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(PHP ActiveX) Generate an ECC Key (Public and Private)Demonstrates how to generate an ECC key and save both public and private parts.
<?php // 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. // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Prng') $fortuna = new COM("Chilkat.Prng"); $entropy = $fortuna->getEntropy(32,'base64'); $success = $fortuna->AddEntropy($entropy,'base64'); // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Ecc') $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 is a Chilkat.PrivateKey $privKey = $ecc->GenEccKey('secp256r1',$fortuna); if ($ecc->LastMethodSuccess == 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 is a Chilkat.PublicKey $pubKey = $privKey->GetPublicKey(); // 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"; ?> |
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