mirror of
https://github.com/v2fly/v2ray-core.git
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605 lines
18 KiB
Go
605 lines
18 KiB
Go
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// Copyright 2017 Google Inc. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package tls
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import (
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"crypto"
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"crypto/x509"
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"hash"
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)
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// ClientHandshakeState includes both TLS 1.3-only and TLS 1.2-only states,
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// only one of them will be used, depending on negotiated version.
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//
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// ClientHandshakeState will be converted into and from either
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// - clientHandshakeState (TLS 1.2)
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// - clientHandshakeStateTLS13 (TLS 1.3)
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// uTLS will call .handshake() on one of these private internal states,
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// to perform TLS handshake using standard crypto/tls implementation.
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type ClientHandshakeState struct {
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C *Conn
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ServerHello *ServerHelloMsg
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Hello *ClientHelloMsg
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MasterSecret []byte
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Session *ClientSessionState
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State12 TLS12OnlyState
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State13 TLS13OnlyState
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}
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// TLS 1.3 only
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type TLS13OnlyState struct {
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Suite *CipherSuiteTLS13
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EcdheParams EcdheParameters
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EarlySecret []byte
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BinderKey []byte
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CertReq *CertificateRequestMsgTLS13
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UsingPSK bool
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SentDummyCCS bool
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Transcript hash.Hash
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TrafficSecret []byte // client_application_traffic_secret_0
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}
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// TLS 1.2 and before only
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type TLS12OnlyState struct {
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FinishedHash FinishedHash
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Suite CipherSuite
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}
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func (chs *ClientHandshakeState) toPrivate13() *clientHandshakeStateTLS13 {
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if chs == nil {
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return nil
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} else {
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return &clientHandshakeStateTLS13{
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c: chs.C,
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serverHello: chs.ServerHello.getPrivatePtr(),
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hello: chs.Hello.getPrivatePtr(),
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ecdheParams: chs.State13.EcdheParams,
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session: chs.Session,
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earlySecret: chs.State13.EarlySecret,
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binderKey: chs.State13.BinderKey,
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certReq: chs.State13.CertReq.toPrivate(),
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usingPSK: chs.State13.UsingPSK,
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sentDummyCCS: chs.State13.SentDummyCCS,
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suite: chs.State13.Suite.toPrivate(),
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transcript: chs.State13.Transcript,
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masterSecret: chs.MasterSecret,
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trafficSecret: chs.State13.TrafficSecret,
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}
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}
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}
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func (chs13 *clientHandshakeStateTLS13) toPublic13() *ClientHandshakeState {
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if chs13 == nil {
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return nil
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} else {
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tls13State := TLS13OnlyState{
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EcdheParams: chs13.ecdheParams,
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EarlySecret: chs13.earlySecret,
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BinderKey: chs13.binderKey,
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CertReq: chs13.certReq.toPublic(),
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UsingPSK: chs13.usingPSK,
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SentDummyCCS: chs13.sentDummyCCS,
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Suite: chs13.suite.toPublic(),
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TrafficSecret: chs13.trafficSecret,
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Transcript: chs13.transcript,
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}
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return &ClientHandshakeState{
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C: chs13.c,
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ServerHello: chs13.serverHello.getPublicPtr(),
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Hello: chs13.hello.getPublicPtr(),
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Session: chs13.session,
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MasterSecret: chs13.masterSecret,
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State13: tls13State,
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}
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}
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}
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func (chs *ClientHandshakeState) toPrivate12() *clientHandshakeState {
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if chs == nil {
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return nil
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} else {
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return &clientHandshakeState{
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c: chs.C,
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serverHello: chs.ServerHello.getPrivatePtr(),
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hello: chs.Hello.getPrivatePtr(),
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suite: chs.State12.Suite.getPrivatePtr(),
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session: chs.Session,
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masterSecret: chs.MasterSecret,
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finishedHash: *chs.State12.FinishedHash.getPrivatePtr(),
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}
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}
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}
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func (chs12 *clientHandshakeState) toPublic13() *ClientHandshakeState {
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if chs12 == nil {
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return nil
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} else {
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tls12State := TLS12OnlyState{
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Suite: *chs12.suite.getPublicPtr(),
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FinishedHash: *chs12.finishedHash.getPublicPtr(),
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}
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return &ClientHandshakeState{
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C: chs12.c,
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ServerHello: chs12.serverHello.getPublicPtr(),
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Hello: chs12.hello.getPublicPtr(),
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Session: chs12.session,
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MasterSecret: chs12.masterSecret,
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State12: tls12State,
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}
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}
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}
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type EcdheParameters interface {
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ecdheParameters
