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(PHP Extension) RSA Sign with PKCS8 Encrypted KeySee more RSA ExamplesDemonstrates how to load a private key from an encrypted PKCS8 file and create an RSA digital signature.
<?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 assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. $pkey = new CkPrivateKey(); // Load the private key from an RSA PEM file: $success = $pkey->LoadPkcs8EncryptedFile('privateKey.key','myPassword'); // Get the private key in XML format: $pkeyXml = $pkey->getXml(); $rsa = new CkRsa(); // Import the private key into the RSA object: $success = $rsa->ImportPrivateKey($pkeyXml); if ($success != true) { print $rsa->lastErrorText() . "\n"; exit; } // Return the signature in hex $rsa->put_EncodingMode('hex'); $strData = 'This is the string to be signed.'; // Sign the string using the sha-1 hash algorithm. // Other valid choices are "md2", "sha256", "sha384", "sha512", and "md5". $hexSig = $rsa->signStringENC($strData,'sha-1'); print $hexSig . "\n"; ?> |
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