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Rename reuse/index -> ticket

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This commit is contained in:
RPRX
2025-08-11 00:24:08 +00:00
committed by GitHub
parent fc137d2612
commit 3e19bf9233
3 changed files with 32 additions and 31 deletions
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18
proxy/vless/encryption/client.go
View File

@@ -31,14 +31,14 @@ type ClientInstance struct {
minutes time.Duration
expire time.Time
baseKey []byte
reuse []byte
ticket []byte
}
type ClientConn struct {
net.Conn
instance *ClientInstance
baseKey []byte
reuse []byte
ticket []byte
random []byte
aead cipher.AEAD
nonce []byte
@@ -64,7 +64,7 @@ func (i *ClientInstance) Handshake(conn net.Conn) (net.Conn, error) {
if time.Now().Before(i.expire) {
c.instance = i
c.baseKey = i.baseKey
c.reuse = i.reuse
c.ticket = i.ticket
i.RUnlock()
return c, nil
}
@@ -94,7 +94,7 @@ func (i *ClientInstance) Handshake(conn net.Conn) (net.Conn, error) {
return nil, err
}
encapsulatedPfsKey := peerServerHello[:1088]
c.reuse = peerServerHello[1088:]
c.ticket = peerServerHello[1088:]
pfsKey, err := dKeyPfs.Decapsulate(encapsulatedPfsKey)
if err != nil {
@@ -105,7 +105,7 @@ func (i *ClientInstance) Handshake(conn net.Conn) (net.Conn, error) {
authKey := make([]byte, 32)
hkdf.New(sha256.New, c.baseKey, encapsulatedNfsKey, eKeyPfs).Read(authKey)
nonce := make([]byte, 12)
VLESS, _ := newAead(ClientCipher, authKey).Open(nil, nonce, c.reuse, encapsulatedPfsKey)
VLESS, _ := newAead(ClientCipher, authKey).Open(nil, nonce, c.ticket, encapsulatedPfsKey)
if !bytes.Equal(VLESS, []byte("VLESS")) { // TODO: more message
return nil, errors.New("invalid server").AtError()
}
@@ -114,7 +114,7 @@ func (i *ClientInstance) Handshake(conn net.Conn) (net.Conn, error) {
i.Lock()
i.expire = time.Now().Add(i.minutes)
i.baseKey = c.baseKey
i.reuse = c.reuse
i.ticket = c.ticket
i.Unlock()
}
@@ -130,12 +130,12 @@ func (c *ClientConn) Write(b []byte) (int, error) {
c.random = make([]byte, 32)
rand.Read(c.random)
key := make([]byte, 32)
hkdf.New(sha256.New, c.baseKey, c.random, c.reuse).Read(key)
hkdf.New(sha256.New, c.baseKey, c.random, c.ticket).Read(key)
c.aead = newAead(ClientCipher, key)
c.nonce = make([]byte, 12)
data = make([]byte, 21+32+5+len(b)+16)
copy(data, c.reuse)
copy(data, c.ticket)
copy(data[21:], c.random)
encodeHeader(data[53:], len(b)+16)
c.aead.Seal(data[:58], c.nonce, b, data[53:58])
@@ -200,7 +200,7 @@ func (c *ClientConn) Read(b []byte) (int, error) { // after first Write()
if err != nil {
if c.instance != nil {
c.instance.Lock()
if bytes.Equal(c.reuse, c.instance.reuse) {
if bytes.Equal(c.ticket, c.instance.ticket) {
c.instance.expire = time.Now() // expired
}
c.instance.Unlock()

