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(PHP Extension) RSA SHA256 Signature using Private Key from Java KeystoreSigns plaintext using RSA SHA256 using a key from a Java keystore. Duplicatest this code: KeyStore keystore; // key repository for keys containing signature certificate String alias; // alias for the certificate in the key repository String password; // password for the certificate's private key String plaintext; // text being signed Signature signature = Signature.getInstance("SHA256withRSA"); signature.initSign((PrivateKey) keystore.getKey(alias, password.toCharArray())); signature.update(plaintext.getBytes("UTF-8")); byte[] rsa_text= signature.sign();
<?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 requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. $jks = new CkJavaKeyStore(); $jksPassword = 'secret'; // Load the Java keystore from a file. The JKS file password is used // to verify the keyed digest that is found at the very end of the keystore. // It verifies that the keystore has not been modified. $success = $jks->LoadFile($jksPassword,'qa_data/jks/sample_secret.jks'); if ($success != true) { print $jks->lastErrorText() . "\n"; exit; } // Get the private key from the JKS. // The private key password may be different than the file password. $privKeyPassword = 'secret'; $caseSensitive = false; // privKey is a CkPrivateKey $privKey = $jks->FindPrivateKey($privKeyPassword,'some.alias',$caseSensitive); if ($jks->get_LastMethodSuccess() != true) { print $jks->lastErrorText() . "\n"; exit; } // Establish the RSA object and tell it to use the private key.. $rsa = new CkRsa(); $success = $rsa->ImportPrivateKeyObj($privKey); if ($success != true) { print $rsa->lastErrorText() . "\n"; exit; } // Indicate we'll be signing the utf-8 byte representation of the string.. $rsa->put_Charset('utf-8'); // Sign some plaintext using RSA-SHA256 $binarySignature = new CkByteData(); $plaintext = 'this is the text to be signed'; $success = $rsa->SignString($plaintext,'SHA256',$binarySignature); if ($rsa->get_LastMethodSuccess() != true) { print $rsa->lastErrorText() . "\n"; exit; } // Alternatively, if the signature is desired in some encoded string form, // such as base64, base64-url, hex, etc. $rsa->put_EncodingMode('base64-url'); $signatureStr = $rsa->signStringENC($plaintext,'SHA256'); print 'base64-url RSA signature: ' . $signatureStr . "\n"; ?> |
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