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With password, how to find the passphrase for a full disk encryption after a clone



The 2019 Stack Overflow Developer Survey Results Are In12.04 home encrypted and I have written down encryption passphrase. How to reset login password?Preseed Ubuntu installation with full disk encryptionHow can I use ldap authentication with full disk encryption?Full Disk Encryption Passphrase at Boot: Keyboard not workingFull disk encryption without enabiling LVMHow do I change full disk encryption passwordLUKS full disk encryption - autostartHow to setup a second harddrive with full disk encryptionFull Disk Encryption and Custom Partitioning on Ubuntu 18.04Booting from GRUB after installing Lubuntu with full-disk encryption





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  1. I first installed Xubuntu 18.04 with full disk encryption with the
    default option; I remember the password, but lost the passphrase
    accidently.

  2. I cloned my original disk with clonezilla to a new disk;


Now I want to recover the passphrase for the new disk, and would like to know if it is possible?










share|improve this question









New contributor




sierxue is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
















  • 3





    No! it's not...

    – George Udosen
    12 hours ago






  • 1





    If you know parts or the structure of the passphrase or you have a weak passphrase, you can try JtR with luks2john. If not, the data is lost.

    – RoVo
    12 hours ago








  • 1





    this is why encryption is like playing with fire. people need to stop looking at it like a fun toy. it should be hidden in the ubuntu install options. 99% of end-users don't need it and a lot of new users end up with these sorts of problems.

    – tatsu
    12 hours ago








  • 1





    @tatsu no, encryption is very important to avoid data loss. But people need to start doing backups of important data. Unless you do backups, you WILL loose data - with or without encryption.

    – vidarlo
    12 hours ago











  • fair enough. I just think so many problems arise for new users out of os-level encryption that simply can't happen when you haven't ticked that option durring install. people see that option there and think "oh cool, a neat trick that's completely hands-off and encapsulated" ...it's not hands off. you have to know what you're doing.

    – tatsu
    12 hours ago


















1
















  1. I first installed Xubuntu 18.04 with full disk encryption with the
    default option; I remember the password, but lost the passphrase
    accidently.

  2. I cloned my original disk with clonezilla to a new disk;


Now I want to recover the passphrase for the new disk, and would like to know if it is possible?










share|improve this question









New contributor




sierxue is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
















  • 3





    No! it's not...

    – George Udosen
    12 hours ago






  • 1





    If you know parts or the structure of the passphrase or you have a weak passphrase, you can try JtR with luks2john. If not, the data is lost.

    – RoVo
    12 hours ago








  • 1





    this is why encryption is like playing with fire. people need to stop looking at it like a fun toy. it should be hidden in the ubuntu install options. 99% of end-users don't need it and a lot of new users end up with these sorts of problems.

    – tatsu
    12 hours ago








  • 1





    @tatsu no, encryption is very important to avoid data loss. But people need to start doing backups of important data. Unless you do backups, you WILL loose data - with or without encryption.

    – vidarlo
    12 hours ago











  • fair enough. I just think so many problems arise for new users out of os-level encryption that simply can't happen when you haven't ticked that option durring install. people see that option there and think "oh cool, a neat trick that's completely hands-off and encapsulated" ...it's not hands off. you have to know what you're doing.

    – tatsu
    12 hours ago














1












1








1









  1. I first installed Xubuntu 18.04 with full disk encryption with the
    default option; I remember the password, but lost the passphrase
    accidently.

  2. I cloned my original disk with clonezilla to a new disk;


Now I want to recover the passphrase for the new disk, and would like to know if it is possible?










share|improve this question









New contributor




sierxue is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.













  1. I first installed Xubuntu 18.04 with full disk encryption with the
    default option; I remember the password, but lost the passphrase
    accidently.

  2. I cloned my original disk with clonezilla to a new disk;


Now I want to recover the passphrase for the new disk, and would like to know if it is possible?







xubuntu encryption






share|improve this question









New contributor




sierxue is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











share|improve this question









New contributor




sierxue is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









share|improve this question




share|improve this question








edited 3 mins ago







sierxue













New contributor




sierxue is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









asked 12 hours ago









sierxuesierxue

82




82




New contributor




sierxue is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.





