cipher method of SSLSocket class

Overview:

Between the two ends points of a communication which is connection oriented the TLS protocol provides privacy, message integrity and authentication services.
The instance method cipher() of the SSLSocket class returns the following information as a tuple
- The cipher (i.e, The cryptographic methodology) used for the communication
- The version of the TLS (also still called as SSL) protocol
- Number of secret bits used

# Example Python program that gets the cipher information

# used in a secure communication through SSLScoket

import socket

import ssl

import platform

# SSL context related

contextObject = ssl.SSLContext();

contextObject.verify_mode = ssl.CERT_REQUIRED;

# Check for OS X platform

if platform.system().lower() == 'darwin':

import certifi

import os

# Load the CA certificates used for validating the peer's certificate

contextObject.load_verify_locations(

cafile=os.path.relpath(certifi.where()),

capath=None,

cadata=None);

# Make a secure socket to connect to the server

socketObject = socket.socket();

secureSocket = contextObject.wrap_socket(socketObject);

# Connect to the server

secureSocket.connect(("example.com", 443));

cipher = secureSocket.cipher();

print("Name of the cipher:%s"%cipher[0]);

print("TLS/SSL version:%s"%cipher[1]);

print("Number of secret bits:%s"%cipher[2]);

Name of the cipher:TLS_AES_256_GCM_SHA384

TLS/SSL version:TLSv1.3

Number of secret bits:256