我的交换机上有一个 802.1X 身份验证的工作配置。radius 服务器是一个配置了 EAP-TLS 的 freeradius 实例。在 Linux（和 Android 设备）上一切正常，但当我尝试连接 Windows 10 PC 时，我从 freeradius 服务器收到一个奇怪的错误：
<...>
Debug: eap_tls: Continuing EAP-TLS
Debug: eap_tls: Peer sent flags --L
Debug: eap_tls: Peer indicated complete TLS record size will be 174 bytes
Debug: eap_tls: Got complete TLS record (174 bytes)
Debug: eap_tls: [eaptls verify] = length included
Debug: eap_tls: (other): before/accept initialization
Debug: eap_tls: TLS_accept: before/accept initialization
Debug: Ignoring cbtls_msg call with pseudo content type 256, version 0
Debug: eap_tls: <<< recv TLS 1.2 [length 00a9]
Debug: Ignoring cbtls_msg call with pseudo content type 256, version 0
Debug: eap_tls: >>> send TLS 1.2 [length 0002]
ERROR: eap_tls: TLS Alert write:fatal:handshake failure
Error: tls: TLS_accept: Error in error
Error: tls: TLS_accept: Error in error
ERROR: eap_tls: Failed in __FUNCTION__ (SSL_read): s3_srvr.c[1418]:error:1408A0C1:SSL routines:ssl3_get_client_hello:no shared cipher
ERROR: eap_tls: System call (I/O) error (-1)
ERROR: eap_tls: TLS receive handshake failed during operation
ERROR: eap_tls: [eaptls process] = fail
<...>
那么，看起来是这样的no shared cipher。现在，到了奇怪的部分。
使用 TLSv1.2，当服务器回复客户端问候消息时，它会选择一个密码套件和其他可变配置参数。当 Linux 系统连接时，这些参数包括：TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384、null压缩、ECDHE曲线secp384r1、签名算法SHA512+ECDSA。
有趣的是，此配置由 Windows 系统提供/支持（在client-hello），但 radius 服务器在 中失败no shared cipher。这些 hello 之间的唯一区别是 tls 扩展：ocsp stampling、会话票证、扩展主密钥和重新协商（全部来自 Windows 系统，见下文）。
这些扩展中的一些是否可能导致 freeradius（和 openssl）回复no shared cipher？
这是client-hello来自 Windows 系统的数据包。收到此数据包后，NAS 立即回复失败。
SSL Record Layer: Handshake Protocol: Client Hello
Content Type: Handshake (22)
Version: TLS 1.2 (0x0303)
Length: 169
Handshake Protocol: Client Hello
Handshake Type: Client Hello (1)
Length: 165
Version: TLS 1.2 (0x0303)
Random
GMT Unix Time: Oct 12, 2016 22:32:27.000000000 MSK
Random Bytes: cfee7182be38061f0202a3b3ec374724eec7a7eea20270ad...
Session ID Length: 0
Cipher Suites Length: 60
Cipher Suites (30 suites)
Cipher Suite: TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 (0xc02c)
Cipher Suite: TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 (0xc02b)
Cipher Suite: TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (0xc030)
Cipher Suite: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (0xc02f)
Cipher Suite: TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 (0x009f)
Cipher Suite: TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 (0x009e)
Cipher Suite: TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384 (0xc024)
Cipher Suite: TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 (0xc023)
Cipher Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 (0xc028)
Cipher Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 (0xc027)
Cipher Suite: TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA (0xc00a)
Cipher Suite: TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA (0xc009)
Cipher Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA (0xc014)
Cipher Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA (0xc013)
Cipher Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA (0x0039)
Cipher Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA (0x0033)
Cipher Suite: TLS_RSA_WITH_AES_256_GCM_SHA384 (0x009d)
