B4X Requires Chilkat v11.0.0+

Generate CSR with Uncommon Fields

See more CSR Examples

Demonstrates how to generate a new RSA key and a Certificate Signing Request (CSR) for this:

csr.common.name=Admin forInformation-MainShop
csr.serial.number=1-XYZ|2-2.0|3-999695
csr.organization.identifier=990099994100099
csr.organization.unit.name=9999910000
csr.organization.name=9999910000
csr.country.name=SA
csr.invoice.type=1100
csr.location.address=King Fahed Road
csr.industry.business.category=MainOffice

B4X

Dim success As Boolean = False

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

'  First generate an RSA private key.
Dim rsa As ChilkatRsa
rsa.Initialize

'  Generate a random 2048-bit RSA key.
Dim privKey As ChilkatPrivateKey
privKey.Initialize("privKey")
success = rsa.GenKey(2048, privKey)
If success = False Then
    Log(rsa.LastErrorText)
    Return
End If


'  Create the CSR object and set properties.
Dim csr As ChilkatCsr
csr.Initialize

csr.CommonName = "Admin forInformation-MainShop"

'  Country Name (2 letter code)
csr.Country = "SA"

'  Organization Name (eg, company)
csr.Company = "9999910000"

'  Organizational Unit Name (eg, secion/division)
csr.CompanyDivision = "9999910000"

'  See https://www.alvestrand.no/objectid/2.5.4.html for OIDs for the following fields:

'  csr.serial.number=1-XYZ|2-2.0|3-999695
'  2.5.4.5 - id-at-serialNumber 
csr.SetSubjectField("2.5.4.5", "1-XYZ|2-2.0|3-999695", "UTF8String")

'  csr.organization.identifier=990099994100099
'  2.5.4.45 - id-at-uniqueIdentifier   Don't know if this is correct.
csr.SetSubjectField("2.5.4.45", "1100", "UTF8String")

'  csr.invoice.type=1100
'  Don't know what this OID would be...
csr.SetSubjectField("2.5.4.99", "1100", "UTF8String")

'  csr.location.address=King Fahed Road
'  2.5.4.9 - id-at-streetAddress 
csr.SetSubjectField("2.5.4.9", "King Fahed Road", "UTF8String")

'  csr.industry.business.category=MainOffice
'  2.5.4.15 - id-at-businessCategory 
csr.SetSubjectField("2.5.4.15", "MainOffice", "UTF8String")

'  Create the CSR using the private key.
Dim pemStr As String = csr.GenCsrPem(privKey)
If csr.LastMethodSuccess <> True Then
    Log(csr.LastErrorText)
    Return
End If


'  Save the private key and CSR to a files.
privKey.SavePkcs8EncryptedPemFile("password", "qa_output/privKey1.pem")

Dim fac As ChilkatFileAccess
fac.Initialize
fac.WriteEntireTextFile("qa_output/csr1.pem", pemStr, "utf-8", False)

'  Show the CSR.
Log(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
'  ...
'  ...
'  	hJnYCvjzFz4O9VtT+JtP9ldRHWV3KpZ8ne3AjD+F
'  	-----END CERTIFICATE REQUEST-----