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(Chilkat2-Python) Generate a CSR containing an Extension RequestSee more CSR ExamplesDemonstrates how to generate a CSR containing a 1.2.840.113549.1.9.14 extensionRequest. Note: This example requires Chilkat v9.5.0.91 or greater.
import sys import chilkat2 # This requires the Chilkat API to have been previously unlocked. # See Global Unlock Sample for sample code. # This example will generate a secp256r1 ECDSA key for the CSR. ecc = chilkat2.Ecc() prng = chilkat2.Prng() # privKey is a CkPrivateKey privKey = ecc.GenEccKey("secp256r1",prng) if (ecc.LastMethodSuccess == False): print("Failed to generate a new ECDSA private key.") sys.exit() csr = chilkat2.Csr() # Add common CSR fields: csr.CommonName = "mysubdomain.mydomain.com" csr.Country = "GB" csr.State = "Yorks" csr.Locality = "York" csr.Company = "Internet Widgits Pty Ltd" csr.EmailAddress = "support@mydomain.com" # Add the following 1.2.840.113549.1.9.14 extensionRequest # Note: The easiest way to know the content and format of the XML to be added is to examine # a pre-existing CSR with the same desired extensionRequest. You can use Chilkat to # get the extensionRequest from an existing CSR. # # Here is a sample extension request: # <?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 code from sample XML: # Generate Code to Create XML # Here's the code to generate the above extension request. xml = chilkat2.Xml() xml.Tag = "set" xml.UpdateChildContent("sequence|sequence|oid","1.3.6.1.4.1.311.20.2") xml.UpdateChildContent("sequence|sequence|asnOctets|printable","ZATCA-Code-Signing") xml.UpdateChildContent("sequence|sequence[1]|oid","2.5.29.17") xml.UpdateAttrAt("sequence|sequence[1]|asnOctets|sequence|contextSpecific",True,"tag","4") xml.UpdateAttrAt("sequence|sequence[1]|asnOctets|sequence|contextSpecific",True,"constructed","1") xml.UpdateChildContent("sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set|sequence|oid","2.5.4.4") xml.UpdateChildContent("sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set|sequence|utf8","334623324234325") xml.UpdateChildContent("sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[1]|sequence|oid","0.9.2342.19200300.100.1.1") xml.UpdateChildContent("sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[1]|sequence|utf8","310122393500003") xml.UpdateChildContent("sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[2]|sequence|oid","2.5.4.12") xml.UpdateChildContent("sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[2]|sequence|utf8","0000") xml.UpdateChildContent("sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[3]|sequence|oid","2.5.4.26") xml.UpdateChildContent("sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[3]|sequence|utf8","Sample E") xml.UpdateChildContent("sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[4]|sequence|oid","2.5.4.15") xml.UpdateChildContent("sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[4]|sequence|utf8","Sample Business") # Add the extension request to the CSR csr.SetExtensionRequest(xml) # Generate the CSR with the extension request csrPem = csr.GenCsrPem(privKey) if (csr.LastMethodSuccess == False): print(csr.LastErrorText) sys.exit() print(csrPem) # Sample PEM output: # -----BEGIN CERTIFICATE REQUEST----- # MIICEjCCAbkCAQAwgZcxITAfBgNVBAMMGG15c3ViZG9tYWluLm15ZG9tYWluLmNv # bTELMAkGA1UEBhMCR0IxDjAMBgNVBAgMBVlvcmtzMQ0wCwYDVQQHDARZb3JrMSEw # HwYDVQQKDBhJbnRlcm5ldCBXaWRnaXRzIFB0eSBMdGQxIzAhBgkqhkiG9w0BCQEW # FHN1cHBvcnRAbXlkb21haW4uY29tMFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAE # g8EVNSV0ttlM9kG2E+J3ZB9WEDYVf2QA/8idrPRUafia1CHjd1kslwZA8eP2bAcf # 2O493QAENqtW6DTHJbRz8KCBvjCBuwYJKoZIhvcNAQkOMYGtMIGqMCEGCSsGAQQB # gjcUAgQUExJaQVRDQS1Db2RlLVNpZ25pbmcwgYQGA1UdEQR9MHukeTB3MRgwFgYD # VQQEDA8zMzQ2MjMzMjQyMzQzMjUxHzAdBgoJkiaJk/IsZAEBDA8zMTAxMjIzOTM1 # MDAwMDMxDTALBgNVBAwMBDAwMDAxETAPBgNVBBoMCFNhbXBsZSBFMRgwFgYDVQQP # DA9TYW1wbGUgQnVzaW5lc3MwCgYIKoZIzj0EAwIDRwAwRAIgF7D30eSBklfo+oel # 1B0z64eJDB9MB3rCoiFZlj+mz0YCIHYI87eyqdtw2LOcAoBRhyxlBT6i28+Z/8t9 # bYsMIYvp # -----END CERTIFICATE REQUEST----- |
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