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}
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type CertificateRequestMsgTLS13 struct {
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Raw []byte
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OcspStapling bool
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Scts bool
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SupportedSignatureAlgorithms []SignatureScheme
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SupportedSignatureAlgorithmsCert []SignatureScheme
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CertificateAuthorities [][]byte
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}
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func (crm *certificateRequestMsgTLS13) toPublic() *CertificateRequestMsgTLS13 {
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if crm == nil {
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return nil
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} else {
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return &CertificateRequestMsgTLS13{
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Raw: crm.raw,
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OcspStapling: crm.ocspStapling,
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Scts: crm.scts,
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SupportedSignatureAlgorithms: crm.supportedSignatureAlgorithms,
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SupportedSignatureAlgorithmsCert: crm.supportedSignatureAlgorithmsCert,
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CertificateAuthorities: crm.certificateAuthorities,
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}
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}
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}
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func (crm *CertificateRequestMsgTLS13) toPrivate() *certificateRequestMsgTLS13 {
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if crm == nil {
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return nil
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} else {
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return &certificateRequestMsgTLS13{
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raw: crm.Raw,
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ocspStapling: crm.OcspStapling,
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scts: crm.Scts,
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supportedSignatureAlgorithms: crm.SupportedSignatureAlgorithms,
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supportedSignatureAlgorithmsCert: crm.SupportedSignatureAlgorithmsCert,
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certificateAuthorities: crm.CertificateAuthorities,
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}
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}
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}
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type CipherSuiteTLS13 struct {
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Id uint16
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KeyLen int
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Aead func(key, fixedNonce []byte) aead
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Hash crypto.Hash
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}
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func (c *cipherSuiteTLS13) toPublic() *CipherSuiteTLS13 {
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if c == nil {
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return nil
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} else {
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return &CipherSuiteTLS13{
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Id: c.id,
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KeyLen: c.keyLen,
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Aead: c.aead,
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Hash: c.hash,
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}
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}
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}
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func (c *CipherSuiteTLS13) toPrivate() *cipherSuiteTLS13 {
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if c == nil {
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return nil
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} else {
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return &cipherSuiteTLS13{
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id: c.Id,
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keyLen: c.KeyLen,
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aead: c.Aead,
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hash: c.Hash,
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}
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}
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}
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type ServerHelloMsg struct {
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Raw []byte
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Vers uint16
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Random []byte
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SessionId []byte
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CipherSuite uint16
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CompressionMethod uint8
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NextProtoNeg bool
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NextProtos []string
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OcspStapling bool
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Scts [][]byte
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Ems bool
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TicketSupported bool
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SecureRenegotiation []byte
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SecureRenegotiationSupported bool
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AlpnProtocol string
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// 1.3
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SupportedVersion uint16
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ServerShare keyShare
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SelectedIdentityPresent bool
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SelectedIdentity uint16
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Cookie []byte // HelloRetryRequest extension
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SelectedGroup CurveID // HelloRetryRequest extension
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}
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func (shm *ServerHelloMsg) getPrivatePtr() *serverHelloMsg {
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if shm == nil {
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return nil
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} else {
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return &serverHelloMsg{
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raw: shm.Raw,
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vers: shm.Vers,
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random: shm.Random,
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sessionId: shm.SessionId,
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cipherSuite: shm.CipherSuite,
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compressionMethod: shm.CompressionMethod,
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nextProtoNeg: shm.NextProtoNeg,
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nextProtos: shm.NextProtos,
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ocspStapling: shm.OcspStapling,
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scts: shm.Scts,
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ems: shm.Ems,
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ticketSupported: shm.TicketSupported,
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secureRenegotiation: shm.SecureRenegotiation,
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secureRenegotiationSupported: shm.SecureRenegotiationSupported,
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alpnProtocol: shm.AlpnProtocol,
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supportedVersion: shm.SupportedVersion,
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serverShare: shm.ServerShare,
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selectedIdentityPresent: shm.SelectedIdentityPresent,
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selectedIdentity: shm.SelectedIdentity,
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cookie: shm.Cookie,
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selectedGroup: shm.SelectedGroup,
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}
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}
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}
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func (shm *serverHelloMsg) getPublicPtr() *ServerHelloMsg {
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if shm == nil {
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return nil
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} else {
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return &ServerHelloMsg{
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Raw: shm.raw,
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Vers: shm.vers,
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Random: shm.random,
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SessionId: shm.sessionId,
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CipherSuite: shm.cipherSuite,
