Robin P. Clark
a4b3002f75
made it create a bc script for larger keys (rather thn make the web page wait for the long calculations).
90 lines
2.1 KiB
PHP
90 lines
2.1 KiB
PHP
<html>
|
|
<body BGCOLOR="#00E0E0" link="#001fC0" vlink="#000080" text="#00000f">
|
|
<h1> Find d, the private key </h1>
|
|
<?php
|
|
$e = $_POST['e'];
|
|
$d = $_POST['d'];
|
|
$p = $_POST['p'];
|
|
$n = $_POST['n'];
|
|
$q = $_POST['q'];
|
|
$phi = $_POST['phi'];
|
|
$mprivate = $_POST['mprivate'];
|
|
|
|
printf("IN FIND D");
|
|
|
|
printf("<H1> PHI is %s</h1>",$phi);
|
|
|
|
//echo "debug n==$n";
|
|
|
|
$max_search = 10000;
|
|
|
|
// first find out whether the value typed in by the user
|
|
// satisfies the equation
|
|
$result = `./checkd $d $e $phi`;
|
|
echo " result of checkd $result";
|
|
$too_large=0;
|
|
printf("initial result %s <p>\n",$result);
|
|
if ( $result == "") { $result=0; $d=0; }
|
|
|
|
if ( $result == 1 ) {
|
|
echo " <h3> value $d matches the <strong> de % phi == 1 </strong> criteria </h3>";
|
|
printf("<form enctype=\"multipart/form-data\" method=\"post\"
|
|
action=\"generate_key.php#KEYS\">");
|
|
}
|
|
|
|
|
|
|
|
else {
|
|
|
|
|
|
echo " Iterating with start seed d $d";
|
|
for ($i=0; $i<$max_search; $i++) {
|
|
$y = $d + $i;
|
|
$result = `./searchd $y $phi $e `;
|
|
$dd = `./findd $y $phi $e`;
|
|
|
|
printf("Trying %s \n",$dd);
|
|
if ( $result == 0 ) {
|
|
// found one !
|
|
$d = $dd;
|
|
echo " matches criteria <p>";
|
|
break;
|
|
}
|
|
else {
|
|
echo " does not match <strong> de % phi == 1 </strong> criteria <p>\n";
|
|
}
|
|
|
|
}
|
|
|
|
if ( $i > $max_search || $too_large == 1) {
|
|
echo "<h1>d not found, try another seed, and check e is co-prime to phi </h1>";
|
|
printf("<form enctype=\"multipart/form-data\" method=\"post\"
|
|
action=\"generate_key.php#D\">");
|
|
|
|
}
|
|
else {
|
|
echo "<h1> Acceptable value for 'd' found after $i iterations </h1>\n";
|
|
printf("<form enctype=\"multipart/form-data\" method=\"post\"
|
|
action=\"generate_key.php#KEYS\">");
|
|
}
|
|
|
|
}
|
|
?>
|
|
|
|
<input type="hidden" name=d value=<?php echo $d ?>>
|
|
<input type="hidden" name=q value=<?php echo $q ?>>
|
|
<input type="hidden" name=p value=<?php echo $p ?>>
|
|
<input type="hidden" name=phi value=<?php echo $phi ?>>
|
|
<input type="hidden" name=e value=<?php echo $e ?>>
|
|
<input type="hidden" name=n value=<?php echo $n ?>>
|
|
<table>
|
|
<tr>
|
|
<td>
|
|
<input type="submit" name="submit" value="Next">
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
|
|
</body>
|
|
</html>
|