(Classic ASP) PBES2 Password-Based Encryption

See more Encryption Examples

Demonstrates PBES2 encryption

For more information, see https://www.chilkatsoft.com/explaining_pbes2_encryption.asp

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ActiveX for 32-bit and 64-bit Windows

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

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

' Set properties for PBES2 encryption:

' When the encryption algorithm is set to "pbes2",
' Chilkat will automatically derive the actual secret key using PBKDF2 and
' the specified paramters: password, salt, iteration count, hash function, and desired key length.

crypt.CryptAlgorithm = "pbes2"
crypt.PbesPassword = "mySecretPassword"

' Set the underlying PBE algorithm (and key length):
crypt.PbesAlgorithm = "aes"
crypt.KeyLength = 256

crypt.SetEncodedIV "000102030405060708090A0B0C0D0E0F","hex"

' Give it some salt:
crypt.SetEncodedSalt "0102030405060708","hex"

' A higher iteration count makes the algorithm more
' computationally expensive and therefore exhaustive
' searches (for breaking the encryption) is more difficult:
crypt.IterationCount = 1024

' A hash algorithm needs to be set for PBES2:
crypt.HashAlgorithm = "sha256"

' Indicate that the encrypted bytes should be returned
' as a hex string:
crypt.EncodingMode = "hex"

plainText = "To be encrypted."

encryptedText = crypt.EncryptStringENC(plainText)

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

' Now decrypt:
decryptedText = crypt.DecryptStringENC(encryptedText)

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

%>
</body>
</html>