Netconf Configuration problem

[JohnJudi]

Hi friends,

I have a C9500-40X switch.

I configured my switch for Netconf with below commands:

netconf-yang

when I try to telnet switch on port 830, it works! 

I wanna configure interface via an python script using netconf. but when I run the script it shows the following syslog message in switch:

66495: 066422: Mar 27 08:20:37.484: Switch 1 R0/0: ncsshd_bp: NETCONF/SSH: fatal: mm_answer_sign: Xkey_sign failed: error in libcrypto

The software of my switch is ios-xe 17.3.3

Do you have any idea about this problem?

thank you in advance for reply

[Flavio Miranda]

It seems to me that the problem is related to authentication. The user you are using to access have enough privilege?

Xkey_sign failed - something with key exchange.

You have another thread with the same problem but reffering to DNAC, right?  Aree you using DNAC or Scritp, or both?