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CompressionMethod: shm.compressionMethod,
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NextProtoNeg: shm.nextProtoNeg,
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NextProtos: shm.nextProtos,
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OcspStapling: shm.ocspStapling,
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Scts: shm.scts,
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Ems: shm.ems,
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TicketSupported: shm.ticketSupported,
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SecureRenegotiation: shm.secureRenegotiation,
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SecureRenegotiationSupported: shm.secureRenegotiationSupported,
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AlpnProtocol: shm.alpnProtocol,
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SupportedVersion: shm.supportedVersion,
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ServerShare: shm.serverShare,
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SelectedIdentityPresent: shm.selectedIdentityPresent,
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SelectedIdentity: shm.selectedIdentity,
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Cookie: shm.cookie,
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SelectedGroup: shm.selectedGroup,
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}
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}
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}
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type ClientHelloMsg struct {
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Raw []byte
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Vers uint16
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Random []byte
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SessionId []byte
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CipherSuites []uint16
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CompressionMethods []uint8
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NextProtoNeg bool
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ServerName string
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OcspStapling bool
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Scts bool
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Ems bool // [UTLS] actually implemented due to its prevalence
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SupportedCurves []CurveID
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SupportedPoints []uint8
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TicketSupported bool
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SessionTicket []uint8
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SupportedSignatureAlgorithms []SignatureScheme
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SecureRenegotiation []byte
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SecureRenegotiationSupported bool
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AlpnProtocols []string
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// 1.3
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SupportedSignatureAlgorithmsCert []SignatureScheme
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SupportedVersions []uint16
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Cookie []byte
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KeyShares []KeyShare
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EarlyData bool
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PskModes []uint8
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PskIdentities []pskIdentity
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PskBinders [][]byte
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}
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func (chm *ClientHelloMsg) getPrivatePtr() *clientHelloMsg {
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if chm == nil {
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return nil
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} else {
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return &clientHelloMsg{
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raw: chm.Raw,
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vers: chm.Vers,
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random: chm.Random,
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sessionId: chm.SessionId,
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cipherSuites: chm.CipherSuites,
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compressionMethods: chm.CompressionMethods,
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nextProtoNeg: chm.NextProtoNeg,
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serverName: chm.ServerName,
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ocspStapling: chm.OcspStapling,
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scts: chm.Scts,
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ems: chm.Ems,
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supportedCurves: chm.SupportedCurves,
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supportedPoints: chm.SupportedPoints,
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ticketSupported: chm.TicketSupported,
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sessionTicket: chm.SessionTicket,
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supportedSignatureAlgorithms: chm.SupportedSignatureAlgorithms,
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secureRenegotiation: chm.SecureRenegotiation,
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secureRenegotiationSupported: chm.SecureRenegotiationSupported,
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alpnProtocols: chm.AlpnProtocols,
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supportedSignatureAlgorithmsCert: chm.SupportedSignatureAlgorithmsCert,
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supportedVersions: chm.SupportedVersions,
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cookie: chm.Cookie,
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keyShares: KeyShares(chm.KeyShares).ToPrivate(),
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earlyData: chm.EarlyData,
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pskModes: chm.PskModes,
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pskIdentities: chm.PskIdentities,
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pskBinders: chm.PskBinders,
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}
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}
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}
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func (chm *clientHelloMsg) getPublicPtr() *ClientHelloMsg {
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if chm == nil {
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return nil
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} else {
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return &ClientHelloMsg{
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Raw: chm.raw,
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Vers: chm.vers,
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Random: chm.random,
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SessionId: chm.sessionId,
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CipherSuites: chm.cipherSuites,
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CompressionMethods: chm.compressionMethods,
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NextProtoNeg: chm.nextProtoNeg,
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ServerName: chm.serverName,
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OcspStapling: chm.ocspStapling,
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Scts: chm.scts,
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Ems: chm.ems,
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SupportedCurves: chm.supportedCurves,
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SupportedPoints: chm.supportedPoints,
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TicketSupported: chm.ticketSupported,
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SessionTicket: chm.sessionTicket,
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SupportedSignatureAlgorithms: chm.supportedSignatureAlgorithms,
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SecureRenegotiation: chm.secureRenegotiation,
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SecureRenegotiationSupported: chm.secureRenegotiationSupported,
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AlpnProtocols: chm.alpnProtocols,
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SupportedSignatureAlgorithmsCert: chm.supportedSignatureAlgorithmsCert,
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SupportedVersions: chm.supportedVersions,
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Cookie: chm.cookie,
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KeyShares: keyShares(chm.keyShares).ToPublic(),
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EarlyData: chm.earlyData,
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PskModes: chm.pskModes,
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PskIdentities: chm.pskIdentities,
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PskBinders: chm.pskBinders,
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}
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}
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}
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// A CipherSuite is a specific combination of key agreement, cipher and MAC
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// function. All cipher suites currently assume RSA key agreement.
