]> git.proxmox.com Git - mirror_edk2.git/blame_incremental - BaseTools/Source/Python/Rsa2048Sha256Sign/Rsa2048Sha256Sign.py
BaseTools: Replace StandardError with Expression
[mirror_edk2.git] / BaseTools / Source / Python / Rsa2048Sha256Sign / Rsa2048Sha256Sign.py
... / ...
CommitLineData
1## @file\r
2# This tool encodes and decodes GUIDed FFS sections or FMP capsule for a GUID type of\r
3# EFI_CERT_TYPE_RSA2048_SHA256_GUID defined in the UEFI 2.4 Specification as\r
4# {0xa7717414, 0xc616, 0x4977, {0x94, 0x20, 0x84, 0x47, 0x12, 0xa7, 0x35, 0xbf}}\r
5# This tool has been tested with OpenSSL 1.0.1e 11 Feb 2013\r
6#\r
7# Copyright (c) 2013 - 2018, Intel Corporation. All rights reserved.<BR>\r
8# This program and the accompanying materials\r
9# are licensed and made available under the terms and conditions of the BSD License\r
10# which accompanies this distribution. The full text of the license may be found at\r
11# http://opensource.org/licenses/bsd-license.php\r
12#\r
13# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
14# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
15#\r
16\r
17'''\r
18Rsa2048Sha256Sign\r
19'''\r
20from __future__ import print_function\r
21\r
22import os\r
23import sys\r
24import argparse \r
25import subprocess\r
26import uuid\r
27import struct\r
28import collections\r
29from Common.BuildVersion import gBUILD_VERSION\r
30\r
31#\r
32# Globals for help information\r
33#\r
34__prog__ = 'Rsa2048Sha256Sign'\r
35__version__ = '%s Version %s' % (__prog__, '0.9 ' + gBUILD_VERSION)\r
36__copyright__ = 'Copyright (c) 2013 - 2016, Intel Corporation. All rights reserved.'\r
37__usage__ = '%s -e|-d [options] <input_file>' % (__prog__)\r
38\r
39#\r
40# GUID for SHA 256 Hash Algorithm from UEFI Specification\r
41#\r
42EFI_HASH_ALGORITHM_SHA256_GUID = uuid.UUID('{51aa59de-fdf2-4ea3-bc63-875fb7842ee9}')\r
43\r
44#\r
45# Structure defintion to unpack EFI_CERT_BLOCK_RSA_2048_SHA256 from UEFI 2.4 Specification\r
46#\r
47# typedef struct _EFI_CERT_BLOCK_RSA_2048_SHA256 {\r
48# EFI_GUID HashType;\r
49# UINT8 PublicKey[256];\r
50# UINT8 Signature[256];\r
51# } EFI_CERT_BLOCK_RSA_2048_SHA256;\r
52#\r
53EFI_CERT_BLOCK_RSA_2048_SHA256 = collections.namedtuple('EFI_CERT_BLOCK_RSA_2048_SHA256', ['HashType','PublicKey','Signature'])\r
54EFI_CERT_BLOCK_RSA_2048_SHA256_STRUCT = struct.Struct('16s256s256s')\r
55\r
56#\r
57# Filename of test signing private key that is stored in same directory as this tool\r
58#\r
59TEST_SIGNING_PRIVATE_KEY_FILENAME = 'TestSigningPrivateKey.pem'\r
60\r
61if __name__ == '__main__':\r
62 #\r
63 # Create command line argument parser object\r
64 # \r
65 parser = argparse.ArgumentParser(prog=__prog__, version=__version__, usage=__usage__, description=__copyright__, conflict_handler='resolve')\r
66 group = parser.add_mutually_exclusive_group(required=True)\r
67 group.add_argument("-e", action="store_true", dest='Encode', help='encode file')\r
68 group.add_argument("-d", action="store_true", dest='Decode', help='decode file')\r
69 parser.add_argument("-o", "--output", dest='OutputFile', type=str, metavar='filename', help="specify the output filename", required=True)\r
70 parser.add_argument("--monotonic-count", dest='MonotonicCountStr', type=str, help="specify the MonotonicCount in FMP capsule.")\r