Cipher Suite: TLS_RSA_WITH_AES_128_GCM_SHA256 (0x009c)
Cipher Suite: TLS_RSA_WITH_AES_256_CBC_SHA256 (0x003d)
Cipher Suite: TLS_RSA_WITH_AES_128_CBC_SHA256 (0x003c)
Cipher Suite: TLS_RSA_WITH_AES_256_CBC_SHA (0x0035)
Cipher Suite: TLS_RSA_WITH_AES_128_CBC_SHA (0x002f)
Cipher Suite: TLS_RSA_WITH_3DES_EDE_CBC_SHA (0x000a)
Cipher Suite: TLS_DHE_DSS_WITH_AES_256_CBC_SHA256 (0x006a)
Cipher Suite: TLS_DHE_DSS_WITH_AES_128_CBC_SHA256 (0x0040)
Cipher Suite: TLS_DHE_DSS_WITH_AES_256_CBC_SHA (0x0038)
Cipher Suite: TLS_DHE_DSS_WITH_AES_128_CBC_SHA (0x0032)
Cipher Suite: TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA (0x0013)
Cipher Suite: TLS_RSA_WITH_RC4_128_SHA (0x0005)
Cipher Suite: TLS_RSA_WITH_RC4_128_MD5 (0x0004)
Compression Methods Length: 1
Compression Methods (1 method)
Compression Method: null (0)
Extensions Length: 64
Extension: status_request
Type: status_request (0x0005)
Length: 5
Certificate Status Type: OCSP (1)
Responder ID list Length: 0
Request Extensions Length: 0
Extension: elliptic_curves
Type: elliptic_curves (0x000a)
Length: 8
Elliptic Curves Length: 6
Elliptic curves (3 curves)
Elliptic curve: Unknown (0x001d)
Elliptic curve: secp256r1 (0x0017)
Elliptic curve: secp384r1 (0x0018)
Extension: ec_point_formats
Type: ec_point_formats (0x000b)
Length: 2
EC point formats Length: 1
Elliptic curves point formats (1)
EC point format: uncompressed (0)
Extension: signature_algorithms
Type: signature_algorithms (0x000d)
Length: 20
Signature Hash Algorithms Length: 18
Signature Hash Algorithms (9 algorithms)
Signature Hash Algorithm: 0x0401
Signature Hash Algorithm Hash: SHA256 (4)
Signature Hash Algorithm Signature: RSA (1)
Signature Hash Algorithm: 0x0501
Signature Hash Algorithm Hash: SHA384 (5)
Signature Hash Algorithm Signature: RSA (1)
Signature Hash Algorithm: 0x0201
Signature Hash Algorithm Hash: SHA1 (2)
Signature Hash Algorithm Signature: RSA (1)
Signature Hash Algorithm: 0x0403
Signature Hash Algorithm Hash: SHA256 (4)
Signature Hash Algorithm Signature: ECDSA (3)
Signature Hash Algorithm: 0x0503
Signature Hash Algorithm Hash: SHA384 (5)
Signature Hash Algorithm Signature: ECDSA (3)
Signature Hash Algorithm: 0x0203
Signature Hash Algorithm Hash: SHA1 (2)
Signature Hash Algorithm Signature: ECDSA (3)
Signature Hash Algorithm: 0x0202
Signature Hash Algorithm Hash: SHA1 (2)
Signature Hash Algorithm Signature: DSA (2)
Signature Hash Algorithm: 0x0601
Signature Hash Algorithm Hash: SHA512 (6)
Signature Hash Algorithm Signature: RSA (1)
Signature Hash Algorithm: 0x0603
Signature Hash Algorithm Hash: SHA512 (6)
Signature Hash Algorithm Signature: ECDSA (3)
Extension: SessionTicket TLS
Type: SessionTicket TLS (0x0023)
Length: 0
Data (0 bytes)
Extension: Extended Master Secret
Type: Extended Master Secret (0x0017)
Length: 0
Extension: renegotiation_info
Type: renegotiation_info (0xff01)
Length: 1
Renegotiation Info extension
Renegotiation info extension length: 0
以下是client-hello来自 Linux 系统的情况（运行正常）：
SSL Record Layer: Handshake Protocol: Client Hello
Content Type: Handshake (22)
Version: TLS 1.0 (0x0301)
Length: 293
Handshake Protocol: Client Hello
Handshake Type: Client Hello (1)
Length: 289
Version: TLS 1.2 (0x0303)
Random
GMT Unix Time: May 18, 2087 18:43:39.000000000 MSK
Random Bytes: a8052b4f8ba5439503d03da61ea2eaad449c9c3a3e9f2ac6...
