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XTLS_REALITY/defaults.go
yuhan6665 e27f1d3a30 crypto/tls: move defaults into defaults.go
Fixes #65265
Updates #60790

Change-Id: Iaa5f475d614d3ed87f091c93a3f888b7eb3433f2
Reviewed-on: https://go-review.googlesource.com/c/go/+/587296
Auto-Submit: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Roland Shoemaker <roland@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Derek Parker <parkerderek86@gmail.com>
2024-09-09 11:32:16 -04:00

106 lines
3.1 KiB
Go

// Copyright 2024 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package reality
import (
"slices"
)
// Defaults are collected in this file to allow distributions to more easily patch
// them to apply local policies.
//var tlskyber = godebug.New("tlskyber")
func defaultCurvePreferences() []CurveID {
if false {
return []CurveID{X25519, CurveP256, CurveP384, CurveP521}
}
// For now, x25519Kyber768Draft00 must always be followed by X25519.
return []CurveID{x25519Kyber768Draft00, X25519, CurveP256, CurveP384, CurveP521}
}
// defaultSupportedSignatureAlgorithms contains the signature and hash algorithms that
// the code advertises as supported in a TLS 1.2+ ClientHello and in a TLS 1.2+
// CertificateRequest. The two fields are merged to match with TLS 1.3.
// Note that in TLS 1.2, the ECDSA algorithms are not constrained to P-256, etc.
var defaultSupportedSignatureAlgorithms = []SignatureScheme{
PSSWithSHA256,
ECDSAWithP256AndSHA256,
Ed25519,
PSSWithSHA384,
PSSWithSHA512,
PKCS1WithSHA256,
PKCS1WithSHA384,
PKCS1WithSHA512,
ECDSAWithP384AndSHA384,
ECDSAWithP521AndSHA512,
PKCS1WithSHA1,
ECDSAWithSHA1,
}
//var tlsrsakex = godebug.New("tlsrsakex")
//var tls3des = godebug.New("tls3des")
func defaultCipherSuites() []uint16 {
suites := slices.Clone(cipherSuitesPreferenceOrder)
return slices.DeleteFunc(suites, func(c uint16) bool {
return disabledCipherSuites[c] ||
rsaKexCiphers[c] ||
tdesCiphers[c]
})
}
// defaultCipherSuitesTLS13 is also the preference order, since there are no
// disabled by default TLS 1.3 cipher suites. The same AES vs ChaCha20 logic as
// cipherSuitesPreferenceOrder applies.
var defaultCipherSuitesTLS13 = []uint16{
TLS_AES_128_GCM_SHA256,
TLS_AES_256_GCM_SHA384,
TLS_CHACHA20_POLY1305_SHA256,
}
var defaultCipherSuitesTLS13NoAES = []uint16{
TLS_CHACHA20_POLY1305_SHA256,
TLS_AES_128_GCM_SHA256,
TLS_AES_256_GCM_SHA384,
}
var defaultSupportedVersionsFIPS = []uint16{
VersionTLS12,
}
// defaultCurvePreferencesFIPS are the FIPS-allowed curves,
// in preference order (most preferable first).
var defaultCurvePreferencesFIPS = []CurveID{CurveP256, CurveP384, CurveP521}
// defaultSupportedSignatureAlgorithmsFIPS currently are a subset of
// defaultSupportedSignatureAlgorithms without Ed25519 and SHA-1.
var defaultSupportedSignatureAlgorithmsFIPS = []SignatureScheme{
PSSWithSHA256,
PSSWithSHA384,
PSSWithSHA512,
PKCS1WithSHA256,
ECDSAWithP256AndSHA256,
PKCS1WithSHA384,
ECDSAWithP384AndSHA384,
PKCS1WithSHA512,
ECDSAWithP521AndSHA512,
}
// defaultCipherSuitesFIPS are the FIPS-allowed cipher suites.
var defaultCipherSuitesFIPS = []uint16{
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
TLS_RSA_WITH_AES_128_GCM_SHA256,
TLS_RSA_WITH_AES_256_GCM_SHA384,
}
// defaultCipherSuitesTLS13FIPS are the FIPS-allowed cipher suites for TLS 1.3.
var defaultCipherSuitesTLS13FIPS = []uint16{
TLS_AES_128_GCM_SHA256,
TLS_AES_256_GCM_SHA384,
}