SSL Socket Communication between WiPy 2.0



  • Hi to everyone,
    I have two WiPy 2.0 with the latest firmware release:

    import os
    os.uname()
    (sysname='WiPy', nodename='WiPy', release='1.6.12.b1', version='v1.8.6-593-g8e4ed0fa on 2017-04-12', machine='WiPy with ESP32')
    

    I want create a secure connection between WiPy using SSL Socket. I genereted a self-signed certificate with openssl:

    openssl req -x509 -newkey rsa:2048 -keyout key.pem -out cert.pem -days 365

    The code for the client.py is:

    import usocket as socket
    import ssl
    from network import WLAN
    import machine
    
    wlan = WLAN(mode=WLAN.STA)
    
    wlan.connect('***********', auth=(WLAN.WPA2,"*************"))
    while not wlan.isconnected():
        machine.idle()
    
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM, socket.IPPROTO_TCP)
    s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
    
    ssl_sock = ssl.wrap_socket(s,cert_reqs=ssl.CERT_REQUIRED,ca_certs='/flash/cert/cert.pem')
    
    ssl_sock.connect(('192.168.1.125', 10023))
    
    ssl_sock.write(b"boo!")
    
    data = ssl_sock.read()
    print(data)
    
    ssl_sock.close()
    

    The code for server.py is:

    import usocket as socket
    import ssl
    from network import WLAN
    import machine
    
    wlan = WLAN(mode=WLAN.STA)
    
    wlan.connect('***************', auth=(WLAN.WPA2,"************"))
    while not wlan.isconnected():
        machine.idle()
    
    bindsocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM, socket.IPPROTO_TCP)
    bindsocket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
    bindsocket.bind(('', 10023))
    bindsocket.listen(5)
    
    def do_something(connstream, data):
        print ("do_something:", data)
        connstream.write(b"FOO!")
        return False
    
    def deal_with_client(connstream):
        data = connstream.read()
        while data:
            if not do_something(connstream, data):
                break
            data = connstream.read()
    
    while True:
        print("WAITING CONNECTION")
        newsocket, fromaddr = bindsocket.accept()
        connstream = ssl.wrap_socket(newsocket, keyfile='/flash/cert/key.pem', certfile='/flash/cert/cert.pem', server_side = True)
        try:
            deal_with_client(connstream)
        finally:
            connstream.shutdown(socket.SHUT_RDWR)
            connstream.close()
    

    But I receive this error:

    Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
      File "sserver1.py", line 35, in <module>
    OSError: -15360
    

    line 35 is:

    connstream = ssl.wrap_socket(newsocket, keyfile='/flash/cert/key.pem', certfile='/flash/cert/cert.pem', server_side = True)
    

    If the socket attributes are not specified, a critical error occurs and a CORE DUMP message is printed.

    No one knows where is the problem? It is a firmware problem (or hardware) or I made something wrong?

    Thank you.



  • if the error code changes it certainly is another error. No clue what -1 means, sorry.



  • @this.wiederkehr I am sorry. I don't think that my private key needs a password. I use the first 4 steps of this guide to create my certificates:

    https://www.akadia.com/services/ssh_test_certificate.html

    and Step 3 is Remove passphrase key from Key.



  • @this.wiederkehr Yes my private key needs a password, but I have as result:

    OSError: -1



  • @Innocenzo said in SSL Socket Communication between WiPy 2.0:

    OSError: -15360

    Does your private key need a password?

    -15360 translates to 0x3c00 which is the error code for "MBEDTLS_ERR_PK_PASSWORD_REQUIRED"

    https://tls.mbed.org/api/pk_8h.html#a9c1de7ccb4e18a3ea74b35c4e2cb7527



  • No one have some info about this problem? I tired also with server.key and server.crt certificate instead of .pem but I had the same result. My WiPy firmware is 1.7.5.b2.



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