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(PHP ActiveX) Sign MIME using RSASSA-PSS with SHA256

Demonstrates how to sign an MIME using the RSASSA-PSS signing algorithm with the SHA256 hash algorithm.

Note: This example requires Chilkat v9.5.0.67 or greater.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

//  This example assumes Chilkat Mime to have been previously unlocked.
//  See Unlock Mime for sample code.

$mime = new COM("Chilkat_9_5_0.Mime");

//  Create a MIME message to sign.
$mime->NewMultipartMixed();
$mime->AddHeaderField('someHeader1','Some value 1');
$mime->AddHeaderField('someHeader2','Some value 2');

$part0 = new COM("Chilkat_9_5_0.Mime");
$part0->AddHeaderField('hdrA','Some value A');
$part0->AddHeaderField('hdrB','Some value B');
$part0->ContentType = 'text/plain';
$part0->SetBody('This is the plain-text body.');

$part1 = new COM("Chilkat_9_5_0.Mime");
$part1->AddHeaderField('hdrX','Some value X');
$part1->AddHeaderField('hdrY','Some value Y');
$part1->ContentType = 'text/xml';
$part1->SetBody('<a>This is the XML body</a>');

$mime->AppendPart($part0);
$mime->AppendPart($part1);

//  The MIME to be signed:
$sbUnsignedMime = new COM("Chilkat_9_5_0.StringBuilder");
$mime->GetMimeSb($sbUnsignedMime);
print $sbUnsignedMime->getAsString() . "\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 = new COM("Chilkat_9_5_0.Pfx");
$success = $pfx->LoadPfxFile('qa_data/rsassa-pss/privatekey.pfx','PFX_PASSWORD');
if ($success != 1) {
    print $pfx->LastErrorText . "\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 is a Chilkat_9_5_0.Cert
$cert = $pfx->GetCert(0);
if ($pfx->LastMethodSuccess != 1) {
    print $pfx->LastErrorText . "\n";
    exit;
}

//  Indicate that RSASSA-PSS with SHA256 should be used.
$mime->SigningAlg = 'pss';
$mime->SigningHashAlg = 'sha256';

//  Add a detached signature.
$success = $mime->AddDetachedSignature($cert);
if ($success != 1) {
    print $mime->LastErrorText . "\n";

    exit;
}

//  Show the clear-signed MIME. (see the sample output below)
print '-------------------------------------------------------------' . "\n";
print 'Clear-signed MIME using detached signature:' . "\n";
print '-------------------------------------------------------------' . "\n";
print $mime->getMime() . "\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 . "\n";

    exit;
}

//  Show the opaque-signed MIME. (see the sample output below)
print '-------------------------------------------------------------' . "\n";
print 'Opaque-signed MIME :' . "\n";
print '-------------------------------------------------------------' . "\n";
print $mime->getMime() . "\n";