71 parser.add_argument("--private-key", dest='PrivateKeyFile', type=argparse.FileType('rb'), help="specify the private key filename. If not specified, a test signing key is used.")\r
72 parser.add_argument("-v", "--verbose", dest='Verbose', action="store_true", help="increase output messages")\r
73 parser.add_argument("-q", "--quiet", dest='Quiet', action="store_true", help="reduce output messages")\r
74 parser.add_argument("--debug", dest='Debug', type=int, metavar='[0-9]', choices=range(0,10), default=0, help="set debug level")\r
75 parser.add_argument(metavar="input_file", dest='InputFile', type=argparse.FileType('rb'), help="specify the input filename")\r
76\r
77 #\r
78 # Parse command line arguments\r
79 # \r
80 args = parser.parse_args()\r
81\r
82 #\r
83 # Generate file path to Open SSL command\r
84 #\r
85 OpenSslCommand = 'openssl'\r
86 try:\r
87 OpenSslPath = os.environ['OPENSSL_PATH']\r
88 OpenSslCommand = os.path.join(OpenSslPath, OpenSslCommand)\r
89 if ' ' in OpenSslCommand:\r
90 OpenSslCommand = '"' + OpenSslCommand + '"'\r
91 except:\r
92 pass\r
93\r
94 #\r
95 # Verify that Open SSL command is available\r
96 #\r
97 try:\r
98 Process = subprocess.Popen('%s version' % (OpenSslCommand), stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)\r
99 except: \r
100 print('ERROR: Open SSL command not available. Please verify PATH or set OPENSSL_PATH')\r
101 sys.exit(1)\r
102 \r
103 Version = Process.communicate()\r
104 if Process.returncode != 0:\r
105 print('ERROR: Open SSL command not available. Please verify PATH or set OPENSSL_PATH')\r
106 sys.exit(Process.returncode)\r
107 print(Version[0])\r
108 \r
109 #\r
110 # Read input file into a buffer and save input filename\r
111 # \r
112 args.InputFileName = args.InputFile.name\r
113 args.InputFileBuffer = args.InputFile.read()\r
114 args.InputFile.close()\r
115\r
116 #\r
117 # Save output filename and check if path exists\r
118 #\r
119 OutputDir = os.path.dirname(args.OutputFile)\r
120 if not os.path.exists(OutputDir):\r
121 print('ERROR: The output path does not exist: %s' % OutputDir)\r
122 sys.exit(1)\r
123 args.OutputFileName = args.OutputFile\r
124\r
125 #\r
126 # Save private key filename and close private key file\r
127 #\r
128 try:\r
129 args.PrivateKeyFileName = args.PrivateKeyFile.name\r
130 args.PrivateKeyFile.close()\r
131 except:\r
132 try:\r
133 #\r
134 # Get path to currently executing script or executable\r
135 #\r
136 if hasattr(sys, 'frozen'):\r
137 RsaToolPath = sys.executable\r
138 else:\r
139 RsaToolPath = sys.argv[0]\r
140 if RsaToolPath.startswith('"'):\r
141 RsaToolPath = RsaToolPath[1:]\r
142 if RsaToolPath.endswith('"'):\r
143 RsaToolPath = RsaToolPath[:-1]\r
144 args.PrivateKeyFileName = os.path.join(os.path.dirname(os.path.realpath(RsaToolPath)), TEST_SIGNING_PRIVATE_KEY_FILENAME)\r
145 args.PrivateKeyFile = open(args.PrivateKeyFileName, 'rb')\r
146 args.PrivateKeyFile.close()\r
147 except:\r
148 print('ERROR: test signing private key file %s missing' % (args.PrivateKeyFileName))\r
149 sys.exit(1)\r
150\r
151 #\r
152 # Extract public key from private key into STDOUT\r
153 #\r
154 Process = subprocess.Popen('%s rsa -in "%s" -modulus -noout' % (OpenSslCommand, args.PrivateKeyFileName), stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)\r
155 PublicKeyHexString = Process.communicate()[0].split('=')[1].strip()\r
