当我使用System.Net.WebRequest进行TLS 1.2请求时，出现异常The request was aborted: Could not create SSL/TLS secure channel.和协议错误Handshake Failure。
使用Internet Explorer和Chrome进行TLS 1.2连接和身份验证是可行的。 OpenSSL可以通过TLS 1.2连接到此端点。
设置
- 使用ClientCertificates进行身份验证
- 使用非默认端口
- 使用TLS 1.2
- 端点是一个haproxy，但它是一个黑盒子
- .NET 4.7和C#
代码片段
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
var req = WebRequest.Create($"https://{host}:{port}");
((HttpWebRequest)req).ClientCertificates = new X509Certificate2Collection(GetCertificate());
var requestStream = req.GetRequestStream();
方法
GetCertificate()返回嵌入在此软件中的带有私钥的证书。
Wireshark
按顺序输出的wireshark文本。
客户端Hello
Secure Sockets Layer
TLSv1.2 Record Layer: Handshake Protocol: Client Hello
Content Type: Handshake (22)
Version: TLS 1.2 (0x0303)
Length: 207
Handshake Protocol: Client Hello
Handshake Type: Client Hello (1)
Length: 203
Version: TLS 1.2 (0x0303)
Random: 5a292ab72d2173fc286aebe2c4cc991ee619e1cc81b5bb39...
Session ID Length: 0
Cipher Suites Length: 60
Cipher Suites (30 suites)
Compression Methods Length: 1
Compression Methods (1 method)
Extensions Length: 102
Extension: server_name (len=43)
Type: server_name (0)
Length: 43
Server Name Indication extension
Server Name list length: 41
Server Name Type: host_name (0)
Server Name length: 38
Server Name: [REMOVED]
Extension: supported_groups (len=8)
Type: supported_groups (10)
Length: 8
Supported Groups List Length: 6
Supported Groups (3 groups)
Extension: ec_point_formats (len=2)
Type: ec_point_formats (11)
Length: 2
EC point formats Length: 1
Elliptic curves point formats (1)
Extension: signature_algorithms (len=20)
Type: signature_algorithms (13)
Length: 20
Signature Hash Algorithms Length: 18
Signature Hash Algorithms (9 algorithms)
Extension: SessionTicket TLS (len=0)
Type: SessionTicket TLS (35)
Length: 0
Data (0 bytes)
Extension: extended_master_secret (len=0)
Type: extended_master_secret (23)
Length: 0
Extension: renegotiation_info (len=1)
Type: renegotiation_info (65281)
Length: 1
Renegotiation Info extension
Renegotiation info extension length: 0
服务器名称：[已删除] 包含正确的服务器名称。
服务器Hello
Secure Sockets Layer
TLSv1.2 Record Layer: Handshake Protocol: Server Hello
Content Type: Handshake (22)
Version: TLS 1.2 (0x0303)
Length: 65
Handshake Protocol: Server Hello
Handshake Type: Server Hello (2)
Length: 61
Version: TLS 1.2 (0x0303)
Random: 5a292ab7238205b2b8a2e6692abfd518a054515e53cd5b16...
Session ID Length: 0
Cipher Suite: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (0xc02f)
Compression Method: null (0)
Extensions Length: 21
Extension: server_name (len=0)
Type: server_name (0)
Length: 0
Extension: renegotiation_info (len=1)
Type: renegotiation_info (65281)
Length: 1
Renegotiation Info extension
Renegotiation info extension length: 0
Extension: ec_point_formats (len=4)
Type: ec_point_formats (11)
Length: 4
EC point formats Length: 3
Elliptic curves point formats (3)
Extension: SessionTicket TLS (len=0)
Type: SessionTicket TLS (35)
Length: 0
Data (0 bytes)
证书
Secure Sockets Layer
TLSv1.2 Record Layer: Handshake Protocol: Certificate
Content Type: Handshake (22)
Version: TLS 1.2 (0x0303)
Length: 3855
Handshake Protocol: Certificate
Handshake Type: Certificate (11)
Length: 3851
Certificates Length: 3848
Certificates (3848 bytes)
服务器已完成握手
Secure Sockets Layer
TLSv1.2 Record Layer: Handshake Protocol: Server Key Exchange
Content Type: Handshake (22)
Version: TLS 1.2 (0x0303)
Length: 589
Handshake Protocol: Server Key Exchange
Handshake Type: Server Key Exchange (12)
Length: 585
EC Diffie-Hellman Server Params
Curve Type: named_curve (0x03)
Named Curve: secp256r1 (0x0017)
Pubkey Length: 65
Pubkey: ...
Signature Hash Algorithm: 0x0401
Signature Length: 512
Signature: ...
多个握手消息
Secure Sockets Layer
TLSv1.2 Record Layer: Handshake Protocol: Multiple Handshake Messages
Content Type: Handshake (22)
Version: TLS 1.2 (0x0303)
Length: 77
Handshake Protocol: Certificate
Handshake Type: Certificate (11)
Length: 3
Certificates Length: 0
Handshake Protocol: Client Key Exchange
Handshake Type: Client Key Exchange (16)
Length: 66
EC Diffie-Hellman Client Params
Pubkey Length: 65
Pubkey: ...
TLSv1.2 Record Layer: Change Cipher Spec Protocol: Change Cipher Spec
Content Type: Change Cipher Spec (20)
Version: TLS 1.2 (0x0303)
Length: 1
Change Cipher Spec Message
TLSv1.2 Record Layer: Handshake Protocol: Encrypted Handshake Message
Content Type: Handshake (22)
Version: TLS 1.2 (0x0303)
Length: 40
Handshake Protocol: Encrypted Handshake Message
握手失败
Secure Sockets Layer
TLSv1.2 Record Layer: Alert (Level: Fatal, Description: Handshake Failure)
Content Type: Alert (21)
Version: TLS 1.2 (0x0303)
Length: 2
Alert Message
Level: Fatal (2)
Description: Handshake Failure (40)
更新
感谢@user3484348提供的信息，我现在有更多的信息了。
TLS 1.2（不能工作）：
System.Net Information: 0 : [11752] InitializeSecurityContext(
credential = System.Net.SafeFreeCredential_SECURITY,
context = 1054ea8:6091710,
targetName = api.company.com,
inFlags = ReplayDetect, SequenceDetect, Confidentiality, AllocateMemory, InitManualCredValidation)
System.Net Information: 0 : [11752] InitializeSecurityContext(
In-Buffers count=2,
Out-Buffer length=0,
returned code=IllegalMessage)
TLS 1.0（正在使用）：
System.Net Information: 0 : [11752] InitializeSecurityContext(
credential = System.Net.SafeFreeCredential_SECURITY,
context = 12a5eb0:641d900,
targetName = api.company.com,
inFlags = ReplayDetect, SequenceDetect, Confidentiality, AllocateMemory, InitManualCredValidation)
System.Net Information: 0 : [11752] InitializeSecurityContext(
In-Buffers count=2,
Out-Buffer length=0,
returned code=ContinueNeeded)
TLS 1.2 中的returned code是IllegalMessage，而在 TLS 1.0 中则为 ContinueNeeded。
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256... 你是否检查过客户端支持的列表中是否包含此项？ - Dan Ling