New contributor





sierxue is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.






sierxue is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.








  • 3





    No! it's not...

    – George Udosen
    12 hours ago






  • 1





    If you know parts or the structure of the passphrase or you have a weak passphrase, you can try JtR with luks2john. If not, the data is lost.

    – RoVo
    12 hours ago








  • 1





    this is why encryption is like playing with fire. people need to stop looking at it like a fun toy. it should be hidden in the ubuntu install options. 99% of end-users don't need it and a lot of new users end up with these sorts of problems.

    – tatsu
    12 hours ago








  • 1





    @tatsu no, encryption is very important to avoid data loss. But people need to start doing backups of important data. Unless you do backups, you WILL loose data - with or without encryption.

    – vidarlo
    12 hours ago











  • fair enough. I just think so many problems arise for new users out of os-level encryption that simply can't happen when you haven't ticked that option durring install. people see that option there and think "oh cool, a neat trick that's completely hands-off and encapsulated" ...it's not hands off. you have to know what you're doing.

    – tatsu
    12 hours ago














  • 3





    No! it's not...

    – George Udosen
    12 hours ago






  • 1





    If you know parts or the structure of the passphrase or you have a weak passphrase, you can try JtR with luks2john. If not, the data is lost.

    – RoVo
    12 hours ago








  • 1





    this is why encryption is like playing with fire. people need to stop looking at it like a fun toy. it should be hidden in the ubuntu install options. 99% of end-users don't need it and a lot of new users end up with these sorts of problems.

    – tatsu
    12 hours ago








  • 1





    @tatsu no, encryption is very important to avoid data loss. But people need to start doing backups of important data. Unless you do backups, you WILL loose data - with or without encryption.

    – vidarlo
    12 hours ago











  • fair enough. I just think so many problems arise for new users out of os-level encryption that simply can't happen when you haven't ticked that option durring install. people see that option there and think "oh cool, a neat trick that's completely hands-off and encapsulated" ...it's not hands off. you have to know what you're doing.

    – tatsu
    12 hours ago








3




3





No! it's not...

– George Udosen
12 hours ago





No! it's not...

– George Udosen
12 hours ago




1




1





If you know parts or the structure of the passphrase or you have a weak passphrase, you can try JtR with luks2john. If not, the data is lost.

– RoVo
12 hours ago







If you know parts or the structure of the passphrase or you have a weak passphrase, you can try JtR with luks2john. If not, the data is lost.

– RoVo
12 hours ago






1




1





this is why encryption is like playing with fire. people need to stop looking at it like a fun toy. it should be hidden in the ubuntu install options. 99% of end-users don't need it and a lot of new users end up with these sorts of problems.

– tatsu
12 hours ago







this is why encryption is like playing with fire. people need to stop looking at it like a fun toy. it should be hidden in the ubuntu install options. 99% of end-users don't need it and a lot of new users end up with these sorts of problems.

– tatsu
12 hours ago






1




1





@tatsu no, encryption is very important to avoid data loss. But people need to start doing backups of important data. Unless you do backups, you WILL loose data - with or without encryption.

– vidarlo
12 hours ago





@tatsu no, encryption is very important to avoid data loss. But people need to start doing backups of important data. Unless you do backups, you WILL loose data - with or without encryption.

– vidarlo
12 hours ago













fair enough. I just think so many problems arise for new users out of os-level encryption that simply can't happen when you haven't ticked that option durring install. people see that option there and think "oh cool, a neat trick that's completely hands-off and encapsulated" ...it's not hands off. you have to know what you're doing.

– tatsu
12 hours ago





fair enough. I just think so many problems arise for new users out of os-level encryption that simply can't happen when you haven't ticked that option durring install. people see that option there and think "oh cool, a neat trick that's completely hands-off and encapsulated" ...it's not hands off. you have to know what you're doing.

