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File encryption for flash drives?


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#1 xXAlphaXx

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Posted 11 December 2010 - 11:08 PM

Is their any encryption programs I can store on my flash drive, that will make certain files inaccessible with out a password.


Of if any one can suggest a program that can function in both a Win and a Mac OSX environment and provides a strong encryption method for some sensitive files.

(Moderator edit: modified and expanded Topic Title. jgw)

Edited by jgweed, 14 December 2010 - 11:27 AM.

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#2 1002 Richard S

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Posted 12 December 2010 - 02:56 AM

Hi I suggest TrueCrypt, cross platform, free and well regarded.

http://www.truecrypt.org/

This from their FAQ: " is there any way ('backdoor') to recover the files from my TrueCrypt volume? TrueCrypt does not allow recovery of any encrypted data without knowing the correct password or key. We cannot recover your data because we do not know and cannot determine the password you chose or the key you generated using TrueCrypt. The only way to recover your files is to try to "crack" the password or the key, but it could take thousands or millions of years (depending on the length and quality of the password or keyfiles, on the software/hardware performance, algorithms, and other factors). If you find this hard to believe, consider the fact that even the FBI was not able to decrypt a TrueCrypt volume after a year of trying."



#3 Didier Stevens

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Posted 12 December 2010 - 04:00 AM

If you can't install TrueCrypt on all the machines on which you want to use your USB stick, use a ZIP container with encryption.

Put all your files to protect 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.

Can't recommend a free ZIP utility for the Mac, not familiar with OSX.

Edited by Didier Stevens, 12 December 2010 - 04:12 AM.

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#4 xXAlphaXx

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Posted 13 December 2010 - 10:26 PM

Thank you guys! I have decided too lock down about 80% of the flash with TrueCrypt and keep an installer for each OS on it.
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#5 1002 Richard S

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Posted 14 December 2010 - 07:23 AM

You're welcome!




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