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(Lianja) Generate a CSR with SAN (Subject Alternative Name) Extension

Demonstrates how to generate a private key and a Certificate Signing Request (CSR) that includes the SAN extension.

Note: This example requires Chilkat v9.5.0.84 or greater.

Chilkat Lianja Extension Download

Chilkat Lianja Extension

// Note: Requires Chilkat v9.5.0.84 or greater.

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

// First generate an RSA private key.
// (It is also possible to create CSRs based on ECDSA private keys..)
loRsa = createobject("CkRsa")

// Generate a random 2048-bit RSA key.
llSuccess = loRsa.GenerateKey(2048)
if (llSuccess <> .T.) then
    ? loRsa.LastErrorText
    release loRsa
    return
endif

// Get the private key
loPrivKey = loRsa.ExportPrivateKeyObj()

// Create the CSR object and set properties.
loCsr = createobject("CkCsr")

// Specify the Common Name. 
loCsr.CommonName = "mysubdomain.mydomain.com"

// Country Name (2 letter code)
loCsr.Country = "GB"

// State or Province Name (full name)
loCsr.State = "Yorks"

// Locality Name (eg, city)
loCsr.Locality = "York"

// Organization Name (eg, company)
loCsr.Company = "Internet Widgits Pty Ltd"

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

// Email address
loCsr.EmailAddress = "support@mydomain.com"

// Add Subject Alternative Names
// (The AddSan method is added in Chilkat v9.5.0.84)
// Call AddSan for each alternative name.
llSuccess = loCsr.AddSan("dnsName","mydomain.com")
llSuccess = loCsr.AddSan("dnsName","mysubdomain.mydomain.com")
llSuccess = loCsr.AddSan("ipAddress","192.168.0.123")

// Create the CSR using the private key.
lcPemStr = loCsr.GenCsrPem(loPrivKey)
if (loCsr.LastMethodSuccess <> .T.) then
    ? loCsr.LastErrorText
    release loPrivKey
    release loRsa
    release loCsr
    return
endif

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

loFac = createobject("CkFileAccess")
loFac.WriteEntireTextFile("qa_output/csr1.pem",lcPemStr,"utf-8",.F.)

// Show the CSR.
? lcPemStr

// Sample output:

// 	-----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-----


release loRsa
release loCsr
release loFac

 

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