mirror of https://github.com/acidanthera/audk.git
281 lines
11 KiB
Python
281 lines
11 KiB
Python
## @file
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# This tool adds EFI_FIRMWARE_IMAGE_AUTHENTICATION for a binary.
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#
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# This tool only support CertType - EFI_CERT_TYPE_PKCS7_GUID
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# {0x4aafd29d, 0x68df, 0x49ee, {0x8a, 0xa9, 0x34, 0x7d, 0x37, 0x56, 0x65, 0xa7}}
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#
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# This tool has been tested with OpenSSL.
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#
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# Copyright (c) 2016 - 2017, Intel Corporation. All rights reserved.<BR>
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# SPDX-License-Identifier: BSD-2-Clause-Patent
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#
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'''
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Pkcs7Sign
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'''
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from __future__ import print_function
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import os
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import sys
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import argparse
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import subprocess
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import uuid
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import struct
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import collections
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from Common.BuildVersion import gBUILD_VERSION
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#
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# Globals for help information
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#
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__prog__ = 'Pkcs7Sign'
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__version__ = '%s Version %s' % (__prog__, '0.9 ' + gBUILD_VERSION)
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__copyright__ = 'Copyright (c) 2016, Intel Corporation. All rights reserved.'
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__usage__ = '%s -e|-d [options] <input_file>' % (__prog__)
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#
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# GUID for PKCS7 from UEFI Specification
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#
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WIN_CERT_REVISION = 0x0200
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WIN_CERT_TYPE_EFI_GUID = 0x0EF1
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EFI_CERT_TYPE_PKCS7_GUID = uuid.UUID('{4aafd29d-68df-49ee-8aa9-347d375665a7}')
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#
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# typedef struct _WIN_CERTIFICATE {
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# UINT32 dwLength;
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# UINT16 wRevision;
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# UINT16 wCertificateType;
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# //UINT8 bCertificate[ANYSIZE_ARRAY];
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# } WIN_CERTIFICATE;
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#
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# typedef struct _WIN_CERTIFICATE_UEFI_GUID {
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# WIN_CERTIFICATE Hdr;
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# EFI_GUID CertType;
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# //UINT8 CertData[ANYSIZE_ARRAY];
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# } WIN_CERTIFICATE_UEFI_GUID;
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#
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# typedef struct {
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# UINT64 MonotonicCount;
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# WIN_CERTIFICATE_UEFI_GUID AuthInfo;
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# } EFI_FIRMWARE_IMAGE_AUTHENTICATION;
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#
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#
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# Filename of test signing private cert that is stored in same directory as this tool
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#
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TEST_SIGNER_PRIVATE_CERT_FILENAME = 'TestCert.pem'
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TEST_OTHER_PUBLIC_CERT_FILENAME = 'TestSub.pub.pem'
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TEST_TRUSTED_PUBLIC_CERT_FILENAME = 'TestRoot.pub.pem'
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if __name__ == '__main__':
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#
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# Create command line argument parser object
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#
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parser = argparse.ArgumentParser(prog=__prog__, usage=__usage__, description=__copyright__, conflict_handler='resolve')
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group = parser.add_mutually_exclusive_group(required=True)
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group.add_argument("-e", action="store_true", dest='Encode', help='encode file')
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group.add_argument("-d", action="store_true", dest='Decode', help='decode file')
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group.add_argument("--version", action='version', version=__version__)
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parser.add_argument("-o", "--output", dest='OutputFile', type=str, metavar='filename', help="specify the output filename", required=True)
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parser.add_argument("--signer-private-cert", dest='SignerPrivateCertFile', type=argparse.FileType('rb'), help="specify the signer private cert filename. If not specified, a test signer private cert is used.")
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parser.add_argument("--other-public-cert", dest='OtherPublicCertFile', type=argparse.FileType('rb'), help="specify the other public cert filename. If not specified, a test other public cert is used.")
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parser.add_argument("--trusted-public-cert", dest='TrustedPublicCertFile', type=argparse.FileType('rb'), help="specify the trusted public cert filename. If not specified, a test trusted public cert is used.")
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parser.add_argument("--monotonic-count", dest='MonotonicCountStr', type=str, help="specify the MonotonicCount in FMP capsule. If not specified, 0 is used.")