156 PublicKey = ''\r
157 while len(PublicKeyHexString) > 0:\r
158 PublicKey = PublicKey + chr(int(PublicKeyHexString[0:2],16))\r
159 PublicKeyHexString=PublicKeyHexString[2:]\r
160 if Process.returncode != 0:\r
161 sys.exit(Process.returncode)\r
162\r
163 if args.MonotonicCountStr:\r
164 try:\r
165 if args.MonotonicCountStr.upper().startswith('0X'):\r
166 args.MonotonicCountValue = (long)(args.MonotonicCountStr, 16)\r
167 else:\r
168 args.MonotonicCountValue = (long)(args.MonotonicCountStr)\r
169 except:\r
170 pass\r
171\r
172 if args.Encode:\r
173 FullInputFileBuffer = args.InputFileBuffer\r
174 if args.MonotonicCountStr:\r
175 format = "%dsQ" % len(args.InputFileBuffer)\r
176 FullInputFileBuffer = struct.pack(format, args.InputFileBuffer, args.MonotonicCountValue)\r
177 # \r
178 # Sign the input file using the specified private key and capture signature from STDOUT\r
179 #\r
180 Process = subprocess.Popen('%s dgst -sha256 -sign "%s"' % (OpenSslCommand, args.PrivateKeyFileName), stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)\r
181 Signature = Process.communicate(input=FullInputFileBuffer)[0]\r
182 if Process.returncode != 0:\r
183 sys.exit(Process.returncode)\r
184 \r
185 #\r
186 # Write output file that contains hash GUID, Public Key, Signature, and Input data\r
187 # \r
188 args.OutputFile = open(args.OutputFileName, 'wb')\r
189 args.OutputFile.write(EFI_HASH_ALGORITHM_SHA256_GUID.get_bytes_le())\r
190 args.OutputFile.write(PublicKey)\r
191 args.OutputFile.write(Signature)\r
192 args.OutputFile.write(args.InputFileBuffer)\r
193 args.OutputFile.close()\r
194\r
195 if args.Decode:\r
196 #\r
197 # Parse Hash Type, Public Key, and Signature from the section header\r
198 #\r
199 Header = EFI_CERT_BLOCK_RSA_2048_SHA256._make(EFI_CERT_BLOCK_RSA_2048_SHA256_STRUCT.unpack_from(args.InputFileBuffer))\r
200 args.InputFileBuffer = args.InputFileBuffer[EFI_CERT_BLOCK_RSA_2048_SHA256_STRUCT.size:]\r
201 \r
202 #\r
203 # Verify that the Hash Type matches the expected SHA256 type\r
204 #\r
205 if uuid.UUID(bytes_le = Header.HashType) != EFI_HASH_ALGORITHM_SHA256_GUID:\r
206 print('ERROR: unsupport hash GUID')\r
207 sys.exit(1)\r
208\r
209 #\r
210 # Verify the public key\r
211 #\r
212 if Header.PublicKey != PublicKey:\r
213 print('ERROR: Public key in input file does not match public key from private key file')\r
214 sys.exit(1)\r
215\r
216 FullInputFileBuffer = args.InputFileBuffer\r
217 if args.MonotonicCountStr:\r
218 format = "%dsQ" % len(args.InputFileBuffer)\r
219 FullInputFileBuffer = struct.pack(format, args.InputFileBuffer, args.MonotonicCountValue)\r
220\r
221 #\r
222 # Write Signature to output file\r
223 #\r
224 open(args.OutputFileName, 'wb').write(Header.Signature)\r
225 \r
226 #\r
227 # Verify signature\r
228 # \r
229 Process = subprocess.Popen('%s dgst -sha256 -prverify "%s" -signature %s' % (OpenSslCommand, args.PrivateKeyFileName, args.OutputFileName), stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)\r
230 Process.communicate(input=FullInputFileBuffer)\r
231 if Process.returncode != 0:\r
232 print('ERROR: Verification failed')\r
233 os.remove (args.OutputFileName)\r
234 sys.exit(Process.returncode)\r
235\r
236 #\r
237 # Save output file contents from input file \r
238 # \r
239 open(args.OutputFileName, 'wb').write(args.InputFileBuffer)\r