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(PHP ActiveX) Duplicate openssl dgst -sha256 -verify pubKey.pem -signature signature.sig in.datDemonstrates how to duplicate this OpenSSL command: openssl dgst -sha256 -verify pubKey.pem -signature signature.sig in.datThe in.dat file contains the original data that was signed, and can contain text or binary data of any type. The above OpenSSL command does the following:
<?php // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.PublicKey') $pubKey = new COM("Chilkat.PublicKey"); // Load the public key from an PEM file: $success = $pubKey->LoadFromFile('pubKey.pem'); if ($success != 1) { print $pubKey->LastErrorText . "\n"; exit; } // Load the data of the original file that was signed. // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.BinData') $bdFileData = new COM("Chilkat.BinData"); $success = $bdFileData->LoadFile('in.dat'); // Load the signature. // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.BinData') $bdSig = new COM("Chilkat.BinData"); $success = $bdSig->LoadFile('signature.sig'); // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Rsa') $rsa = new COM("Chilkat.Rsa"); // Import the public key into the RSA component: $success = $rsa->ImportPublicKeyObj($pubKey); if ($success != 1) { print $rsa->LastErrorText . "\n"; exit; } // OpenSSL uses big-endian. $rsa->LittleEndian = 0; $success = $rsa->VerifyBd($bdFileData,'sha256',$bdSig); if ($success != 1) { print $rsa->LastErrorText . "\n"; print 'The signature was invalid.' . "\n"; exit; } print 'The signature was verified.' . "\n"; ?> |
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