PHP ActiveX Requires Chilkat v11.0.0+

Generate an ECC Key (Public and Private)

See more ECC Examples

Demonstrates how to generate an ECC key and save both public and private parts. PHP ActiveX

<?php

$success = 0;

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

//  Create a Fortuna PRNG and seed it with system entropy.
//  This will be our source of random data for generating the ECC private key.
$fortuna = new COM("Chilkat.Prng");
$entropy = $fortuna->getEntropy(32,'base64');
$success = $fortuna->AddEntropy($entropy,'base64');

$ecc = new COM("Chilkat.Ecc");

//  Generate a random ECC private key on the secp256r1 curve.
//  Chilkat also supports other curves, such as secp384r1, secp521r1, and secp256k1.

$privKey = new COM("Chilkat.PrivateKey");
$success = $ecc->GenKey('secp256r1',$fortuna,$privKey);
if ($success == 0) {
    print $ecc->LastErrorText . "\n";
    exit;
}

//  Save the private key to PKCS8 encrypted PEM
//  (The private key can be saved in a variety of different formats. See the online reference documentation.)
$success = $privKey->SavePkcs8EncryptedPemFile('pemPassword','qa_output/eccPrivKey.pem');
if ($success != 1) {
    print $privKey->LastErrorText . "\n";
}

//  The private key PEM looks like this:

//  	-----BEGIN ENCRYPTED PRIVATE KEY-----
//  	MIHFMEAGCSqGSIb3DQEFDTAzMBsGCSqGSIb3DQEFDDAOBAhUmn+1/lwCIwICCAAw
//  	FAYIKoZIhvcNAwcECPlyNXAXZO+oBIGAIvxvTENXJWbrCwSjh0QNxLecBotUpfI5
//  	auOonLmwVMyt1ahMmNyVo/D+pnKQSE41Fg8fApM0DCDKZUOVCCcK1qirIsMPQkGp
//  	klPJbvrQRVYgzBtU31uNB5y2wqhrIeepal1HXBvbkUK0nfJMbcdz/XAEIQu2HhTD
//  	t6LMScPQld4=
//  	-----END ENCRYPTED PRIVATE KEY-----

//  Now get the public key part from the private key.
//  (A public key is actually a subset of the private key.)
$pubKey = new COM("Chilkat.PublicKey");
$privKey->ToPublicKey($pubKey);

//  Save the public key to a PEM file.
//  (The public key can be saved in a variety of different formats. See the online reference documentation.)
//  For ECC keys, the 1st argument (bPreferPkcs1) is ignored and unused.
$bPreferPkcs1 = 0;
$success = $pubKey->SavePemFile($bPreferPkcs1,'qa_output/eccPubKey.pem');

//  The public key PEM looks like this:

//  	-----BEGIN PUBLIC KEY-----
//  	MIIBSzCCAQMGByqGSM49AgEwgfcCAQEwLAYHKoZIzj0BAQIhAP////8AAAABAAAA
//  	AAAAAAAAAAAA////////////////MFsEIP////8AAAABAAAAAAAAAAAAAAAA////
//  	///////////8BCBaxjXYqjqT57PrvVV2mIa8ZR0GsMxTsPY7zjw+J9JgSwMVAMSd
//  	NgiG5wSTamZ44ROdJreBn36QBEEEaxfR8uEsQkf4vOblY6RA8ncDfYEt6zOg9KE5
//  	RdiYwpZP40Li/hp/m47n60p8D54WK84zV2sxXs7LtkBoN79R9QIhAP////8AAAAA
//  	//////////+85vqtpxeehPO5ysL8YyVRAgEBA0IABGdOH8uM6SfX3mdV+TR0mWp2
//  	gfVRPlxWxwhOiowuNByBxmQz7ZR4CJY1XcN2zkUo5pzW73ZhGwgd2XTOvqPqG40=
//  	-----END PUBLIC KEY-----
//  

print 'finished.' . "\n";

?>