diff --git a/src/db/repository/auth.rs b/src/db/repository/auth.rs
index 8bd7905..3aafa05 100644
--- a/src/db/repository/auth.rs
+++ b/src/db/repository/auth.rs
@@ -1,6 +1,5 @@
 use chrono::DateTime;
 use diesel::prelude::*;
-use rand::Rng;
 
 use super::SqliteRepository;
 use crate::{
@@ -30,113 +29,6 @@ impl From<db::User> for gpodder::User {
     }
 }
 
-impl gpodder::AuthRepository for SqliteRepository {
-    fn validate_credentials(
-        &self,
-        username: &str,
-        password: &str,
-    ) -> Result<gpodder::models::User, AuthErr> {
-        if let Some(user) = users::table
-            .select(db::User::as_select())
-            .filter(users::username.eq(username))
-            .first(&mut self.pool.get()?)
-            .optional()?
-        {
-            if user.verify_password(password) {
-                Ok(gpodder::User {
-                    id: user.id,
-                    username: user.username,
-                    password_hash: user.password_hash,
-                })
-            } else {
-                Err(gpodder::AuthErr::InvalidPassword)
-            }
-        } else {
-            Err(gpodder::AuthErr::UnknownUser)
-        }
-    }
-
-    fn validate_session(&self, session_id: i64) -> Result<gpodder::User, gpodder::AuthErr> {
-        match sessions::dsl::sessions
-            .inner_join(users::table)
-            .filter(sessions::id.eq(session_id))
-            .select(db::User::as_select())
-            .get_result(&mut self.pool.get()?)
-        {
-            Ok(user) => Ok(gpodder::User {
-                id: user.id,
-                username: user.username,
-                password_hash: user.password_hash,
-            }),
-            Err(diesel::result::Error::NotFound) => Err(gpodder::AuthErr::UnknownSession),
-            Err(err) => Err(gpodder::AuthErr::Other(Box::new(err))),
-        }
-    }
-
-    fn create_session(
-        &self,
-        username: &str,
-        password: &str,
-    ) -> Result<(i64, gpodder::models::User), gpodder::AuthErr> {
-        if let Some(user) = users::table
-            .select(db::User::as_select())
-            .filter(users::username.eq(username))
-            .first(&mut self.pool.get()?)
-            .optional()?
-        {
-            if user.verify_password(password) {
-                let id: i64 = rand::thread_rng().gen();
-
-                let session_id = db::Session {
-                    id,
-                    user_id: user.id,
-                    last_seen: chrono::Utc::now().timestamp(),
-                }
-                .insert_into(sessions::table)
-                .returning(sessions::id)
-                .get_result(&mut self.pool.get()?)?;
-
-                Ok((
-                    session_id,
-                    gpodder::User {
-                        id: user.id,
-                        username: user.username,
-                        password_hash: user.password_hash,
-                    },
-                ))
-            } else {
-                Err(gpodder::AuthErr::InvalidPassword)
-            }
-        } else {
-            Err(gpodder::AuthErr::UnknownUser)
-        }
-    }
-
-    fn remove_session(&self, username: &str, session_id: i64) -> Result<(), gpodder::AuthErr> {
-        let conn = &mut self.pool.get()?;
-
-        if let Some(user) = sessions::table
-            .inner_join(users::table)
-            .filter(sessions::id.eq(session_id))
-            .select(db::User::as_select())
-            .get_result(conn)
-            .optional()?
-        {
-            if user.username == username {
-                Ok(
-                    diesel::delete(sessions::table.filter(sessions::id.eq(session_id)))
-                        .execute(conn)
-                        .map(|_| ())?,
-                )
-            } else {
-                Err(AuthErr::UnknownUser)
-            }
-        } else {
-            Ok(())
-        }
-    }
-}
-
 impl gpodder::AuthStore for SqliteRepository {
     fn get_user(&self, username: &str) -> Result<Option<gpodder::models::User>, AuthErr> {
         Ok(users::table
diff --git a/src/gpodder/mod.rs b/src/gpodder/mod.rs
index d8ff790..fe904d4 100644
--- a/src/gpodder/mod.rs
+++ b/src/gpodder/mod.rs
@@ -38,24 +38,6 @@ impl<T> Store for T where
 {
 }
 
-pub trait AuthRepository {
-    /// Validate the given session ID and return its user.
-    fn validate_session(&self, session_id: i64) -> Result<models::User, AuthErr>;
-
-    /// Validate the credentials, returning the user if the credentials are correct.
-    fn validate_credentials(&self, username: &str, password: &str)
-        -> Result<models::User, AuthErr>;
-
-    /// Create a new session for the given user.
-    fn create_session(
-        &self,
-        username: &str,
-        password: &str,
-    ) -> Result<(i64, models::User), AuthErr>;
-
-    fn remove_session(&self, username: &str, session_id: i64) -> Result<(), AuthErr>;
-}
-
 pub trait AuthStore {
     /// Retrieve the session with the given session ID
     fn get_session(&self, session_id: i64) -> Result<Option<models::Session>, AuthErr>;