken anyway.
 - Metrics are now monitored by the `kms.KMS` itself. For basic
   metrics this is simpler than collecting metrics for external
   servers. In particular, each KES server returns its own metrics
   and no cluster-level view.
 - The builtin KMS now uses the same en/decryption implemented by
   MinKMS and KES. It still supports decryption of the previous
   ciphertext format. It's backwards compatible.
 - Data encryption keys now include a master key version since MinKMS
   supports multiple versions (~4 billion in total and 10000 concurrent)
   per key name.

Signed-off-by: Andreas Auernhammer <github@aead.dev>
This commit is contained in:
Andreas Auernhammer
2024-05-08 01:55:37 +02:00
committed by GitHub
parent 981497799a
commit 8b660e18f2
36 changed files with 1794 additions and 1808 deletions

View File

@@ -85,7 +85,7 @@ func (api objectAPIHandlers) PutBucketEncryptionHandler(w http.ResponseWriter, r
kmsKey := encConfig.KeyID()
if kmsKey != "" {
kmsContext := kms.Context{"MinIO admin API": "ServerInfoHandler"} // Context for a test key operation
_, err := GlobalKMS.GenerateKey(ctx, kmsKey, kmsContext)
_, err := GlobalKMS.GenerateKey(ctx, &kms.GenerateKeyRequest{Name: kmsKey, AssociatedData: kmsContext})
if err != nil {
if errors.Is(err, kes.ErrKeyNotFound) {
writeErrorResponse(ctx, w, toAPIError(ctx, errKMSKeyNotFound), r.URL)