mirror of https://github.com/acidanthera/audk.git
173 lines
6.5 KiB
Python
173 lines
6.5 KiB
Python
## @file
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# This tool can be used to generate new RSA 2048 bit private/public key pairs
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# in a PEM file format using OpenSSL command line utilities that are installed
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# on the path specified by the system environment variable OPENSSL_PATH.
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# This tool can also optionally write one or more SHA 256 hashes of 2048 bit
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# public keys to a binary file, write one or more SHA 256 hashes of 2048 bit
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# public keys to a file in a C structure format, and in verbose mode display
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# one or more SHA 256 hashes of 2048 bit public keys in a C structure format
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# on STDOUT.
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# This tool has been tested with OpenSSL 1.0.1e 11 Feb 2013
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#
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# Copyright (c) 2013 - 2014, Intel Corporation. All rights reserved.<BR>
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# This program and the accompanying materials
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# are licensed and made available under the terms and conditions of the BSD License
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# which accompanies this distribution. The full text of the license may be found at
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# http://opensource.org/licenses/bsd-license.php
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#
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# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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#
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'''
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Rsa2048Sha256GenerateKeys
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'''
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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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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__ = 'Rsa2048Sha256GenerateKeys'
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__version__ = '%s Version %s' % (__prog__, '0.9 ' + gBUILD_VERSION)
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__copyright__ = 'Copyright (c) 2013 - 2014, Intel Corporation. All rights reserved.'
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__usage__ = '%s [options]' % (__prog__)
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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__, version=__version__, 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("-o", "--output", dest='OutputFile', type=argparse.FileType('wb'), metavar='filename', nargs='*', help="specify the output private key filename in PEM format")
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group.add_argument("-i", "--input", dest='InputFile', type=argparse.FileType('rb'), metavar='filename', nargs='*', help="specify the input private key filename in PEM format")
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parser.add_argument("--public-key-hash", dest='PublicKeyHashFile', type=argparse.FileType('wb'), help="specify the public key hash filename that is SHA 256 hash of 2048 bit RSA public key in binary format")
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parser.add_argument("--public-key-hash-c", dest='PublicKeyHashCFile', type=argparse.FileType('wb'), help="specify the public key hash filename that is SHA 256 hash of 2048 bit RSA public key in C structure format")
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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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#
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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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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)
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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]
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args.PemFileName = []
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#
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# Check for output file argument
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#
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if args.OutputFile <> None:
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for Item in args.OutputFile:
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#
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# Save PEM filename and close output file
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#
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args.PemFileName.append(Item.name)
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Item.close()
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#
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# Generate private key and save it to output file in a PEM file format
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#
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Process = subprocess.Popen('%s genrsa -out %s 2048' % (OpenSslCommand, Item.name), stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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Process.communicate()
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if Process.returncode <> 0:
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print 'ERROR: RSA 2048 key generation failed'
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sys.exit(Process.returncode)
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#
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# Check for input file argument
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#
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if args.InputFile <> None:
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for Item in args.InputFile:
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#
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# Save PEM filename and close input file
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#
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args.PemFileName.append(Item.name)
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Item.close()
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PublicKeyHash = ''
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for Item in args.PemFileName:
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#
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# Extract public key from private key into STDOUT
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#
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Process = subprocess.Popen('%s rsa -in %s -modulus -noout' % (OpenSslCommand, Item), stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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PublicKeyHexString = Process.communicate()[0].split('=')[1].strip()
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if Process.returncode <> 0:
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print 'ERROR: Unable to extract public key from private key'
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sys.exit(Process.returncode)
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PublicKey = ''
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for Index in range (0, len(PublicKeyHexString), 2):
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PublicKey = PublicKey + chr(int(PublicKeyHexString[Index:Index + 2], 16))
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#
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# Generate SHA 256 hash of RSA 2048 bit public key into STDOUT
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#
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Process = subprocess.Popen('%s dgst -sha256 -binary' % (OpenSslCommand), stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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Process.stdin.write (PublicKey)
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PublicKeyHash = PublicKeyHash + Process.communicate()[0]
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if Process.returncode <> 0:
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print 'ERROR: Unable to extract SHA 256 hash of public key'
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sys.exit(Process.returncode)
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#
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# Write SHA 256 hash of 2048 bit binary public key to public key hash file
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#
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try:
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args.PublicKeyHashFile.write (PublicKeyHash)
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args.PublicKeyHashFile.close ()
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except:
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pass
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#
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# Convert public key hash to a C structure string
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#
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PublicKeyHashC = '{'
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for Item in PublicKeyHash:
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PublicKeyHashC = PublicKeyHashC + '0x%02x, ' % (ord(Item))
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PublicKeyHashC = PublicKeyHashC[:-2] + '}'
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#
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# Write SHA 256 of 2048 bit binary public key to public key hash C structure file
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#
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try:
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args.PublicKeyHashCFile.write (PublicKeyHashC)
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args.PublicKeyHashCFile.close ()
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except:
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pass
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#
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# If verbose is enabled display the public key in C structure format
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#
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if args.Verbose:
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print 'PublicKeySha256 = ' + PublicKeyHashC
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