34
proxy/vless/encryption/server.go
View File

@@ -34,7 +34,7 @@ type ServerConn struct {
net.Conn
cipher byte
baseKey []byte
reuse []byte
ticket []byte
peerRandom []byte
peerAead cipher.AEAD
peerNonce []byte
@@ -71,20 +71,20 @@ func (i *ServerInstance) Handshake(conn net.Conn) (net.Conn, error) {
}
c := &ServerConn{Conn: conn}
peerReuseHello := make([]byte, 21+32)
if _, err := io.ReadFull(c.Conn, peerReuseHello); err != nil {
peerTicketHello := make([]byte, 21+32)
if _, err := io.ReadFull(c.Conn, peerTicketHello); err != nil {
return nil, err
}
if i.minutes > 0 {
i.RLock()
s := i.sessions[[21]byte(peerReuseHello)]
s := i.sessions[[21]byte(peerTicketHello)]
i.RUnlock()
if s != nil {
if _, replay := s.randoms.LoadOrStore([32]byte(peerReuseHello[21:]), true); !replay {
if _, replay := s.randoms.LoadOrStore([32]byte(peerTicketHello[21:]), true); !replay {
c.cipher = s.cipher
c.baseKey = s.baseKey
c.reuse = peerReuseHello[:21]
c.peerRandom = peerReuseHello[21:]
c.ticket = peerTicketHello[:21]
c.peerRandom = peerTicketHello[21:]
return c, nil
}
}
@@ -96,11 +96,11 @@ func (i *ServerInstance) Handshake(conn net.Conn) (net.Conn, error) {
}
if l, _ := decodeHeader(peerHeader); l != 0 {
c.Conn.Write(make([]byte, crypto.RandBetween(100, 1000))) // make client do new handshake
return nil, errors.New("invalid reuse")
return nil, errors.New("invalid ticket")
}
peerClientHello := make([]byte, 1088+1184+1)
copy(peerClientHello, peerReuseHello)
copy(peerClientHello, peerTicketHello)
copy(peerClientHello[53:], peerHeader)
if _, err := io.ReadFull(c.Conn, peerClientHello[58:]); err != nil {
return nil, err
@@ -126,13 +126,13 @@ func (i *ServerInstance) Handshake(conn net.Conn) (net.Conn, error) {
authKey := make([]byte, 32)
hkdf.New(sha256.New, c.baseKey, encapsulatedNfsKey, eKeyPfsData).Read(authKey)
nonce := make([]byte, 12)
c.reuse = newAead(c.cipher, authKey).Seal(nil, nonce, []byte("VLESS"), encapsulatedPfsKey)
c.ticket = newAead(c.cipher, authKey).Seal(nil, nonce, []byte("VLESS"), encapsulatedPfsKey)
padding := crypto.RandBetween(100, 1000)
serverHello := make([]byte, 1088+21+5+padding)
copy(serverHello, encapsulatedPfsKey)
copy(serverHello[1088:], c.reuse)
copy(serverHello[1088:], c.ticket)
encodeHeader(serverHello[1109:], int(padding))
if _, err := c.Conn.Write(serverHello); err != nil {
@@ -141,7 +141,7 @@ func (i *ServerInstance) Handshake(conn net.Conn) (net.Conn, error) {
if i.minutes > 0 {
i.Lock()
i.sessions[[21]byte(c.reuse)] = &ServerSession{
i.sessions[[21]byte(c.ticket)] = &ServerSession{
expire: time.Now().Add(i.minutes),
cipher: c.cipher,
baseKey: c.baseKey,
@@ -171,12 +171,12 @@ func (c *ServerConn) Read(b []byte) (int, error) {
return 0, err
}
}
peerIndex := make([]byte, 21)
copy(peerIndex, peerHeader)
if _, err := io.ReadFull(c.Conn, peerIndex[5:]); err != nil {
peerTicket := make([]byte, 21)
copy(peerTicket, peerHeader)
if _, err := io.ReadFull(c.Conn, peerTicket[5:]); err != nil {
return 0, err
}
if !bytes.Equal(peerIndex, c.reuse) {
if !bytes.Equal(peerTicket, c.ticket) {
return 0, errors.New("naughty boy")
}
c.peerRandom = make([]byte, 32)
@@ -185,7 +185,7 @@ func (c *ServerConn) Read(b []byte) (int, error) {
}
}
peerKey := make([]byte, 32)
hkdf.New(sha256.New, c.baseKey, c.peerRandom, c.reuse).Read(peerKey)
hkdf.New(sha256.New, c.baseKey, c.peerRandom, c.ticket).Read(peerKey)
c.peerAead = newAead(c.cipher, peerKey)
c.peerNonce = make([]byte, 12)
}