[Bug 1845218] Re: --hash argument ignored when creating a luks2 volume

[Manfred Hampl]

required change seems to be
https://gitlab.com/cryptsetup/cryptsetup/commit/cdb4816fbbc814a856006b0e9d40ad435019eedf

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Title:
  --hash argument ignored when creating a luks2 volume

Status in cryptsetup package in Ubuntu:
  New

Bug description:
  Command used to create a luks2 volume:
  cryptsetup luksFormat /dev/loop0 --type luks2 --hash sha512
  Output of luksDump shows pbkdf2 is still using sha256
  The problem has been resolved in version 2.2.0 cryptsetup:
  https://gitlab.com/cryptsetup/cryptsetup/issues/484

  [root at mtz ink]# cryptsetup luksDump /dev/loop0
  LUKS header information
  Version:        2
  Epoch:          3
  Metadata area:  12288 bytes
  UUID:           19642715-0c41-4611-9e1f-f5e3c19888b1
  Label:          (no label)
  Subsystem:      (no subsystem)
  Flags:          (no flags)

  Data segments:
    0: crypt
          offset: 4194304 [bytes]
          length: (whole device)
          cipher: aes-xts-plain64
          sector: 512 [bytes]

  Keyslots:
    0: luks2
          Key:        256 bits
          Priority:   normal
          Cipher:     aes-xts-plain64
          PBKDF:      argon2i
          Time cost:  4
          Memory:     872450
          Threads:    4
          Salt:       73 63 6a 10 5a a8 48 a6 f8 5a fa 2b 63 52 8e d0
                      10 64 a1 0f 3a 58 2b c6 59 5a 07 c7 36 77 b5 3c
          AF stripes: 4000
          Area offset:32768 [bytes]
          Area length:131072 [bytes]
          Digest ID:  0
  Tokens:
  Digests:
    0: pbkdf2
          Hash:       sha256
          Iterations: 94705
          Salt:       77 ef 94 fa bb ae 54 b6 59 1e b8 75 c0 c1 c0 f9
                      31 ae 3b 46 95 22 cb 11 0f ac 0a 14 52 22 d3 98
          Digest:     b1 6c 4d 09 d6 b2 92 d9 64 83 37 23 3f e0 5f c0
                      81 73 45 ab 34 7f 7e d3 39 a9 a9 36 4f 0f 54 ec
  [root at mtz ink]#

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