“无共享密码"； python和OpenSSL错误 [英] "no shared cipher" error with python and OpenSSL

问题描述

服务器:

#!/usr/bin/env python

import SocketServer
import json
from OpenSSL import SSL
import os
import socket

TERMINATION_STRING = "Done"

CERTIFICATE_PATH = os.getcwd() + '/CA/certs/01.pem'
KEY_PATH = os.getcwd() + '/CA/private/key.pem'
CA_PATH = os.getcwd() + '/CA/cacert.pem'
print CA_PATH

def verify_cb(conn, cert, errnum, depth, ok):
    print('Got cert: %s' % cert.get_subject())
    return ok

class SSLThreadingTCPServer(SocketServer.ThreadingTCPServer):
    def __init__(self, address, handler):
        SocketServer.ThreadingTCPServer.__init__(self, address, handler)

        ctx = SSL.Context(SSL.SSLv23_METHOD)
        ctx.set_verify(SSL.VERIFY_PEER | SSL.VERIFY_FAIL_IF_NO_PEER_CERT, verify_cb)

        ctx.use_privatekey_file(KEY_PATH)
        ctx.use_certificate_file(CERTIFICATE_PATH)
        ctx.load_verify_locations(CA_PATH)

        self.socket = SSL.Connection(ctx, socket.socket(self.address_family, self.socket_type))
        self.socket.set_accept_state()

        self.server_bind()
        self.server_activate()

        print "Serving:", address[0], "on port:", address[1]



class MemberUpdateHandler(SocketServer.StreamRequestHandler):
    def setup(self):
        self.connection = self.request
        self.rfile = socket._fileobject(self.request, "rb", self.rbufsize)
        self.wfile = socket._fileobject(self.request, "wb", self.wbufsize)

        print self.client_address, "connected"

    def handle(self):
        data = ""
        while True:
            data += self.request.recv(1024).encode('utf-8').strip
            if data[-4:] == "Done":
                print "Done"
                break

            dataStrings = data.split(' ')
            for item in dataStrings:
                print item

if __name__ == "__main__":
    ADDRESS = 'localhost'
    PORT = 42424
    HOST = (ADDRESS, PORT)

    s = SSLThreadingTCPServer(HOST, MemberUpdateHandler)
    s.serve_forever()

客户:

#!/usr/bin/env python

from OpenSSL import SSL
import socket
import os

HOST = 'localhost'
PORT = 42424
ADDRESS = (HOST, PORT)

CERTIFICATE_FILE = os.getcwd() + '/CA/certs/02.pem'
KEY_PATH = os.getcwd() + '/CA/clientKey.pem'
CA_PATH = os.getcwd() + '/CA/cacert.pem'

def verify_cb(conn, cert, errnum, depth, ok):
    print('Got cert: %s' % cert.get_subject())
    return ok

sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

ctx = SSL.Context(SSL.SSLv23_METHOD)
ctx.set_verify(SSL.VERIFY_PEER, verify_cb)
ctx.use_certificate_file(CERTIFICATE_FILE)
ctx.use_privatekey_file(KEY_PATH)
ctx.load_verify_locations(CA_PATH)

sslSock = SSL.Connection(ctx, sock)
sslSock.connect(ADDRESS)

items = "this is a test Done"

sslSock.sendall(items)

sslSock.close()

服务器端错误:

Error: [('SSL routines', 'SSL3_GET_CLIENT_HELLO', 'no shared cipher')]

客户端错误:

OpenSSL.SSL.Error: [('SSL routines', 'SSL23_GET_SERVER_HELLO', 'sslv3 alert handshake failure')]

我感觉自己缺少一些简单的东西，但是无法将其固定下来.我在各个地方都发现了几个与我完全一样的问题，但没有一个得到回答.我是网络编程的新手，不胜感激.

I have a feeling that I am missing something simple, but have been unable to pin it down. I have found several questions exactly like mine in various places, but none have been answered. I am new to network programming and would greatly appreciate any help.

使用Ubuntu 10.04和python 2.6

Using Ubuntu 10.04 and python 2.6

推荐答案

一个错误是:

data += self.request.recv(1024).encode('utf-8').strip

将我引向

TypeError: cannot concatenate 'str' and 'builtin_function_or_method' objects

应该是:

data += self.request.recv(1024).encode('utf-8').strip()

这个例子对我有用.

Got cert: <X509Name object '/C=IT/ST=XXX/L=YYY/O=ZZZ/OU=NNN/CN=CA'>
Got cert: <X509Name object '/C=IT/ST=XXX/L=YYY/O=ZZZ/OU=NNN/CN=Server'>

使用Stock 10.04 Ubuntu服务器和从apt-get安装的软件包进行了测试.

Tested with Stock 10.04 Ubuntu server and packages installed from apt-get.

python-openssl                    0.10-1
openssl                           0.9.8k-7ubuntu8
python                            2.6.5-0ubuntu1

您应该检查证书/CA，或者使用一些列出了可用密码的简单脚本来测试服务器:

You should check your certificate/CA, or test server with some simple script that list some available ciphers: https://superuser.com/questions/109213/is-there-a-tool-that-can-test-what-ssl-tls-cipher-suites-a-particular-website-of

更新2:

为了排除证书的某些问题，您可以生成一些CA和服务器/客户端证书，例如

In order to exclude some issues with certificates you could generate some CA and server/client certificates like in http://acs.lbl.gov/~boverhof/openssl_certs.html

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