[BitVisor-devel-en:47] Re: BitVisor-devel-en Digest, Vol 17, Issue 3

[Gordon Parrott]

Thank you very much for the quick  response - certainly food for thought.

I am very impressed with bitvisor so far. 

Gordon Parrott
  

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Today's Topics:

   1. [BitVisor-devel-en:45]  Bitvisor & encrypted windows system.
      (Gordon Parrott)
   2. [BitVisor-devel-en:46] Re: Bitvisor & encrypted windows
      system. (Hideki EIRAKU)


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Message: 1
Date: Thu, 30 May 2013 08:22:28 +0000
From: Gordon Parrott <gparrott at becrypt.com>
Subject: [BitVisor-devel-en:45]  Bitvisor & encrypted windows system.
To: "bitvisor-devel-en at bitvisor.org" <bitvisor-devel-en at bitvisor.org>
Message-ID:
	<3CEEC827264DD744B550E5ABFEDDFFE91AFE1F84 at LDNWINEXCH01.becrypt-hq.local>
	
Content-Type: text/plain; charset="windows-1252"

Hi

I am just beginning some investigations into the use of bitvisor as the basis  security project and I am wondering if anyone can help?

>From a perusal of such documentation as exists in English and the source code available from Source Forge I understand that the real mode bios emulation does not perform encryption/decryption for int 13 disk access: could someone confirm that that is the case?

Also would there be any source code for bitvisor be available that is later than the version of 1.3 on Source Forge?

Thank you in advance for any help.

Gordon Parrott
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Message: 2
Date: Fri, 31 May 2013 09:40:50 +0900
From: Hideki EIRAKU <hdk at igel.co.jp>
Subject: [BitVisor-devel-en:46] Re: Bitvisor & encrypted windows
	system.
To: BitVisor Developers ML <bitvisor-devel-en at bitvisor.org>
Message-ID:
	<CAOg0wgA2bPNzbqCXLceWJ3oswkgjFp2UX3eZkPxCbMwUzQw_xA at mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1

2013/5/30 Gordon Parrott <gparrott at becrypt.com>:
> From a perusal of such documentation as exists in English and the 
> source code available from Source Forge I understand that the real 
> mode bios emulation does not perform encryption/decryption for int 13 disk access:
> could someone confirm that that is the case?

The encryption/decryption for int 13 depends on the BIOS implementation.
Older BIOSes generally perform ATA or AHCI normal I/O in the same way as operating systems.  However, the BIOS in Lenovo ThinkPad X220 uses SMM instead of direct I/O.  BitVisor does int 13 encryption/decryption only if the int 13 performs normal I/O.

> Also would there be any source code for bitvisor be available that is 
> later than the version of 1.3 on Source Forge?

Not yet.

--
Hideki EIRAKU <hdk at igel.co.jp>


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