Provide a script to generate test certificates/keys.

This will allow us to generate a variety of client and server certificates,
including expired and revoked certificates, using both RSA and ECDSA.

Discussed with tb@

diff --git a/regress/lib/libssl/certs/make-certs.sh b/regress/lib/libssl/certs/make-certs.sh
new file mode 100755 (executable)
index 0000000..c90b7c8
--- /dev/null
+++ b/regress/lib/libssl/certs/make-certs.sh
@@ -0,0 +1,263 @@
+#!/bin/ksh
+
+#
+# Copyright (c) 2020, 2021 Joel Sing <jsing@openbsd.org>
+#
+# Permission to use, copy, modify, and distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+# 
+
+set -e
+set -u
+set -x
+
+readonly SUBJECT="/CN=LibreSSL Test"
+
+readonly TMPDIR=$(mktemp -d)
+
+cleanup() {
+        rm -rf "${TMPDIR}"
+}
+
+trap cleanup EXIT INT
+
+reset() {
+       echo '100001' > ${TMPDIR}/certserial
+       cat /dev/null > ${TMPDIR}/certindex
+}
+
+setup() {
+       reset
+
+       cat > ${TMPDIR}/openssl.cnf <<EOF
+[ca]
+default_ca = test_ca
+
+[test_ca]
+new_certs_dir = ${TMPDIR}/
+database = ${TMPDIR}/certindex
+default_days = 365
+default_md = sha256
+policy = test_policy
+serial = ${TMPDIR}/certserial
+
+[test_policy]
+countryName             = optional
+stateOrProvinceName     = optional
+localityName            = optional
+organizationName        = optional
+organizationalUnitName  = optional
+commonName              = supplied
+emailAddress            = optional
+
+[v3_ca_root]
+subjectKeyIdentifier = hash
+authorityKeyIdentifier = keyid:always,issuer
+basicConstraints = critical, CA:true
+keyUsage = critical, cRLSign, keyCertSign
+
+[v3_ca_int]
+subjectKeyIdentifier = hash
+authorityKeyIdentifier = keyid:always,issuer
+basicConstraints = critical, CA:true
+keyUsage = critical, cRLSign, keyCertSign
+
+[v3_other]
+subjectKeyIdentifier = hash
+authorityKeyIdentifier = keyid:always,issuer
+basicConstraints = critical, CA:false
+keyUsage = critical, digitalSignature
+
+[req]
+distinguished_name      = req_distinguished_name
+
+[ req_distinguished_name ]
+EOF
+}
+
+key_type_to_args() {
+       local key_type=$1
+
+       alg=${key_type%:*}
+       param=${key_type#*:}
+
+       if [[ "${alg}" == "rsa" ]]; then
+               echo "-newkey ${key_type}";
+       elif [[ "${alg}" == "ec" ]]; then
+               echo "-newkey $alg -pkeyopt ec_paramgen_curve:${param}"
+       else
+               echo "Unknown key type ${key_type}" >&2
+               exit 1
+       fi
+}
+
+create_root() {
+       local name=$1 file=$2 key_type=$3
+
+       key_args=$(key_type_to_args "${key_type}")
+
+       openssl req -new -days 3650 -nodes ${key_args} -sha256 -x509 \
+           -subj "${SUBJECT} ${name}" -keyout "${TMPDIR}/${file}.key" \
+           -config ${TMPDIR}/openssl.cnf -extensions v3_ca_root \
+           -out "${TMPDIR}/${file}.crt"
+}
+
+create_intermediate() {
+       local name=$1 file=$2 issuer_file=$3 key_type=$4
+
+       key_args=$(key_type_to_args "${key_type}")
+
+       openssl req -new -days 3650 -nodes ${key_args} -sha256 \
+           -subj "${SUBJECT} ${name}" -keyout "${TMPDIR}/${file}.key" \
+           -out "${TMPDIR}/${file}.csr"
+       openssl x509 -req -days 3650 -CA "${TMPDIR}/${issuer_file}.crt" \
+           -CAkey "${TMPDIR}/${issuer_file}.key" -CAcreateserial \
