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(PHP Extension) DSA Generate KeyGenerates a DSA public/private key pair and saves to PEM and DER file formats (both encrypted and non-encrypted). An encrypted DSA PEM looks like this: -----BEGIN DSA PRIVATE KEY----- Proc-Type: 4,ENCRYPTED DEK-Info: DES-EDE3-CBC,9DAFD5C4CD62A5D0 QwDdp66sB0qKXQli7FbVcKL/eo3wu7kGRlV2sI8XbkNa1RTLiwnwTWDB0dqyWRQ8 ... Bx0HVfxKiNgCbL6BQEnYD+GOmMcckuj9Uhgloe/YuXCIDJBGhjUt/li3hvR/PXeC V2xxNl1XKBE88njqi+UXt4vjGVNLpvXM -----END DSA PRIVATE KEY-----
<?php // The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number. // For example, if using Chilkat v9.5.0.48, then include as shown here: include("chilkat_9_5_0.php"); // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. $dsa = new CkDsa(); // Call GenKey to generate a new DSA key. // The number of bits should be at least 1024 and a multiple // of 64. Typical values are either 1024 or 2048. // DSA key generation is compute intensive and may take // a short while to complete. $success = $dsa->GenKey(2048); if ($success != true) { print $dsa->lastErrorText() . "\n"; exit; } // Extract the private and public parts to PEM or DER format // and save to files... // First for the public key... // The public key never needs to be encrypted. // Save the public key in PEM format: $pemStr = $dsa->toPublicPem(); // This example will not check the return value of SaveText... $success = $dsa->SaveText($pemStr,'dsa_pub.pem'); // Save the public key in DER format: $success = $dsa->ToPublicDerFile('dsa_pub.der'); $bPublicOnly = true; // Save to XML $xmlStr = $dsa->toXml($bPublicOnly); $success = $dsa->SaveText($xmlStr,'dsa_pub.xml'); // ------------------------------------ // Now for the private key.... // ------------------------------------ // Unencrypted PEM: $pemStr = $dsa->toPem(); $success = $dsa->SaveText($pemStr,'dsa_priv.pem'); // Encrypted PEM: $pemStr = $dsa->toEncryptedPem('myPassword'); $success = $dsa->SaveText($pemStr,'dsa_privEncrypted.pem'); // DER: $success = $dsa->ToDerFile('dsa_priv.der'); // XML: $bPublicOnly = false; $xmlStr = $dsa->toXml($bPublicOnly); $success = $dsa->SaveText($xmlStr,'dsa_priv.xml'); print 'Finished!' . "\n"; ?> |
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