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free encryption software


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3 replies to this topic

#1 Geoff777

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Posted 12 October 2010 - 01:12 AM

Hi

Does anyone know of any reliable free encryption software?

Occasionally l have to send paper notes to clients, which is really time consuming, costly and not very secure.
I came up with the idea of downloading notes to a CD and sending this instead.
Now all i have to do is find a away of encrypting the CD and decrypting it the other end.

Anyone have any ideas please?

many thanks

Geoff
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#2 Didier Stevens

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Posted 12 October 2010 - 05:11 AM

Geoff,

I recommend you encrypt the files and not the CD.

Put all your files in a ZIP container and encrypt it with AES (that's an encryption option of your compression utility).
The names of your files will still be visible when someone opens the ZIP file, but the content not. The password is needed to view the content.
So don't put confidential information in the filename.

7-zip is a free compression utility with support for the ZIP format and AES encryption.

The advantage of using the ZIP format is that it is widely used, and that the users of your CD might already have an application that supports encrypted ZIP (like WinZIP).

The remaining problem is key management: how to you get the encryption key securely to your users, and changing keys.

Didier

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#3 ReviverSoft

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Posted 12 October 2010 - 06:42 AM

A simple solution would be to password protect the documents (say a Word doc) and mail the clients their password.

OR

Try using a program like this one.
ReviverSoft - Happy to help!

#4 Geoff777

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Posted 14 October 2010 - 01:01 AM

Hi

Thanks for the responses!

I went for the zip and encrypt option, works absolutely fine, thanks again. :thumbsup:

Geoff
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