4 files changed, 55 insertions, 1 deletions
diff --git a/lib/public/User/Backend/ICountUsersBackend.php b/lib/public/User/Backend/ICountUsersBackend.php
index e337147dd14..194cf465cbe 100644
--- a/lib/public/User/Backend/ICountUsersBackend.php
+++ b/lib/public/User/Backend/ICountUsersBackend.php
@@ -10,6 +10,7 @@ namespace OCP\User\Backend;
 
 /**
  * @since 14.0.0
+ * @deprecated 31.0.0 use and implement ILimitAwareCountUsersBackend instead.
  */
 interface ICountUsersBackend {
 	/**
diff --git a/lib/public/User/Backend/IGetRealUIDBackend.php b/lib/public/User/Backend/IGetRealUIDBackend.php
index 08ac09f2b5c..8041043f7d5 100644
--- a/lib/public/User/Backend/IGetRealUIDBackend.php
+++ b/lib/public/User/Backend/IGetRealUIDBackend.php
@@ -17,7 +17,7 @@ interface IGetRealUIDBackend {
 	 * For example the database backend accepts different cased UIDs in all the functions
 	 * but the internal UID that is to be used should be correctly cased.
 	 *
-	 * This little function makes sure that the used UID will be correct hen using the user object
+	 * This little function makes sure that the used UID will be correct when using the user object
 	 *
 	 * @since 17.0.0
 	 * @param string $uid
diff --git a/lib/public/User/Backend/ILimitAwareCountUsersBackend.php b/lib/public/User/Backend/ILimitAwareCountUsersBackend.php
new file mode 100644
index 00000000000..a59c0bd8e04
--- /dev/null
+++ b/lib/public/User/Backend/ILimitAwareCountUsersBackend.php
@@ -0,0 +1,23 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2025 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OCP\User\Backend;
+
+/**
+ * @since 31.0.0
+ */
+interface ILimitAwareCountUsersBackend extends ICountUsersBackend {
+	/**
+	 * @since 31.0.0
+	 *
+	 * @param int $limit Limit to stop counting users if there are more than $limit. 0 to disable limiting.
+	 * @return int|false The number of users (may be limited to $limit) on success false on failure
+	 */
+	public function countUsers(int $limit = 0): int|false;
+}
diff --git a/lib/public/User/Backend/IPasswordHashBackend.php b/lib/public/User/Backend/IPasswordHashBackend.php
new file mode 100644
index 00000000000..2525b4e45ea
--- /dev/null
+++ b/lib/public/User/Backend/IPasswordHashBackend.php
@@ -0,0 +1,30 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OCP\User\Backend;
+
+use InvalidArgumentException;
+
+/**
+ * @since 30.0.0
+ */
+interface IPasswordHashBackend {
+	/**
+	 * @return ?string the password hash hashed by `\OCP\Security\IHasher::hash()`
+	 * @since 30.0.0
+	 */
+	public function getPasswordHash(string $userId): ?string;
+
+	/**
+	 * @param string $passwordHash the password hash hashed by `\OCP\Security\IHasher::hash()`
+	 * @throws InvalidArgumentException when `$passwordHash` is not a valid hash
+	 * @since 30.0.0
+	 */
+	public function setPasswordHash(string $userId, string $passwordHash): bool;
+}