cryptsetup bug

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Sir ,
 

        I am Priyadarshee  Divyashree Kumar from Odisha , India . I am in a serious trouble . My brother is a Judicial Magistrate in the court and he is provided with a HCL laptop from the court with preinstalled customized RHEL5 client . He just asked me to install some player so that he can listen some musics or watch some videos . I just installed VLC,MPLAYER,XINE and MIRO , but while installing I used external repositories from rpmforge, pbone and epel . All gone successfull .


     The laptop has 160 GB harddrive and among which 128 GB are LVM and is LUKS encrypted which is his  home directory containing various legal documents from courts and the cases and a lot . After some hours of ,when I turn on the laptop , it gives an error as

     starting disc encryption , command failed : Error opening device ;no such file or directory ;
and it asks for entering the passphrase again and again 3 times even with providing with correct passwords .

I just googled and try with a live CD , but no result , the result returned a follows :

#cryptsetup -v luksDump /dev/mapper/homevg-homevol
LUKS header information for /dev/mapper/homevg-homevol

Version: 1
Cipher name: aes
Cipher mode: cbc-essiv:sha256
Hash spec: sha1
Payload offset: 1032
MK bits: 128
MK digest: 2a 77 66 d8 24 23 36 b1 c3 91 6d 0d 9d 1e ff 19 3f fe 16 67
MK salt: de 14 b0 ac 51 18 3c c0 97 77 40 31 38 07 fe f4
28 43 06 a9 a2 98 22 6c 67 fc af 71 fd 76 4d f9
MK iterations: 10
UUID: c0be1231-cf29-48ac-8cba-1bf98b180051

Key Slot 0: ENABLED
Iterations: 181173
Salt: f7 4a 8b 83 5f d4 ed e2 7f 42 42 38 eb bc 46 d2
fd b1 7c c5 83 f0 3e 34 83 0f ff 0f 32 95 54 17
Key material offset: 8
AF stripes: 4000
Key Slot 1: DISABLED
Key Slot 2: DISABLED
Key Slot 3: DISABLED
Key Slot 4: DISABLED
Key Slot 5: DISABLED
Key Slot 6: DISABLED
Key Slot 7: DISABLED

And with looksOpen ,

# cryptsetup luksOpen /dev/mapper/homevg-homevol home
Enter LUKS passphrase for /dev/mapper/homevg-homevol:
Enter LUKS passphrase for /dev/mapper/homevg-homevol:
Enter LUKS passphrase for /dev/mapper/homevg-homevol:
Command failed: No key available with this passphrase.


I am trying since last 10-12 hrs wihout a single hope , but as it contains last 5 months of courtwork , I am completely out of mind what to do ,how to do , how to recover the home ?

I dont know if this is a bug or anything , but I have to return his laptop  as it was .


Kindly ,any help will be thankful .

Sincerely..
Priyadarshee Divyashree Kumar
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