Duplicate openssl dgst -md5 -sign myKey.pem something.txt | openssl enc -base64 -A

Demonstrates how to duplicate the creation of an RSA signature produced by this OpenSSL command:

openssl dgst -md5 -sign myKey.pem something.txt | openssl enc -base64 -A

Download 32-bit Chilkat RSA ActiveX (.msi)

Download All 32-bit Chilkat ActiveX Components (.zip)

Download All 64-bit Chilkat ActiveX Components (.zip)

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<%
set pkey = Server.CreateObject("Chilkat.PrivateKey")

'  Load the private key from an RSA PEM file:
pkey.LoadPemFile "myKey.pem"

'  Get the private key in XML format:
pkeyXml = pkey.GetXml()

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

'  Any string argument automatically begins the 30-day trial.
success = rsa.UnlockComponent("30-day trial")
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( rsa.LastErrorText) & "</pre>"

End If

'  Import the private key into the RSA component:
success = rsa.ImportPrivateKey(pkeyXml)
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( rsa.LastErrorText) & "</pre>"

End If

'  OpenSSL uses BigEndian byte ordering:
rsa.LittleEndian = 0

'  The resulting signature will be a Base64 string:
rsa.EncodingMode = "base64"

'  For simplicity, we're not loading
'  the data to be signed from a file.  We are instead simply
'  using a literal string value.
strData = "This is the text to be signed."

'  Hash the input using MD5, and then sign the hash:
'  Other valid hash algorithm choices are "md2" and "sha-1".
base64Sig = rsa.SignStringENC(strData,"md5")

Response.Write "<pre>" & Server.HTMLEncode( base64Sig) & "</pre>"

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

%>
</body>
</html>