iotests: reduce PBKDF iterations when testing LUKS

By default the PBKDF algorithm used with LUKS is tuned
based on the number of iterations to produce 1 second
of running time. This makes running the I/O test with
the LUKS format orders of magnitude slower than with
qcow2/raw formats.

When creating LUKS images, set the iteration time to
a 10ms to reduce the time overhead for LUKS, since
security does not matter in I/O tests.

Previously a full 'check -luks' would take

  $ time ./check -luks
  Passed all 22 tests

  real  23m9.988s
  user  21m46.223s
  sys   0m22.841s

Now it takes

  $ time ./check -luks
  Passed all 22 tests

  real  4m39.235s
  user  3m29.590s
  sys   0m24.234s

Still slow compared to qcow2/raw, but much improved
none the less.

Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-id: 20170626123510.20134-4-berrange@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Daniel P. Berrange 2017-06-26 13:35:08 +01:00 committed by Max Reitz
parent 13a1d4a71b
commit 307d999198
4 changed files with 67 additions and 60 deletions

View File

@ -136,6 +136,7 @@ def cryptsetup_add_password(config, slot):
args = ["luksAddKey", config.image_path(),
"--key-slot", slot,
"--key-file", "-",
"--iter-time", "10",
pwfile]
cryptsetup(args, password)
@ -164,6 +165,7 @@ def cryptsetup_format(config):
args.extend(["--hash", config.hash])
args.extend(["--key-slot", slot])
args.extend(["--key-file", "-"])
args.extend(["--iter-time", "10"])
args.append(config.image_path())
cryptsetup(args, password)
@ -230,6 +232,7 @@ def qemu_img_create(config, size_mb):
opts = [
"key-secret=sec0",
"iter-time=10",
"cipher-alg=%s-%d" % (config.cipher, config.keylen),
"cipher-mode=%s" % config.mode,
"ivgen-alg=%s" % config.ivgen,

