How do you decrypt a string in a Microsoft Access VB module that wasencrypted using EncryptDecrypt i

[Mel]

How do you decrypt a string in a Microsoft Access VB module that was
encrypted using EncryptDecrypt.Encrypt() in C# ASP.NET?

It was encrypted in C# as follows: encryptedPassword =
EncryptDecrypt.Encrypt(myPassword);

Now I want to decrypt it in a Microsoft Access module


Regards

Mel

 

[Tom van Stiphout]

On Sat, 6 Sep 2008 09:58:01 -0700 (PDT), Mel <[email protected]>
wrote:

If you really want to do this in VBA you would have to know the
algorithms used, and re-implement them in VBA.
Or use a library from a vendor who has both a VBA and .NET
implementation.
Or set up a web service if that is possible, so VBA can call a Decrypt
method there.

-Tom.
Microsoft Access MVP

 

[Mel]

If you really want to do this in VBA you would have to know the
algorithms used, and re-implement them in VBA.
Or use a library from a vendor who has both a VBA and .NET
implementation.
Or set up a web service if that is possible, so VBA can call a Decrypt
method there.

-Tom.
Microsoft Access MVP

How/where would I find the algorithm?

 

[Tom van Stiphout]

Eh, the documentation for CryptoProvider.Encrypt comes to mind:
<quote>
The digital rights management system uses Advanced Encryption Standard
(AES) block cipher.
</quote>

It's up to you to find more info about this. If you can't, you'll need
to move on to another option.

-Tom.
Microsoft Access MVP

 

[Tony Toews [MVP]]

How/where would I find the algorithm?

Assuming the C#/ASP.Net is using the Microsoft cryption routines then
searching at MSDN for CryptAcquireContext and advapi32.dll should get
you what you need.

Of course you'll need to know what encryption method the code used and
the encryption key.

Tony
--
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