Visual Basic 6.0

PBES2 Password-Based Encryption

See more Encryption Examples

Demonstrates PBES2 encryption Visual Basic 6.0

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

Dim crypt As New ChilkatCrypt2

' 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"

Dim plainText As String
plainText = "To be encrypted."

Dim encryptedText As String
encryptedText = crypt.EncryptStringENC(plainText)

Debug.Print encryptedText

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

Debug.Print decryptedText