View File

@ -2,7 +2,7 @@
# Create image
truncate TEST_DIR/luks-aes-256-xts-plain64-sha1.img --size 4194304MB
# Format image
sudo cryptsetup -q -v luksFormat --cipher aes-xts-plain64 --key-size 512 --hash sha1 --key-slot 0 --key-file - TEST_DIR/luks-aes-256-xts-plain64-sha1.img
sudo cryptsetup -q -v luksFormat --cipher aes-xts-plain64 --key-size 512 --hash sha1 --key-slot 0 --key-file - --iter-time 10 TEST_DIR/luks-aes-256-xts-plain64-sha1.img
# Open dev
sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-256-xts-plain64-sha1.img qiotest-145-aes-256-xts-plain64-sha1
# Set dev owner
@ -60,8 +60,8 @@ unlink TEST_DIR/luks-aes-256-xts-plain64-sha1.img
# ================= qemu-img aes-256-xts-plain64-sha1 =================
# Create image
qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,cipher-alg=aes-256,cipher-mode=xts,ivgen-alg=plain64,hash-alg=sha1 TEST_DIR/luks-aes-256-xts-plain64-sha1.img 4194304M
Formatting 'TEST_DIR/luks-aes-256-xts-plain64-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-256 cipher-mode=xts ivgen-alg=plain64 hash-alg=sha1
qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=aes-256,cipher-mode=xts,ivgen-alg=plain64,hash-alg=sha1 TEST_DIR/luks-aes-256-xts-plain64-sha1.img 4194304M
Formatting 'TEST_DIR/luks-aes-256-xts-plain64-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-256 cipher-mode=xts ivgen-alg=plain64 hash-alg=sha1 iter-time=10
# Open dev
sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-256-xts-plain64-sha1.img qiotest-145-aes-256-xts-plain64-sha1
@ -122,7 +122,7 @@ unlink TEST_DIR/luks-aes-256-xts-plain64-sha1.img
# Create image
truncate TEST_DIR/luks-twofish-256-xts-plain64-sha1.img --size 4194304MB
# Format image
sudo cryptsetup -q -v luksFormat --cipher twofish-xts-plain64 --key-size 512 --hash sha1 --key-slot 0 --key-file - TEST_DIR/luks-twofish-256-xts-plain64-sha1.img
sudo cryptsetup -q -v luksFormat --cipher twofish-xts-plain64 --key-size 512 --hash sha1 --key-slot 0 --key-file - --iter-time 10 TEST_DIR/luks-twofish-256-xts-plain64-sha1.img
# Open dev
sudo cryptsetup -q -v luksOpen TEST_DIR/luks-twofish-256-xts-plain64-sha1.img qiotest-145-twofish-256-xts-plain64-sha1
# Set dev owner
@ -180,8 +180,8 @@ unlink TEST_DIR/luks-twofish-256-xts-plain64-sha1.img
# ================= qemu-img twofish-256-xts-plain64-sha1 =================
# Create image
qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,cipher-alg=twofish-256,cipher-mode=xts,ivgen-alg=plain64,hash-alg=sha1 TEST_DIR/luks-twofish-256-xts-plain64-sha1.img 4194304M
Formatting 'TEST_DIR/luks-twofish-256-xts-plain64-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=twofish-256 cipher-mode=xts ivgen-alg=plain64 hash-alg=sha1
qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=twofish-256,cipher-mode=xts,ivgen-alg=plain64,hash-alg=sha1 TEST_DIR/luks-twofish-256-xts-plain64-sha1.img 4194304M
Formatting 'TEST_DIR/luks-twofish-256-xts-plain64-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=twofish-256 cipher-mode=xts ivgen-alg=plain64 hash-alg=sha1 iter-time=10
# Open dev
sudo cryptsetup -q -v luksOpen TEST_DIR/luks-twofish-256-xts-plain64-sha1.img qiotest-145-twofish-256-xts-plain64-sha1
@ -242,7 +242,7 @@ unlink TEST_DIR/luks-twofish-256-xts-plain64-sha1.img
# Create image
truncate TEST_DIR/luks-serpent-256-xts-plain64-sha1.img --size 4194304MB
# Format image
sudo cryptsetup -q -v luksFormat --cipher serpent-xts-plain64 --key-size 512 --hash sha1 --key-slot 0 --key-file - TEST_DIR/luks-serpent-256-xts-plain64-sha1.img
sudo cryptsetup -q -v luksFormat --cipher serpent-xts-plain64 --key-size 512 --hash sha1 --key-slot 0 --key-file - --iter-time 10 TEST_DIR/luks-serpent-256-xts-plain64-sha1.img
# Open dev
sudo cryptsetup -q -v luksOpen TEST_DIR/luks-serpent-256-xts-plain64-sha1.img qiotest-145-serpent-256-xts-plain64-sha1
# Set dev owner
@ -300,8 +300,8 @@ unlink TEST_DIR/luks-serpent-256-xts-plain64-sha1.img
# ================= qemu-img serpent-256-xts-plain64-sha1 =================
# Create image
qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,cipher-alg=serpent-256,cipher-mode=xts,ivgen-alg=plain64,hash-alg=sha1 TEST_DIR/luks-serpent-256-xts-plain64-sha1.img 4194304M
Formatting 'TEST_DIR/luks-serpent-256-xts-plain64-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=serpent-256 cipher-mode=xts ivgen-alg=plain64 hash-alg=sha1
qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=serpent-256,cipher-mode=xts,ivgen-alg=plain64,hash-alg=sha1 TEST_DIR/luks-serpent-256-xts-plain64-sha1.img 4194304M
