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# $OpenBSD: krl.sh,v 1.12 2023/01/16 04:11:29 djm Exp $
# Placed in the Public Domain.
tid="key revocation lists"
# Use ed25519 by default since it's fast and it's supported when building
# w/out OpenSSL. Populate ktype[2-4] with the other types if supported.
ktype1=ed25519; ktype2=ed25519; ktype3=ed25519;
ktype4=ed25519; ktype5=ed25519; ktype6=ed25519;
for t in $SSH_KEYTYPES; do
case "$t" in
ecdsa*) ktype2=ecdsa ;;
ssh-rsa) ktype3=rsa ;;
ssh-dss) ktype4=dsa ;;
sk-ssh-ed25519@openssh.com) ktype5=ed25519-sk ;;
sk-ecdsa-sha2-nistp256@openssh.com) ktype6=ecdsa-sk ;;
esac
done
# Do most testing with ssh-keygen; it uses the same verification code as sshd.
# Old keys will interfere with ssh-keygen.
rm -f $OBJ/revoked-* $OBJ/krl-*
# Generate a CA key
$SSHKEYGEN -t $ktype1 -f $OBJ/revoked-ca -C "" -N "" > /dev/null ||
fatal "$SSHKEYGEN CA failed"
$SSHKEYGEN -t $ktype2 -f $OBJ/revoked-ca2 -C "" -N "" > /dev/null ||
fatal "$SSHKEYGEN CA2 failed"
# A specification that revokes some certificates by serial numbers
# The serial pattern is chosen to ensure the KRL includes list, range and
# bitmap sections.
cat << EOF >> $OBJ/revoked-serials
serial: 1-4
serial: 10
serial: 15
serial: 30
serial: 50
serial: 90
serial: 999
# The following sum to 500-799
serial: 500
serial: 501
serial: 502
serial: 503-600
serial: 700-797
serial: 798
serial: 799
serial: 599-701
# Some multiple consecutive serial number ranges
serial: 10000-20000
serial: 30000-40000
EOF
# A specification that revokes some certificated by key ID.
touch $OBJ/revoked-keyid
for n in 1 2 3 4 10 15 30 50 90 `jot 500 300` 999 1000 1001 1002; do
test "x$n" = "x499" && continue
# Fill in by-ID revocation spec.
echo "id: revoked $n" >> $OBJ/revoked-keyid
done
keygen() {
N=$1
f=$OBJ/revoked-`printf "%04d" $N`
# Vary the keytype. We use mostly ed25519 since this is fast and well
# supported.
keytype=$ktype1
case $N in
2 | 10 | 510 | 1001) keytype=$ktype2 ;;
4 | 30 | 520 | 1002) keytype=$ktype3 ;;
8 | 50 | 530 | 1003) keytype=$ktype4 ;;
16 | 70 | 540 | 1004) keytype=$ktype5 ;;
32 | 90 | 550 | 1005) keytype=$ktype6 ;;
esac
$SSHKEYGEN -t $keytype -f $f -C "" -N "" > /dev/null \
|| fatal "$SSHKEYGEN failed"
# Sign cert
$SSHKEYGEN -s $OBJ/revoked-ca -z $n -I "revoked $N" $f >/dev/null 2>&1 \
|| fatal "$SSHKEYGEN sign failed"
echo $f
}
# Generate some keys.
verbose "$tid: generating test keys"
REVOKED_SERIALS="1 4 10 50 90 500 510 520 550 799 999"
for n in $REVOKED_SERIALS ; do
f=`keygen $n`
RKEYS="$RKEYS ${f}.pub"
RCERTS="$RCERTS ${f}-cert.pub"
done
UNREVOKED_SERIALS="5 9 14 16 29 49 51 499 800 1010 1011"
UNREVOKED=""
for n in $UNREVOKED_SERIALS ; do
f=`keygen $n`
UKEYS="$UKEYS ${f}.pub"
UCERTS="$UCERTS ${f}-cert.pub"
done
# Specifications that revoke keys by hash.
touch $OBJ/revoked-sha1 $OBJ/revoked-sha256 $OBJ/revoked-hash
for rkey in $RKEYS; do
(printf "sha1: "; cat $rkey) >> $OBJ/revoked-sha1
(printf "sha256: "; cat $rkey) >> $OBJ/revoked-sha256
(printf "hash: "; $SSHKEYGEN -lf $rkey | \
awk '{ print $2 }') >> $OBJ/revoked-hash
done
genkrls() {
OPTS=$1
$SSHKEYGEN $OPTS -kf $OBJ/krl-empty - </dev/null \
>/dev/null || fatal "$SSHKEYGEN KRL failed"
$SSHKEYGEN $OPTS -kf $OBJ/krl-keys $RKEYS \
>/dev/null || fatal "$SSHKEYGEN KRL failed"
$SSHKEYGEN $OPTS -kf $OBJ/krl-cert $RCERTS \
>/dev/null || fatal "$SSHKEYGEN KRL failed"
$SSHKEYGEN $OPTS -kf $OBJ/krl-all $RKEYS $RCERTS \
>/dev/null || fatal "$SSHKEYGEN KRL failed"
$SSHKEYGEN $OPTS -kf $OBJ/krl-ca $OBJ/revoked-ca.pub \
>/dev/null || fatal "$SSHKEYGEN KRL failed"
$SSHKEYGEN $OPTS -kf $OBJ/krl-sha1 $OBJ/revoked-sha1 \
>/dev/null 2>&1 || fatal "$SSHKEYGEN KRL failed"
$SSHKEYGEN $OPTS -kf $OBJ/krl-sha256 $OBJ/revoked-sha256 \
>/dev/null 2>&1 || fatal "$SSHKEYGEN KRL failed"
$SSHKEYGEN $OPTS -kf $OBJ/krl-hash $OBJ/revoked-hash \
>/dev/null 2>&1 || fatal "$SSHKEYGEN KRL failed"
