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JJMckay

Member

Registered: 2014-09-24

Posts: 2

[Solved] cryptsetup benchmark: algif_skcipher kernel module not loaded

Hello I'm a relatively new user trying to do a new install of Arch using whole-drive encyption on root and swap where I hope to run ZFS with the encryption. Well I haven't gotten very far for when I run `cryptsetup benchmark` I get a message telling me I haven't loaded the right module for crypto.

root@archiso ~ # cryptsetup benchmark
# Tests are approximate using memory only (no storage IO).
PBKDF2-sha1       436906 iterations per second
PBKDF2-sha256     271089 iterations per second
PBKDF2-sha512     202584 iterations per second
PBKDF2-ripemd160  262144 iterations per second
PBKDF2-whirlpool   88922 iterations per second
Required kernel crypto interface not available.
Ensure you have algif_skcipher kernel module loaded.
cryptsetup benchmark  5.30s user 0.00s system 99% cpu 5.306 total
1 root@archiso ~ #                                                           :(

Checking `lsmod` tells me dm_mod is loaded. Not sure if that includes dm_crypt or not.

root@archiso ~ # lsmod | grep mod
dm_mod                 93484  4 dm_bufio,dm_snapshot
sd_mod                 44356  2
sr_mod                 21903  0
crc_t10dif             12431  1 sd_mod
cdrom                  47479  1 sr_mod
scsi_mod              142915  5 uas,usb_storage,libata,sd_mod,sr_mod

I am trying to use serpent as my cipher if it matters.

1 root@archiso ~ # cryptsetup -c serpent-xts-plain64 -h sha512 -i 2500 --use-random -s 512 luksFormat /dev/sda6

Does nothing, however. Any hints?

Last edited by JJMckay (2014-09-24 18:28:27)

falconindy

Developer

From: New York, USA

Registered: 2009-10-22

Posts: 4,111

Website

Re: [Solved] cryptsetup benchmark: algif_skcipher kernel module not loaded

Does nothing, however. Any hints?

Did you try loading the module?

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frostschutz

Member

Registered: 2013-11-15

Posts: 1,425

Re: [Solved] cryptsetup benchmark: algif_skcipher kernel module not loaded

If you don't intend to use that cipher, you can just as well specify directly what you want.

> cryptsetup benchmark -c aes-xts-plain64 -s 256
# Tests are approximate using memory only (no storage IO).
#  Algorithm | Key |  Encryption |  Decryption
     aes-xts   256b  2614.4 MiB/s  2721.1 MiB/s

> cryptsetup benchmark -c aes-xts-plain64 -s 512
# Tests are approximate using memory only (no storage IO).
#  Algorithm | Key |  Encryption |  Decryption
     aes-xts   512b  1934.3 MiB/s  2048.5 MiB/s

JJMckay

Member

Registered: 2014-09-24

Posts: 2

Re: [Solved] cryptsetup benchmark: algif_skcipher kernel module not loaded

Seems for whatever reason the dm_crypt module wasn't loaded. Upon reboot and making sure it was loaded (with `modprobe dm_mod` and `modprobe dm_crypt`) I was able to benchmark them and encrypt my disk partition.

root@archiso ~ # cryptsetup benchmark
# Tests are approximate using memory only (no storage IO).
PBKDF2-sha1       434733 iterations per second
PBKDF2-sha256     271933 iterations per second
PBKDF2-sha512     200415 iterations per second
PBKDF2-ripemd160  264791 iterations per second
PBKDF2-whirlpool   90269 iterations per second
#  Algorithm | Key |  Encryption |  Decryption
     aes-cbc   128b    87.3 MiB/s   101.5 MiB/s
 serpent-cbc   128b    33.1 MiB/s   123.1 MiB/s
 twofish-cbc   128b    85.3 MiB/s   112.7 MiB/s
     aes-cbc   256b    68.7 MiB/s    77.0 MiB/s
 serpent-cbc   256b    33.1 MiB/s   123.3 MiB/s
 twofish-cbc   256b    85.3 MiB/s   112.6 MiB/s
     aes-xts   256b   101.5 MiB/s   101.9 MiB/s
 serpent-xts   256b   110.5 MiB/s   115.6 MiB/s
 twofish-xts   256b   104.1 MiB/s   105.0 MiB/s
     aes-xts   512b    76.8 MiB/s    76.8 MiB/s
 serpent-xts   512b   110.5 MiB/s   115.5 MiB/s
 twofish-xts   512b   104.1 MiB/s   104.9 MiB/s
cryptsetup benchmark  4.79s user 23.94s system 99% cpu 28.954 total
root@archiso ~ # cryptsetup -c serpent-xts-plain64 -h sha512 -i 2500 --use-random -s 512 luksFormat /dev/sda4

WARNING!
========
This will overwrite data on /dev/sda4 irrevocably.

Are you sure? (Type uppercase yes): YES
Enter passphrase:
Verify passphrase:
root@archiso ~ #

jasonwryan

Anarchist

From: .nz

Registered: 2009-05-09

Posts: 30,424

Website

Re: [Solved] cryptsetup benchmark: algif_skcipher kernel module not loaded

Please remember to mark your thread as [Solved] by editing your first post and prepending it to the title.

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