Formatting 'TEST_DIR/luks-serpent-256-xts-plain64-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=serpent-256 cipher-mode=xts ivgen-alg=plain64 hash-alg=sha1 iter-time=10
# Open dev
sudo cryptsetup -q -v luksOpen TEST_DIR/luks-serpent-256-xts-plain64-sha1.img qiotest-145-serpent-256-xts-plain64-sha1
@ -362,7 +362,7 @@ unlink TEST_DIR/luks-serpent-256-xts-plain64-sha1.img
# Create image
truncate TEST_DIR/luks-cast5-128-cbc-plain64-sha1.img --size 4194304MB
# Format image
sudo cryptsetup -q -v luksFormat --cipher cast5-cbc-plain64 --key-size 128 --hash sha1 --key-slot 0 --key-file - TEST_DIR/luks-cast5-128-cbc-plain64-sha1.img
sudo cryptsetup -q -v luksFormat --cipher cast5-cbc-plain64 --key-size 128 --hash sha1 --key-slot 0 --key-file - --iter-time 10 TEST_DIR/luks-cast5-128-cbc-plain64-sha1.img
# Open dev
sudo cryptsetup -q -v luksOpen TEST_DIR/luks-cast5-128-cbc-plain64-sha1.img qiotest-145-cast5-128-cbc-plain64-sha1
# Set dev owner
@ -420,8 +420,8 @@ unlink TEST_DIR/luks-cast5-128-cbc-plain64-sha1.img
# ================= qemu-img cast5-128-cbc-plain64-sha1 =================
# Create image
qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,cipher-alg=cast5-128,cipher-mode=cbc,ivgen-alg=plain64,hash-alg=sha1 TEST_DIR/luks-cast5-128-cbc-plain64-sha1.img 4194304M
Formatting 'TEST_DIR/luks-cast5-128-cbc-plain64-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=cast5-128 cipher-mode=cbc ivgen-alg=plain64 hash-alg=sha1
qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=cast5-128,cipher-mode=cbc,ivgen-alg=plain64,hash-alg=sha1 TEST_DIR/luks-cast5-128-cbc-plain64-sha1.img 4194304M
Formatting 'TEST_DIR/luks-cast5-128-cbc-plain64-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=cast5-128 cipher-mode=cbc ivgen-alg=plain64 hash-alg=sha1 iter-time=10
# Open dev
sudo cryptsetup -q -v luksOpen TEST_DIR/luks-cast5-128-cbc-plain64-sha1.img qiotest-145-cast5-128-cbc-plain64-sha1
@ -483,7 +483,7 @@ Skipping cast6-256-xts-plain64-sha1 in blacklist
# Create image
truncate TEST_DIR/luks-aes-256-cbc-plain-sha1.img --size 4194304MB
# Format image
sudo cryptsetup -q -v luksFormat --cipher aes-cbc-plain --key-size 256 --hash sha1 --key-slot 0 --key-file - TEST_DIR/luks-aes-256-cbc-plain-sha1.img
sudo cryptsetup -q -v luksFormat --cipher aes-cbc-plain --key-size 256 --hash sha1 --key-slot 0 --key-file - --iter-time 10 TEST_DIR/luks-aes-256-cbc-plain-sha1.img
# Open dev
sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-256-cbc-plain-sha1.img qiotest-145-aes-256-cbc-plain-sha1
# Set dev owner
@ -541,8 +541,8 @@ unlink TEST_DIR/luks-aes-256-cbc-plain-sha1.img
# ================= qemu-img aes-256-cbc-plain-sha1 =================
# Create image
qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,cipher-alg=aes-256,cipher-mode=cbc,ivgen-alg=plain,hash-alg=sha1 TEST_DIR/luks-aes-256-cbc-plain-sha1.img 4194304M
Formatting 'TEST_DIR/luks-aes-256-cbc-plain-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-256 cipher-mode=cbc ivgen-alg=plain hash-alg=sha1
qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=aes-256,cipher-mode=cbc,ivgen-alg=plain,hash-alg=sha1 TEST_DIR/luks-aes-256-cbc-plain-sha1.img 4194304M
Formatting 'TEST_DIR/luks-aes-256-cbc-plain-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-256 cipher-mode=cbc ivgen-alg=plain hash-alg=sha1 iter-time=10
# Open dev
sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-256-cbc-plain-sha1.img qiotest-145-aes-256-cbc-plain-sha1
@ -603,7 +603,7 @@ unlink TEST_DIR/luks-aes-256-cbc-plain-sha1.img
# Create image
truncate TEST_DIR/luks-aes-256-cbc-plain64-sha1.img --size 4194304MB
# Format image
sudo cryptsetup -q -v luksFormat --cipher aes-cbc-plain64 --key-size 256 --hash sha1 --key-slot 0 --key-file - TEST_DIR/luks-aes-256-cbc-plain64-sha1.img
sudo cryptsetup -q -v luksFormat --cipher aes-cbc-plain64 --key-size 256 --hash sha1 --key-slot 0 --key-file - --iter-time 10 TEST_DIR/luks-aes-256-cbc-plain64-sha1.img
# Open dev
sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-256-cbc-plain64-sha1.img qiotest-145-aes-256-cbc-plain64-sha1
# Set dev owner
@ -661,8 +661,8 @@ unlink TEST_DIR/luks-aes-256-cbc-plain64-sha1.img
# ================= qemu-img aes-256-cbc-plain64-sha1 =================
# Create image
qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,cipher-alg=aes-256,cipher-mode=cbc,ivgen-alg=plain64,hash-alg=sha1 TEST_DIR/luks-aes-256-cbc-plain64-sha1.img 4194304M
Formatting 'TEST_DIR/luks-aes-256-cbc-plain64-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-256 cipher-mode=cbc ivgen-alg=plain64 hash-alg=sha1
qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=aes-256,cipher-mode=cbc,ivgen-alg=plain64,hash-alg=sha1 TEST_DIR/luks-aes-256-cbc-plain64-sha1.img 4194304M
Formatting 'TEST_DIR/luks-aes-256-cbc-plain64-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-256 cipher-mode=cbc ivgen-alg=plain64 hash-alg=sha1 iter-time=10
# Open dev
sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-256-cbc-plain64-sha1.img qiotest-145-aes-256-cbc-plain64-sha1
@ -723,7 +723,7 @@ unlink TEST_DIR/luks-aes-256-cbc-plain64-sha1.img
# Create image
truncate TEST_DIR/luks-aes-256-cbc-essiv-sha256-sha1.img --size 4194304MB
# Format image
sudo cryptsetup -q -v luksFormat --cipher aes-cbc-essiv:sha256 --key-size 256 --hash sha1 --key-slot 0 --key-file - TEST_DIR/luks-aes-256-cbc-essiv-sha256-sha1.img
sudo cryptsetup -q -v luksFormat --cipher aes-cbc-essiv:sha256 --key-size 256 --hash sha1 --key-slot 0 --key-file - --iter-time 10 TEST_DIR/luks-aes-256-cbc-essiv-sha256-sha1.img
# Open dev
sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-256-cbc-essiv-sha256-sha1.img qiotest-145-aes-256-cbc-essiv-sha256-sha1
# Set dev owner
@ -781,8 +781,8 @@ unlink TEST_DIR/luks-aes-256-cbc-essiv-sha256-sha1.img
# ================= qemu-img aes-256-cbc-essiv-sha256-sha1 =================
# Create image
qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,cipher-alg=aes-256,cipher-mode=cbc,ivgen-alg=essiv,hash-alg=sha1,ivgen-hash-alg=sha256 TEST_DIR/luks-aes-256-cbc-essiv-sha256-sha1.img 4194304M
Formatting 'TEST_DIR/luks-aes-256-cbc-essiv-sha256-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-256 cipher-mode=cbc ivgen-alg=essiv ivgen-hash-alg=sha256 hash-alg=sha1
qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=aes-256,cipher-mode=cbc,ivgen-alg=essiv,hash-alg=sha1,ivgen-hash-alg=sha256 TEST_DIR/luks-aes-256-cbc-essiv-sha256-sha1.img 4194304M
Formatting 'TEST_DIR/luks-aes-256-cbc-essiv-sha256-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-256 cipher-mode=cbc ivgen-alg=essiv ivgen-hash-alg=sha256 hash-alg=sha1 iter-time=10
# Open dev
sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-256-cbc-essiv-sha256-sha1.img qiotest-145-aes-256-cbc-essiv-sha256-sha1
@ -843,7 +843,7 @@ unlink TEST_DIR/luks-aes-256-cbc-essiv-sha256-sha1.img
# Create image
truncate TEST_DIR/luks-aes-256-xts-essiv-sha256-sha1.img --size 4194304MB
# Format image
sudo cryptsetup -q -v luksFormat --cipher aes-xts-essiv:sha256 --key-size 512 --hash sha1 --key-slot 0 --key-file - TEST_DIR/luks-aes-256-xts-essiv-sha256-sha1.img
sudo cryptsetup -q -v luksFormat --cipher aes-xts-essiv:sha256 --key-size 512 --hash sha1 --key-slot 0 --key-file - --iter-time 10 TEST_DIR/luks-aes-256-xts-essiv-sha256-sha1.img
# Open dev
sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-256-xts-essiv-sha256-sha1.img qiotest-145-aes-256-xts-essiv-sha256-sha1
# Set dev owner
@ -901,8 +901,8 @@ unlink TEST_DIR/luks-aes-256-xts-essiv-sha256-sha1.img
# ================= qemu-img aes-256-xts-essiv-sha256-sha1 =================
# Create image
qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,cipher-alg=aes-256,cipher-mode=xts,ivgen-alg=essiv,hash-alg=sha1,ivgen-hash-alg=sha256 TEST_DIR/luks-aes-256-xts-essiv-sha256-sha1.img 4194304M
Formatting 'TEST_DIR/luks-aes-256-xts-essiv-sha256-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-256 cipher-mode=xts ivgen-alg=essiv ivgen-hash-alg=sha256 hash-alg=sha1
qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=aes-256,cipher-mode=xts,ivgen-alg=essiv,hash-alg=sha1,ivgen-hash-alg=sha256 TEST_DIR/luks-aes-256-xts-essiv-sha256-sha1.img 4194304M
Formatting 'TEST_DIR/luks-aes-256-xts-essiv-sha256-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-256 cipher-mode=xts ivgen-alg=essiv ivgen-hash-alg=sha256 hash-alg=sha1 iter-time=10
# Open dev
sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-256-xts-essiv-sha256-sha1.img qiotest-145-aes-256-xts-essiv-sha256-sha1
@ -963,7 +963,7 @@ unlink TEST_DIR/luks-aes-256-xts-essiv-sha256-sha1.img
# Create image
truncate TEST_DIR/luks-aes-128-xts-plain64-sha256-sha1.img --size 4194304MB
# Format image
sudo cryptsetup -q -v luksFormat --cipher aes-xts-plain64 --key-size 256 --hash sha1 --key-slot 0 --key-file - TEST_DIR/luks-aes-128-xts-plain64-sha256-sha1.img
sudo cryptsetup -q -v luksFormat --cipher aes-xts-plain64 --key-size 256 --hash sha1 --key-slot 0 --key-file - --iter-time 10 TEST_DIR/luks-aes-128-xts-plain64-sha256-sha1.img