# This should fail as KRLs from serial/key-id spec need the CA specified.
$SSHKEYGEN $OPTS -kf $OBJ/krl-serial $OBJ/revoked-serials \
>/dev/null 2>&1 && fatal "$SSHKEYGEN KRL succeeded unexpectedly"
$SSHKEYGEN $OPTS -kf $OBJ/krl-keyid $OBJ/revoked-keyid \
>/dev/null 2>&1 && fatal "$SSHKEYGEN KRL succeeded unexpectedly"
# These should succeed; they specify an explicit CA key.
$SSHKEYGEN $OPTS -kf $OBJ/krl-serial -s $OBJ/revoked-ca \
$OBJ/revoked-serials >/dev/null || fatal "$SSHKEYGEN KRL failed"
$SSHKEYGEN $OPTS -kf $OBJ/krl-keyid -s $OBJ/revoked-ca.pub \
$OBJ/revoked-keyid >/dev/null || fatal "$SSHKEYGEN KRL failed"
# These should succeed; they specify an wildcard CA key.
$SSHKEYGEN $OPTS -kf $OBJ/krl-serial-wild -s NONE $OBJ/revoked-serials \
>/dev/null || fatal "$SSHKEYGEN KRL failed"
$SSHKEYGEN $OPTS -kf $OBJ/krl-keyid-wild -s NONE $OBJ/revoked-keyid \
>/dev/null || fatal "$SSHKEYGEN KRL failed"
# Revoke the same serials with the second CA key to ensure a multi-CA
# KRL is generated.
$SSHKEYGEN $OPTS -kf $OBJ/krl-serial -u -s $OBJ/revoked-ca2 \
$OBJ/revoked-serials >/dev/null || fatal "$SSHKEYGEN KRL failed"
}
## XXX dump with trace and grep for set cert serials
## XXX test ranges near (u64)-1, etc.
verbose "$tid: generating KRLs"
genkrls
check_krl() {
KEY=$1
KRL=$2
EXPECT_REVOKED=$3
TAG=$4
$SSHKEYGEN -Qf $KRL $KEY >/dev/null
result=$?
if test "x$EXPECT_REVOKED" = "xy" -a $result -eq 0 ; then
fatal "key $KEY not revoked by KRL $KRL: $TAG"
elif test "x$EXPECT_REVOKED" = "xn" -a $result -ne 0 ; then
fatal "key $KEY unexpectedly revoked by KRL $KRL: $TAG"
fi
}
test_rev() {
FILES=$1
TAG=$2
KEYS_RESULT=$3
ALL_RESULT=$4
HASH_RESULT=$5
SERIAL_RESULT=$6
KEYID_RESULT=$7
CERTS_RESULT=$8
CA_RESULT=$9
SERIAL_WRESULT=${10}
KEYID_WRESULT=${11}
verbose "$tid: checking revocations for $TAG"
for f in $FILES ; do
check_krl $f $OBJ/krl-empty no "$TAG"
check_krl $f $OBJ/krl-keys $KEYS_RESULT "$TAG"
check_krl $f $OBJ/krl-all $ALL_RESULT "$TAG"
check_krl $f $OBJ/krl-sha1 $HASH_RESULT "$TAG"
check_krl $f $OBJ/krl-sha256 $HASH_RESULT "$TAG"
check_krl $f $OBJ/krl-hash $HASH_RESULT "$TAG"
check_krl $f $OBJ/krl-serial $SERIAL_RESULT "$TAG"
check_krl $f $OBJ/krl-keyid $KEYID_RESULT "$TAG"
check_krl $f $OBJ/krl-cert $CERTS_RESULT "$TAG"
check_krl $f $OBJ/krl-ca $CA_RESULT "$TAG"
check_krl $f $OBJ/krl-serial-wild $SERIAL_WRESULT "$TAG"
check_krl $f $OBJ/krl-keyid-wild $KEYID_WRESULT "$TAG"
done
}
test_all() {
# wildcard
# keys all hash sr# ID cert CA srl ID
test_rev "$RKEYS" "revoked keys" y y y n n n n n n
test_rev "$UKEYS" "unrevoked keys" n n n n n n n n n
test_rev "$RCERTS" "revoked certs" y y y y y y y y y
test_rev "$UCERTS" "unrevoked certs" n n n n n n y n n
}
test_all
# Check update. Results should be identical.
verbose "$tid: testing KRL update"
for f in $OBJ/krl-keys $OBJ/krl-cert $OBJ/krl-all \
$OBJ/krl-ca $OBJ/krl-serial $OBJ/krl-keyid \
$OBJ/krl-serial-wild $OBJ/krl-keyid-wild; do
cp -f $OBJ/krl-empty $f
genkrls -u
done
test_all
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