mirror of
https://gitlab.com/cryptsetup/cryptsetup.git
synced 2025-12-11 19:00:02 +01:00
Add kernel key compat tests.
This test can detect ugly dm-crypt kernel key bug present in kernels 4.10.0 through 4.15.0-rc8.
This commit is contained in:
Ondrej Kozina
committed by
Milan Broz
Milan Broz
parent
5143b210cf
commit
865b1dc66e
@@ -11,6 +11,7 @@ TESTS = api-test \
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luks1-compat-test \
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device-test \
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keyring-test \
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keyring-compat-test \
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luks2-validation-test \
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luks2-integrity-test
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@@ -55,6 +56,7 @@ EXTRA_DIST = compatimage.img.bz2 compatv10image.img.bz2 \
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luks2-integrity-test \
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device-test \
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keyring-test \
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keyring-compat-test \
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integrity-compat-test \
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cryptsetup-valg-supps valg.sh valg-api.sh
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183
tests/keyring-compat-test
Executable file
183
tests/keyring-compat-test
Executable file
@@ -0,0 +1,183 @@
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#!/bin/bash
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CIPHER_XTS_PLAIN="aes-xts-plain64"
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CIPHER_CBC_ESSIV="aes-cbc-essiv:sha256"
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CIPHER_CBC_TCW="serpent-cbc-tcw"
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# TODO: mode with LMK
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TEST_KEYRING_NAME="keyringtest_keyring"
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LOGON_KEY_16_OK="dmtst:lkey_16"
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LOGON_KEY_32_OK="dmtst:lkey_32"
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LOGON_KEY_64_OK="dmtst:lkey_64"
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HEXKEY_16="be21aa8c733229347bd4e681891e213d";
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HEXKEY_32="bb21158c733229347bd4e681891e213d94c685be6a5b84818afe7a78a6de7a1a";
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HEXKEY_64="34f95b96abff946b64f1339ff8653cc77c38697c93b797a496f3786e86eed7781850d5112bbae17d209b8310a8f3a034f1cd297667bc0cd1438fad28d87ef6a1"
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DEVSIZEMB=16
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DEVSECTORS=$((DEVSIZEMB*1024*1024/512))
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NAME=testcryptdev
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CHKS_DMCRYPT=vk_in_dmcrypt.chk
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CHKS_KEYRING=vk_in_keyring.chk
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function remove_mapping()
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{
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[ -b /dev/mapper/$NAME ] && dmsetup remove $NAME
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# unlink whole test keyring
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[ -n "$TEST_KEYRING" ] && keyctl unlink $TEST_KEYRING "@u" >/dev/null
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rmmod scsi_debug 2>/dev/null
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rm -f $CHKS_DMCRYPT $CHKS_KEYRING
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}
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function skip()
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{
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[ -n "$1" ] && echo "$1"
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remove_mapping
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exit 77
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}
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function fail()
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{
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[ -n "$1" ] && echo "$1"
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echo "FAILED at $(caller)"
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remove_mapping
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exit 2
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}
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# $1 hexbyte key
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# $2 type
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# $3 description
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# $4 keyring
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function load_key()
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{
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local tmp="$1"
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shift
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echo -n "$tmp" | xxd -r -p | keyctl padd $@ >/dev/null
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}
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function dm_crypt_keyring_support()
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{
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VER_STR=$(dmsetup targets | grep crypt | cut -f2 -dv)
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[ -z "$VER_STR" ] && fail "Failed to parse dm-crypt version."
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VER_MAJ=$(echo $VER_STR | cut -f 1 -d.)
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VER_MIN=$(echo $VER_STR | cut -f 2 -d.)