– tatsu
12 hours ago










1 Answer
1






active

oldest

votes


















2














The canonical answer whether this is possible is: NO, it's not possible.



And this is by design. This situation being easily solvable would defeat the purpose of encrypting itself.



Think of it this way : it isn't much of a safety net, if anyone can circumvent it.



Captain Hindsight would like to add that in the future you should make sure to keep the password and the passphrase in several places if memory cannot be trusted (and it probably shouldn't). Also backups backups backups! Always make backups!






share|improve this answer


























  • Please, use proper formatting of capital letters. BTW, I appreciate your answer.

    – Olimjon
    11 hours ago











  • I know, I noticed your edits right after i finished editing and I added them back in. and thank you.

    – tatsu
    11 hours ago














Your Answer








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1 Answer
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active

oldest

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1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









2














The canonical answer whether this is possible is: NO, it's not possible.



And this is by design. This situation being easily solvable would defeat the purpose of encrypting itself.



Think of it this way : it isn't much of a safety net, if anyone can circumvent it.



Captain Hindsight would like to add that in the future you should make sure to keep the password and the passphrase in several places if memory cannot be trusted (and it probably shouldn't). Also backups backups backups! Always make backups!






share|improve this answer


























  • Please, use proper formatting of capital letters. BTW, I appreciate your answer.

    – Olimjon
    11 hours ago











  • I know, I noticed your edits right after i finished editing and I added them back in. and thank you.

    – tatsu
    11 hours ago


















2














The canonical answer whether this is possible is: NO, it's not possible.



And this is by design. This situation being easily solvable would defeat the purpose of encrypting itself.



Think of it this way : it isn't much of a safety net, if anyone can circumvent it.



Captain Hindsight would like to add that in the future you should make sure to keep the password and the passphrase in several places if memory cannot be trusted (and it probably shouldn't). Also backups backups backups! Always make backups!






share|improve this answer


























  • Please, use proper formatting of capital letters. BTW, I appreciate your answer.

    – Olimjon
    11 hours ago











  • I know, I noticed your edits right after i finished editing and I added them back in. and thank you.

    – tatsu
    11 hours ago
















2












2








2







The canonical answer whether this is possible is: NO, it's not possible.



And this is by design. This situation being easily solvable would defeat the purpose of encrypting itself.



Think of it this way : it isn't much of a safety net, if anyone can circumvent it.



Captain Hindsight would like to add that in the future you should make sure to keep the password and the passphrase in several places if memory cannot be trusted (and it probably shouldn't). Also backups backups backups! Always make backups!






share|improve this answer















The canonical answer whether this is possible is: NO, it's not possible.



And this is by design. This situation being easily solvable would defeat the purpose of encrypting itself.



Think of it this way : it isn't much of a safety net, if anyone can circumvent it.



Captain Hindsight would like to add that in the future you should make sure to keep the password and the passphrase in several places if memory cannot be trusted (and it probably shouldn't). Also backups backups backups! Always make backups!







share|improve this answer














share|improve this answer



share|improve this answer








edited 11 hours ago

























answered 11 hours ago









tatsutatsu

653734




653734













  • Please, use proper formatting of capital letters. BTW, I appreciate your answer.

    – Olimjon
    11 hours ago











  • I know, I noticed your edits right after i finished editing and I added them back in. and thank you.

    – tatsu
    11 hours ago





















  • Please, use proper formatting of capital letters. BTW, I appreciate your answer.

    – Olimjon
    11 hours ago











  • I know, I noticed your edits right after i finished editing and I added them back in. and thank you.

    – tatsu
    11 hours ago



















Please, use proper formatting of capital letters. BTW, I appreciate your answer.

– Olimjon
11 hours ago





Please, use proper formatting of capital letters. BTW, I appreciate your answer.

– Olimjon
11 hours ago













I know, I noticed your edits right after i finished editing and I added them back in. and thank you.

– tatsu
11 hours ago







I know, I noticed your edits right after i finished editing and I added them back in. and thank you.

– tatsu
11 hours ago












sierxue is a new contributor. Be nice, and check out our Code of Conduct.










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