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parser.add_argument("--signature-size", dest='SignatureSizeStr', type=str, help="specify the signature size for decode process.")
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parser.add_argument("-v", "--verbose", dest='Verbose', action="store_true", help="increase output messages")
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parser.add_argument("-q", "--quiet", dest='Quiet', action="store_true", help="reduce output messages")
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parser.add_argument("--debug", dest='Debug', type=int, metavar='[0-9]', choices=range(0, 10), default=0, help="set debug level")
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parser.add_argument(metavar="input_file", dest='InputFile', type=argparse.FileType('rb'), help="specify the input filename")
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#
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# Parse command line arguments
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#
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args = parser.parse_args()
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#
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# Generate file path to Open SSL command
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#
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OpenSslCommand = 'openssl'
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try:
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OpenSslPath = os.environ['OPENSSL_PATH']
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OpenSslCommand = os.path.join(OpenSslPath, OpenSslCommand)
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if ' ' in OpenSslCommand:
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OpenSslCommand = '"' + OpenSslCommand + '"'
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except:
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pass
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#
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# Verify that Open SSL command is available
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#
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try:
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Process = subprocess.Popen('%s version' % (OpenSslCommand), stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
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except:
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print('ERROR: Open SSL command not available. Please verify PATH or set OPENSSL_PATH')
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sys.exit(1)
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Version = Process.communicate()
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if Process.returncode != 0:
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print('ERROR: Open SSL command not available. Please verify PATH or set OPENSSL_PATH')
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sys.exit(Process.returncode)
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print(Version[0].decode())
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#
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# Read input file into a buffer and save input filename
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#
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args.InputFileName = args.InputFile.name
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args.InputFileBuffer = args.InputFile.read()
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args.InputFile.close()
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#
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# Save output filename and check if path exists
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#
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OutputDir = os.path.dirname(args.OutputFile)
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if not os.path.exists(OutputDir):
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print('ERROR: The output path does not exist: %s' % OutputDir)
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sys.exit(1)
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args.OutputFileName = args.OutputFile
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try:
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if args.MonotonicCountStr.upper().startswith('0X'):
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args.MonotonicCountValue = int(args.MonotonicCountStr, 16)
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else:
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args.MonotonicCountValue = int(args.MonotonicCountStr)
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except:
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args.MonotonicCountValue = int(0)
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if args.Encode:
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#
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# Save signer private cert filename and close private cert file
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#
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try:
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args.SignerPrivateCertFileName = args.SignerPrivateCertFile.name
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args.SignerPrivateCertFile.close()
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except:
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try:
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#
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# Get path to currently executing script or executable
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#
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if hasattr(sys, 'frozen'):
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Pkcs7ToolPath = sys.executable
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else:
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Pkcs7ToolPath = sys.argv[0]
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if Pkcs7ToolPath.startswith('"'):
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Pkcs7ToolPath = Pkcs7ToolPath[1:]
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if Pkcs7ToolPath.endswith('"'):
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Pkcs7ToolPath = RsaToolPath[:-1]
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args.SignerPrivateCertFileName = os.path.join(os.path.dirname(os.path.realpath(Pkcs7ToolPath)), TEST_SIGNER_PRIVATE_CERT_FILENAME)
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args.SignerPrivateCertFile = open(args.SignerPrivateCertFileName, 'rb')
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args.SignerPrivateCertFile.close()
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except:
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print('ERROR: test signer private cert file %s missing' % (args.SignerPrivateCertFileName))
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sys.exit(1)
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#
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# Save other public cert filename and close public cert file
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#
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try:
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args.OtherPublicCertFileName = args.OtherPublicCertFile.name
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args.OtherPublicCertFile.close()
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except:
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try:
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#
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# Get path to currently executing script or executable
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#
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if hasattr(sys, 'frozen'):
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Pkcs7ToolPath = sys.executable
