PureBasic Requires Chilkat v11.0.0+
PureBasic
Duplicate CSR Created by OpenSSL with Config.cnf
See more CSR Examples
Demonstrates how to duplicate a CSR created by the following commands:# Generate Private Key openssl ecparam -name secp256k1 -genkey -noout -out PrivateKey.pem #Generate CSR openssl req -new -sha256 -key PrivateKey.pem -extensions v3_req -config Config.cnf -out CSR.csr
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IncludeFile "CkEcc.pb"
IncludeFile "CkPrivateKey.pb"
IncludeFile "CkPrng.pb"
IncludeFile "CkXml.pb"
IncludeFile "CkCsr.pb"
IncludeFile "CkStringBuilder.pb"
Procedure ChilkatExample()
success.i = 0
; This example assumes the Chilkat API to have been previously unlocked.
; See Global Unlock Sample for sample code.
; This example duplicates the CSR created by OpenSSL with the following config file:
; oid_section = OIDs
; [ OIDs ]
; certificateTemplateName= 1.3.6.1.4.1.311.20.2
;
; [ req ]
; default_bits = 2048
; emailAddress = it@example.sa
; req_extensions = v3_req
; x509_extensions = v3_ca
; prompt = no
; default_md = sha256
; req_extensions = req_ext
; distinguished_name = dn
;
; [ v3_req ]
; basicConstraints = CA:FALSE
; keyUsage = digitalSignature, nonRepudiation, keyEncipherment
;
; [req_ext]
; certificateTemplateName = ASN1:PRINTABLESTRING:ZATCA-Code-Signing
; subjectAltName = dirName:alt_names
;
; [ dn ]
; CN =EXAMPLE-CORP # Common Name
; C=SA # Country Code e.g SA
; OU=HEAD-OFFICE # Organization Unit Name
; O=ASC # Organization Name
;
; [alt_names]
; SN=1-ASC|2-V01|3-1234567890 # EGS Serial Number 1-ABC|2-PQR|3-XYZ
; UID=312345678900003 # Organization Identifier (VAT Number)
; title=1100 # Invoice Type
; registeredAddress=Dammam # Address
; businessCategory=IT # Business Category
; The OpenSSL commands we are duplicating:
; openssl ecparam -name secp256k1 -genkey -noout -out PrivateKey.pem
; openssl req -new -sha256 -key PrivateKey.pem -extensions v3_req -config Config.cnf -out CSR.csr
; The 1st step is to actually use OpenSSL to generate a sample CSR.csr that we wish to duplicate.
; With the sample CSR.csr, we get the ExtensionRequest as XML.
; For example:
sbCsr.i = CkStringBuilder::ckCreate()
If sbCsr.i = 0
Debug "Failed to create object."
ProcedureReturn
EndIf
success = CkStringBuilder::ckLoadFile(sbCsr,"qa_data/csr/openssl_cnf/CSR.csr","utf-8")
If success = 0
Debug "Failed to load CSR.csr"
CkStringBuilder::ckDispose(sbCsr)
ProcedureReturn
EndIf
csr0.i = CkCsr::ckCreate()
If csr0.i = 0
Debug "Failed to create object."
ProcedureReturn
EndIf
success = CkCsr::ckLoadCsrPem(csr0,CkStringBuilder::ckGetAsString(sbCsr))
If success = 0
Debug CkCsr::ckLastErrorText(csr0)
CkStringBuilder::ckDispose(sbCsr)
CkCsr::ckDispose(csr0)
ProcedureReturn
EndIf
xml0.i = CkXml::ckCreate()
If xml0.i = 0
Debug "Failed to create object."
ProcedureReturn
EndIf
success = CkCsr::ckGetExtensionRequest(csr0,xml0)
If success = 0
Debug CkCsr::ckLastErrorText(csr0)
CkStringBuilder::ckDispose(sbCsr)
CkCsr::ckDispose(csr0)
CkXml::ckDispose(xml0)
ProcedureReturn
EndIf
; Let's examine the extension request..
Debug CkXml::ckGetXml(xml0)
; <?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>1-ASC|2-V01|3-1234567890</utf8>
; </sequence>
; </set>
; <set>
; <sequence>
; <oid>0.9.2342.19200300.100.1.1</oid>
; <utf8>312345678900003</utf8>
; </sequence>
; </set>
; <set>
; <sequence>
; <oid>2.5.4.12</oid>
; <utf8>1100</utf8>
; </sequence>
; </set>
; <set>
; <sequence>
; <oid>2.5.4.26</oid>
; <utf8>Dammam</utf8>
; </sequence>
; </set>
; <set>
; <sequence>
; <oid>2.5.4.15</oid>
; <utf8>IT</utf8>
; </sequence>
; </set>
; </sequence>
; </contextSpecific>
; </sequence>
; </asnOctets>
; </sequence>
; </sequence>
; </set>
; If you wish to generate the above XML without going through the above steps, copy the XML into
; the online tool at https://tools.chilkat.io/xmlCreate
; Here is the generated code for the above XML:
xml.i = CkXml::ckCreate()
If xml.i = 0
Debug "Failed to create object."
