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How I Compiled TrueCrypt For Windows and Matched the Official Binaries
From: Xavier de Carné de Carnavalet <x_decarn () encs concordia ca>
Date: Sun, 27 Oct 2013 14:51:17 -0400

TrueCrypt is a popular piece of software enabling data protection by means of encryption for all categories of users. It is getting even more attention lately, following the revelations about the NSA, as the authors remain anonymous and no thorough security audit have yet been conducted to prove it is not backdoored in any way. This has led several concerns raised in different places, such as this blog post [1], this one [2], this security analysis [3], also related on that blog post [4] from which IsTrueCryptAuditedYet? [5] was born. One of the recurring questions is: What if the binaries provided on the website were different than the source code and they included hidden features? To address this issue, I built the software for Windows from the official sources in a careful way and was able to match the official binaries. According to my findings, all three recent major versions (v7.1a, v7.0a, v6.3a) exactly match the sources.

Details on how to reproduce the results are mentioned at https://madiba.encs.concordia.ca/~x_decarn/truecrypt-binaries-analysis/

- Does it mean TrueCrypt isn't backdoored in any way and is safe/secure?
- Does it mean a potential backdoor or weakness should only be found in the source code?
Assuming you trust the compiler not to do anything wrong, yes.
- Nobody audited the source code.
True, so you should support IsTrueCryptAuditedYet? for this to happen.

Don't trust me, compile it yourself the way I did. If official binaries get changed in the future, I can't vouch for them. Check authenticity and integrity.

[1] http://www.privacylover.com/encryption/analysis-is-there-a-backdoor-in-truecrypt-is-truecrypt-a-cia-honeypot/
[2] http://brianpuccio.net/excerpts/is_truecrypt_really_safe_to_use
[3] https://www.privacy-cd.org/downloads/truecrypt_7.0a-analysis-en.pdf
[4] http://blog.cryptographyengineering.com/2013/10/lets-audit-truecrypt.html
[5] http://istruecryptauditedyet.com/

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