Created
July 28, 2014 22:45
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Encrypt password duing login with temporary public/private keys
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| <?php | |
| // THIS IS A PROOF OF CONCEPT. | |
| // YOU SHOULD STORE THE PRIVATE KEY SERVER-SIDE (EG. IN THE SESSION) | |
| if( $_SERVER[ 'REQUEST_METHOD'] === "POST" ) | |
| { | |
| $res = openssl_pkey_get_private( $_POST[ 'privKey' ] ); | |
| openssl_private_decrypt( hex2bin( $_POST[ 'enc' ] ), $decrypted, $res ); | |
| var_dump( $decrypted ); | |
| echo "<br />" . microtime(true); | |
| exit(); | |
| } | |
| $res = openssl_pkey_new( array( | |
| "digest_alg" => "sha256", | |
| "private_key_bits" => 1024, | |
| "private_key_type" => OPENSSL_KEYTYPE_RSA, | |
| ) ); | |
| openssl_pkey_export($res, $privKey); | |
| $details = openssl_pkey_get_details($res); | |
| $n = $details[ 'rsa' ][ 'n' ]; | |
| $e = $details[ 'rsa' ][ 'e' ]; | |
| openssl_pkey_free( $res ); | |
| unset( $details ); | |
| ?> | |
| <html> | |
| <head> | |
| <script type="text/javascript" src="http://www-cs-students.stanford.edu/~tjw/jsbn/prng4.js"></script> | |
| <script type="text/javascript" src="http://www-cs-students.stanford.edu/~tjw/jsbn/rng.js"></script> | |
| <script type="text/javascript" src="http://www-cs-students.stanford.edu/~tjw/jsbn/jsbn.js"></script> | |
| <script type="text/javascript" src="http://www-cs-students.stanford.edu/~tjw/jsbn/rsa.js"></script> | |
| </head> | |
| <body> | |
| <div><input type="text" name="pass" id="pass" value="" style="width: 100%" /></div> | |
| <form action="?" method="POST" target="result"> | |
| <div><input type="text" name="enc" id="enc" value="" style="width: 100%" /></div> | |
| <div> | |
| <button type="button" onclick="generate();return false;">Generate</button> | |
| <button type="submit">Send</button> | |
| </div> | |
| <div><textarea name="privKey" style="width: 100%; height: 50px;"><?php echo htmlspecialchars( $privKey ) ?></textarea></div> | |
| </form> | |
| <script type="text/javascript"> | |
| var n = <?php echo json_encode( bin2hex( $n ) ); ?>, | |
| e = <?php echo json_encode( bin2hex( $e ) ); ?>, | |
| key = new RSAKey(), | |
| el_pass = document.getElementById( 'pass' ), | |
| el_enc = document.getElementById( 'enc' ); | |
| key.setPublic( n, e ) | |
| function generate() { | |
| el_enc.value = key.encrypt( el_pass.value ); | |
| } | |
| </script> | |
| <iframe name="result" style="width: 100%; height: 200px;"></iframe> | |
| </body> | |
| </html> |
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