115 lines
3.8 KiB
Bash
Executable File
115 lines
3.8 KiB
Bash
Executable File
#!/usr/bin/env bash
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# This script will generate key needed by the UEFI secure boot implementation
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# under $BUILDDIR/keys
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# db.auth db.der db.key KEK.crt KEK.esl PK.auth PK.der PK.key
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# db.crt db.esl KEK.auth KEK.der KEK.key PK.crt PK.esl
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# This script is used every time the build environment of CoreOS is sourced
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# Note: in the build environment stdout is redirected to /dev/null but not
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# stderr.
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set -e
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# Logging helper
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RED='\033[0;31m'
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GREEN='\033[0;32m'
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BOLD='\033[1m'
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RESET='\033[0m'
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# Ensure that BUILDDIR is defined
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# ==============================================================================
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# This is usually done inside the coreos-init-build-env script
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if [ -z "$BUILDDIR" ]; then
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echo -e "${RED}BUILDDIR is not defined${RESET}" 2>&1
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echo -e "Have you run the coreos-init-buildenv script?" 2>&1
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exit 1
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fi
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# We need the KEYDIR directory to exist
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# ==============================================================================
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KEYDIR="${BUILDDIR}/keys"
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mkdir -p "${KEYDIR}"
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cd "${KEYDIR}"
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# we need openssl, cert-to-efi-sig-list and sign-efi-sig-list
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# ==============================================================================
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assert_command_in_path() {
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if command -v "$1" >/dev/null 2>&1; then
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echo -e "✓ Command ${GREEN}${1}${RESET} was found"
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else
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echo -e "✗ ${RED}Command ${BOLD}${1}${RESET}${RED} was not found in your path${RESET}" >&2
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echo -e "Please check the coreos-documentation for the list of required packages" >&2
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exit 1
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fi
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}
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assert_command_in_path openssl
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assert_command_in_path cert-to-efi-sig-list
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assert_command_in_path sign-efi-sig-list
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# Generate all they keys, as needed
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# ==============================================================================
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# Only generate the file if it's missing and don't fail if the file already
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# exist
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check_files_exist() {
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for file in "$@"; do
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echo -e "✓ File ${GREEN}${file}${RESET} already exist"
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if [ ! -e "$file" ]; then
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return 1
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fi
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done
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return 0
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}
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echo "Generating private/public keys in .key/.crt format for PK, KEK et db"
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check_files_exist PK.key PK.crt || \
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openssl req -x509 -sha256 -newkey rsa:2048 -subj /CN=TEST_PK/ \
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-keyout PK.key -out PK.crt -nodes -days 365
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check_files_exist KEK.key KEK.crt || \
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openssl req -x509 -sha256 -newkey rsa:2048 -subj /CN=TEST_KEK/ \
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-keyout KEK.key -out KEK.crt -nodes -days 365
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check_files_exist db.key db.crt || \
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openssl req -x509 -sha256 -newkey rsa:2048 -subj /CN=TEST_db/ \
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-keyout db.key -out db.crt -nodes -days 365
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echo "Generatic EFI signature list file with PK, KEK et db public key"
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check_files_exist PK.esl || \
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cert-to-efi-sig-list -g 11111111-2222-3333-4444-123456789abc \
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PK.crt PK.esl;
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check_files_exist KEK.esl || \
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cert-to-efi-sig-list -g 11111111-2222-3333-4444-123456789abc \
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KEK.crt KEK.esl
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check_files_exist db.esl || \
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cert-to-efi-sig-list -g 11111111-2222-3333-4444-123456789abc \
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db.crt db.esl
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echo "Generatic EFI AUTH file with PK, KEK et db public key"
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check_files_exist PK.auth || sign-efi-sig-list -c PK.crt -k PK.key PK PK.esl PK.auth
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check_files_exist KEK.auth || sign-efi-sig-list -c PK.crt -k PK.key KEK KEK.esl KEK.auth
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check_files_exist db.auth || sign-efi-sig-list -c KEK.crt -k KEK.key db db.esl db.auth
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echo "Generatic DER files with PK, KEK et db public key"
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# der certificate are need for OVMF based firmware (virtual machine)
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check_files_exist PK.der || openssl x509 -in PK.crt -outform der -out PK.der
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check_files_exist KEK.der || openssl x509 -in KEK.crt -outform der -out KEK.der
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check_files_exist db.der || openssl x509 -in db.crt -outform der -out db.der
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# keys needed to sign and verify SWUpdate
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check_files_exist swupdate.key swupdate.crt || openssl req -x509 -newkey rsa:4096 -nodes -keyout swupdate.key \
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-out swupdate.crt -subj "/O=SWUpdate /CN=target"
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