#! /bin/bash # # Copyright (c) 2016 Viktor Dukhovni . # All rights reserved. # # Contributed to the OpenSSL project under the terms of the OpenSSL license # included with the version of the OpenSSL software that includes this module. # 100 years should be enough for now # DAYS=36525 if [ -z "$OPENSSL_SIGALG" ]; then OPENSSL_SIGALG=sha256 fi stderr_onerror() { ( err=$("$@" >&3 2>&1) || { printf "%s\n" "$err" >&2 exit 1 } ) 3>&1 } key() { local key=$1; shift local alg=rsa if [ -n "$OPENSSL_KEYALG" ]; then alg=$OPENSSL_KEYALG fi local bits=2048 if [ -n "$OPENSSL_KEYBITS" ]; then bits=$OPENSSL_KEYBITS fi if [ ! -f "${key}.pem" ]; then args=(-algorithm "$alg") case $alg in rsa) args=("${args[@]}" -pkeyopt rsa_keygen_bits:$bits );; ec) args=("${args[@]}" -pkeyopt "ec_paramgen_curve:$bits") args=("${args[@]}" -pkeyopt ec_param_enc:named_curve);; *) printf "Unsupported key algorithm: %s\n" "$alg" >&2; return 1;; esac stderr_onerror \ openssl genpkey "${args[@]}" -out "${key}.pem" fi } # Usage: $0 req keyname dn1 dn2 ... req() { local key=$1; shift key "$key" local errs stderr_onerror \ openssl req -new -"${OPENSSL_SIGALG}" -key "${key}.pem" \ -config <(printf "[req]\n%s\n%s\n[dn]\n" \ "prompt = no" "distinguished_name = dn" "${dn}" for dn in "$@"; do echo "$dn"; done) } req_nocn() { local key=$1; shift key "$key" stderr_onerror \ openssl req -new -"${OPENSSL_SIGALG}" -subj / -key "${key}.pem" \ -config <(printf "[req]\n%s\n[dn]\nCN_default =\n" \ "distinguished_name = dn") } cert() { local cert=$1; shift local exts=$1; shift stderr_onerror \ openssl x509 -req -"${OPENSSL_SIGALG}" -out "${cert}.pem" \ -extfile <(printf "%s\n" "$exts") "$@" } genroot() { local cn=$1; shift local key=$1; shift local cert=$1; shift local skid="subjectKeyIdentifier = hash" local akid="authorityKeyIdentifier = keyid" exts=$(printf "%s\n%s\n%s\n" "$skid" "$akid" "basicConstraints = critical,CA:true") for eku in "$@" do exts=$(printf "%s\nextendedKeyUsage = %s\n" "$exts" "$eku") done csr=$(req "$key" "CN = $cn") || return 1 echo "$csr" | cert "$cert" "$exts" -signkey "${key}.pem" -set_serial 1 -days "${DAYS}" } genca() { local cn=$1; shift local key=$1; shift local cert=$1; shift local cakey=$1; shift local cacert=$1; shift local skid="subjectKeyIdentifier = hash" local akid="authorityKeyIdentifier = keyid" exts=$(printf "%s\n%s\n%s\n" "$skid" "$akid" "basicConstraints = critical,CA:true") for eku in "$@" do exts=$(printf "%s\nextendedKeyUsage = %s\n" "$exts" "$eku") done csr=$(req "$key" "CN = $cn") || return 1 echo "$csr" | cert "$cert" "$exts" -CA "${cacert}.pem" -CAkey "${cakey}.pem" \ -set_serial 2 -days "${DAYS}" } gen_nonbc_ca() { local cn=$1; shift local key=$1; shift local cert=$1; shift local cakey=$1; shift local cacert=$1; shift local skid="subjectKeyIdentifier = hash" local akid="authorityKeyIdentifier = keyid" exts=$(printf "%s\n%s\n%s\n" "$skid" "$akid") exts=$(printf "%s\nkeyUsage = %s\n" "$exts" "keyCertSign, cRLSign") for eku in "$@" do exts=$(printf "%s\nextendedKeyUsage = %s\n" "$exts" "$eku") done csr=$(req "$key" "CN = $cn") || return 1 echo "$csr" | cert "$cert" "$exts" -CA "${cacert}.pem" -CAkey "${cakey}.pem" \ -set_serial 2 -days "${DAYS}" } # Usage: $0 genpc keyname certname eekeyname eecertname pcext1 pcext2 ... # # Note: takes csr on stdin, so must be used with $0 req like this: # # $0 req keyname dn | $0 genpc keyname certname eekeyname eecertname pcext ... genpc() { local key=$1; shift local cert=$1; shift local cakey=$1; shift local ca=$1; shift exts=$(printf "%s\n%s\n%s\n%s\n" \ "subjectKeyIdentifier = hash" \ "authorityKeyIdentifier = keyid, issuer:always" \ "basicConstraints = CA:false" \ "proxyCertInfo = critical, @pcexts"; echo "[pcexts]"; for x in "$@"; do echo $x; done) cert "$cert" "$exts" -CA "${ca}.pem" -CAkey "${cakey}.pem" \ -set_serial 2 -days "${DAYS}" } genee() { local OPTIND=1 local purpose=serverAuth while getopts p: o do case $o in p) purpose="$OPTARG";; *) echo "Usage: $0 genee [-p EKU] cn keyname certname cakeyname cacertname" >&2 return 1;; esac done shift $((OPTIND - 1)) local cn=$1; shift local key=$1; shift local cert=$1; shift local cakey=$1; shift local ca=$1; shift exts=$(printf "%s\n%s\n%s\n%s\n%s\n[alts]\n%s\n" \ "subjectKeyIdentifier = hash" \ "authorityKeyIdentifier = keyid, issuer" \ "basicConstraints = CA:false" \ "extendedKeyUsage = $purpose" \ "subjectAltName = @alts" "DNS=${cn}") csr=$(req "$key" "CN = $cn") || return 1 echo "$csr" | cert "$cert" "$exts" -CA "${ca}.pem" -CAkey "${cakey}.pem" \ -set_serial 2 -days "${DAYS}" "$@" } genss() { local cn=$1; shift local key=$1; shift local cert=$1; shift exts=$(printf "%s\n%s\n%s\n%s\n%s\n[alts]\n%s\n" \ "subjectKeyIdentifier = hash" \ "authorityKeyIdentifier = keyid, issuer" \ "basicConstraints = CA:false" \ "extendedKeyUsage = serverAuth" \ "subjectAltName = @alts" "DNS=${cn}") csr=$(req "$key" "CN = $cn") || return 1 echo "$csr" | cert "$cert" "$exts" -signkey "${key}.pem" \ -set_serial 1 -days "${DAYS}" "$@" } gennocn() { local key=$1; shift local cert=$1; shift csr=$(req_nocn "$key") || return 1 echo "$csr" | cert "$cert" "" -signkey "${key}.pem" -set_serial 1 -days -1 "$@" } "$@"