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[ $VER_MAJ -gt 1 ] && return 0
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[ $VER_MAJ -lt 1 ] && return 1
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[ $VER_MIN -ge 15 ]
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}
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function test_and_prepare_keyring() {
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keyctl list "@s" > /dev/null || skip "Current session keyring is unreachable, test skipped"
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TEST_KEYRING=$(keyctl newring $TEST_KEYRING_NAME "@u" 2> /dev/null)
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test -n "$TEST_KEYRING" || skip "Failed to create keyring in user keyring"
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keyctl search "@s" keyring "$TEST_KEYRING" > /dev/null 2>&1 || keyctl link "@u" "@s" > /dev/null 2>&1
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load_key "$HEXKEY_16" user test_key "$TEST_KEYRING" || skip "Kernel keyring service is useless on this system, test skipped."
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}
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add_device() {
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modprobe scsi_debug $@
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if [ $? -ne 0 ] ; then
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echo "This kernel seems to not support proper scsi_debug module, test skipped."
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exit 77
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fi
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sleep 2
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DEV=$(grep -l -e scsi_debug /sys/block/*/device/model | cut -f4 -d /)
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DEV="/dev/$DEV"
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[ -b $DEV ] || fail "Cannot find $DEV."
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}
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[ $(id -u) != 0 ] && skip "WARNING: You must be root to run this test, test skipped."
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which dmsetup >/dev/null 2>&1 || skip "Cannot find dmsetup, test skipped"
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which keyctl >/dev/null 2>&1 || skip "Cannot find keyctl, test skipped"
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which xxd >/dev/null 2>&1 || skip "Cannot find xxd, test skipped"
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which sha1sum > /dev/null 2>&1 || skip "Cannot find sha1sum, test skipped"
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modprobe dm-crypt || fail "dm-crypt failed to load"
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dm_crypt_keyring_support || skip "dm-crypt doesn't support kernel keyring, test skipped."
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test_and_prepare_keyring
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add_device dev_size_mb=$DEVSIZEMB
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dd if=/dev/urandom of=$DEV bs=1M count=$DEVSIZEMB oflag=direct > /dev/null 2>&1 || fail
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#test aes cipher with xts mode, plain IV
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echo -n "Testing $CIPHER_XTS_PLAIN..."
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dmsetup create $NAME --table "0 $DEVSECTORS crypt $CIPHER_XTS_PLAIN $HEXKEY_32 0 $DEV 0" || fail
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sha1sum /dev/mapper/$NAME > $CHKS_DMCRYPT || fail
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dmsetup remove $NAME || fail
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load_key "$HEXKEY_32" logon $LOGON_KEY_32_OK "$TEST_KEYRING" || fail "Cannot load 32 byte logon key type"
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dmsetup create $NAME --table "0 $DEVSECTORS crypt $CIPHER_XTS_PLAIN :32:logon:$LOGON_KEY_32_OK 0 $DEV 0" || fail
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sha1sum /dev/mapper/$NAME > $CHKS_KEYRING || fail
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dmsetup remove $NAME || fail
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diff $CHKS_DMCRYPT $CHKS_KEYRING || fail "Plaintext checksums mismatch (corruption)"
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# same test using message
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dmsetup create $NAME --table "0 $DEVSECTORS crypt $CIPHER_XTS_PLAIN $HEXKEY_32 0 $DEV 0" || fail
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sha1sum /dev/mapper/$NAME > $CHKS_DMCRYPT || fail
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dmsetup remove $NAME || fail
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dmsetup create $NAME --table "0 $DEVSECTORS crypt $CIPHER_XTS_PLAIN $HEXKEY_32 0 $DEV 0" || fail
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dmsetup suspend $NAME || fail
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dmsetup message $NAME 0 key wipe || fail
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dmsetup message $NAME 0 "key set :32:logon:$LOGON_KEY_32_OK" || fail
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dmsetup resume $NAME || fail
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sha1sum /dev/mapper/$NAME > $CHKS_KEYRING || fail
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dmsetup remove $NAME || fail
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diff $CHKS_DMCRYPT $CHKS_KEYRING || fail "Plaintext checksums mismatch (corruption)"
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echo "OK"
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#test aes cipher, xts mode, essiv IV
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echo -n "Testing $CIPHER_CBC_ESSIV..."
