CODEWITHSUNDEEP
c#vb6encryption
dretzlaff17
dretzlaff17

Reputation: 1719

Encrypting and decrypting strings

Does anyone know of a good way to encrypt and decrypt strings using VB6 to ensure sensitive data is secure?

Also, is there an encryption method that can be shared between VB6 and .NET? Example:

The encrypted string will be written to a database using a VB6 application, but the value also need to be read an decrypted in a c# .net application using the .net framework if possible.

Thanks!

Upvotes: 1

Views: 1659

Answers (5)

code4life
code4life

Reputation: 15794

My first thoughts would be to use the built-in CryptoAPI which is built-in to the Microsoft operating systems. This would give you the common-ground effect between your VB6 and C# development platforms.

http://en.wikipedia.org/wiki/Cryptographic_API

Some quick & dirty sample code here: http://www.freevbcode.com/ShowCode.Asp?ID=804

And this is one of the many sites explaining how to do this in C#: Link

Upvotes: 1

Kelly Ethridge
Kelly Ethridge

Reputation: 1678

You could try VBCorLib which supports the same cryptography classes as found in .NET. The crypto classes in VBCorLib provide a nearly identical API as the .NET classes, so the code will be very similar to perform encryption/decryption between the two platforms.

https://sourceforge.net/projects/vbcorlib/

Upvotes: 1

Mark Bowytz
Mark Bowytz

Reputation: 1362

Rather than putting the work of encrypting / decrypting on the application side, perhaps you could handle the security in the database using the Cryptographic Functions of Transact-SQL? After all, both applications would be connecting to the same database.

Upvotes: 3

Karl Strings
Karl Strings

Reputation: 1047

Have you looked at System.Security.Cryptography?

http://msdn.microsoft.com/en-us/library/system.security.cryptography.aspx

I would look at the AesCryptoServiceProvider.

Upvotes: 2

Darin Dimitrov
Darin Dimitrov

Reputation: 1039588

Yeah, symmetric encryption algorithms such as AES are pretty standard so as long as you are using the same keys for encryption and decryption there should be absolutely no problem.

Upvotes: 0

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