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type CipherSuite struct {
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Id uint16
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// the lengths, in bytes, of the key material needed for each component.
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KeyLen int
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MacLen int
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IvLen int
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Ka func(version uint16) keyAgreement
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// flags is a bitmask of the suite* values, above.
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Flags int
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Cipher func(key, iv []byte, isRead bool) interface{}
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Mac func(version uint16, macKey []byte) macFunction
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Aead func(key, fixedNonce []byte) aead
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}
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func (cs *CipherSuite) getPrivatePtr() *cipherSuite {
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if cs == nil {
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return nil
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} else {
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return &cipherSuite{
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id: cs.Id,
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keyLen: cs.KeyLen,
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macLen: cs.MacLen,
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ivLen: cs.IvLen,
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ka: cs.Ka,
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flags: cs.Flags,
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cipher: cs.Cipher,
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mac: cs.Mac,
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aead: cs.Aead,
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}
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}
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}
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func (cs *cipherSuite) getPublicPtr() *CipherSuite {
|
||
|
if cs == nil {
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return nil
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} else {
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||
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return &CipherSuite{
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Id: cs.id,
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||
|
KeyLen: cs.keyLen,
|
||
|
MacLen: cs.macLen,
|
||
|
IvLen: cs.ivLen,
|
||
|
Ka: cs.ka,
|
||
|
Flags: cs.flags,
|
||
|
Cipher: cs.cipher,
|
||
|
Mac: cs.mac,
|
||
|
Aead: cs.aead,
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
// A FinishedHash calculates the hash of a set of handshake messages suitable
|
||
|
// for including in a Finished message.
|
||
|
type FinishedHash struct {
|
||
|
Client hash.Hash
|
||
|
Server hash.Hash
|
||
|
|
||
|
// Prior to TLS 1.2, an additional MD5 hash is required.
|
||
|
ClientMD5 hash.Hash
|
||
|
ServerMD5 hash.Hash
|
||
|
|
||
|
// In TLS 1.2, a full buffer is sadly required.
|
||
|
Buffer []byte
|
||
|
|
||
|
Version uint16
|
||
|
Prf func(result, secret, label, seed []byte)
|
||
|
}
|
||
|
|
||
|
func (fh *FinishedHash) getPrivatePtr() *finishedHash {
|
||
|
if fh == nil {
|
||
|
return nil
|
||
|
} else {
|
||
|
return &finishedHash{
|
||
|
client: fh.Client,
|
||
|
server: fh.Server,
|
||
|
clientMD5: fh.ClientMD5,
|
||
|
serverMD5: fh.ServerMD5,
|
||
|
buffer: fh.Buffer,
|
||
|
version: fh.Version,
|
||
|
prf: fh.Prf,
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
func (fh *finishedHash) getPublicPtr() *FinishedHash {
|
||
|
if fh == nil {
|
||
|
return nil
|
||
|
} else {
|
||
|
return &FinishedHash{
|
||
|
Client: fh.client,
|
||
|
Server: fh.server,
|
||
|
ClientMD5: fh.clientMD5,
|
||
|
ServerMD5: fh.serverMD5,
|
||
|
Buffer: fh.buffer,
|
||
|
Version: fh.version,
|
||
|
Prf: fh.prf}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
// TLS 1.3 Key Share. See RFC 8446, Section 4.2.8.