Session ID Length: 0
Cipher Suites Length: 172
Cipher Suites (86 suites)
Cipher Suite: TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (0xc030)
Cipher Suite: TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 (0xc02c)
Cipher Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 (0xc028)
Cipher Suite: TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384 (0xc024)
Cipher Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA (0xc014)
Cipher Suite: TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA (0xc00a)
Cipher Suite: TLS_DH_DSS_WITH_AES_256_GCM_SHA384 (0x00a5)
Cipher Suite: TLS_DHE_DSS_WITH_AES_256_GCM_SHA384 (0x00a3)
Cipher Suite: TLS_DH_RSA_WITH_AES_256_GCM_SHA384 (0x00a1)
Cipher Suite: TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 (0x009f)
Cipher Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA256 (0x006b)
Cipher Suite: TLS_DHE_DSS_WITH_AES_256_CBC_SHA256 (0x006a)
Cipher Suite: TLS_DH_RSA_WITH_AES_256_CBC_SHA256 (0x0069)
Cipher Suite: TLS_DH_DSS_WITH_AES_256_CBC_SHA256 (0x0068)
Cipher Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA (0x0039)
Cipher Suite: TLS_DHE_DSS_WITH_AES_256_CBC_SHA (0x0038)
Cipher Suite: TLS_DH_RSA_WITH_AES_256_CBC_SHA (0x0037)
Cipher Suite: TLS_DH_DSS_WITH_AES_256_CBC_SHA (0x0036)
Cipher Suite: TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA (0x0088)
Cipher Suite: TLS_DHE_DSS_WITH_CAMELLIA_256_CBC_SHA (0x0087)
Cipher Suite: TLS_DH_RSA_WITH_CAMELLIA_256_CBC_SHA (0x0086)
Cipher Suite: TLS_DH_DSS_WITH_CAMELLIA_256_CBC_SHA (0x0085)
Cipher Suite: TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384 (0xc032)
Cipher Suite: TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384 (0xc02e)
Cipher Suite: TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384 (0xc02a)
Cipher Suite: TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384 (0xc026)
Cipher Suite: TLS_ECDH_RSA_WITH_AES_256_CBC_SHA (0xc00f)
Cipher Suite: TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA (0xc005)
Cipher Suite: TLS_RSA_WITH_AES_256_GCM_SHA384 (0x009d)
Cipher Suite: TLS_RSA_WITH_AES_256_CBC_SHA256 (0x003d)
Cipher Suite: TLS_RSA_WITH_AES_256_CBC_SHA (0x0035)
Cipher Suite: TLS_RSA_WITH_CAMELLIA_256_CBC_SHA (0x0084)
Cipher Suite: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (0xc02f)
Cipher Suite: TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 (0xc02b)
Cipher Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 (0xc027)
Cipher Suite: TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 (0xc023)
Cipher Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA (0xc013)
Cipher Suite: TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA (0xc009)
Cipher Suite: TLS_DH_DSS_WITH_AES_128_GCM_SHA256 (0x00a4)
Cipher Suite: TLS_DHE_DSS_WITH_AES_128_GCM_SHA256 (0x00a2)
Cipher Suite: TLS_DH_RSA_WITH_AES_128_GCM_SHA256 (0x00a0)
Cipher Suite: TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 (0x009e)
Cipher Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA256 (0x0067)
Cipher Suite: TLS_DHE_DSS_WITH_AES_128_CBC_SHA256 (0x0040)
Cipher Suite: TLS_DH_RSA_WITH_AES_128_CBC_SHA256 (0x003f)
Cipher Suite: TLS_DH_DSS_WITH_AES_128_CBC_SHA256 (0x003e)
Cipher Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA (0x0033)
Cipher Suite: TLS_DHE_DSS_WITH_AES_128_CBC_SHA (0x0032)
Cipher Suite: TLS_DH_RSA_WITH_AES_128_CBC_SHA (0x0031)
Cipher Suite: TLS_DH_DSS_WITH_AES_128_CBC_SHA (0x0030)
Cipher Suite: TLS_DHE_RSA_WITH_SEED_CBC_SHA (0x009a)
Cipher Suite: TLS_DHE_DSS_WITH_SEED_CBC_SHA (0x0099)
Cipher Suite: TLS_DH_RSA_WITH_SEED_CBC_SHA (0x0098)
