Perl Requires Chilkat v10.0.0+

Apple Keychain - Create RSA Signature

See more Apple Keychain Examples

Using an RSA private key stored in the Apple Keychain, create a signature by signing the SHA-256 hash of the provided string, then return the signature encoded in Base64 format. Chilkat2 Perl

use strict;
use warnings;
use Chilkat2;

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

my $cert = Chilkat2::Cert->new;

# On MacOS and iOS, the LoadByCommonName function will search the Apple Keychain for the matching certificate.

# A digital certificate's Common Name (CN) is a field in the certificate that specifies the name of the entity the
# certificate is issued to. It is often used to identify the domain name, hostname, or organization the certificate represents.

# For example:
# - In an SSL/TLS certificate for a website, the CN typically contains the domain name (e.g., "www.example.com").
# - For certificates representing individuals or organizations, the CN might include the person's name or the organization's name.

# The CN is part of the certificate's Subject field and is crucial for verifying that the certificate corresponds
# to the intended entity, especially in SSL/TLS communications.

my $success = $cert->LoadByCommonName('Example, Inc.');
if (!$success) {
    print $cert->LastErrorText, "\n";
    exit;
}

my $rsa = Chilkat2::Rsa->new;
$success = $rsa->SetX509Cert($cert, 1);
if (!$success) {
    print $rsa->LastErrorText, "\n";
    exit;
}

# Generate an RSA signature by signing the SHA-256 hash of the provided string,
# then return the signature encoded in Base64 format.
$rsa->EncodingMode('base64');
my $sigBase64 = $rsa->SignStringENC('to be signed', 'sha256');
if (!$rsa->LastMethodSuccess) {
    print $rsa->LastErrorText, "\n";
    exit;
}

print "RSA Signature:\n";
print $sigBase64, "\n";