Perl Requires Chilkat v11.0.0+
Perl
Sign MIME using RSASSA-PSS with SHA256
See more MIME Examples
Demonstrates how to sign an MIME using the RSASSA-PSS signing algorithm with the SHA256 hash algorithm.Chilkat Perl Downloads
use chilkat();
$success = 0;
# This requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.
$mime = chilkat::CkMime->new();
# Create a MIME message to sign.
$mime->NewMultipartMixed();
$mime->AddHeaderField("someHeader1","Some value 1");
$mime->AddHeaderField("someHeader2","Some value 2");
$part0 = chilkat::CkMime->new();
$part0->AddHeaderField("hdrA","Some value A");
$part0->AddHeaderField("hdrB","Some value B");
$part0->put_ContentType("text/plain");
$part0->SetBody("This is the plain-text body.");
$part1 = chilkat::CkMime->new();
$part1->AddHeaderField("hdrX","Some value X");
$part1->AddHeaderField("hdrY","Some value Y");
$part1->put_ContentType("text/xml");
$part1->SetBody("<a>This is the XML body</a>");
$mime->AppendPart($part0);
$mime->AppendPart($part1);
# The MIME to be signed:
$sbUnsignedMime = chilkat::CkStringBuilder->new();
$mime->GetMimeSb($sbUnsignedMime);
print $sbUnsignedMime->getAsString() . "\r\n";
# Content-Type: multipart/mixed; boundary="------------080303020600020604010008"
# someHeader1: Some value 1
# someHeader2: Some value 2
#
# --------------080303020600020604010008
# hdrA: Some value A
# hdrB: Some value B
# Content-Type: text/plain
#
# This is the plain-text body.
# --------------080303020600020604010008
# hdrX: Some value X
# hdrY: Some value Y
# Content-Type: text/xml
#
# <a>This is the XML body</a>
# --------------080303020600020604010008--
#
# Get a digital certificate with private key from a .pfx
# (Chilkat has many different ways to provide a cert + private key for siging.
# Using a PFX is just one possible option.)
$pfx = chilkat::CkPfx->new();
$success = $pfx->LoadPfxFile("qa_data/rsassa-pss/privatekey.pfx","PFX_PASSWORD");
if ($success == 0) {
print $pfx->lastErrorText() . "\r\n";
exit;
}
# Get the certificate to be used for signing.
# (The typical case for a PFX is that it contains a cert with an associated private key,
# as well as other certificates in the chain of authentication. The cert with the private
# key should be in the first position at index 0.)
$cert = chilkat::CkCert->new();
$success = $pfx->CertAt(0,$cert);
if ($success == 0) {
print $pfx->lastErrorText() . "\r\n";
exit;
}
# Indicate that RSASSA-PSS with SHA256 should be used.
$mime->put_SigningAlg("pss");
$mime->put_SigningHashAlg("sha256");
# Add a detached signature.
$success = $mime->AddDetachedSignature($cert);
if ($success != 1) {
print $mime->lastErrorText() . "\r\n";
exit;
}
# Show the clear-signed MIME. (see the sample output below)
print "-------------------------------------------------------------" . "\r\n";
print "Clear-signed MIME using detached signature:" . "\r\n";
print "-------------------------------------------------------------" . "\r\n";
print $mime->getMime() . "\r\n";
# Restore the original unsigned MIME, and this time create an opaque signature.
$mime->LoadMime($sbUnsignedMime->getAsString());
# Sign using an opaque signature
$success = $mime->ConvertToSigned($cert);
if ($success != 1) {
print $mime->lastErrorText() . "\r\n";
exit;
}
# Show the opaque-signed MIME. (see the sample output below)
print "-------------------------------------------------------------" . "\r\n";
print "Opaque-signed MIME :" . "\r\n";
print "-------------------------------------------------------------" . "\r\n";
print $mime->getMime() . "\r\n";
print "Success." . "\r\n";
# -----------------------------------------------
# This is sample output for the clear-signed MIME:
# -----------------------------------------------
#
# Content-Type: multipart/signed; boundary="----=_NextPart_672_c95a_97b64c9a.90b5204d";
# protocol="application/x-pkcs7-signature";
# micalg=sha256
#
# ------=_NextPart_672_c95a_97b64c9a.90b5204d
# Content-Type: multipart/mixed; boundary="------------030207090102000301050504"
# someHeader1: Some value 1
# someHeader2: Some value 2
#
# --------------030207090102000301050504
# hdrA: Some value A
# hdrB: Some value B
# Content-Type: text/plain
#
# This is the plain-text body.
# --------------030207090102000301050504
# hdrX: Some value X
# hdrY: Some value Y
# Content-Type: text/xml
#
# <a>This is the XML body</a>
# --------------030207090102000301050504--
#
# ------=_NextPart_672_c95a_97b64c9a.90b5204d
# Content-Transfer-Encoding: base64
# Content-Type: application/x-pkcs7-signature; name="smime.p7s"
# Content-Disposition: attachment; filename="smime.p7s"
#
# MIIG5wYJKoZIhvcNAQcCoIIG2DCCBtQCAQExDzANBglghkgBZQMEAgEFADALBgkqhkiG9w0BBwGg
# ggL4MIIC9DCCAl2gAwIBAgIJAMPsJCT11cniMA0GCSqGSIb3DQEBCwUAMIGSMQswCQYDVQQGEwJB
# VTERMA8GA1UECAwIVmljdG9yaWExEjAQBgNVBAcMCU1lbGJvdXJuZTEhMB8GA1UECgwYSW50ZXJu
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# neC8qw==
#
# ------=_NextPart_672_c95a_97b64c9a.90b5204d--
#
# -----------------------------------------------
# This is sample output for the opaque-signed MIME:
# -----------------------------------------------
# Content-Type: application/x-pkcs7-mime; name="smime.p7m"; smime-type="signed-data"
# someHeader1: Some value 1
# someHeader2: Some value 2
# Content-Disposition: attachment; filename="smime.p7m"
# Content-Transfer-Encoding: base64
#
# MIIItAYJKoZIhvcNAQcCoIIIpTCCCKECAQExDzANBglghkgBZQMEAgEFADCCAdYGCSqGSIb3DQEH
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#