diff --git a/src/main/resources/mapper/TorrentMapper.xml b/src/main/resources/mapper/TorrentMapper.xml
new file mode 100644
index 0000000..9b53d29
--- /dev/null
+++ b/src/main/resources/mapper/TorrentMapper.xml
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
+        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+
+<mapper namespace="com.example.g8backend.mapper.TorrentMapper">
+    <insert id="insertTorrent" >
+        INSERT INTO torrents (user_id, torrent_name, info_hash, file_size)
+        VALUES (#{userId}, #{torrentName}, UNHEX(#{infoHash}), #{fileSize})
+    </insert>
+
+    <select id="getTorrentByInfoHash" resultType="com.example.g8backend.entity.Torrent">
+        SELECT
+            torrent_id,
+            user_id,
+            torrent_name,
+            HEX(info_hash) AS infoHash,
+            file_size
+        FROM torrents
+        WHERE info_hash = UNHEX(#{infoHash})
+    </select>
+
+    <select id="getTorrentByTorrentId" resultType="com.example.g8backend.entity.Torrent">
+        SELECT
+            torrent_id,
+            user_id,
+            torrent_name,
+            HEX(info_hash) AS infoHash,
+            file_size
+        FROM torrents
+        WHERE torrent_id = #{torrentId}
+    </select>
+</mapper>
\ No newline at end of file
diff --git a/src/main/resources/mapper/UserMapper.xml b/src/main/resources/mapper/UserMapper.xml
index 314c087..9627647 100644
--- a/src/main/resources/mapper/UserMapper.xml
+++ b/src/main/resources/mapper/UserMapper.xml
@@ -9,4 +9,7 @@
     <select id="getUserByEmail" resultType="com.example.g8backend.entity.User">
         SELECT * FROM users WHERE email = #{email}
     </select>
+    <select id="getUserByPasskey" resultType="com.example.g8backend.entity.User">
+        SELECT * FROM users WHERE passkey = #{passkey}
+    </select>
 </mapper>
\ No newline at end of file
diff --git a/src/main/resources/schema.sql b/src/main/resources/schema.sql
index 2018117..365f9e7 100644
--- a/src/main/resources/schema.sql
+++ b/src/main/resources/schema.sql
@@ -2,7 +2,8 @@
   user_id INT AUTO_INCREMENT PRIMARY KEY,
   user_name VARCHAR(255) NOT NULL,
   password VARCHAR(255) NOT NULL,
-  email VARCHAR(255) NOT NULL UNIQUE
+  email VARCHAR(255) NOT NULL UNIQUE,
+  passkey VARCHAR(255) NOT NULL UNIQUE
 );
 
 CREATE TABLE IF NOT EXISTS `torrents` (
@@ -15,7 +16,7 @@
 );
 
 CREATE TABLE IF NOT EXISTS `peers` (
-  user_id INT NOT NULL,
+  passkey VARCHAR(255) NOT NULL,
   info_hash BINARY(20) NOT NULL,
   peer_id VARCHAR(20) NOT NULL,
   ip_address VARCHAR(128) NOT NULL,
@@ -23,6 +24,6 @@
   uploaded FLOAT NOT NULL,
   downloaded FLOAT NOT NULL,
   last_seen TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
-  FOREIGN KEY (user_id) REFERENCES users(user_id),
-  PRIMARY KEY (user_id, info_hash, peer_id)
+  FOREIGN KEY (passkey) REFERENCES users(passkey),
+  PRIMARY KEY (passkey, info_hash, peer_id)
 );