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feat: bulit-in qtls cipher suite implementation

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This commit is contained in:
AkinoKaede
2023-07-17 12:38:25 +08:00
parent 093d7b0b6f
commit 8c5bcacb99
6 changed files with 30 additions and 41 deletions
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23
common/protocol/quic/cipher_suite.go Normal file
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@@ -0,0 +1,23 @@
package quic
import (
"crypto"
"crypto/cipher"
_ "crypto/tls"
_ "unsafe"
)
// copied from github.com/quic-go/quic-go/internal/qtls/cipher_suite_go121.go
type cipherSuiteTLS13 struct {
ID uint16
KeyLen int
AEAD func(key, fixedNonce []byte) cipher.AEAD
Hash crypto.Hash
}
// github.com/quic-go/quic-go/internal/handshake/cipher_suite.go describes these cipher suite implementations are copied from the standard library crypto/tls package.
// So we can user go:linkname to implement the same feature.
//go:linkname aeadAESGCMTLS13 crypto/tls.aeadAESGCMTLS13
func aeadAESGCMTLS13(key, nonceMask []byte) cipher.AEAD

18
common/protocol/quic/qtls_go119.go
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@@ -1,18 +0,0 @@
//go:build go1.19 && !go1.20
package quic
import (
"crypto/cipher"
"github.com/quic-go/qtls-go1-19"
)
type (
// A CipherSuiteTLS13 is a cipher suite for TLS 1.3
CipherSuiteTLS13 = qtls.CipherSuiteTLS13
)
func AEADAESGCMTLS13(key, fixedNonce []byte) cipher.AEAD {
return qtls.AEADAESGCMTLS13(key, fixedNonce)
}

18
common/protocol/quic/qtls_go120.go
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@@ -1,18 +0,0 @@
//go:build go1.20
package quic
import (
"crypto/cipher"
"github.com/quic-go/qtls-go1-20"
)
type (
// A CipherSuiteTLS13 is a cipher suite for TLS 1.3
CipherSuiteTLS13 = qtls.CipherSuiteTLS13
)
func AEADAESGCMTLS13(key, fixedNonce []byte) cipher.AEAD {
return qtls.AEADAESGCMTLS13(key, fixedNonce)
}

6
common/protocol/quic/sniff.go
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@@ -37,10 +37,10 @@ const (
var (
quicSaltOld = []byte{0xaf, 0xbf, 0xec, 0x28, 0x99, 0x93, 0xd2, 0x4c, 0x9e, 0x97, 0x86, 0xf1, 0x9c, 0x61, 0x11, 0xe0, 0x43, 0x90, 0xa8, 0x99}
quicSalt = []byte{0x38, 0x76, 0x2c, 0xf7, 0xf5, 0x59, 0x34, 0xb3, 0x4d, 0x17, 0x9a, 0xe6, 0xa4, 0xc8, 0x0c, 0xad, 0xcc, 0xbb, 0x7f, 0x0a}
initialSuite = &CipherSuiteTLS13{
initialSuite = &cipherSuiteTLS13{
ID: tls.TLS_AES_128_GCM_SHA256,
KeyLen: 16,
AEAD: AEADAESGCMTLS13,
AEAD: aeadAESGCMTLS13,
Hash: crypto.SHA256,
}
errNotQuic = errors.New("not quic")
@@ -153,7 +153,7 @@ func SniffQUIC(b []byte) (*SniffHeader, error) {
key := hkdfExpandLabel(crypto.SHA256, secret, []byte{}, "quic key", 16)
iv := hkdfExpandLabel(crypto.SHA256, secret, []byte{}, "quic iv", 12)
cipher := AEADAESGCMTLS13(key, iv)
cipher := aeadAESGCMTLS13(key, iv)
nonce := cache.Extend(int32(cipher.NonceSize()))
binary.BigEndian.PutUint64(nonce[len(nonce)-8:], uint64(packetNumber))
decrypted, err := cipher.Open(b[extHdrLen:extHdrLen], nonce, data, b[:extHdrLen])