diff --git a/src/packet/login.rs b/src/packet/login.rs
new file mode 100644
index 0000000..248e0b9
--- /dev/null
+++ b/src/packet/login.rs
@@ -0,0 +1,182 @@
+use psopacket::pso_packet;
+use crate::{PSOPacket, PacketParseError};
+
+use std::io::{Read, Seek, SeekFrom};
+
+pub const PATCH_FILE_CHUNK_SIZE: u16 = 0x8000; // 32kb
+
+#[allow(non_camel_case_types)]
+type u8_str = u8;
+
+#[pso_packet(0x03)]
+pub struct LoginWelcome {
+    flag: u32,
+    copyright: [u8_str; 0x60],
+    server_key: [u8; 48],
+    client_key: [u8; 48],
+}
+
+impl LoginWelcome {
+    pub fn new(server_key: [u8; 48], client_key: [u8; 48]) -> LoginWelcome {
+        let mut copyright = [0u8; 0x60];
+        copyright[..0x4B].clone_from_slice(b"Phantasy Star Online Blue Burst Game Server. Copyright 1999-2004 SONICTEAM.");
+        LoginWelcome {
+            flag: 0,
+            copyright: copyright,
+            server_key: server_key,
+            client_key: client_key,
+        }
+    }
+}
+
+
+
+#[pso_packet(0x93)]
+pub struct Login {
+    pub flag: u32,
+    pub tag: u32,
+    pub guildcard: u32,
+    pub version: u16,
+    unknown1: [u8; 6],
+    pub team: u32,
+    pub username: [u8_str; 16],
+    unknown2: [u8; 32],
+    pub password: [u8_str; 16],
+    unknown3: [u8; 40],
+    pub hwinfo: [u8; 8],
+    pub security_data: [u8; 40],
+}
+
+#[derive(Debug, Clone, PartialEq)]
+pub enum AccountStatus {
+    Ok,
+    Error,
+    InvalidPassword,
+    InvalidPassword2,
+    Maintenance,
+    AlreadyOnline,
+    Banned,
+    Banned2,
+    InvalidUser,
+    PayUp,
+    Locked,
+    BadVersion,
+}
+
+impl AccountStatus {
+    const SIZE: usize = 4;
+    
+    fn to_le_bytes(&self) -> [u8; 4] {
+        [match self {
+            AccountStatus::Ok => 0,
+            AccountStatus::Error => 1,
+            AccountStatus::InvalidPassword => 2,
+            AccountStatus::InvalidPassword2 => 3,
+            AccountStatus::Maintenance => 4,
+            AccountStatus::AlreadyOnline => 5,
+            AccountStatus::Banned => 6,
+            AccountStatus::Banned2 => 7,
+            AccountStatus::InvalidUser => 8,
+            AccountStatus::PayUp => 9,
+            AccountStatus::Locked => 10,
+            AccountStatus::BadVersion => 11,
+        },0,0,0]
+    }
+
+    fn from_le_bytes(bytes: [u8; 4]) -> Result<AccountStatus, PacketParseError> {
+        match bytes[0] {
+            0 => Ok(AccountStatus::Ok),
+            1 => Ok(AccountStatus::Error),
+            2 => Ok(AccountStatus::InvalidPassword),
+            3 => Ok(AccountStatus::InvalidPassword2),
+            4 => Ok(AccountStatus::Maintenance),
+            5 => Ok(AccountStatus::AlreadyOnline),
+            6 => Ok(AccountStatus::Banned),
+            7 => Ok(AccountStatus::Banned2),
+            8 => Ok(AccountStatus::InvalidUser),
+            9 => Ok(AccountStatus::PayUp),
+            10 => Ok(AccountStatus::Locked),
+            11 => Ok(AccountStatus::BadVersion),
+            _ => Err(PacketParseError::InvalidValue),
+        }
+    }
+        
+}
+
+#[pso_packet(0xE6)]
+pub struct LoginResponse {
+    pub flag: u32,
+    pub status: AccountStatus,
+    pub tag: u32,
+    pub guildcard: u32,
+    pub team_id: u32,
+    pub security_data: [u8; 40],
+    pub caps: u32,
+}
+
+impl LoginResponse {
+    pub fn by_status(status: AccountStatus, security_data: [u8; 40]) -> LoginResponse {
+        LoginResponse {
+            flag: 0,
+            status: status,
+            tag: 0x00010000,
+            //tag: 0x00000100,
+            guildcard: 0,
+            team_id: 0,
+            security_data: security_data,
+            caps: 0x00000102,
+        }
+    }
+}
+
+
+#[pso_packet(0xE0)]
+pub struct RequestSettings {
+    flag: u32
+}
+
+
+#[pso_packet(0x19)]
+pub struct RedirectClient {
+    flag: u32,
+    ip: u32,
+    port: u16,
+    padding: u16,
+}
+
+impl RedirectClient {
+    pub fn new(ip: u32, port: u16) -> RedirectClient {
+        RedirectClient {
+            flag: 0,
+            ip: ip,
+            port: port,
+            padding: 0,
+        }
+    }
+}
+
+
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn test_account_status_enum() {
+        use super::PSOPacket;
+        let pkt = super::LoginResponse {
+            flag: 0,
+            status: super::AccountStatus::InvalidPassword,
+            tag: 0,
+            guildcard: 0,
+            team_id: 0,
+            security_data: [0; 40],
+            caps: 0,
+        };
+
+        let mut bytes = pkt.as_bytes();
+        assert!(bytes[11] == 2);
+
+        bytes[11] = 8;
+
+        let pkt = super::LoginResponse::from_bytes(&bytes).unwrap();
+        assert!(pkt.status == super::AccountStatus::InvalidUser);
+    }
+}
diff --git a/src/packet/mod.rs b/src/packet/mod.rs
new file mode 100644
index 0000000..254738f
--- /dev/null
+++ b/src/packet/mod.rs
@@ -0,0 +1,2 @@
+pub mod login;
+pub mod patch;