print 'Success.' . "\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
//  	ZXQgV2lkZ2l0cyBQdHkgTHRkMQ8wDQYDVQQDDAZXaWRnZXQxKDAmBgkqhkiG9w0BCQEWGWFkbWlu
//  	QGludGVybmV0d2lkZ2V0cy5jb20wHhcNMTYxMTAxMTY1MjMyWhcNMjExMDMxMTY1MjMyWjCBkjEL
//  	MAkGA1UEBhMCQVUxETAPBgNVBAgMCFZpY3RvcmlhMRIwEAYDVQQHDAlNZWxib3VybmUxITAfBgNV
//  	BAoMGEludGVybmV0IFdpZGdpdHMgUHR5IEx0ZDEPMA0GA1UEAwwGV2lkZ2V0MSgwJgYJKoZIhvcN
//  	AQkBFhlhZG1pbkBpbnRlcm5ldHdpZGdldHMuY29tMIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKB
//  	gQDGIdoCjyavs+F/Rm0VIB4m6O7VL1j+1IqieoR9NEX2GQvu2VCdceyxf9qaw1bxipEvjLwUkw7M
//  	e+BTlLpWQbBMH87s6KpsC8MVyXhMLpP0oM8NFix/vLz2wdLhUh7CZvJA0plqkJk9bj57QIu+EO1k
//  	tUHM2DFb6sckvCL2yybD1wIDAQABo1AwTjAdBgNVHQ4EFgQUONKKu2zsXIrinWxIGT654vrcQwsw
//  	HwYDVR0jBBgwFoAUONKKu2zsXIrinWxIGT654vrcQwswDAYDVR0TBAUwAwEB/zANBgkqhkiG9w0B
//  	AQsFAAOBgQArFvdi5u9i2QF1Qw+cdC1l7w2Y3+q6RIkln2W8rWJFje00644o8hXy7v46giJCedmF
//  	ULlhm1n7XIsZGy2W3lJ77v5agn9gFwXu1h3cqkGXkoteE6SQJQXWgsW3GWPveObvTL8LF4y57fgM
//  	9ZWS+V9MJajeu44Rf/tU17TLYKjvEjGCA7MwggOvAgEBMIGgMIGSMQswCQYDVQQGEwJBVTERMA8G
//  	A1UECAwIVmljdG9yaWExEjAQBgNVBAcMCU1lbGJvdXJuZTEhMB8GA1UECgwYSW50ZXJuZXQgV2lk
//  	Z2l0cyBQdHkgTHRkMQ8wDQYDVQQDDAZXaWRnZXQxKDAmBgkqhkiG9w0BCQEWGWFkbWluQGludGVy
//  	bmV0d2lkZ2V0cy5jb20CCQDD7CQk9dXJ4jANBglghkgBZQMEAgEFAKCCAjQwGAYJKoZIhvcNAQkD
//  	MQsGCSqGSIb3DQEHATAcBgkqhkiG9w0BCQUxDxcNMTcwNDIwMTU1NDMyWjAvBgkqhkiG9w0BCQQx
//  	IgQgFEtkdw1+iBXvplXCUkOPlq66b+mDg+HBcChLn5YowD8wXwYJKoZIhvcNAQkPMVIwUDALBglg
//  	hkgBZQMEAQIwCgYIKoZIhvcNAwcwDgYIKoZIhvcNAwICAgCAMA0GCCqGSIb3DQMCAgFAMAcGBSsO
//  	AwIHMA0GCCqGSIb3DQMCAgEoMIGxBgkrBgEEAYI3EAQxgaMwgaAwgZIxCzAJBgNVBAYTAkFVMREw
//  	DwYDVQQIDAhWaWN0b3JpYTESMBAGA1UEBwwJTWVsYm91cm5lMSEwHwYDVQQKDBhJbnRlcm5ldCBX
//  	aWRnaXRzIFB0eSBMdGQxDzANBgNVBAMMBldpZGdldDEoMCYGCSqGSIb3DQEJARYZYWRtaW5AaW50
//  	ZXJuZXR3aWRnZXRzLmNvbQIJAMPsJCT11cniMIGzBgsqhkiG9w0BCRACCzGBo6CBoDCBkjELMAkG