Cipher Suite: TLS_DH_DSS_WITH_SEED_CBC_SHA (0x0097)
Cipher Suite: TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA (0x0045)
Cipher Suite: TLS_DHE_DSS_WITH_CAMELLIA_128_CBC_SHA (0x0044)
Cipher Suite: TLS_DH_RSA_WITH_CAMELLIA_128_CBC_SHA (0x0043)
Cipher Suite: TLS_DH_DSS_WITH_CAMELLIA_128_CBC_SHA (0x0042)
Cipher Suite: TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256 (0xc031)
Cipher Suite: TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256 (0xc02d)
Cipher Suite: TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256 (0xc029)
Cipher Suite: TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256 (0xc025)
Cipher Suite: TLS_ECDH_RSA_WITH_AES_128_CBC_SHA (0xc00e)
Cipher Suite: TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA (0xc004)
Cipher Suite: TLS_RSA_WITH_AES_128_GCM_SHA256 (0x009c)
Cipher Suite: TLS_RSA_WITH_AES_128_CBC_SHA256 (0x003c)
Cipher Suite: TLS_RSA_WITH_AES_128_CBC_SHA (0x002f)
Cipher Suite: TLS_RSA_WITH_SEED_CBC_SHA (0x0096)
Cipher Suite: TLS_RSA_WITH_CAMELLIA_128_CBC_SHA (0x0041)
Cipher Suite: TLS_RSA_WITH_IDEA_CBC_SHA (0x0007)
Cipher Suite: TLS_ECDHE_RSA_WITH_RC4_128_SHA (0xc011)
Cipher Suite: TLS_ECDHE_ECDSA_WITH_RC4_128_SHA (0xc007)
Cipher Suite: TLS_ECDH_RSA_WITH_RC4_128_SHA (0xc00c)
Cipher Suite: TLS_ECDH_ECDSA_WITH_RC4_128_SHA (0xc002)
Cipher Suite: TLS_RSA_WITH_RC4_128_SHA (0x0005)
Cipher Suite: TLS_RSA_WITH_RC4_128_MD5 (0x0004)
Cipher Suite: TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA (0xc012)
Cipher Suite: TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA (0xc008)
Cipher Suite: TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA (0x0016)
Cipher Suite: TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA (0x0013)
Cipher Suite: TLS_DH_RSA_WITH_3DES_EDE_CBC_SHA (0x0010)
Cipher Suite: TLS_DH_DSS_WITH_3DES_EDE_CBC_SHA (0x000d)
Cipher Suite: TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA (0xc00d)
Cipher Suite: TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA (0xc003)
Cipher Suite: TLS_RSA_WITH_3DES_EDE_CBC_SHA (0x000a)
Cipher Suite: TLS_EMPTY_RENEGOTIATION_INFO_SCSV (0x00ff)
Compression Methods Length: 1
Compression Methods (1 method)
Compression Method: null (0)
Extensions Length: 76
Extension: ec_point_formats
Type: ec_point_formats (0x000b)
Length: 4
EC point formats Length: 3
Elliptic curves point formats (3)
EC point format: uncompressed (0)
EC point format: ansiX962_compressed_prime (1)
EC point format: ansiX962_compressed_char2 (2)
Extension: elliptic_curves
Type: elliptic_curves (0x000a)
Length: 28
Elliptic Curves Length: 26
Elliptic curves (13 curves)
Elliptic curve: secp256r1 (0x0017)
Elliptic curve: secp521r1 (0x0019)
Elliptic curve: brainpoolP512r1 (0x001c)
Elliptic curve: brainpoolP384r1 (0x001b)
Elliptic curve: secp384r1 (0x0018)
Elliptic curve: brainpoolP256r1 (0x001a)
Elliptic curve: secp256k1 (0x0016)
Elliptic curve: sect571r1 (0x000e)
Elliptic curve: sect571k1 (0x000d)
Elliptic curve: sect409k1 (0x000b)
Elliptic curve: sect409r1 (0x000c)
Elliptic curve: sect283k1 (0x0009)
Elliptic curve: sect283r1 (0x000a)
Extension: signature_algorithms
Type: signature_algorithms (0x000d)
Length: 32
Signature Hash Algorithms Length: 30
Signature Hash Algorithms (15 algorithms)
Signature Hash Algorithm: 0x0601
Signature Hash Algorithm Hash: SHA512 (6)
Signature Hash Algorithm Signature: RSA (1)
Signature Hash Algorithm: 0x0602
Signature Hash Algorithm Hash: SHA512 (6)
Signature Hash Algorithm Signature: DSA (2)
Signature Hash Algorithm: 0x0603
Signature Hash Algorithm Hash: SHA512 (6)
