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8b660e18f2
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>
129 lines
3.6 KiB
Go
129 lines
3.6 KiB
Go
// Copyright (c) 2015-2023 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package kms
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import (
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"fmt"
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"net/http"
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)
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var (
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// ErrPermission is an error returned by the KMS when it has not
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// enough permissions to perform the operation.
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ErrPermission = Error{
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Code: http.StatusForbidden,
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APICode: "kms:NotAuthorized",
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Err: "insufficient permissions to perform KMS operation",
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}
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// ErrKeyExists is an error returned by the KMS when trying to
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// create a key that already exists.
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ErrKeyExists = Error{
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Code: http.StatusConflict,
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APICode: "kms:KeyAlreadyExists",
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Err: "key with given key ID already exits",
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}
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// ErrKeyNotFound is an error returned by the KMS when trying to
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// use a key that does not exist.
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ErrKeyNotFound = Error{
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Code: http.StatusNotFound,
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APICode: "kms:KeyNotFound",
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Err: "key with given key ID does not exit",
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}
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// ErrDecrypt is an error returned by the KMS when the decryption
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// of a ciphertext failed.
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ErrDecrypt = Error{
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Code: http.StatusBadRequest,
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APICode: "kms:InvalidCiphertextException",
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Err: "failed to decrypt ciphertext",
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}
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// ErrNotSupported is an error returned by the KMS when the requested
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// functionality is not supported by the KMS service.
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ErrNotSupported = Error{
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Code: http.StatusNotImplemented,
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APICode: "kms:NotSupported",
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Err: "requested functionality is not supported",
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}
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)
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// Error is a KMS error that can be translated into an S3 API error.
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//
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// It does not implement the standard error Unwrap interface for
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// better error log messages.
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type Error struct {
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Code int // The HTTP status code returned to the client
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APICode string // The API error code identifying the error
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Err string // The error message returned to the client
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Cause error // Optional, lower level error cause.
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}
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func (e Error) Error() string {
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if e.Cause == nil {
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return e.Err
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}
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return fmt.Sprintf("%s: %v", e.Err, e.Cause)
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}
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func errKeyCreationFailed(err error) Error {
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return Error{
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Code: http.StatusInternalServerError,
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APICode: "kms:KeyCreationFailed",
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Err: "failed to create KMS key",
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Cause: err,
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}
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}
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func errKeyDeletionFailed(err error) Error {
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return Error{
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Code: http.StatusInternalServerError,
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APICode: "kms:KeyDeletionFailed",
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Err: "failed to delete KMS key",
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Cause: err,
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}
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}
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func errListingKeysFailed(err error) Error {
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return Error{
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Code: http.StatusInternalServerError,
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APICode: "kms:KeyListingFailed",
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Err: "failed to list keys at the KMS",
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Cause: err,
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}
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}
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func errKeyGenerationFailed(err error) Error {
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return Error{
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Code: http.StatusInternalServerError,
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APICode: "kms:KeyGenerationFailed",
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Err: "failed to generate data key with KMS key",
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Cause: err,
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}
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}
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func errDecryptionFailed(err error) Error {
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return Error{
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Code: http.StatusInternalServerError,
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APICode: "kms:DecryptionFailed",
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Err: "failed to decrypt ciphertext with KMS key",
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Cause: err,
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}
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}
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