//  	A1UEBhMCQVUxETAPBgNVBAgMCFZpY3RvcmlhMRIwEAYDVQQHDAlNZWxib3VybmUxITAfBgNVBAoM
//  	GEludGVybmV0IFdpZGdpdHMgUHR5IEx0ZDEPMA0GA1UEAwwGV2lkZ2V0MSgwJgYJKoZIhvcNAQkB
//  	FhlhZG1pbkBpbnRlcm5ldHdpZGdldHMuY29tAgkAw+wkJPXVyeIwPQYJKoZIhvcNAQEKMDCgDTAL
//  	BglghkgBZQMEAgGhGjAYBgkqhkiG9w0BAQgwCwYJYIZIAWUDBAIBogMCASAEgYAvqIqKBzNXyVbh
//  	TmaxdAc4d0ZTqWT6Na3C+DMO8owSKWy5FdGbJ2DLKm92qe/KLPTcj51vuwLUQb0Sw7r5Xknl+/6p
//  	Eqn2qe/6hgDn06vvzNofVAweOtSVJsBO7/cYYPc+pXZZ2BcpZDdf/9Ci56Yrlk7A72BeqPe47J3F
//  	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
//  	AaCCAccEggHDQ29udGVudC1UeXBlOiBtdWx0aXBhcnQvbWl4ZWQ7IGJvdW5kYXJ5PSItLS0tLS0t
//  	LS0tLS0wMDA2MDcwNzA3MDcwMTA1MDAwMTA5MDciDQpzb21lSGVhZGVyMTogU29tZSB2YWx1ZSAx
//  	DQpzb21lSGVhZGVyMjogU29tZSB2YWx1ZSAyDQoNCi0tLS0tLS0tLS0tLS0tMDAwNjA3MDcwNzA3
//  	MDEwNTAwMDEwOTA3DQpoZHJBOiBTb21lIHZhbHVlIEENCmhkckI6IFNvbWUgdmFsdWUgQg0KQ29u
//  	dGVudC1UeXBlOiB0ZXh0L3BsYWluDQoNClRoaXMgaXMgdGhlIHBsYWluLXRleHQgYm9keS4NCi0t
//  	LS0tLS0tLS0tLS0tMDAwNjA3MDcwNzA3MDEwNTAwMDEwOTA3DQpoZHJYOiBTb21lIHZhbHVlIFgN
//  	Cmhkclk6IFNvbWUgdmFsdWUgWQ0KQ29udGVudC1UeXBlOiB0ZXh0L3htbA0KDQo8YT5UaGlzIGlz
//  	IHRoZSBYTUwgYm9keTwvYT4NCi0tLS0tLS0tLS0tLS0tMDAwNjA3MDcwNzA3MDEwNTAwMDEwOTA3
//  	LS0NCqCCAvgwggL0MIICXaADAgECAgkAw+wkJPXVyeIwDQYJKoZIhvcNAQELBQAwgZIxCzAJBgNV
//  	BAYTAkFVMREwDwYDVQQIDAhWaWN0b3JpYTESMBAGA1UEBwwJTWVsYm91cm5lMSEwHwYDVQQKDBhJ
//  	bnRlcm5ldCBXaWRnaXRzIFB0eSBMdGQxDzANBgNVBAMMBldpZGdldDEoMCYGCSqGSIb3DQEJARYZ
//  	YWRtaW5AaW50ZXJuZXR3aWRnZXRzLmNvbTAeFw0xNjExMDExNjUyMzJaFw0yMTEwMzExNjUyMzJa
//  	MIGSMQswCQYDVQQGEwJBVTERMA8GA1UECAwIVmljdG9yaWExEjAQBgNVBAcMCU1lbGJvdXJuZTEh
//  	MB8GA1UECgwYSW50ZXJuZXQgV2lkZ2l0cyBQdHkgTHRkMQ8wDQYDVQQDDAZXaWRnZXQxKDAmBgkq
//  	hkiG9w0BCQEWGWFkbWluQGludGVybmV0d2lkZ2V0cy5jb20wgZ8wDQYJKoZIhvcNAQEBBQADgY0A
//  	MIGJAoGBAMYh2gKPJq+z4X9GbRUgHibo7tUvWP7UiqJ6hH00RfYZC+7ZUJ1x7LF/2prDVvGKkS+M
