New Admin Info (#8497)

cmd/crypto/kms.go

@@ -102,6 +102,9 @@ type KMS interface {
 	// keys this method may behave like a NOP and just return the sealedKey
 	// itself.
 	UpdateKey(keyID string, sealedKey []byte, context Context) (rotatedKey []byte, err error)
+
+	// Returns KMSInfo
+	Info() (kmsInfo KMSInfo)
 }
 
 type masterKeyKMS struct {
@@ -109,6 +112,13 @@ type masterKeyKMS struct {
 	masterKey [32]byte
 }
 
+// KMSInfo stores the details of KMS
+type KMSInfo struct {
+	Endpoint string
+	Name     string
+	AuthType string
+}
+
 // NewMasterKey returns a basic KMS implementation from a single 256 bit master key.
 //
 // The KMS accepts any keyID but binds the keyID and context cryptographically
@@ -135,6 +145,15 @@ func (kms *masterKeyKMS) GenerateKey(keyID string, ctx Context) (key [32]byte, s
 	return key, sealedKey, nil
 }
 
+// KMS is configured directly using master key
+func (kms *masterKeyKMS) Info() (info KMSInfo) {
+	return KMSInfo{
+		Endpoint: "",
+		Name:     "",
+		AuthType: "master-key",
+	}
+}
+
 func (kms *masterKeyKMS) UnsealKey(keyID string, sealedKey []byte, ctx Context) (key [32]byte, err error) {
 	var (
 		buffer     bytes.Buffer

cmd/crypto/vault.go

@@ -195,6 +195,15 @@ func (v *vaultService) KeyID() string {
 	return v.config.Key.Name
 }
 
+// Returns - vault info
+func (v *vaultService) Info() (kmsInfo KMSInfo) {
+	return KMSInfo{
+		Endpoint: v.config.Endpoint,
+		Name:     v.config.Key.Name,
+		AuthType: v.config.Auth.Type,
+	}
+}
+
 // GenerateKey returns a new plaintext key, generated by the KMS,
 // and a sealed version of this plaintext key encrypted using the
 // named key referenced by keyID. It also binds the generated key