# Open dev
sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-128-xts-plain64-sha256-sha1.img qiotest-145-aes-128-xts-plain64-sha256-sha1
# Set dev owner
@ -1021,8 +1021,8 @@ unlink TEST_DIR/luks-aes-128-xts-plain64-sha256-sha1.img
# ================= qemu-img aes-128-xts-plain64-sha256-sha1 =================
# Create image
qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,cipher-alg=aes-128,cipher-mode=xts,ivgen-alg=plain64,hash-alg=sha1 TEST_DIR/luks-aes-128-xts-plain64-sha256-sha1.img 4194304M
Formatting 'TEST_DIR/luks-aes-128-xts-plain64-sha256-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-128 cipher-mode=xts ivgen-alg=plain64 hash-alg=sha1
qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=aes-128,cipher-mode=xts,ivgen-alg=plain64,hash-alg=sha1 TEST_DIR/luks-aes-128-xts-plain64-sha256-sha1.img 4194304M
Formatting 'TEST_DIR/luks-aes-128-xts-plain64-sha256-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-128 cipher-mode=xts ivgen-alg=plain64 hash-alg=sha1 iter-time=10
# Open dev
sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-128-xts-plain64-sha256-sha1.img qiotest-145-aes-128-xts-plain64-sha256-sha1
@ -1083,7 +1083,7 @@ unlink TEST_DIR/luks-aes-128-xts-plain64-sha256-sha1.img
# Create image
truncate TEST_DIR/luks-aes-192-xts-plain64-sha256-sha1.img --size 4194304MB
# Format image
sudo cryptsetup -q -v luksFormat --cipher aes-xts-plain64 --key-size 384 --hash sha1 --key-slot 0 --key-file - TEST_DIR/luks-aes-192-xts-plain64-sha256-sha1.img
sudo cryptsetup -q -v luksFormat --cipher aes-xts-plain64 --key-size 384 --hash sha1 --key-slot 0 --key-file - --iter-time 10 TEST_DIR/luks-aes-192-xts-plain64-sha256-sha1.img
# Open dev
sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-192-xts-plain64-sha256-sha1.img qiotest-145-aes-192-xts-plain64-sha256-sha1
# Set dev owner
@ -1141,8 +1141,8 @@ unlink TEST_DIR/luks-aes-192-xts-plain64-sha256-sha1.img
# ================= qemu-img aes-192-xts-plain64-sha256-sha1 =================
# Create image
qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,cipher-alg=aes-192,cipher-mode=xts,ivgen-alg=plain64,hash-alg=sha1 TEST_DIR/luks-aes-192-xts-plain64-sha256-sha1.img 4194304M
Formatting 'TEST_DIR/luks-aes-192-xts-plain64-sha256-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-192 cipher-mode=xts ivgen-alg=plain64 hash-alg=sha1
qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=aes-192,cipher-mode=xts,ivgen-alg=plain64,hash-alg=sha1 TEST_DIR/luks-aes-192-xts-plain64-sha256-sha1.img 4194304M
Formatting 'TEST_DIR/luks-aes-192-xts-plain64-sha256-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-192 cipher-mode=xts ivgen-alg=plain64 hash-alg=sha1 iter-time=10
# Open dev
sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-192-xts-plain64-sha256-sha1.img qiotest-145-aes-192-xts-plain64-sha256-sha1
@ -1203,7 +1203,7 @@ unlink TEST_DIR/luks-aes-192-xts-plain64-sha256-sha1.img
# Create image
truncate TEST_DIR/luks-twofish-128-xts-plain64-sha1.img --size 4194304MB
# Format image
sudo cryptsetup -q -v luksFormat --cipher twofish-xts-plain64 --key-size 256 --hash sha1 --key-slot 0 --key-file - TEST_DIR/luks-twofish-128-xts-plain64-sha1.img
sudo cryptsetup -q -v luksFormat --cipher twofish-xts-plain64 --key-size 256 --hash sha1 --key-slot 0 --key-file - --iter-time 10 TEST_DIR/luks-twofish-128-xts-plain64-sha1.img
# Open dev
sudo cryptsetup -q -v luksOpen TEST_DIR/luks-twofish-128-xts-plain64-sha1.img qiotest-145-twofish-128-xts-plain64-sha1
# Set dev owner
@ -1261,8 +1261,8 @@ unlink TEST_DIR/luks-twofish-128-xts-plain64-sha1.img
# ================= qemu-img twofish-128-xts-plain64-sha1 =================
# Create image
qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,cipher-alg=twofish-128,cipher-mode=xts,ivgen-alg=plain64,hash-alg=sha1 TEST_DIR/luks-twofish-128-xts-plain64-sha1.img 4194304M
Formatting 'TEST_DIR/luks-twofish-128-xts-plain64-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=twofish-128 cipher-mode=xts ivgen-alg=plain64 hash-alg=sha1
qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=twofish-128,cipher-mode=xts,ivgen-alg=plain64,hash-alg=sha1 TEST_DIR/luks-twofish-128-xts-plain64-sha1.img 4194304M
Formatting 'TEST_DIR/luks-twofish-128-xts-plain64-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=twofish-128 cipher-mode=xts ivgen-alg=plain64 hash-alg=sha1 iter-time=10
# Open dev
sudo cryptsetup -q -v luksOpen TEST_DIR/luks-twofish-128-xts-plain64-sha1.img qiotest-145-twofish-128-xts-plain64-sha1
@ -1324,7 +1324,7 @@ Skipping twofish-192-xts-plain64-sha1 in blacklist