//  	vBSTDsx74FOUulZBsEwfzuzoqmwLwxXJeEwuk/Sgzw0WLH+8vPbB0uFSHsJm8kDSmWqQmT1uPntA
//  	i74Q7WS1QczYMVvqxyS8IvbLJsPXAgMBAAGjUDBOMB0GA1UdDgQWBBQ40oq7bOxciuKdbEgZPrni
//  	+txDCzAfBgNVHSMEGDAWgBQ40oq7bOxciuKdbEgZPrni+txDCzAMBgNVHRMEBTADAQH/MA0GCSqG
//  	SIb3DQEBCwUAA4GBACsW92Lm72LZAXVDD5x0LWXvDZjf6rpEiSWfZbytYkWN7TTrjijyFfLu/jqC
//  	IkJ52YVQuWGbWftcixkbLZbeUnvu/lqCf2AXBe7WHdyqQZeSi14TpJAlBdaCxbcZY+945u9MvwsX
//  	jLnt+Az1lZL5X0wlqN67jhF/+1TXtMtgqO8SMYIDszCCA68CAQEwgaAwgZIxCzAJBgNVBAYTAkFV
//  	MREwDwYDVQQIDAhWaWN0b3JpYTESMBAGA1UEBwwJTWVsYm91cm5lMSEwHwYDVQQKDBhJbnRlcm5l
//  	dCBXaWRnaXRzIFB0eSBMdGQxDzANBgNVBAMMBldpZGdldDEoMCYGCSqGSIb3DQEJARYZYWRtaW5A
//  	aW50ZXJuZXR3aWRnZXRzLmNvbQIJAMPsJCT11cniMA0GCWCGSAFlAwQCAQUAoIICNDAYBgkqhkiG
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//  	DQEJBDEiBCBWTSl3s251U8fqOeSAzUp1Yue53X+UCWT0ux+fclE4FDBfBgkqhkiG9w0BCQ8xUjBQ
//  	MAsGCWCGSAFlAwQBAjAKBggqhkiG9w0DBzAOBggqhkiG9w0DAgICAIAwDQYIKoZIhvcNAwICAUAw
//  	BwYFKw4DAgcwDQYIKoZIhvcNAwICASgwgbEGCSsGAQQBgjcQBDGBozCBoDCBkjELMAkGA1UEBhMC
//  	QVUxETAPBgNVBAgMCFZpY3RvcmlhMRIwEAYDVQQHDAlNZWxib3VybmUxITAfBgNVBAoMGEludGVy
//  	bmV0IFdpZGdpdHMgUHR5IEx0ZDEPMA0GA1UEAwwGV2lkZ2V0MSgwJgYJKoZIhvcNAQkBFhlhZG1p
//  	bkBpbnRlcm5ldHdpZGdldHMuY29tAgkAw+wkJPXVyeIwgbMGCyqGSIb3DQEJEAILMYGjoIGgMIGS
//  	MQswCQYDVQQGEwJBVTERMA8GA1UECAwIVmljdG9yaWExEjAQBgNVBAcMCU1lbGJvdXJuZTEhMB8G
//  	A1UECgwYSW50ZXJuZXQgV2lkZ2l0cyBQdHkgTHRkMQ8wDQYDVQQDDAZXaWRnZXQxKDAmBgkqhkiG
//  	9w0BCQEWGWFkbWluQGludGVybmV0d2lkZ2V0cy5jb20CCQDD7CQk9dXJ4jA9BgkqhkiG9w0BAQow
//  	MKANMAsGCWCGSAFlAwQCAaEaMBgGCSqGSIb3DQEBCDALBglghkgBZQMEAgGiAwIBIASBgILtktxt
//  	tXWMWio7hLcvHUWk0Q3jP3rRdgNhcd/NdZsgDFP9/aq8/nHLLHSWfSh1PH+eZeKJwXxUH4Lwk6Sm
//  	xFt97jyi3HaC3fezUSEqyg5WFG6fwOZGK4qF0WF+q29lvyNyV3iIQgDWxZQOcVL2fhpqUjoytkxj
//  	/QTfrLOuzXKy
// 

?>

 

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