Integrate OAuth2 Provider (#5378)

modules/secret/secret.go

@@ -0,0 +1,33 @@
+// Copyright 2019 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package secret
+
+import (
+	"crypto/rand"
+	"encoding/base64"
+)
+
+// New creats a new secret
+func New() (string, error) {
+	return NewWithLength(32)
+}
+
+// NewWithLength creates a new secret for a given length
+func NewWithLength(length int64) (string, error) {
+	return randomString(length)
+}
+
+func randomBytes(len int64) ([]byte, error) {
+	b := make([]byte, len)
+	if _, err := rand.Read(b); err != nil {
+		return nil, err
+	}
+	return b, nil
+}
+
+func randomString(len int64) (string, error) {
+	b, err := randomBytes(len)
+	return base64.URLEncoding.EncodeToString(b), err
+}