(Perl) Load RSA Public Key from Hex Modulus and Exponent

Load an RSA public key from a hex modulus and exponent.

Chilkat Perl Downloads Perl Module for Windows, MacOS, Linux, Alpine Linux, Solaris

use chilkat();



# Load a 128-byte (1024-bit) modulus + exponent into a Chilkat public key object..
$modulus = "BF5F4AF9A018B5F324A0C10448C0D3248D9BE78967FDC551A27876AC5789ADCBA8245D3D942AE3799563D895DA801E765D225A54FA15DAB2C4731DD817DCF94A9AD62197074C2349442093A206234BF3747F0E88AA6F538355684CC1FB26FCE029C9050A1DAF9F507C2BABF6EFC9FB16320C8036721BE0279FBB76122C41E429";

$exponent = "00000003";

# We'll need to re-encode from hex to base64..
$bdModulus = chilkat::CkBinData->new();
$bdModulus->AppendEncoded($modulus,"hex");
$bdExponent = chilkat::CkBinData->new();
$bdExponent->AppendEncoded($exponent,"hex");

$xml = chilkat::CkXml->new();
$xml->put_Tag("RsaKeyValue");
$xml->NewChild2("Modulus",$bdModulus->getEncoded("base64"));
$xml->NewChild2("Exponent",$bdExponent->getEncoded("base64"));

# Now load into the pubkey object..
$pubkey = chilkat::CkPublicKey->new();
$success = $pubkey->LoadFromString($xml->getXml());
if ($success == 0) {
    print $pubkey->lastErrorText() . "\r\n";
    exit;
}

print "Success." . "\r\n";