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kms_client.go
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kms_client.go
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/*
* Copyright 1999-2020 Alibaba Group Holding Ltd.
*
* 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 (
"fmt"
"net/http"
"strings"
"sync"
"github.com/aliyun/alibaba-cloud-sdk-go/services/kms"
dkms_api "github.com/aliyun/alibabacloud-dkms-gcs-go-sdk/openapi"
dkms_transfer "github.com/aliyun/alibabacloud-dkms-transfer-go-sdk/sdk"
"github.com/joy999/nacos-sdk-go/common/constant"
"github.com/joy999/nacos-sdk-go/common/logger"
"github.com/pkg/errors"
)
var (
initKmsClientOnce = &sync.Once{}
kmsClient *KmsClient
)
type KmsClient struct {
*dkms_transfer.KmsTransferClient
kmsVersion constant.KMSVersion
}
func InitDefaultKmsV1ClientWithAccessKey(regionId, ak, sk string) (*KmsClient, error) {
var rErr error
if GetDefaultKmsClient() != nil {
return GetDefaultKmsClient(), rErr
}
if rErr = checkKmsV1InitParam(regionId, ak, sk); rErr != nil {
return nil, rErr
}
initKmsClientOnce.Do(func() {
client, err := NewKmsV1ClientWithAccessKey(regionId, ak, sk)
if err != nil {
rErr = errors.Wrap(err, "init kms v1 client with ak/sk failed")
} else {
client.SetKmsVersion(constant.KMSv1)
kmsClient = client
}
})
return GetDefaultKmsClient(), rErr
}
func checkKmsV1InitParam(regionId, ak, sk string) error {
if len(regionId) == 0 {
return EmptyRegionKmsV1ClientInitError
}
if len(ak) == 0 {
return EmptyAkKmsV1ClientInitError
}
if len(sk) == 0 {
return EmptySkKmsV1ClientInitError
}
return nil
}
func InitDefaultKmsV3ClientWithConfig(config *dkms_api.Config, caVerify string) (*KmsClient, error) {
var rErr error
if GetDefaultKmsClient() != nil {
return GetDefaultKmsClient(), rErr
}
if rErr = checkKmsV3InitParam(config, caVerify); rErr != nil {
return nil, rErr
}
initKmsClientOnce.Do(func() {
client, err := NewKmsV3ClientWithConfig(config)
if err != nil {
rErr = errors.Wrap(err, "init kms v3 client with config failed")
} else {
if len(strings.TrimSpace(caVerify)) != 0 {
logger.Infof("set kms client Ca with content: %s\n", caVerify[:len(caVerify)/maskUnit32Width])
client.SetVerify(caVerify)
} else {
client.SetHTTPSInsecure(true)
}
client.SetKmsVersion(constant.KMSv3)
kmsClient = client
}
})
return GetDefaultKmsClient(), rErr
}
func checkKmsV3InitParam(config *dkms_api.Config, caVerify string) error {
if len(*config.Endpoint) == 0 {
return EmptyEndpointKmsV3ClientInitError
}
if len(*config.Password) == 0 {
return EmptyPasswordKmsV3ClientInitError
}
if len(*config.ClientKeyContent) == 0 {
return EmptyClientKeyContentKmsV3ClientInitError
}
if len(caVerify) == 0 {
return EmptyCaVerifyKmsV3ClientInitError
}
return nil
}
func GetDefaultKmsClient() *KmsClient {
return kmsClient
}
func NewKmsV1ClientWithAccessKey(regionId, ak, sk string) (*KmsClient, error) {
logger.Infof("init kms client with region:[%s], ak:[%s]xxx, sk:[%s]xxx\n",
regionId, ak[:len(ak)/maskUnit8Width], sk[:len(sk)/maskUnit8Width])
return newKmsClient(regionId, ak, sk, nil)
}
func NewKmsV3ClientWithConfig(config *dkms_api.Config) (*KmsClient, error) {
logger.Infof("init kms client with endpoint:[%s], clientKeyContent:[%s], password:[%s]\n",
config.Endpoint, (*config.ClientKeyContent)[:len(*config.ClientKeyContent)/maskUnit8Width],
(*config.Password)[:len(*config.Password)/maskUnit8Width])
return newKmsClient("", "", "", config)
}
func newKmsClient(regionId, ak, sk string, config *dkms_api.Config) (*KmsClient, error) {
client, err := dkms_transfer.NewClientWithAccessKey(regionId, ak, sk, config)
if err != nil {
return nil, err
}
return &KmsClient{
KmsTransferClient: client,
}, nil
}
func (kmsClient *KmsClient) GetKmsVersion() constant.KMSVersion {
return kmsClient.kmsVersion
}
func (kmsClient *KmsClient) SetKmsVersion(kmsVersion constant.KMSVersion) {
logger.Info("successfully set kms client version to " + kmsVersion)
kmsClient.kmsVersion = kmsVersion
}
func (kmsClient *KmsClient) GenerateDataKey(keyId, keySpec string) (string, string, error) {
generateDataKeyRequest := kms.CreateGenerateDataKeyRequest()
generateDataKeyRequest.Scheme = kmsScheme
generateDataKeyRequest.AcceptFormat = kmsAcceptFormat
generateDataKeyRequest.KeyId = keyId
generateDataKeyRequest.KeySpec = keySpec
generateDataKeyResponse, err := kmsClient.KmsTransferClient.GenerateDataKey(generateDataKeyRequest)
if err != nil {
return "", "", err
}
return generateDataKeyResponse.Plaintext, generateDataKeyResponse.CiphertextBlob, nil
}
func (kmsClient *KmsClient) Decrypt(cipherContent string) (string, error) {
request := kms.CreateDecryptRequest()
request.Method = http.MethodPost
request.Scheme = kmsScheme
request.AcceptFormat = kmsAcceptFormat
request.CiphertextBlob = cipherContent
response, err := kmsClient.KmsTransferClient.Decrypt(request)
if err != nil {
return "", fmt.Errorf("kms decrypt failed: %v", err)
}
return response.Plaintext, nil
}
func (kmsClient *KmsClient) Encrypt(content, keyId string) (string, error) {
request := kms.CreateEncryptRequest()
request.Method = http.MethodPost
request.Scheme = kmsScheme
request.AcceptFormat = kmsAcceptFormat
request.Plaintext = content
request.KeyId = keyId
response, err := kmsClient.KmsTransferClient.Encrypt(request)
if err != nil {
return "", fmt.Errorf("kms encrypt failed: %v", err)
}
return response.CiphertextBlob, nil
}
func GetDefaultKMSv1KeyId() string {
return constant.MSE_KMSv1_DEFAULT_KEY_ID
}