Classic ASP

ARC4 PRNG (Pseudo Random Number Generator)

Uses the ARC4 stream encryption algorithm as a pseudo random number generator.

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Classic ASP

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<%
' This example requires the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

set crypt = Server.CreateObject("Chilkat.Crypt2")

' Set the encryption algorithm to ARC4:	
crypt.CryptAlgorithm = "arc4"

' We want the encrypted output to be a hex-encoded string.
crypt.EncodingMode = "hex"

key = "000102030405060708090A0B0C0D0E0F"
data = "12345678"

' Key length is 128 bits in this example.
crypt.KeyLength = 128
crypt.SetEncodedKey key,"hex"

' Generate 16 "random" 8-byte blocks, encoded as hex strings.
' This example will generate the identical output each time
' it is run.

For i = 0 To 15
    cipherHex = crypt.EncryptStringENC(data)
    Response.Write "<pre>" & Server.HTMLEncode( data) & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( cipherHex) & "</pre>"
    data = cipherHex
Next

%>
</body>
</html>