Rijndael String Encryption

Download Chilkat Crypt ActiveX

Visual Basic sample source code demonstrating Rijndael encryption of strings.

Private Sub Command1_Click()

    Dim crypt As New ChilkatCrypt2
    crypt.UnlockComponent "UnlockCode"
    
    ' Use the Rijndael encryption algorithm
    crypt.CryptAlgorithm = "rijndael"
    ' Use 256-bit encryption.
    crypt.KeyLength = 256
    ' Set the password to be "Secret"
    crypt.SecretKey = crypt.GenerateSecretKey("Secret")
    ' Convert Unicode string to iso-8859-1 before encrypting.
    crypt.Charset = "iso-8851-1"
    ' We want the output in string form, so encode it
    ' using hex.  We could also use "base64" here.
    crypt.EncodingMode = "hex"
    
    ' Encrypt...
    Text2.Text = crypt.EncryptStringENC(Text1.Text)
    
    ' Decrypt...
    Text3.Text = crypt.DecryptStringENC(Text2.Text)
    
End Sub