[Bug 1755959] Re: Encrypted startup disk converted to LUKS2 format says wrong password

[Steve Langasek]

*** This bug is a duplicate of bug 1755322 ***
    https://bugs.launchpad.net/bugs/1755322

** Changed in: cryptsetup (Ubuntu)
   Importance: Undecided => High

** Changed in: cryptsetup (Ubuntu)
       Status: Confirmed => Triaged

** This bug has been marked a duplicate of bug 1755322
   logging in with luks2 converted encrypted disk only accepts keylsot #1 password

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https://bugs.launchpad.net/bugs/1755959

Title:
  Encrypted startup disk converted to LUKS2 format says wrong password

Status in cryptsetup package in Ubuntu:
  Triaged

Bug description:
  Converting encrypted startup disk from LUKS1-> LUKS2 format - the original passphase works but adding / changing keyslots/passphrase after conversion never work and get "wrong pass" message at startup.  
  External, non-startup disks work fine with LUKS2 Argon2 hashes.

  Reconverting back to LUKS1 format I can again change / add
  keyslots/passphrase successful at startup.

  Submitted as a Cryptsetup bug but parameters of luksDump looked
  correct they said.

  
  1. Description:	Ubuntu Bionic Beaver (development branch)
  Release:	18.04

  2. cryptsetup:
    Installed: 2:2.0.1-0ubuntu2
    Candidate: 2:2.0.1-0ubuntu2
    Version table:
   *** 2:2.0.1-0ubuntu2 500
          500 http://us.archive.ubuntu.com/ubuntu bionic/main amd64 Packages
          100 /var/lib/dpkg/status

  3. Converted LUKS2 format startup Ubuntu drive should be able to add /
  change keys.

  4. All changed/added passphases get password error at startup.

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