Classic ASP Requires Chilkat v11.0.0+

RSA Encrypt and OpenSSL Decrypt

Demonstrates how to use Chilkat to RSA encrypt, and then use OpenSSL to decrypt.

Chilkat Classic ASP Downloads

Classic ASP

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<%
success = 0

'  This requires the Chilkat API to have been previously unlocked.
'  See Global Unlock Sample for sample code.

set rsa = Server.CreateObject("Chilkat.Rsa")

set privKey = Server.CreateObject("Chilkat.PrivateKey")
success = rsa.GenKey(2048,privKey)
success = privKey.SavePkcs8PemFile("qa_output/privKey.pem")

set pubKey = Server.CreateObject("Chilkat.PublicKey")
success = privKey.ToPublicKey(pubKey)

rsa.EncodingMode = "base64"
plainText = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz01234567890"
bUsePrivateKey = 0
success = rsa.UsePublicKey(pubKey)
encryptedStr = rsa.EncryptStringENC(plainText,bUsePrivateKey)

set bd = Server.CreateObject("Chilkat.BinData")
success = bd.AppendEncoded(encryptedStr,"base64")
success = bd.WriteFile("qa_output/enc.dat")

'  The OpenSSL command to decrypt is:
'  openssl pkeyutl -in enc.dat -inkey privKey.pem -keyform PEM -pkeyopt rsa_padding_mode:pkcs1 -decrypt

Response.Write "<pre>" & Server.HTMLEncode( "OK") & "</pre>"

%>
</body>
</html>