#!/bin/bash # Copyright 2023 Google LLC. # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # https://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. set -eux SOFTHSM2_MODULE="/usr/lib/x86_64-linux-gnu/softhsm/libsofthsm2.so" TOKEN_NAME="Demo Token" OBJECT_LABEL="Demo Object" PIN="0000" install_dependencies() { # Install PKCS #11 related dependencies. # 1. softhsm2 is a software based HSM that implements the PKCS #11 spec. # 2. libp11-kit-dev contains a shared library at we will use to interact with # PKCS #11 device module, as well as pkcs11-tool which will be used for # interacting with the PKCS #11 module. # 3. gnutls-bin contains p11-tool which we will use to create PKCS #11 URIs. sudo apt install softhsm2 libp11-kit-dev gnutls-bin opensc } setup_pkcs11_module() { # Make softhsm2 discoverable by PKCS #11 tools. sudo mkdir -p /etc/pkcs11/modules && echo "module: /usr/lib/softhsm/libsofthsm2.so" | sudo tee -a /etc/pkcs11/modules/softhsm.module # Create folder for storing PKCS #11 objects mkdir -p $HOME/.config/softhsm2/tokens cat < $HOME/.config/softhsm2/softhsm2.conf directories.tokendir = $HOME/.config/softhsm2/tokens/ objectstore.backend = file log.level = INFO slots.removable = true EOF pkcs11-tool --init-token --label "$TOKEN_NAME" --module $SOFTHSM2_MODULE --slot 0 --so-pin $PIN SLOT=$(pkcs11-tool --list-slots --module $SOFTHSM2_MODULE | grep -Eo "0x[A-Fa-f0-9]+" | head -n 1) pkcs11-tool --module $SOFTHSM2_MODULE --token-label "$TOKEN_NAME" --login --init-pin --pin $PIN --so-pin $PIN BUILD_DIR=$(mktemp -d) pushd $BUILD_DIR openssl req -x509 -newkey rsa:4096 -keyout key.pem -out cert.pem -sha256 -days 365 -nodes -subj "/C=US/ST=WA/L=Sea/O=My Inc/OU=DevOps/CN=www.example.com/emailAddress=dev@www.example.com" openssl x509 -pubkey -noout -in cert.pem > public_key.pem openssl x509 -in cert.pem -out cert.der -outform der openssl rsa -in key.pem -outform DER -out private_key.der openssl rsa -inform pem -in public_key.pem -outform der -out public_key.der -pubin pkcs11-tool --module $SOFTHSM2_MODULE --slot $SLOT --write-object cert.der --type cert --label "$OBJECT_LABEL" --login --pin $PIN pkcs11-tool --module $SOFTHSM2_MODULE --slot $SLOT --write-object private_key.der --type privkey --label "$OBJECT_LABEL" --login --pin $PIN pkcs11-tool --module $SOFTHSM2_MODULE --slot $SLOT --write-object public_key.der --type pubkey --label "$OBJECT_LABEL" --login --pin $PIN rm -rf $BUILD_DIR popd } if [ $# -eq 0 ]; then install_dependencies setup_pkcs11_module fi