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Chilkat2-Python Examples

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(Chilkat2-Python) Generate CSR from Pre-Existing Private Key

Demonstrates how to generate a Certificate Signing Request (CSR) from a pre-existing RSA private key.

Note: This example requires Chilkat v9.5.0.65 or greater.

Chilkat2 Python Downloads

Python Module for Windows, Linux, Alpine Linux,
MAC OS X, Solaris, FreeBSD, OpenBSD,
Raspberry Pi and other single board computers

import sys
import chilkat2

# Note: Requires Chilkat v9.5.0.65 or greater.

# This requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

privKey = chilkat2.PrivateKey()

# Load the private key from a file.
# (Chilkat provides the ability to load private keys from many different
# formats and sources..)
success = privKey.LoadEncryptedPemFile("qa_data/rsa/privKey1.pem","password")
if (not success):
    print(privKey.LastErrorText)
    sys.exit()

# Create the CSR object and set properties.
csr = chilkat2.Csr()

# Specify the Common Name.  This is the only required property.
# For SSL/TLS certificates, this would be the domain name.
# For email certificates this would be the email address.
csr.CommonName = "mysubdomain.mydomain.com"

# Country Name (2 letter code)
csr.Country = "GB"

# State or Province Name (full name)
csr.State = "Yorks"

# Locality Name (eg, city)
csr.Locality = "York"

# Organization Name (eg, company)
csr.Company = "Internet Widgits Pty Ltd"

# Organizational Unit Name (eg, secion/division)
csr.CompanyDivision = "IT"

# Email address
csr.EmailAddress = "support@mydomain.com"

# Create the CSR using the private key.
pemStr = csr.GenCsrPem(privKey)
if (csr.LastMethodSuccess != True):
    print(csr.LastErrorText)
    sys.exit()

# Save the CSR..
fac = chilkat2.FileAccess()
fac.WriteEntireTextFile("qa_output/csr1.pem",pemStr,"utf-8",False)

# Show the CSR.
print(pemStr)

# Sample output:
# The CSR PEM can be checked here:
# https://www.networking4all.com/en/support/tools/csr+check/
# Copy-and-paste the PEM into the online CSR Decoding / CSR Verification form

# -----BEGIN CERTIFICATE REQUEST-----
# MIIC6jCCAdICAQAwgaQxITAfBgNVBAMMGG15c3ViZG9tYWluLm15ZG9tYWluLmNv
# bTELMAkGA1UEBhMCR0IxDjAMBgNVBAgMBVlvcmtzMQ0wCwYDVQQHDARZb3JrMSEw
# HwYDVQQKDBhJbnRlcm5ldCBXaWRnaXRzIFB0eSBMdGQxCzAJBgNVBAsMAklUMSMw
# IQYJKoZIhvcNAQkBFhRzdXBwb3J0QG15ZG9tYWluLmNvbTCCASIwDQYJKoZIhvcN
# AQEBBQADggEPADCCAQoCggEBALnQ0un/wF8whk+gPuiAlf3qvx14jgAOV6Erm6EB
# H7WACPCpnKcm/8KP+7uoPiwRQaENhMeCgf45vcivl2p6aAn/spLXyEkXyw2d8wFb
# YYAGRkiz4Xf7ASJiKuwcOtORz+sSDzgtdfokHfXU1cYeFE2yQhSdLUY5fMn425+g
# KoEEsRSjSDe6AKru4+4iGNrLKd8pB9IA5/jOE139IkWlB9r5fEPD5bUTsgqXk9eb
# 68O0gc712V2eZK07N24lDmFC4bIMTD4csDWocR5hFHXj7NX7c8sOBDcpEb9mPIk4
# elxubnhkfnjhOi4J3lDHcT/0ALnbLhf9LnaiKqs+5VcVZvECAwEAAaAAMA0GCSqG
# SIb3DQEBBQUAA4IBAQC0AETLIcP3foh5nbu2hVFS8uCUNZ5hEIR1eXmYZmZoBQq2
# 26ZAoT4CZwixlggC+n7WvAXJ5Pzxpl4wLV4loTiQzaKPX1w0ERo5ZRwLy0n56oG2
# 6QG+WTViT1C8rlgtVwkCFNOXr0kSSRs8FdaPllqKxK1hxYSL7zwNpumsk39F2cDt
# vhcekvH0V3BuGrQFm3dKN/0azW6GOod9+Vq4VzSyOe3kp15oxLBsZOFOu/REujcw
# Tzu2jt1asQKUm60CZ9wNHpYepR0Ww40uP1slbehEaFDa6V8b60/tlHHmBbJ4/fy5
# hJnYCvjzFz4O9VtT+JtP9ldRHWV3KpZ8ne3AjD+F
# -----END CERTIFICATE REQUEST-----

 

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