+           -extfile ${TMPDIR}/openssl.cnf -extensions v3_ca_int \
+           -in "${TMPDIR}/${file}.csr" -out "${TMPDIR}/${file}.crt"
+}
+
+create_leaf() {
+       local name=$1 file=$2 issuer_file=$3 key_type=$4
+
+       key_args=$(key_type_to_args "${key_type}")
+
+       openssl req -new -days 3650 -nodes ${key_args} -sha256 \
+           -subj "${SUBJECT} ${name}" -keyout "${TMPDIR}/${file}.key" \
+           -out "${TMPDIR}/${file}.csr"
+       openssl x509 -req -days 3650 -CA "${TMPDIR}/${issuer_file}.crt" \
+           -CAkey "${TMPDIR}/${issuer_file}.key" -CAcreateserial -sha256 \
+           -extfile ${TMPDIR}/openssl.cnf -extensions v3_other \
+           -in "${TMPDIR}/${file}.csr" -out "${TMPDIR}/${file}.crt"
+}
+
+create_expired_leaf() {
+       local name=$1 file=$2 issuer_file=$3 key_type=$4
+
+       key_args=$(key_type_to_args "${key_type}")
+
+       openssl req -new -days 3650 -nodes ${key_args} -sha256 \
+           -subj "${SUBJECT} ${name}" -keyout "${TMPDIR}/${file}.key" \
+           -out "${TMPDIR}/${file}.csr"
+       openssl ca -batch -notext -cert "${TMPDIR}/${issuer_file}.crt" \
+           -keyfile "${TMPDIR}/${issuer_file}.key" \
+           -config ${TMPDIR}/openssl.cnf -extensions v3_other \
+           -startdate 20100101000000Z -enddate 20200101000000Z \
+           -in "${TMPDIR}/${file}.csr" -out "${TMPDIR}/${file}.crt"
+}
+
+create_revoked_leaf() {
+       local name=$1 file=$2 issuer_file=$3 key_type=$4
+
+       key_args=$(key_type_to_args "${key_type}")
+
+       openssl req -new -days 3650 -nodes ${key_args} -sha256 \
+           -subj "${SUBJECT} ${name}" -keyout "${TMPDIR}/${file}.key" \
+           -out "${TMPDIR}/${file}.csr"
+       openssl x509 -req -days 3650 -CA "${TMPDIR}/${issuer_file}.crt" \
+           -CAkey "${TMPDIR}/${issuer_file}.key" -CAcreateserial \
+           -extfile ${TMPDIR}/openssl.cnf -extensions v3_other \
+           -in "${TMPDIR}/${file}.csr" -out "${TMPDIR}/${file}.crt"
+       openssl ca -cert "${TMPDIR}/${issuer_file}.crt" \
+           -keyfile "${TMPDIR}/${issuer_file}.key" \
+           -config "${TMPDIR}/openssl.cnf" -extensions v3_other \
+           -revoke "${TMPDIR}/${file}.crt"
+       openssl ca -gencrl -cert "${TMPDIR}/${issuer_file}.crt" \
+           -keyfile "${TMPDIR}/${issuer_file}.key" \
+           -config "${TMPDIR}/openssl.cnf" -extensions v3_other \
+           -crldays 30 -out "${TMPDIR}/${issuer_file}.crl"
+}
+
+create_bundle() {
+       local bundle_file=$1
+       shift
+
+       mkdir -p $(dirname ${bundle_file})
+       cat /dev/null > ${bundle_file}
+
+       for _cert_file in $@; do
+               openssl x509 -nameopt oneline -subject -issuer \
+                   -in "${TMPDIR}/${_cert_file}.crt" >> ${bundle_file}
+       done
+}
+
+create_bundle_with_key() {
+       local bundle_file=$1
+       shift
+
+       mkdir -p $(dirname ${bundle_file})
+       cat /dev/null > ${bundle_file}
+
+       for _cert_file in $@; do
+               openssl x509 -nameopt oneline -subject -issuer -noout \
+                   -in "${TMPDIR}/${_cert_file}.crt" >> ${bundle_file}
+       done
+       for _cert_file in $@; do
+               cat "${TMPDIR}/${_cert_file}.crt" >> ${bundle_file}
+       done