Signature Hash Algorithm Signature: ECDSA (3)
Signature Hash Algorithm: 0x0501
Signature Hash Algorithm Hash: SHA384 (5)
Signature Hash Algorithm Signature: RSA (1)
Signature Hash Algorithm: 0x0502
Signature Hash Algorithm Hash: SHA384 (5)
Signature Hash Algorithm Signature: DSA (2)
Signature Hash Algorithm: 0x0503
Signature Hash Algorithm Hash: SHA384 (5)
Signature Hash Algorithm Signature: ECDSA (3)
Signature Hash Algorithm: 0x0401
Signature Hash Algorithm Hash: SHA256 (4)
Signature Hash Algorithm Signature: RSA (1)
Signature Hash Algorithm: 0x0402
Signature Hash Algorithm Hash: SHA256 (4)
Signature Hash Algorithm Signature: DSA (2)
Signature Hash Algorithm: 0x0403
Signature Hash Algorithm Hash: SHA256 (4)
Signature Hash Algorithm Signature: ECDSA (3)
Signature Hash Algorithm: 0x0301
Signature Hash Algorithm Hash: SHA224 (3)
Signature Hash Algorithm Signature: RSA (1)
Signature Hash Algorithm: 0x0302
Signature Hash Algorithm Hash: SHA224 (3)
Signature Hash Algorithm Signature: DSA (2)
Signature Hash Algorithm: 0x0303
Signature Hash Algorithm Hash: SHA224 (3)
Signature Hash Algorithm Signature: ECDSA (3)
Signature Hash Algorithm: 0x0201
Signature Hash Algorithm Hash: SHA1 (2)
Signature Hash Algorithm Signature: RSA (1)
Signature Hash Algorithm: 0x0202
Signature Hash Algorithm Hash: SHA1 (2)
Signature Hash Algorithm Signature: DSA (2)
Signature Hash Algorithm: 0x0203
Signature Hash Algorithm Hash: SHA1 (2)
Signature Hash Algorithm Signature: ECDSA (3)
对于server-helloLinux系统（使用协商的参数）：
Version: 802.1X-2001 (1)
Type: EAP Packet (0)
Length: 558
Extensible Authentication Protocol
Code: Request (1)
Id: 183
Length: 558
Type: TLS EAP (EAP-TLS) (13)
EAP-TLS Flags: 0x80
1... .... = Length Included: True
.0.. .... = More Fragments: False
..0. .... = Start: False
EAP-TLS Length: 1562
[2 EAP-TLS Fragments (1562 bytes): #6(1014), #8(548)]
[Frame: 6, payload: 0-1013 (1014 bytes)]
[Frame: 8, payload: 1014-1561 (548 bytes)]
[Fragment Count: 2]
[Reassembled EAP-TLS Length: 1562]
Secure Sockets Layer
TLSv1.2 Record Layer: Handshake Protocol: Server Hello
Content Type: Handshake (22)
Version: TLS 1.2 (0x0303)
Length: 57
Handshake Protocol: Server Hello
Handshake Type: Server Hello (2)
Length: 53
Version: TLS 1.2 (0x0303)
Random
GMT Unix Time: Jun 23, 2069 22:43:44.000000000 MSK
Random Bytes: f55c140ff16bab468b8f5d2f21e3cc8237090f9eebf23476...
Session ID Length: 0
Cipher Suite: TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 (0xc02c)
Compression Method: null (0)
Extensions Length: 13
Extension: renegotiation_info
Type: renegotiation_info (0xff01)
Length: 1
Renegotiation Info extension
Renegotiation info extension length: 0
Extension: ec_point_formats
Type: ec_point_formats (0x000b)
Length: 4
EC point formats Length: 3
Elliptic curves point formats (3)
EC point format: uncompressed (0)
EC point format: ansiX962_compressed_prime (1)
EC point format: ansiX962_compressed_char2 (2)
TLSv1.2 Record Layer: Handshake Protocol: Certificate
Content Type: Handshake (22)
Version: TLS 1.2 (0x0303)
Length: 1155
Handshake Protocol: Certificate
Handshake Type: Certificate (11)
Length: 1151
Certificates Length: 1148
Certificates (1148 bytes)
REDACTED
TLSv1.2 Record Layer: Handshake Protocol: Server Key Exchange
Content Type: Handshake (22)
Version: TLS 1.2 (0x0303)
Length: 247
Handshake Protocol: Server Key Exchange
Handshake Type: Server Key Exchange (12)
Length: 243
EC Diffie-Hellman Server Params
Curve Type: named_curve (0x03)
Named Curve: secp384r1 (0x0018)
Pubkey Length: 97
Pubkey: 0409c1e40a860e38d72cc95fe4bed9bc01b2874f79fa74d3...
