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(PHP Extension) Duplicate openssl dgst -sha256 -sign private.pem -out sha256.sig in.datDemonstrates how to duplicate this OpenSSL command: openssl dgst -sha256 -sign private.pem -out sha256.sig in.datThe in.dat file can contain text or binary data of any type. The OpenSSL command does the following:
<?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. $pkey = new CkPrivateKey(); // Load the private key from an PEM file: $success = $pkey->LoadPemFile('private.pem'); if ($success != true) { print $pkey->lastErrorText() . "\n"; exit; } $rsa = new CkRsa(); // Import the private key into the RSA component: $success = $rsa->ImportPrivateKeyObj($pkey); if ($success != true) { print $rsa->lastErrorText() . "\n"; exit; } // OpenSSL uses big-endian. $rsa->put_LittleEndian(false); // Load the file to be signed. $bdFileData = new CkBinData(); $success = $bdFileData->LoadFile('in.dat'); $bdSig = new CkBinData(); $success = $rsa->SignBd($bdFileData,'sha256',$bdSig); if ($success != true) { print $rsa->lastErrorText() . "\n"; exit; } // Save the binary signature to a file. $success = $bdSig->WriteFile('signature.sig'); if ($success != true) { print 'Failed to write signature.sig.' . "\n"; exit; } print 'Success.' . "\n"; ?> |
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