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Examples / Encrypting and decrypting from file to file (VB example)
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    Encrypting and decrypting from file to file (VB example)
    In This Topic

    Here are two examples for VB, one demonstrates encryption from file to file, the other demonstrates decryption from file to file. Both show how to use the Rijndael algorithm.

    Visual Basic - Encryption Copy Code

    ' Encryption example 

    Dim xEnc As New XceedEncryption
    Call xEnc.License( "your license key" ) 

    Dim vaBytesRead As Variant 

    Set xEnc.EncryptionMethod = New XceedRijndaelEncryptionMethod 

    On Error Resume Next

    Call xEnc. EncryptionMethod.SetSecretKeyFromPassPhrase("This is a weak pass phrase!", 128)

    Call xEnc.ProcessFile("c:\temp\source.txt", 0, 0, efpEncrypt, True, "c:\temp\encrypted.aes", False, vaBytesRead) 

    If Err.Number = 0 Then
      Call MsgBox("Encryption successful!") 
    Else
      Call MsgBox(Err.Description) 
    End If

    Visual Basic - Decryption Copy Code

    Dim xEnc As New XceedEncryption

    Call xEnc.License( "your license key" ) 

    Dim vaBytesRead As Variant 

    Set xEnc. EncryptionMethod = New XceedRijndaelEncryptionMethod 

    On Error Resume Next

    Call xEnc. EncryptionMethod.SetSecretKeyFromPassPhrase("This is a weak pass phrase!", 128)

    Call xEnc.ProcessFile("c:\temp\encrypted.aes", 0, 0, efpDecrypt, True, "c:\temp\decrypted.txt", False, vaBytesRead) 

    If Err.Number = 0 Then
      Call MsgBox("Decryption successful!") 
    Else
      Call MsgBox(Err.Description) 
    End If

     

     

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