Signature Hash Algorithm: 0x0603
Signature Hash Algorithm Hash: SHA512 (6)
Signature Hash Algorithm Signature: ECDSA (3)
Signature Length: 138
Signature: 30818702414f82bf2dc1f20e19ca281784a1023607d4ae4f...
TLSv1.2 Record Layer: Handshake Protocol: Multiple Handshake Messages
Content Type: Handshake (22)
Version: TLS 1.2 (0x0303)
Length: 83
Handshake Protocol: Certificate Request
Handshake Type: Certificate Request (13)
Length: 75
Certificate types count: 3
Certificate types (3 types)
Certificate type: RSA Sign (1)
Certificate type: DSS Sign (2)
Certificate type: ECDSA Sign (64)
Signature Hash Algorithms Length: 30
Signature Hash Algorithms (15 algorithms)
Signature Hash Algorithm: 0x0601
Signature Hash Algorithm Hash: SHA512 (6)
Signature Hash Algorithm Signature: RSA (1)
Signature Hash Algorithm: 0x0602
Signature Hash Algorithm Hash: SHA512 (6)
Signature Hash Algorithm Signature: DSA (2)
Signature Hash Algorithm: 0x0603
Signature Hash Algorithm Hash: SHA512 (6)
Signature Hash Algorithm Signature: ECDSA (3)
Signature Hash Algorithm: 0x0501
Signature Hash Algorithm Hash: SHA384 (5)
Signature Hash Algorithm Signature: RSA (1)
Signature Hash Algorithm: 0x0502
Signature Hash Algorithm Hash: SHA384 (5)
Signature Hash Algorithm Signature: DSA (2)
Signature Hash Algorithm: 0x0503
Signature Hash Algorithm Hash: SHA384 (5)
Signature Hash Algorithm Signature: ECDSA (3)
Signature Hash Algorithm: 0x0401
Signature Hash Algorithm Hash: SHA256 (4)
Signature Hash Algorithm Signature: RSA (1)
Signature Hash Algorithm: 0x0402
Signature Hash Algorithm Hash: SHA256 (4)
Signature Hash Algorithm Signature: DSA (2)
Signature Hash Algorithm: 0x0403
Signature Hash Algorithm Hash: SHA256 (4)
Signature Hash Algorithm Signature: ECDSA (3)
Signature Hash Algorithm: 0x0301
Signature Hash Algorithm Hash: SHA224 (3)
Signature Hash Algorithm Signature: RSA (1)
Signature Hash Algorithm: 0x0302
Signature Hash Algorithm Hash: SHA224 (3)
Signature Hash Algorithm Signature: DSA (2)
Signature Hash Algorithm: 0x0303
Signature Hash Algorithm Hash: SHA224 (3)
Signature Hash Algorithm Signature: ECDSA (3)
Signature Hash Algorithm: 0x0201
Signature Hash Algorithm Hash: SHA1 (2)
Signature Hash Algorithm Signature: RSA (1)
Signature Hash Algorithm: 0x0202
Signature Hash Algorithm Hash: SHA1 (2)
Signature Hash Algorithm Signature: DSA (2)
Signature Hash Algorithm: 0x0203
Signature Hash Algorithm Hash: SHA1 (2)
Signature Hash Algorithm Signature: ECDSA (3)
Distinguished Names Length: 37
REDACTED
Handshake Protocol: Server Hello Done
Handshake Type: Server Hello Done (14)
Length: 0
答案1
在客户端问候中提到的 3 个扩展中，扩展主密钥似乎是最有可能的原因。它是 TLS 的“新”扩展，有助于应对 MITM 攻击尝试。
您可以尝试禁用 Windows 中的扩展主密钥扩展，方法是向以下键添加 DWORD 值：[HKLM\System\CurrentControlSet\Control\SecurityProviders\Schannel]
如果您的 Windows 机器是客户端，则添加：
REG_DWORD:DisableClientExtendedMasterSecret = 1
如果您的 Windows 机器是服务器，则添加：
REG_DWORD:DisableServerExtendedMasterSecret = 1
无需重新启动机器，从此时起发生的所有 TLE 连接都会被考虑在内。
我必须禁用它才能使用 BMC TrueSight 解密线路上的流量并分析 SSL 连接上的用户体验。BMC TrueSight 的 OpenSSL 版本太旧了，仅从 OpenSSL 1.1.10 开始才受支持。它也受 Android 和 iPhone 的支持。