我想知道ECDHE-ECDSA-AES128-GCM-SHA256和ECDHE-ECDSA-AES128-GCM-SHA256是否有最低密钥生成要求？我正在尝试使用上述算法之一获取TLS客户端和服务器，以连接到彼此并不断接收“无共享密码错误”。我创建了一个CA用于签署客户机和服务器证书，并尝试使用openssl和Node.js进行连接。我正在localhost(127.0.0.1)上运行客户端和服务器，以消除任何其他可能的问题。

以下是我到目前为止所做的工作：

CA密钥对创建：

  $ openssl genrsa -out ca-key.pem 4096
  $ openssl req -new -x509 -days 365 -key ca-key.pem -out ca-cert.pem

服务器/客户端密钥对创建：

  $ openssl genrsa -out server-key.pem 4096
  $ openssl req -new -key server-key.pem -out server-csr.pem
  $ openssl x509 -req -days 365 -in server-csr.pem -CA ca-cert.pem -CAkey ca-key.pem -set_serial 01 -out server-cert.pem 

  $ openssl genrsa -out client-key.pem 4096
  $ openssl req -new -key client-key.pem -out client-csr.pem
  $ openssl x509 -req -days 365 -in client-csr.pem -CA ca-cert.pem -CAkey ca-key.pem -set_serial 02 -out client-cert.pem

我最初试图从命令行连接到node.js服务器(tls.createServer()，选项为：ciphers：'ecdhe-ecdsa-aes256-gcm-sha384:ecdhe-ecdsa-aes128-gcm-sha256')，但为了消除对节点的怀疑，我转而使用openssl创建客户端和服务器。

以下命令正确连接客户端和服务器，并说明它使用的密码为“new,TLSV1/SSLv3,cipher is ECDHE-RSA-AES256-GCM-SHA384”：

$ openssl s_server -accept 8888 -cert server-cert.pem -key server-key.pem -pass stdin -CAfile ca-cert.pem  -state
<password entered here>

$ openssl s_client -connect 127.0.0.1:8888 -cert client-cert.pem -key client-key.pem -pass stdin -CAfile ca-cert.pem -state
<password entered here>

共享密码信息如下：

Shared ciphers:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-R
SA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES2
56-SHA:SRP-DSS-AES-256-CBC-SHA:SRP-RSA-AES-256-CBC-SHA:DHE-DSS-AES256-GCM-SHA384
:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA256:DHE-RSA-A
ES256-SHA:DHE-DSS-AES256-SHA:DHE-RSA-CAMELLIA256-SHA:DHE-DSS-CAMELLIA256-SHA:ECD
H-RSA-AES256-GCM-SHA384:ECDH-ECDSA-AES256-GCM-SHA384:ECDH-RSA-AES256-SHA384:ECDH
-ECDSA-AES256-SHA384:ECDH-RSA-AES256-SHA:ECDH-ECDSA-AES256-SHA:AES256-GCM-SHA384
:AES256-SHA256:AES256-SHA:CAMELLIA256-SHA:ECDHE-RSA-DES-CBC3-SHA:ECDHE-ECDSA-DES
-CBC3-SHA:SRP-DSS-3DES-EDE-CBC-SHA:SRP-RSA-3DES-EDE-CBC-SHA:EDH-RSA-DES-CBC3-SHA
:EDH-DSS-DES-CBC3-SHA:ECDH-RSA-DES-CBC3-SHA:ECDH-ECDSA-DES-CBC3-SHA:DES-CBC3-SHA
:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-SHA2
56:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:SRP-DSS
-AES-128-CBC-SHA:SRP-RSA-AES-128-CBC-SHA:DHE-DSS-AES128-GCM-SHA256

当我在服务器或客户端和服务器上指定密码时，以下命令不起作用。注意，ECDHE-ECDSA-AES128-GCM-SHA256密码在上面的列表中被列为共享。

$ openssl s_server -accept 8888 -cert server-cert.pem -key server-key.pem -pass stdin -CAfile ca-cert.pem -cipher ECDHE-ECDSA-AES128-GCM-SHA256
<password entered here>

<< Server output after client connection attempt >>
Using default temp DH parameters
Using default temp ECDH parameters
ACCEPT
ERROR
2674688:error:1408A0C1:SSL routines:SSL3_GET_CLIENT_HELLO:no shared cipher:s3_srvr.c:1353:
shutting down SSL
CONNECTION CLOSED
ACCEPT


$ openssl s_client -connect 127.0.0.1:8888 -cert client-cert.pem -key client-key.pem -pass stdin -CAfile ca-cert.pem -cipher ECDHE-ECDSA-AES128-GCM-SHA256
<password entered here>

<<client output after connection attempt>>
CONNECTED(00000003)
2674688:error:14077410:SSL routines:SSL23_GET_SERVER_HELLO:sslv3 alert handshake failure:s23_clnt.c:708:
---
no peer certificate available
---
No client certificate CA names sent
---
SSL handshake has read 7 bytes and written 166 bytes
---
New, (NONE), Cipher is (NONE)
Secure Renegotiation IS NOT supported
Compression: NONE
Expansion: NONE
---

有人有什么想法吗？提前道谢！