+       for _key_file in $@; do
+               cat "${TMPDIR}/${_key_file}.key" >> ${bundle_file}
+       done
+}
+
+setup
+
+reset
+create_root "Root CA RSA" "ca-root-rsa" "rsa:2048"
+create_intermediate "Intermediate CA RSA" "ca-int-rsa" "ca-root-rsa" "rsa:2048"
+create_leaf "Server 1 RSA" "server-1-rsa" "ca-int-rsa" "rsa:2048"
+create_expired_leaf "Server 2 RSA" "server-2-rsa" "ca-int-rsa" "rsa:2048"
+create_revoked_leaf "Server 3 RSA" "server-3-rsa" "ca-int-rsa" "rsa:2048"
+create_leaf "Client 1 RSA" "client-1-rsa" "ca-int-rsa" "rsa:2048"
+create_expired_leaf "Client 2 RSA" "client-2-rsa" "ca-int-rsa" "rsa:2048"
+create_revoked_leaf "Client 3 RSA" "client-3-rsa" "ca-int-rsa" "rsa:2048"
+
+create_bundle "./ca-root-rsa.pem" "ca-root-rsa"
+create_bundle "./ca-int-rsa.pem" "ca-int-rsa"
+cp "${TMPDIR}/ca-int-rsa.crl" "./ca-int-rsa.crl"
+create_bundle_with_key "./server1-rsa.pem" "server-1-rsa"
+create_bundle "./server1-rsa-chain.pem" "server-1-rsa" "ca-int-rsa"
+create_bundle_with_key "./server2-rsa.pem" "server-2-rsa"
+create_bundle "./server2-rsa-chain.pem" "server-2-rsa" "ca-int-rsa"
+create_bundle_with_key "./server3-rsa.pem" "server-3-rsa"
+create_bundle "./server3-rsa-chain.pem" "server-3-rsa" "ca-int-rsa"
+create_bundle_with_key "./client1-rsa.pem" "client-1-rsa"
+create_bundle "./client1-rsa-chain.pem" "client-1-rsa" "ca-int-rsa"
+create_bundle_with_key "./client2-rsa.pem" "client-2-rsa"
+create_bundle "./client2-rsa-chain.pem" "client-2-rsa" "ca-int-rsa"
+create_bundle_with_key "./client3-rsa.pem" "client-3-rsa"
+create_bundle "./client3-rsa-chain.pem" "client-3-rsa" "ca-int-rsa"
+
+reset
+create_root "Root CA ECDSA" "ca-root-ecdsa" "ec:prime256v1"
+create_intermediate "Intermediate CA ECDSA" "ca-int-ecdsa" "ca-root-ecdsa" "ec:prime256v1"
+create_leaf "Server 1 ECDSA" "server-1-ecdsa" "ca-int-ecdsa" "ec:prime256v1"
+create_expired_leaf "Server 2 ECDSA" "server-2-ecdsa" "ca-int-ecdsa" "ec:prime256v1"
+create_revoked_leaf "Server 3 ECDSA" "server-3-ecdsa" "ca-int-ecdsa" "ec:prime256v1"
+create_leaf "Client 1 ECDSA" "client-1-ecdsa" "ca-int-ecdsa" "ec:prime256v1"
+create_expired_leaf "Client 2 ECDSA" "client-2-ecdsa" "ca-int-ecdsa" "ec:prime256v1"
+create_revoked_leaf "Client 3 ECDSA" "client-3-ecdsa" "ca-int-ecdsa" "ec:prime256v1"
+
+create_bundle "./ca-root-ecdsa.pem" "ca-root-ecdsa"
+create_bundle "./ca-int-ecdsa.pem" "ca-int-ecdsa"
+cp "${TMPDIR}/ca-int-ecdsa.crl" "./ca-int-ecdsa.crl"
+create_bundle_with_key "./server1-ecdsa.pem" "server-1-ecdsa"
+create_bundle "./server1-ecdsa-chain.pem" "server-1-ecdsa" "ca-int-ecdsa"
+create_bundle_with_key "./server2-ecdsa.pem" "server-2-ecdsa"
+create_bundle "./server2-ecdsa-chain.pem" "server-2-ecdsa" "ca-int-ecdsa"
+create_bundle_with_key "./server3-ecdsa.pem" "server-3-ecdsa"
+create_bundle "./server3-ecdsa-chain.pem" "server-3-ecdsa" "ca-int-ecdsa"
+create_bundle_with_key "./client1-ecdsa.pem" "client-1-ecdsa"
+create_bundle "./client1-ecdsa-chain.pem" "client-1-ecdsa" "ca-int-ecdsa"
+create_bundle_with_key "./client2-ecdsa.pem" "client-2-ecdsa"
+create_bundle "./client2-ecdsa-chain.pem" "client-2-ecdsa" "ca-int-ecdsa"
+create_bundle_with_key "./client3-ecdsa.pem" "client-3-ecdsa"
+create_bundle "./client3-ecdsa-chain.pem" "client-3-ecdsa" "ca-int-ecdsa"