Perl Requires Chilkat v11.0.0+

RSA Encrypt RSA/ECB/OAEPWithSHA1AndMGF1Padding

See more RSA Examples

Demonstrates how to RSA encrypt using RSA/ECB/OAEPWithSHA1AndMGF1Padding. Also demonstrates RSA/ECB/OAEPWithSHA-256AndMGF1Padding. Both of these terms are from Java's JCE. Note: In this context, "ECB" doesn't actually mean anything. It's a symmetric cipher mode that doesn't apply (or make sense) in this context. Perl

use chilkat();

$success = 0;

#  This example assumes the Chilkat API to have been previously unlocked.
#  See Global Unlock Sample for sample code.

$rsa = chilkat::CkRsa->new();

#  First load a public key object with a public key.
#  In this case, we'll load it from a file.
$pubkey = chilkat::CkPublicKey->new();
$success = $pubkey->LoadFromFile("qa_data/pem/rsa_public.pem");
if ($success == 0) {
    print $pubkey->lastErrorText() . "\r\n";
    exit;
}

#  RSA encryption is limited to small amounts of data. The limit
#  is typically a few hundred bytes and is based on the key size and
#  padding (OAEP vs. PKCS1_5).  RSA encryption is typically used for
#  encrypting hashes or symmetric (bulk encryption algorithm) secret keys.
$plainText = "Time is an illusion. Lunchtime doubly so.";

#  Import the public key to be used for encrypting.
$success = $rsa->UsePublicKey($pubkey);

#  To get OAEP padding, set the PkcsPadding property equal to 0
$rsa->put_PkcsPadding(0);
$rsa->put_OaepHash("sha256");

#  Indicate we'll want hex output
$rsa->put_EncodingMode("hex");

#  Encrypt..
$usePrivateKey = 0;
$encryptedStr = $rsa->encryptStringENC($plainText,$usePrivateKey);
print $encryptedStr . "\r\n";

#  -------------------------------------------------
#  Now decrypt with the matching private key.
$rsa2 = chilkat::CkRsa->new();

$privKey = chilkat::CkPrivateKey->new();
$success = $privKey->LoadEncryptedPem("qa_data/pem/rsa_passwd.pem","passwd");
if ($success == 0) {
    print $privKey->lastErrorText() . "\r\n";
    exit;
}

$success = $rsa2->UsePrivateKey($privKey);

#  Make sure we have the same settings used for encryption.
$rsa2->put_PkcsPadding(0);
$rsa2->put_EncodingMode("hex");
$rsa2->put_OaepHash("sha256");

$originalStr = $rsa2->decryptStringENC($encryptedStr,1);

print $originalStr . "\r\n";