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dmsetup create $NAME --table "0 $DEVSECTORS crypt $CIPHER_CBC_ESSIV $HEXKEY_16 0 $DEV 0" || fail
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sha1sum /dev/mapper/$NAME > $CHKS_DMCRYPT || fail
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dmsetup remove $NAME || fail
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load_key "$HEXKEY_16" logon $LOGON_KEY_16_OK "$TEST_KEYRING" || fail "Cannot load 16 byte logon key type"
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dmsetup create $NAME --table "0 $DEVSECTORS crypt $CIPHER_CBC_ESSIV :16:logon:$LOGON_KEY_16_OK 0 $DEV 0" || fail
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sha1sum /dev/mapper/$NAME > $CHKS_KEYRING || fail
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dmsetup remove $NAME || fail
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diff $CHKS_DMCRYPT $CHKS_KEYRING || fail "Plaintext checksums mismatch (corruption)"
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# same test using message
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dmsetup create $NAME --table "0 $DEVSECTORS crypt $CIPHER_CBC_ESSIV $HEXKEY_16 0 $DEV 0" || fail
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sha1sum /dev/mapper/$NAME > $CHKS_DMCRYPT || fail
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dmsetup remove $NAME || fail
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dmsetup create $NAME --table "0 $DEVSECTORS crypt $CIPHER_CBC_ESSIV $HEXKEY_16 0 $DEV 0" || fail
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dmsetup suspend $NAME || fail
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dmsetup message $NAME 0 key wipe || fail
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dmsetup message $NAME 0 "key set :16:logon:$LOGON_KEY_16_OK" || fail
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dmsetup resume $NAME || fail
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sha1sum /dev/mapper/$NAME > $CHKS_KEYRING || fail
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dmsetup remove $NAME || fail
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diff $CHKS_DMCRYPT $CHKS_KEYRING || fail "Plaintext checksums mismatch (corruption)"
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echo "OK"
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#test serpent cipher, cbc mode, tcw IV
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echo -n "Testing $CIPHER_CBC_TCW..."
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dmsetup create $NAME --table "0 $DEVSECTORS crypt $CIPHER_CBC_TCW $HEXKEY_64 0 $DEV 0" || fail
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sha1sum /dev/mapper/$NAME > $CHKS_DMCRYPT || fail
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dmsetup remove $NAME || fail
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load_key "$HEXKEY_64" logon $LOGON_KEY_64_OK "$TEST_KEYRING" || fail "Cannot load 16 byte logon key type"
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dmsetup create $NAME --table "0 $DEVSECTORS crypt $CIPHER_CBC_TCW :64:logon:$LOGON_KEY_64_OK 0 $DEV 0" || fail
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sha1sum /dev/mapper/$NAME > $CHKS_KEYRING || fail
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dmsetup remove $NAME || fail
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diff $CHKS_DMCRYPT $CHKS_KEYRING || fail "Plaintext checksum mismatch (corruption)"
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# same test using message
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dmsetup create $NAME --table "0 $DEVSECTORS crypt $CIPHER_CBC_TCW $HEXKEY_64 0 $DEV 0" || fail
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sha1sum /dev/mapper/$NAME > $CHKS_DMCRYPT || fail
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dmsetup remove $NAME || fail
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dmsetup create $NAME --table "0 $DEVSECTORS crypt $CIPHER_CBC_TCW $HEXKEY_64 0 $DEV 0" || fail
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dmsetup suspend $NAME || fail
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dmsetup message $NAME 0 key wipe || fail
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dmsetup message $NAME 0 "key set :64:logon:$LOGON_KEY_64_OK" || fail
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dmsetup resume $NAME || fail
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sha1sum /dev/mapper/$NAME > $CHKS_KEYRING || fail
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dmsetup remove $NAME || fail
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diff $CHKS_DMCRYPT $CHKS_KEYRING || fail "Plaintext checksums mismatch (corruption)"
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echo "OK"
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remove_mapping
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