Perl Requires Chilkat v9.5.0.65+

Generate CSR from Pre-Existing Private Key

See more CSR Examples

Demonstrates how to generate a Certificate Signing Request (CSR) from a pre-existing RSA private key. Chilkat2 Perl

use strict;
use warnings;
use Chilkat2;

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

my $privKey = Chilkat2::PrivateKey->new;

# Load the private key from a file.
# (Chilkat provides the ability to load private keys from many different
# formats and sources..)
my $success = $privKey->LoadEncryptedPemFile('qa_data/rsa/privKey1.pem', 'password');
if (!$success) {
    print $privKey->LastErrorText, "\n";
    exit;
}

# Create the CSR object and set properties.
my $csr = Chilkat2::Csr->new;

# Specify the Common Name.  This is the only required property.
# For SSL/TLS certificates, this would be the domain name.
# For email certificates this would be the email address.
$csr->CommonName('mysubdomain.mydomain.com');

# Country Name (2 letter code)
$csr->Country('GB');

# State or Province Name (full name)
$csr->State('Yorks');

# Locality Name (eg, city)
$csr->Locality('York');

# Organization Name (eg, company)
$csr->Company('Internet Widgits Pty Ltd');

# Organizational Unit Name (eg, secion/division)
$csr->CompanyDivision('IT');

# Email address
$csr->EmailAddress('support@mydomain.com');

# Create the CSR using the private key.
my $pemStr = $csr->GenCsrPem($privKey);
if (!$csr->LastMethodSuccess) {
    print $csr->LastErrorText, "\n";
    exit;
}

# Save the CSR..
my $fac = Chilkat2::FileAccess->new;
$fac->WriteEntireTextFile('qa_output/csr1.pem', $pemStr, 'utf-8', 0);

# Show the CSR.
print $pemStr, "\n";

# 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
#     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-----