# Create image
truncate TEST_DIR/luks-serpent-128-xts-plain64-sha1.img --size 4194304MB
# Format image
sudo cryptsetup -q -v luksFormat --cipher serpent-xts-plain64 --key-size 256 --hash sha1 --key-slot 0 --key-file - TEST_DIR/luks-serpent-128-xts-plain64-sha1.img
sudo cryptsetup -q -v luksFormat --cipher serpent-xts-plain64 --key-size 256 --hash sha1 --key-slot 0 --key-file - --iter-time 10 TEST_DIR/luks-serpent-128-xts-plain64-sha1.img
# Open dev
sudo cryptsetup -q -v luksOpen TEST_DIR/luks-serpent-128-xts-plain64-sha1.img qiotest-145-serpent-128-xts-plain64-sha1
# Set dev owner
@ -1382,8 +1382,8 @@ unlink TEST_DIR/luks-serpent-128-xts-plain64-sha1.img
# ================= qemu-img serpent-128-xts-plain64-sha1 =================
# Create image
qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,cipher-alg=serpent-128,cipher-mode=xts,ivgen-alg=plain64,hash-alg=sha1 TEST_DIR/luks-serpent-128-xts-plain64-sha1.img 4194304M
Formatting 'TEST_DIR/luks-serpent-128-xts-plain64-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=serpent-128 cipher-mode=xts ivgen-alg=plain64 hash-alg=sha1
qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=serpent-128,cipher-mode=xts,ivgen-alg=plain64,hash-alg=sha1 TEST_DIR/luks-serpent-128-xts-plain64-sha1.img 4194304M
Formatting 'TEST_DIR/luks-serpent-128-xts-plain64-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=serpent-128 cipher-mode=xts ivgen-alg=plain64 hash-alg=sha1 iter-time=10
# Open dev
sudo cryptsetup -q -v luksOpen TEST_DIR/luks-serpent-128-xts-plain64-sha1.img qiotest-145-serpent-128-xts-plain64-sha1
@ -1444,7 +1444,7 @@ unlink TEST_DIR/luks-serpent-128-xts-plain64-sha1.img
# Create image
truncate TEST_DIR/luks-serpent-192-xts-plain64-sha1.img --size 4194304MB
# Format image
sudo cryptsetup -q -v luksFormat --cipher serpent-xts-plain64 --key-size 384 --hash sha1 --key-slot 0 --key-file - TEST_DIR/luks-serpent-192-xts-plain64-sha1.img
sudo cryptsetup -q -v luksFormat --cipher serpent-xts-plain64 --key-size 384 --hash sha1 --key-slot 0 --key-file - --iter-time 10 TEST_DIR/luks-serpent-192-xts-plain64-sha1.img
# Open dev
sudo cryptsetup -q -v luksOpen TEST_DIR/luks-serpent-192-xts-plain64-sha1.img qiotest-145-serpent-192-xts-plain64-sha1
# Set dev owner
@ -1502,8 +1502,8 @@ unlink TEST_DIR/luks-serpent-192-xts-plain64-sha1.img
# ================= qemu-img serpent-192-xts-plain64-sha1 =================
# Create image
qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,cipher-alg=serpent-192,cipher-mode=xts,ivgen-alg=plain64,hash-alg=sha1 TEST_DIR/luks-serpent-192-xts-plain64-sha1.img 4194304M
Formatting 'TEST_DIR/luks-serpent-192-xts-plain64-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=serpent-192 cipher-mode=xts ivgen-alg=plain64 hash-alg=sha1
qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=serpent-192,cipher-mode=xts,ivgen-alg=plain64,hash-alg=sha1 TEST_DIR/luks-serpent-192-xts-plain64-sha1.img 4194304M
Formatting 'TEST_DIR/luks-serpent-192-xts-plain64-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=serpent-192 cipher-mode=xts ivgen-alg=plain64 hash-alg=sha1 iter-time=10
# Open dev
sudo cryptsetup -q -v luksOpen TEST_DIR/luks-serpent-192-xts-plain64-sha1.img qiotest-145-serpent-192-xts-plain64-sha1
@ -1566,7 +1566,7 @@ Skipping cast6-192-xts-plain64-sha1 in blacklist
# Create image
truncate TEST_DIR/luks-aes-256-xts-plain64-sha256.img --size 4194304MB
# Format image
sudo cryptsetup -q -v luksFormat --cipher aes-xts-plain64 --key-size 512 --hash sha256 --key-slot 0 --key-file - TEST_DIR/luks-aes-256-xts-plain64-sha256.img
sudo cryptsetup -q -v luksFormat --cipher aes-xts-plain64 --key-size 512 --hash sha256 --key-slot 0 --key-file - --iter-time 10 TEST_DIR/luks-aes-256-xts-plain64-sha256.img
# Open dev
sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-256-xts-plain64-sha256.img qiotest-145-aes-256-xts-plain64-sha256
# Set dev owner
@ -1624,8 +1624,8 @@ unlink TEST_DIR/luks-aes-256-xts-plain64-sha256.img
# ================= qemu-img aes-256-xts-plain64-sha256 =================
# Create image
qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,cipher-alg=aes-256,cipher-mode=xts,ivgen-alg=plain64,hash-alg=sha256 TEST_DIR/luks-aes-256-xts-plain64-sha256.img 4194304M
Formatting 'TEST_DIR/luks-aes-256-xts-plain64-sha256.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-256 cipher-mode=xts ivgen-alg=plain64 hash-alg=sha256
qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=aes-256,cipher-mode=xts,ivgen-alg=plain64,hash-alg=sha256 TEST_DIR/luks-aes-256-xts-plain64-sha256.img 4194304M