|
||
|
type KeyShare struct {
|
||
|
Group CurveID
|
||
|
Data []byte
|
||
|
}
|
||
|
|
||
|
type KeyShares []KeyShare
|
||
|
type keyShares []keyShare
|
||
|
|
||
|
func (kss keyShares) ToPublic() []KeyShare {
|
||
|
var KSS []KeyShare
|
||
|
for _, ks := range kss {
|
||
|
KSS = append(KSS, KeyShare{Data: ks.data, Group: ks.group})
|
||
|
}
|
||
|
return KSS
|
||
|
}
|
||
|
func (KSS KeyShares) ToPrivate() []keyShare {
|
||
|
var kss []keyShare
|
||
|
for _, KS := range KSS {
|
||
|
kss = append(kss, keyShare{data: KS.Data, group: KS.Group})
|
||
|
}
|
||
|
return kss
|
||
|
}
|
||
|
|
||
|
// ClientSessionState is public, but all its fields are private. Let's add setters, getters and constructor
|
||
|
|
||
|
// ClientSessionState contains the state needed by clients to resume TLS sessions.
|
||
|
func MakeClientSessionState(
|
||
|
SessionTicket []uint8,
|
||
|
Vers uint16,
|
||
|
CipherSuite uint16,
|
||
|
MasterSecret []byte,
|
||
|
ServerCertificates []*x509.Certificate,
|
||
|
VerifiedChains [][]*x509.Certificate) *ClientSessionState {
|
||
|
css := ClientSessionState{sessionTicket: SessionTicket,
|
||
|
vers: Vers,
|
||
|
cipherSuite: CipherSuite,
|
||
|
masterSecret: MasterSecret,
|
||
|
serverCertificates: ServerCertificates,
|
||
|
verifiedChains: VerifiedChains}
|
||
|
return &css
|
||
|
}
|
||
|
|
||
|
// Encrypted ticket used for session resumption with server
|
||
|
func (css *ClientSessionState) SessionTicket() []uint8 {
|
||
|
return css.sessionTicket
|
||
|
}
|
||
|
|
||
|
// SSL/TLS version negotiated for the session
|
||
|
func (css *ClientSessionState) Vers() uint16 {
|
||
|
return css.vers
|
||
|
}
|
||
|
|
||
|
// Ciphersuite negotiated for the session
|
||
|
func (css *ClientSessionState) CipherSuite() uint16 {
|
||
|
return css.cipherSuite
|
||
|
}
|
||
|
|
||
|
// MasterSecret generated by client on a full handshake
|
||
|
func (css *ClientSessionState) MasterSecret() []byte {
|
||
|
return css.masterSecret
|
||
|
}
|
||
|
|
||
|
// Certificate chain presented by the server
|
||
|
func (css *ClientSessionState) ServerCertificates() []*x509.Certificate {
|
||
|
return css.serverCertificates
|
||
|
}
|
||
|
|
||
|
// Certificate chains we built for verification
|
||
|
func (css *ClientSessionState) VerifiedChains() [][]*x509.Certificate {
|
||
|
return css.verifiedChains
|
||
|
}
|
||
|
|
||
|
func (css *ClientSessionState) SetSessionTicket(SessionTicket []uint8) {
|
||
|
css.sessionTicket = SessionTicket
|
||
|
}
|
||
|
func (css *ClientSessionState) SetVers(Vers uint16) {
|
||
|
css.vers = Vers
|
||
|
}
|
||
|
func (css *ClientSessionState) SetCipherSuite(CipherSuite uint16) {
|
||
|
css.cipherSuite = CipherSuite
|
||
|
}
|
||
|
func (css *ClientSessionState) SetMasterSecret(MasterSecret []byte) {
|
||
|
css.masterSecret = MasterSecret
|
||
|
}
|
||
|
func (css *ClientSessionState) SetServerCertificates(ServerCertificates []*x509.Certificate) {
|
||
|
css.serverCertificates = ServerCertificates
|
||
|
}
|
||
|
func (css *ClientSessionState) SetVerifiedChains(VerifiedChains [][]*x509.Certificate) {
|
||
|
css.verifiedChains = VerifiedChains
|
||
|
}
|