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67 lines
2.3 KiB
Bash
67 lines
2.3 KiB
Bash
# $OpenBSD: multipubkey.sh,v 1.1 2014/12/22 08:06:03 djm Exp $
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# Placed in the Public Domain.
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tid="multiple pubkey"
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rm -f $OBJ/authorized_keys_$USER $OBJ/user_ca_key* $OBJ/user_key*
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rm -f $OBJ/authorized_principals_$USER $OBJ/cert_user_key*
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mv $OBJ/sshd_proxy $OBJ/sshd_proxy.orig
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mv $OBJ/ssh_proxy $OBJ/ssh_proxy.orig
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# Create a CA key
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${SSHKEYGEN} -q -N '' -t ed25519 -f $OBJ/user_ca_key ||\
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fatal "ssh-keygen failed"
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# Make some keys and a certificate.
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${SSHKEYGEN} -q -N '' -t ed25519 -f $OBJ/user_key1 || \
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fatal "ssh-keygen failed"
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${SSHKEYGEN} -q -N '' -t ed25519 -f $OBJ/user_key2 || \
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fatal "ssh-keygen failed"
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${SSHKEYGEN} -q -s $OBJ/user_ca_key -I "regress user key for $USER" \
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-z $$ -n ${USER},mekmitasdigoat $OBJ/user_key1 ||
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fail "couldn't sign user_key1"
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# Copy the private key alongside the cert to allow better control of when
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# it is offered.
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mv $OBJ/user_key1-cert.pub $OBJ/cert_user_key1.pub
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cp -p $OBJ/user_key1 $OBJ/cert_user_key1
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grep -v IdentityFile $OBJ/ssh_proxy.orig > $OBJ/ssh_proxy
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opts="-oProtocol=2 -F $OBJ/ssh_proxy -oIdentitiesOnly=yes"
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opts="$opts -i $OBJ/cert_user_key1 -i $OBJ/user_key1 -i $OBJ/user_key2"
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for privsep in no yes; do
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(
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grep -v "Protocol" $OBJ/sshd_proxy.orig
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echo "Protocol 2"
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echo "UsePrivilegeSeparation $privsep"
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echo "AuthenticationMethods publickey,publickey"
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echo "TrustedUserCAKeys $OBJ/user_ca_key.pub"
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echo "AuthorizedPrincipalsFile $OBJ/authorized_principals_%u"
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) > $OBJ/sshd_proxy
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# Single key should fail.
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rm -f $OBJ/authorized_principals_$USER
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cat $OBJ/user_key1.pub > $OBJ/authorized_keys_$USER
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${SSH} $opts proxy true && fail "ssh succeeded with key"
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# Single key with same-public cert should fail.
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echo mekmitasdigoat > $OBJ/authorized_principals_$USER
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cat $OBJ/user_key1.pub > $OBJ/authorized_keys_$USER
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${SSH} $opts proxy true && fail "ssh succeeded with key+cert"
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# Multiple plain keys should succeed.
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rm -f $OBJ/authorized_principals_$USER
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cat $OBJ/user_key1.pub $OBJ/user_key2.pub > \
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$OBJ/authorized_keys_$USER
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${SSH} $opts proxy true || fail "ssh failed with multiple keys"
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# Cert and different key should succeed
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# Key and different-public cert should succeed.
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echo mekmitasdigoat > $OBJ/authorized_principals_$USER
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cat $OBJ/user_key2.pub > $OBJ/authorized_keys_$USER
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${SSH} $opts proxy true || fail "ssh failed with key/cert"
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done
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