Formatting 'TEST_DIR/luks-aes-256-xts-plain64-sha256.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-256 cipher-mode=xts ivgen-alg=plain64 hash-alg=sha256 iter-time=10
# Open dev
sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-256-xts-plain64-sha256.img qiotest-145-aes-256-xts-plain64-sha256
@ -1688,7 +1688,7 @@ Skipping aes-256-xts-plain64-ripemd160 in blacklist
# Create image
truncate TEST_DIR/luks-aes-256-xts-plain-sha1-pwslot3.img --size 4194304MB
# Format image
sudo cryptsetup -q -v luksFormat --cipher aes-xts-plain --key-size 512 --hash sha1 --key-slot 3 --key-file - TEST_DIR/luks-aes-256-xts-plain-sha1-pwslot3.img
sudo cryptsetup -q -v luksFormat --cipher aes-xts-plain --key-size 512 --hash sha1 --key-slot 3 --key-file - --iter-time 10 TEST_DIR/luks-aes-256-xts-plain-sha1-pwslot3.img
# Open dev
sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-256-xts-plain-sha1-pwslot3.img qiotest-145-aes-256-xts-plain-sha1-pwslot3
# Set dev owner
@ -1748,21 +1748,21 @@ unlink TEST_DIR/luks-aes-256-xts-plain-sha1-pwslot3.img
# Create image
truncate TEST_DIR/luks-aes-256-xts-plain-sha1-pwallslots.img --size 4194304MB
# Format image
sudo cryptsetup -q -v luksFormat --cipher aes-xts-plain --key-size 512 --hash sha1 --key-slot 0 --key-file - TEST_DIR/luks-aes-256-xts-plain-sha1-pwallslots.img
sudo cryptsetup -q -v luksFormat --cipher aes-xts-plain --key-size 512 --hash sha1 --key-slot 0 --key-file - --iter-time 10 TEST_DIR/luks-aes-256-xts-plain-sha1-pwallslots.img
# Add password slot 1
sudo cryptsetup -q -v luksAddKey TEST_DIR/luks-aes-256-xts-plain-sha1-pwallslots.img --key-slot 1 --key-file - TEST_DIR/passwd.txt
sudo cryptsetup -q -v luksAddKey TEST_DIR/luks-aes-256-xts-plain-sha1-pwallslots.img --key-slot 1 --key-file - --iter-time 10 TEST_DIR/passwd.txt
# Add password slot 2
sudo cryptsetup -q -v luksAddKey TEST_DIR/luks-aes-256-xts-plain-sha1-pwallslots.img --key-slot 2 --key-file - TEST_DIR/passwd.txt
sudo cryptsetup -q -v luksAddKey TEST_DIR/luks-aes-256-xts-plain-sha1-pwallslots.img --key-slot 2 --key-file - --iter-time 10 TEST_DIR/passwd.txt
# Add password slot 3
sudo cryptsetup -q -v luksAddKey TEST_DIR/luks-aes-256-xts-plain-sha1-pwallslots.img --key-slot 3 --key-file - TEST_DIR/passwd.txt
sudo cryptsetup -q -v luksAddKey TEST_DIR/luks-aes-256-xts-plain-sha1-pwallslots.img --key-slot 3 --key-file - --iter-time 10 TEST_DIR/passwd.txt
# Add password slot 4
sudo cryptsetup -q -v luksAddKey TEST_DIR/luks-aes-256-xts-plain-sha1-pwallslots.img --key-slot 4 --key-file - TEST_DIR/passwd.txt
sudo cryptsetup -q -v luksAddKey TEST_DIR/luks-aes-256-xts-plain-sha1-pwallslots.img --key-slot 4 --key-file - --iter-time 10 TEST_DIR/passwd.txt
# Add password slot 5
sudo cryptsetup -q -v luksAddKey TEST_DIR/luks-aes-256-xts-plain-sha1-pwallslots.img --key-slot 5 --key-file - TEST_DIR/passwd.txt
sudo cryptsetup -q -v luksAddKey TEST_DIR/luks-aes-256-xts-plain-sha1-pwallslots.img --key-slot 5 --key-file - --iter-time 10 TEST_DIR/passwd.txt
# Add password slot 6
sudo cryptsetup -q -v luksAddKey TEST_DIR/luks-aes-256-xts-plain-sha1-pwallslots.img --key-slot 6 --key-file - TEST_DIR/passwd.txt
sudo cryptsetup -q -v luksAddKey TEST_DIR/luks-aes-256-xts-plain-sha1-pwallslots.img --key-slot 6 --key-file - --iter-time 10 TEST_DIR/passwd.txt
# Add password slot 7
sudo cryptsetup -q -v luksAddKey TEST_DIR/luks-aes-256-xts-plain-sha1-pwallslots.img --key-slot 7 --key-file - TEST_DIR/passwd.txt
sudo cryptsetup -q -v luksAddKey TEST_DIR/luks-aes-256-xts-plain-sha1-pwallslots.img --key-slot 7 --key-file - --iter-time 10 TEST_DIR/passwd.txt
# Open dev
sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-256-xts-plain-sha1-pwallslots.img qiotest-145-aes-256-xts-plain-sha1-pwallslots
# Set dev owner
@ -1820,8 +1820,8 @@ unlink TEST_DIR/luks-aes-256-xts-plain-sha1-pwallslots.img
# ================= qemu-img aes-256-xts-plain-sha1-pwallslots =================
# Create image
qemu-img create -f luks --object secret,id=sec0,data=c2xvdDE=,format=base64 -o key-secret=sec0,cipher-alg=aes-256,cipher-mode=xts,ivgen-alg=plain,hash-alg=sha1 TEST_DIR/luks-aes-256-xts-plain-sha1-pwallslots.img 4194304M
Formatting 'TEST_DIR/luks-aes-256-xts-plain-sha1-pwallslots.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-256 cipher-mode=xts ivgen-alg=plain hash-alg=sha1
qemu-img create -f luks --object secret,id=sec0,data=c2xvdDE=,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=aes-256,cipher-mode=xts,ivgen-alg=plain,hash-alg=sha1 TEST_DIR/luks-aes-256-xts-plain-sha1-pwallslots.img 4194304M
