mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-13 14:53:06 +00:00
953d4177af
And a new entry type which supports generation of x509 certificates. This uses a new 'openssl' btool with just one operation so far. Signed-off-by: Simon Glass <sjg@chromium.org>
94 lines
2.7 KiB
Python
94 lines
2.7 KiB
Python
# SPDX-License-Identifier: GPL-2.0+
|
|
# Copyright 2022 Google LLC
|
|
#
|
|
"""Bintool implementation for openssl
|
|
|
|
openssl provides a number of features useful for signing images
|
|
|
|
Documentation is at https://www.coreboot.org/CBFS
|
|
|
|
Source code is at https://www.openssl.org/
|
|
"""
|
|
|
|
import hashlib
|
|
|
|
from binman import bintool
|
|
from u_boot_pylib import tools
|
|
|
|
class Bintoolopenssl(bintool.Bintool):
|
|
"""openssl tool
|
|
|
|
This bintool supports creating new openssl certificates.
|
|
|
|
It also supports fetching a binary openssl
|
|
|
|
Documentation about openssl is at https://www.openssl.org/
|
|
"""
|
|
def __init__(self, name):
|
|
super().__init__(
|
|
name, 'openssl cryptography toolkit',
|
|
version_regex=r'OpenSSL (.*) \(', version_args='version')
|
|
|
|
def x509_cert(self, cert_fname, input_fname, key_fname, cn, revision,
|
|
config_fname):
|
|
"""Create a certificate
|
|
|
|
Args:
|
|
cert_fname (str): Filename of certificate to create
|
|
input_fname (str): Filename containing data to sign
|
|
key_fname (str): Filename of .pem file
|
|
cn (str): Common name
|
|
revision (int): Revision number
|
|
config_fname (str): Filename to write fconfig into
|
|
|
|
Returns:
|
|
str: Tool output
|
|
"""
|
|
indata = tools.read_file(input_fname)
|
|
hashval = hashlib.sha512(indata).hexdigest()
|
|
with open(config_fname, 'w', encoding='utf-8') as outf:
|
|
print(f'''[ req ]
|
|
distinguished_name = req_distinguished_name
|
|
x509_extensions = v3_ca
|
|
prompt = no
|
|
dirstring_type = nobmp
|
|
|
|
[ req_distinguished_name ]
|
|
CN = {cert_fname}
|
|
|
|
[ v3_ca ]
|
|
basicConstraints = CA:true
|
|
1.3.6.1.4.1.294.1.3 = ASN1:SEQUENCE:swrv
|
|
1.3.6.1.4.1.294.1.34 = ASN1:SEQUENCE:sysfw_image_integrity
|
|
|
|
[ swrv ]
|
|
swrv = INTEGER:{revision}
|
|
|
|
[ sysfw_image_integrity ]
|
|
shaType = OID:2.16.840.1.101.3.4.2.3
|
|
shaValue = FORMAT:HEX,OCT:{hashval}
|
|
imageSize = INTEGER:{len(indata)}
|
|
''', file=outf)
|
|
args = ['req', '-new', '-x509', '-key', key_fname, '-nodes',
|
|
'-outform', 'DER', '-out', cert_fname, '-config', config_fname,
|
|
'-sha512']
|
|
return self.run_cmd(*args)
|
|
|
|
def fetch(self, method):
|
|
"""Fetch handler for openssl
|
|
|
|
This installs the openssl package using the apt utility.
|
|
|
|
Args:
|
|
method (FETCH_...): Method to use
|
|
|
|
Returns:
|
|
True if the file was fetched and now installed, None if a method
|
|
other than FETCH_BIN was requested
|
|
|
|
Raises:
|
|
Valuerror: Fetching could not be completed
|
|
"""
|
|
if method != bintool.FETCH_BIN:
|
|
return None
|
|
return self.apt_install('openssl')
|