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[Bug 1558079] Re: cryptsetup tcryptOpen doesn't work anymore

 

New 3.19 and 3.13 upstream stable kernel should have patches that should
allow old cryptsetup to run again, just backport these patches on top of
accept fixes (instead of revert).

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https://bugs.launchpad.net/bugs/1558079

Title:
  cryptsetup tcryptOpen doesn't work anymore

Status in cryptsetup package in Ubuntu:
  Confirmed
Status in linux package in Ubuntu:
  Invalid

Bug description:
  I'm using cryptsetup to open TrueCrypt encrypted NTFS filesystems:
  cryptsetup tcryptOpen /dev/sdf2 tcrypt

  At least until linux-image-3.13.0-79-generic this work fine. 
  Booting linux-image-3.13.0-83-generic and running cryptsetup results in:

  Required kernel crypto interface not available.
  Ensure you have algif_skcipher kernel module loaded.

  The module algif_skcipher is loaded, so the tenor of the error message
  is wrong, but cryptsetup cannot open the container, so at least there
  _is_ some error. Probably it's related to some unsupported instruction
  set. With  linux-image-3.13.0-83 there are errors in dmesg which are
  not present with linux-image-3.13.0-79:

  AVX instructions are not detected

  System information:

  OS: Ubuntu 14.04.4 LTS
  CPU: Phenom II X6

  TCRYPT header information for /dev/sdf2
  Version:       	5
  Driver req.:	7
  Sector size:	512
  MK offset:	131072
  PBKDF2 hash:	ripemd160
  Cipher chain:	aes
  Cipher mode:	xts-plain64
  MK bits:       	512

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References