(CkPython) CSR Get Extension Request

See more CSR Examples

If a CSR contains a 1.2.840.113549.1.9.14 extensionRequest, then this method will return the extension request in XML format.

Note: This example requires Chilkat v9.5.0.91 or greater.

Chilkat Python Downloads install with pip pip3 install chilkat or download... Python Module for Windows, MacOS, Linux, Alpine Linux, Solaris

import sys
import chilkat

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

csr = chilkat.CkCsr()

# Load a CSR PEM file.  The file should contain content that looks like this:
# 
# 	-----BEGIN CERTIFICATE REQUEST-----
# 	MII...
# 	....
# 	....
# 	....
# 	-----END CERTIFICATE REQUEST-----

fac = chilkat.CkFileAccess()
csrPem = fac.readEntireTextFile("qa_data/csr/sample.pem","utf-8")

success = csr.LoadCsrPem(csrPem)
if (success != True):
    print(csr.lastErrorText())
    sys.exit()

xml = chilkat.CkXml()

success = csr.GetExtensionRequest(xml)
if (success != True):
    print("CSR has no extensionRequest.")
    sys.exit()

xmlStr = xml.getXml()
print(xmlStr)

# Sample output:

# <?xml version="1.0" encoding="utf-8"?>
# <set>
#     <sequence>
#         <sequence>
#             <oid>1.3.6.1.4.1.311.20.2</oid>
#             <asnOctets>
#                 <printable>ZATCA-Code-Signing</printable>
#             </asnOctets>
#         </sequence>
#         <sequence>
#             <oid>2.5.29.17</oid>
#             <asnOctets>
#                 <sequence>
#                     <contextSpecific tag="4" constructed="1">
#                         <sequence>
#                             <set>
#                                 <sequence>
#                                     <oid>2.5.4.4</oid>
#                                     <utf8>334623324234325</utf8>
#                                 </sequence>
#                             </set>
#                             <set>
#                                 <sequence>
#                                     <oid>0.9.2342.19200300.100.1.1</oid>
#                                     <utf8>310122393500003</utf8>
#                                 </sequence>
#                             </set>
#                             <set>
#                                 <sequence>
#                                     <oid>2.5.4.12</oid>
#                                     <utf8>0000</utf8>
#                                 </sequence>
#                             </set>
#                             <set>
#                                 <sequence>
#                                     <oid>2.5.4.26</oid>
#                                     <utf8>Sample E</utf8>
#                                 </sequence>
#                             </set>
#                             <set>
#                                 <sequence>
#                                     <oid>2.5.4.15</oid>
#                                     <utf8>Sample Business</utf8>
#                                 </sequence>
#                             </set>
#                         </sequence>
#                     </contextSpecific>
#                 </sequence>
#             </asnOctets>
#         </sequence>
#     </sequence>
# </set>

# Use this online tool to generate parsing code from sample XML: 
# Generate Parsing Code from XML