Formatting 'TEST_DIR/luks-aes-256-xts-plain-sha1-pwallslots.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-256 cipher-mode=xts ivgen-alg=plain hash-alg=sha1 iter-time=10
# Open dev
sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-256-xts-plain-sha1-pwallslots.img qiotest-145-aes-256-xts-plain-sha1-pwallslots
@ -1882,7 +1882,7 @@ unlink TEST_DIR/luks-aes-256-xts-plain-sha1-pwallslots.img
# Create image
truncate TEST_DIR/luks-aes-256-cbc-essiv-auto-sha1.img --size 4194304MB
# Format image
sudo cryptsetup -q -v luksFormat --cipher aes-cbc-essiv:sha256 --key-size 256 --hash sha1 --key-slot 0 --key-file - TEST_DIR/luks-aes-256-cbc-essiv-auto-sha1.img
sudo cryptsetup -q -v luksFormat --cipher aes-cbc-essiv:sha256 --key-size 256 --hash sha1 --key-slot 0 --key-file - --iter-time 10 TEST_DIR/luks-aes-256-cbc-essiv-auto-sha1.img
# Open dev
sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-256-cbc-essiv-auto-sha1.img qiotest-145-aes-256-cbc-essiv-auto-sha1
# Set dev owner
@ -1940,8 +1940,8 @@ unlink TEST_DIR/luks-aes-256-cbc-essiv-auto-sha1.img
# ================= qemu-img aes-256-cbc-essiv-auto-sha1 =================
# Create image
qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,cipher-alg=aes-256,cipher-mode=cbc,ivgen-alg=essiv,hash-alg=sha1 TEST_DIR/luks-aes-256-cbc-essiv-auto-sha1.img 4194304M
Formatting 'TEST_DIR/luks-aes-256-cbc-essiv-auto-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-256 cipher-mode=cbc ivgen-alg=essiv hash-alg=sha1
qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=aes-256,cipher-mode=cbc,ivgen-alg=essiv,hash-alg=sha1 TEST_DIR/luks-aes-256-cbc-essiv-auto-sha1.img 4194304M
Formatting 'TEST_DIR/luks-aes-256-cbc-essiv-auto-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-256 cipher-mode=cbc ivgen-alg=essiv hash-alg=sha1 iter-time=10
# Open dev
sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-256-cbc-essiv-auto-sha1.img qiotest-145-aes-256-cbc-essiv-auto-sha1
@ -2002,7 +2002,7 @@ unlink TEST_DIR/luks-aes-256-cbc-essiv-auto-sha1.img
# Create image
truncate TEST_DIR/luks-aes-256-cbc-plain64-sha256-sha1.img --size 4194304MB
# Format image
sudo cryptsetup -q -v luksFormat --cipher aes-cbc-plain64:sha256 --key-size 256 --hash sha1 --key-slot 0 --key-file - TEST_DIR/luks-aes-256-cbc-plain64-sha256-sha1.img
sudo cryptsetup -q -v luksFormat --cipher aes-cbc-plain64:sha256 --key-size 256 --hash sha1 --key-slot 0 --key-file - --iter-time 10 TEST_DIR/luks-aes-256-cbc-plain64-sha256-sha1.img
# Open dev
sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-256-cbc-plain64-sha256-sha1.img qiotest-145-aes-256-cbc-plain64-sha256-sha1
# Set dev owner
@ -2060,8 +2060,8 @@ unlink TEST_DIR/luks-aes-256-cbc-plain64-sha256-sha1.img
# ================= qemu-img aes-256-cbc-plain64-sha256-sha1 =================
# Create image
qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,cipher-alg=aes-256,cipher-mode=cbc,ivgen-alg=plain64,hash-alg=sha1,ivgen-hash-alg=sha256 TEST_DIR/luks-aes-256-cbc-plain64-sha256-sha1.img 4194304M
Formatting 'TEST_DIR/luks-aes-256-cbc-plain64-sha256-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-256 cipher-mode=cbc ivgen-alg=plain64 ivgen-hash-alg=sha256 hash-alg=sha1
qemu-img create -f luks --object secret,id=sec0,data=MTIzNDU2,format=base64 -o key-secret=sec0,iter-time=10,cipher-alg=aes-256,cipher-mode=cbc,ivgen-alg=plain64,hash-alg=sha1,ivgen-hash-alg=sha256 TEST_DIR/luks-aes-256-cbc-plain64-sha256-sha1.img 4194304M
Formatting 'TEST_DIR/luks-aes-256-cbc-plain64-sha256-sha1.img', fmt=luks size=4398046511104 key-secret=sec0 cipher-alg=aes-256 cipher-mode=cbc ivgen-alg=plain64 ivgen-hash-alg=sha256 hash-alg=sha1 iter-time=10
# Open dev
sudo cryptsetup -q -v luksOpen TEST_DIR/luks-aes-256-cbc-plain64-sha256-sha1.img qiotest-145-aes-256-cbc-plain64-sha256-sha1

View File

@ -126,7 +126,8 @@ _filter_img_create()
-e "s# block_state_zero=\\(on\\|off\\)##g" \
-e "s# log_size=[0-9]\\+##g" \
-e "s# refcount_bits=[0-9]\\+##g" \
-e "s# key-secret=[a-zA-Z0-9]\\+##g"
-e "s# key-secret=[a-zA-Z0-9]\\+##g" \
-e "s# iter-time=[0-9]\\+##g"
}
_filter_img_info()

View File

@ -107,6 +107,9 @@ _set_default_imgopts()
if [ "$IMGFMT" == "qcow2" ] && ! (echo "$IMGOPTS" | grep "compat=" > /dev/null); then
IMGOPTS=$(_optstr_add "$IMGOPTS" "compat=1.1")
fi
if [ "$IMGFMT" == "luks" ] && ! (echo "$IMGOPTS" | grep "iter-time=" > /dev/null); then
IMGOPTS=$(_optstr_add "$IMGOPTS" "iter-time=10")
fi
}
_use_sample_img()