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else:
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Pkcs7ToolPath = sys.argv[0]
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if Pkcs7ToolPath.startswith('"'):
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Pkcs7ToolPath = Pkcs7ToolPath[1:]
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if Pkcs7ToolPath.endswith('"'):
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Pkcs7ToolPath = RsaToolPath[:-1]
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args.OtherPublicCertFileName = os.path.join(os.path.dirname(os.path.realpath(Pkcs7ToolPath)), TEST_OTHER_PUBLIC_CERT_FILENAME)
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args.OtherPublicCertFile = open(args.OtherPublicCertFileName, 'rb')
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args.OtherPublicCertFile.close()
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except:
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print('ERROR: test other public cert file %s missing' % (args.OtherPublicCertFileName))
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sys.exit(1)
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format = "%dsQ" % len(args.InputFileBuffer)
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FullInputFileBuffer = struct.pack(format, args.InputFileBuffer, args.MonotonicCountValue)
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#
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# Sign the input file using the specified private key and capture signature from STDOUT
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#
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Process = subprocess.Popen('%s smime -sign -binary -signer "%s" -outform DER -md sha256 -certfile "%s"' % (OpenSslCommand, args.SignerPrivateCertFileName, args.OtherPublicCertFileName), stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
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Signature = Process.communicate(input=FullInputFileBuffer)[0]
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if Process.returncode != 0:
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sys.exit(Process.returncode)
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#
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# Write output file that contains Signature, and Input data
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#
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args.OutputFile = open(args.OutputFileName, 'wb')
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args.OutputFile.write(Signature)
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args.OutputFile.write(args.InputFileBuffer)
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args.OutputFile.close()
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if args.Decode:
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#
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# Save trusted public cert filename and close public cert file
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#
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try:
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args.TrustedPublicCertFileName = args.TrustedPublicCertFile.name
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args.TrustedPublicCertFile.close()
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except:
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try:
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#
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# Get path to currently executing script or executable
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#
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if hasattr(sys, 'frozen'):
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Pkcs7ToolPath = sys.executable
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else:
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Pkcs7ToolPath = sys.argv[0]
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if Pkcs7ToolPath.startswith('"'):
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Pkcs7ToolPath = Pkcs7ToolPath[1:]
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if Pkcs7ToolPath.endswith('"'):
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Pkcs7ToolPath = RsaToolPath[:-1]
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args.TrustedPublicCertFileName = os.path.join(os.path.dirname(os.path.realpath(Pkcs7ToolPath)), TEST_TRUSTED_PUBLIC_CERT_FILENAME)
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args.TrustedPublicCertFile = open(args.TrustedPublicCertFileName, 'rb')
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args.TrustedPublicCertFile.close()
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except:
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print('ERROR: test trusted public cert file %s missing' % (args.TrustedPublicCertFileName))
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sys.exit(1)
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if not args.SignatureSizeStr:
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print("ERROR: please use the option --signature-size to specify the size of the signature data!")
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sys.exit(1)
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else:
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if args.SignatureSizeStr.upper().startswith('0X'):
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SignatureSize = int(args.SignatureSizeStr, 16)
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else:
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SignatureSize = int(args.SignatureSizeStr)
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if SignatureSize < 0:
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print("ERROR: The value of option --signature-size can't be set to negative value!")
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sys.exit(1)
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elif SignatureSize > len(args.InputFileBuffer):
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print("ERROR: The value of option --signature-size is exceed the size of the input file !")
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sys.exit(1)
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args.SignatureBuffer = args.InputFileBuffer[0:SignatureSize]
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args.InputFileBuffer = args.InputFileBuffer[SignatureSize:]
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format = "%dsQ" % len(args.InputFileBuffer)
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FullInputFileBuffer = struct.pack(format, args.InputFileBuffer, args.MonotonicCountValue)
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#
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# Save output file contents from input file
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#
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open(args.OutputFileName, 'wb').write(FullInputFileBuffer)
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#
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# Verify signature
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#
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Process = subprocess.Popen('%s smime -verify -inform DER -content %s -CAfile %s' % (OpenSslCommand, args.OutputFileName, args.TrustedPublicCertFileName), stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
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Process.communicate(input=args.SignatureBuffer)[0]
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if Process.returncode != 0:
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print('ERROR: Verification failed')
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os.remove (args.OutputFileName)
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sys.exit(Process.returncode)
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open(args.OutputFileName, 'wb').write(args.InputFileBuffer)
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