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tink.go
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tink.go
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// Copyright 2023 Woodpecker Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package encryption
import (
"encoding/base64"
"fmt"
"github.com/fsnotify/fsnotify"
"github.com/google/tink/go/tink"
"go.woodpecker-ci.org/woodpecker/v2/server/services/encryption/types"
"go.woodpecker-ci.org/woodpecker/v2/server/store"
)
type tinkEncryptionService struct {
keysetFilePath string
primaryKeyID string
encryption tink.AEAD
store store.Store
keysetFileWatcher *fsnotify.Watcher
clients []types.EncryptionClient
}
func (svc *tinkEncryptionService) Encrypt(plaintext, associatedData string) (string, error) {
msg := []byte(plaintext)
aad := []byte(associatedData)
ciphertext, err := svc.encryption.Encrypt(msg, aad)
if err != nil {
return "", fmt.Errorf(errTemplateEncryptionFailed, err)
}
return base64.StdEncoding.EncodeToString(ciphertext), nil
}
func (svc *tinkEncryptionService) Decrypt(ciphertext, associatedData string) (string, error) {
ct, err := base64.StdEncoding.DecodeString(ciphertext)
if err != nil {
return "", fmt.Errorf(errTemplateBase64DecryptionFailed, err)
}
plaintext, err := svc.encryption.Decrypt(ct, []byte(associatedData))
if err != nil {
return "", fmt.Errorf(errTemplateDecryptionFailed, err)
}
return string(plaintext), nil
}
func (svc *tinkEncryptionService) Disable() error {
return svc.disable()
}