ProcedureReturn
EndIf
CkXml::setCkTag(xml, "set")
CkXml::ckUpdateChildContent(xml,"sequence|sequence|oid","1.3.6.1.4.1.311.20.2")
CkXml::ckUpdateChildContent(xml,"sequence|sequence|asnOctets|printable","ZATCA-Code-Signing")
CkXml::ckUpdateChildContent(xml,"sequence|sequence[1]|oid","2.5.29.17")
CkXml::ckUpdateAttrAt(xml,"sequence|sequence[1]|asnOctets|sequence|contextSpecific",1,"tag","4")
CkXml::ckUpdateAttrAt(xml,"sequence|sequence[1]|asnOctets|sequence|contextSpecific",1,"constructed","1")
CkXml::ckUpdateChildContent(xml,"sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set|sequence|oid","2.5.4.4")
CkXml::ckUpdateChildContent(xml,"sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set|sequence|utf8","1-ASC|2-V01|3-1234567890")
CkXml::ckUpdateChildContent(xml,"sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[1]|sequence|oid","0.9.2342.19200300.100.1.1")
CkXml::ckUpdateChildContent(xml,"sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[1]|sequence|utf8","312345678900003")
CkXml::ckUpdateChildContent(xml,"sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[2]|sequence|oid","2.5.4.12")
CkXml::ckUpdateChildContent(xml,"sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[2]|sequence|utf8","1100")
CkXml::ckUpdateChildContent(xml,"sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[3]|sequence|oid","2.5.4.26")
CkXml::ckUpdateChildContent(xml,"sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[3]|sequence|utf8","Dammam")
CkXml::ckUpdateChildContent(xml,"sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[4]|sequence|oid","2.5.4.15")
CkXml::ckUpdateChildContent(xml,"sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[4]|sequence|utf8","IT")
; We'll need a new secp256k1 private key, so let's generate it.
ecdsa.i = CkEcc::ckCreate()
If ecdsa.i = 0
Debug "Failed to create object."
ProcedureReturn
EndIf
prng.i = CkPrng::ckCreate()
If prng.i = 0
Debug "Failed to create object."
ProcedureReturn
EndIf
privKey.i = CkPrivateKey::ckCreate()
If privKey.i = 0
Debug "Failed to create object."
ProcedureReturn
EndIf
success = CkEcc::ckGenKey(ecdsa,"secp256k1",prng,privKey)
If success = 0
Debug CkEcc::ckLastErrorText(ecdsa)
CkStringBuilder::ckDispose(sbCsr)
CkCsr::ckDispose(csr0)
CkXml::ckDispose(xml0)
CkXml::ckDispose(xml)
CkEcc::ckDispose(ecdsa)
CkPrng::ckDispose(prng)
CkPrivateKey::ckDispose(privKey)
ProcedureReturn
EndIf
Debug "Generated secp256k1 private key."
; Use a new CSR object to generate a CSR with the private key and extension request.
csr.i = CkCsr::ckCreate()
If csr.i = 0
Debug "Failed to create object."
ProcedureReturn
EndIf
; Add the [dn] fields
; [ dn ]
; CN =EXAMPLE-CORP # Common Name
; C=SA # Country Code e.g SA
; OU=HEAD-OFFICE # Organization Unit Name
; O=ASC # Organization Name
CkCsr::setCkCommonName(csr, "EXAMPLE-CORP")
CkCsr::setCkCountry(csr, "SA")
CkCsr::setCkCompanyDivision(csr, "HEAD-OFFICE")
CkCsr::setCkCompany(csr, "ASC")
; Add the extension request to the CSR
CkCsr::ckSetExtensionRequest(csr,xml)
; Generate the CSR with the extension request
csrPem.s = CkCsr::ckGenCsrPem(csr,privKey)
If CkCsr::ckLastMethodSuccess(csr) = 0
Debug CkCsr::ckLastErrorText(csr)
CkStringBuilder::ckDispose(sbCsr)
CkCsr::ckDispose(csr0)
CkXml::ckDispose(xml0)
CkXml::ckDispose(xml)
CkEcc::ckDispose(ecdsa)
CkPrng::ckDispose(prng)
CkPrivateKey::ckDispose(privKey)
CkCsr::ckDispose(csr)
ProcedureReturn
EndIf
Debug csrPem
; Sample output:
; -----BEGIN CERTIFICATE REQUEST-----
; MIIBuDCCAV8CAQAwSDEVMBMGA1UEAwwMRVhBTVBMRS1DT1JQMQswCQYDVQQGEwJT
; QTEUMBIGA1UECwwLSEVBRC1PRkZJQ0UxDDAKBgNVBAoMA0FTQzBWMBAGByqGSM49
; AgEGBSuBBAAKA0IABFI5rusr76HiJcMMr1r4L0B0BOAs6azLkt/RwHoT6A0xFRRt
; tulWT40tNhx3qJ4I5ePNgMceOEtuK1kMGVTovI6ggbcwgbQGCSqGSIb3DQEJDjGB
; pjCBozAhBgkrBgEEAYI3FAIEFBMSWkFUQ0EtQ29kZS1TaWduaW5nMH4GA1UdEQR3
; MHWkczBxMSEwHwYDVQQEDBgxLUFTQ3wyLVYwMXwzLTEyMzQ1Njc4OTAxHzAdBgoJ
; kiaJk/IsZAEBDA8zMTIzNDU2Nzg5MDAwMDMxDTALBgNVBAwMBDExMDAxDzANBgNV
; BBoMBkRhbW1hbTELMAkGA1UEDwwCSVQwCgYIKoZIzj0EAwIDRwAwRAIgJnbgpSGb
; diB+0M1VTqc1GU9sFsfnOvVN/8WhWRRxQIwCIF5eH9vgMgXyoU284X8Bx3dqOJ4q
; xashGWci87POxSvT
; -----END CERTIFICATE REQUEST-----
CkStringBuilder::ckDispose(sbCsr)
CkCsr::ckDispose(csr0)
CkXml::ckDispose(xml0)
CkXml::ckDispose(xml)
CkEcc::ckDispose(ecdsa)
CkPrng::ckDispose(prng)
CkPrivateKey::ckDispose(privKey)
CkCsr::ckDispose(csr)
ProcedureReturn
EndProcedure