Initial QSfera import

Server/vendor/github.com/libregraph/lico/encryption/generate.go

@@ -0,0 +1,45 @@
+/*
+ * Copyright 2017-2019 Kopano and its licensors
+ *
+ * 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 (
+	"crypto/rand"
+	"io"
+)
+
+// GenerateKey generates a new random secret key.
+func GenerateKey() (*[KeySize]byte, error) {
+	key := new([KeySize]byte)
+	_, err := io.ReadFull(rand.Reader, key[:])
+	if err != nil {
+		return nil, err
+	}
+
+	return key, nil
+}
+
+// GenerateNonce creates a new random nonce.
+func GenerateNonce() (*[NonceSize]byte, error) {
+	nonce := new([NonceSize]byte)
+	_, err := io.ReadFull(rand.Reader, nonce[:])
+	if err != nil {
+		return nil, err
+	}
+
+	return nonce, nil
+}