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REALITY protocol: Remove ChaCha20-Poly1305 support for REALITY's session id auth

Browse source 
https://github.com/XTLS/Xray-core/pull/3813#issuecomment-2885686468

https://github.com/XTLS/REALITY/pull/4#issuecomment-2885815235

Reverts 65b467e448
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RPRX 2025-05-16 07:29:05 +00:00 • committed by GitHub
parent 7ddc4a2525
commit 09d84c42e9
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3 changed files with 5 additions and 16 deletions
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13
transport/internet/reality/reality.go
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@ -30,14 +30,10 @@ import (
"github.com/xtls/xray-core/common/net"
"github.com/xtls/xray-core/core"
"github.com/xtls/xray-core/transport/internet/tls"
"golang.org/x/crypto/chacha20poly1305"
"golang.org/x/crypto/hkdf"
"golang.org/x/net/http2"
)
//go:linkname aesgcmPreferred github.com/refraction-networking/utls.aesgcmPreferred
func aesgcmPreferred(ciphers []uint16) bool
type Conn struct {
*reality.Conn
}
@ -147,13 +143,8 @@ func UClient(c net.Conn, config *Config, ctx context.Context, dest net.Destinati
if _, err := hkdf.New(sha256.New, uConn.AuthKey, hello.Random[:20], []byte("REALITY")).Read(uConn.AuthKey); err != nil {
return nil, err
}
var aead cipher.AEAD
if aesgcmPreferred(hello.CipherSuites) {
block, _ := aes.NewCipher(uConn.AuthKey)
aead, _ = cipher.NewGCM(block)
} else {
aead, _ = chacha20poly1305.New(uConn.AuthKey)
}
block, _ := aes.NewCipher(uConn.AuthKey)
aead, _ := cipher.NewGCM(block)
if config.Show {
errors.LogInfo(ctx, fmt.Sprintf("REALITY localAddr: %v\tuConn.AuthKey[:16]: %v\tAEAD: %T\n", localAddr, uConn.AuthKey[:16], aead))
}