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secretManager.go
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secretManager.go
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package manager
import (
"context"
"crypto/ecdsa"
"crypto/rand"
"encoding/base64"
"errors"
"fmt"
"strings"
"time"
secretmanager "cloud.google.com/go/secretmanager/apiv1"
"cloud.google.com/go/secretmanager/apiv1/secretmanagerpb"
"github.com/anoideaopen/cartridge/cryptocache"
"github.com/hyperledger/fabric-lib-go/bccsp/utils"
"github.com/sirupsen/logrus"
"google.golang.org/api/iterator"
"google.golang.org/api/option"
)
// SecretManager handles SecretManager operations
type SecretManager struct {
client *secretmanager.Client
memcache cryptocache.CryptoCache
signingIdentity *VaultSigningIdentity
}
func encodeSecretName(secretName string) string {
replacer := strings.NewReplacer("@", "____", "/", "___", ".", "__")
return replacer.Replace(secretName)
}
func decodeSecretName(encodedSecretName string) string {
replacer := strings.NewReplacer("____", "@", "___", "/", "__", ".")
return replacer.Replace(encodedSecretName)
}
func NewSecretManager(mspID, project, userCert, credsPath string) (*SecretManager, error) {
ctx := context.Background()
client, err := secretmanager.NewClient(ctx, option.WithCredentialsFile(credsPath))
if err != nil {
return nil, err
}
manager := &SecretManager{client: client, memcache: cryptocache.NewMemCache()}
t := time.Now()
if err = manager.pullSecretCrypto(ctx, project, ""); err != nil {
return nil, err
}
logrus.Infof("loading of cryptomaterials took %.2f seconds", time.Since(t).Seconds())
manager.signingIdentity, err = NewVaultSigningIdentity(mspID, userCert, manager)
if err != nil {
return nil, err
}
return manager, nil
}
//nolint:funlen
func (sm *SecretManager) pullSecretCrypto(ctx context.Context, project string, keyName string) error {
if keyName != "" {
encodedSecretName := encodeSecretName(keyName)
accessSecretVersionRequest := &secretmanagerpb.AccessSecretVersionRequest{
Name: fmt.Sprintf("projects/%s/secrets/%s/versions/latest", project, encodedSecretName),
}
secretVersion, err := sm.client.AccessSecretVersion(ctx, accessSecretVersionRequest)
if err != nil {
return err
}
secretAsBytes, err := base64.StdEncoding.DecodeString(string(secretVersion.Payload.Data))
if err != nil {
return err
}
return sm.memcache.SetCrypto(keyName, secretAsBytes)
}
listSecretRequest := &secretmanagerpb.ListSecretsRequest{
Parent: fmt.Sprintf("projects/%s", project),
}
secretIterator := sm.client.ListSecrets(ctx, listSecretRequest)
for {
secret, err := secretIterator.Next()
if errors.Is(err, iterator.Done) {
break
}
if err != nil {
return fmt.Errorf("failed to list secret versions: %w", err)
}
accessSecretVersionRequest := &secretmanagerpb.AccessSecretVersionRequest{
Name: secret.Name + "/versions/latest",
}
secretVersion, err := sm.client.AccessSecretVersion(ctx, accessSecretVersionRequest)
if err != nil {
if strings.Contains(err.Error(), "secretmanager.versions.access") || strings.Contains(err.Error(), "not found or has no versions") {
continue
}
return err
}
decodedSecretName := decodeSecretName(secret.Name)
if strings.Contains(decodedSecretName, "/tls/") {
tlsIndex := strings.Index(decodedSecretName, "/tls/")
secretName := decodedSecretName[tlsIndex-strings.Index(Reverse(decodedSecretName)[len(decodedSecretName)-tlsIndex:], "/"):]
if err := sm.memcache.SetCrypto(secretName, secretVersion.Payload.Data); err != nil { // username@org/tls/cryptoname
return err
}
} else {
parts := strings.Split(decodedSecretName, "/")
if err := sm.memcache.SetCrypto(parts[len(parts)-1], secretVersion.Payload.Data); err != nil {
return err
}
}
}
return nil
}
// Reverse reverses a string
func Reverse(s string) (result string) {
for _, v := range s {
result = string(v) + result
}
return
}
// Sign signs digest using ecdsaPrivateKey
func (sm *SecretManager) Sign(digest []byte, ecdsaPrivateKey *ecdsa.PrivateKey, ecdsaPublicKey *ecdsa.PublicKey) ([]byte, error) {
r, s, err := ecdsa.Sign(rand.Reader, ecdsaPrivateKey, digest)
if err != nil {
return nil, err
}
signature, err := utils.ToLowS(ecdsaPublicKey, s)
if err != nil {
return nil, err
}
return utils.MarshalECDSASignature(r, signature)
}
// Verify verifies signature against digest using ecdsaPublicKey
func (sm *SecretManager) Verify(digest, signature []byte, ecdsaPublicKey *ecdsa.PublicKey) error {
r, s, err := utils.UnmarshalECDSASignature(signature)
if err != nil {
return fmt.Errorf("failed unmashalling signature [%w]", err)
}
lowS, err := utils.IsLowS(ecdsaPublicKey, s)
if err != nil {
return err
}
if !lowS {
return fmt.Errorf("invalid S. Must be smaller than half the order [%s][%s]", s, utils.GetCurveHalfOrdersAt(ecdsaPublicKey.Curve))
}
if ok := ecdsa.Verify(ecdsaPublicKey, digest, r, s); ok {
return nil
}
return errors.New("invalid signature")
}
// SigningIdentity returns signing identity
func (sm *SecretManager) SigningIdentity() CartridgeSigningIdentity {
return sm.signingIdentity
}
// Cache returns cache
func (sm *SecretManager) Cache() cryptocache.CryptoCache {
return sm.memcache
}