BaseTools/Source/Python/Rsa2048Sha256Sign/Rsa2048Sha256GenerateKeys.py

   1 ## @file
   2 # This tool can be used to generate new RSA 2048 bit private/public key pairs
   3 # in a PEM file format using OpenSSL command line utilities that are installed
   4 # on the path specified by the system environment variable OPENSSL_PATH.
   5 # This tool can also optionally write one or more SHA 256 hashes of 2048 bit
   6 # public keys to a binary file, write one or more SHA 256 hashes of 2048 bit
   7 # public keys to a file in a C structure format, and in verbose mode display
   8 # one or more SHA 256 hashes of 2048 bit public keys in a C structure format
   9 # on STDOUT.
  10 # This tool has been tested with OpenSSL 1.0.1e 11 Feb 2013
  11 #
  12 # Copyright (c) 2013 - 2014, Intel Corporation. All rights reserved.<BR>
  13 # This program and the accompanying materials
  14 # are licensed and made available under the terms and conditions of the BSD License
  15 # which accompanies this distribution.  The full text of the license may be found at
  16 # http://opensource.org/licenses/bsd-license.php
  17 #
  18 # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  19 # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  20 #
  21
  22 '''
  23 Rsa2048Sha256GenerateKeys
  24 '''
  25
  26 import os
  27 import sys
  28 import argparse
  29 import subprocess
  30 from Common.BuildVersion import gBUILD_VERSION
  31
  32 #
  33 # Globals for help information
  34 #
  35 __prog__      = 'Rsa2048Sha256GenerateKeys'
  36 __version__   = '%s Version %s' % (__prog__, '0.9 ' + gBUILD_VERSION)
  37 __copyright__ = 'Copyright (c) 2013 - 2014, Intel Corporation. All rights reserved.'
  38 __usage__     = '%s [options]' % (__prog__)
  39
  40
  41 if __name__ == '__main__':
  42   #
  43   # Create command line argument parser object
  44   #
  45   parser = argparse.ArgumentParser(prog=__prog__, version=__version__, usage=__usage__, description=__copyright__, conflict_handler='resolve')
  46   group = parser.add_mutually_exclusive_group(required=True)
  47   group.add_argument("-o", "--output", dest='OutputFile', type=argparse.FileType('wb'), metavar='filename', nargs='*', help="specify the output private key filename in PEM format")
  48   group.add_argument("-i", "--input", dest='InputFile', type=argparse.FileType('rb'), metavar='filename', nargs='*', help="specify the input private key filename in PEM format")
  49   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")
  50   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")
  51   parser.add_argument("-v", "--verbose", dest='Verbose', action="store_true", help="increase output messages")
  52   parser.add_argument("-q", "--quiet", dest='Quiet', action="store_true", help="reduce output messages")
  53   parser.add_argument("--debug", dest='Debug', type=int, metavar='[0-9]', choices=range(0,10), default=0, help="set debug level")
  54
  55   #
  56   # Parse command line arguments
  57   #
  58   args = parser.parse_args()
  59
  60   #
  61   # Generate file path to Open SSL command
  62   #
  63   OpenSslCommand = 'openssl'
  64   try:
  65     OpenSslPath = os.environ['OPENSSL_PATH']
  66     OpenSslCommand = os.path.join(OpenSslPath, OpenSslCommand)
  67   except:
  68     pass
  69
  70   #
  71   # Verify that Open SSL command is available
  72   #
  73   try:
  74     Process = subprocess.Popen('%s version' % (OpenSslCommand), stdout=subprocess.PIPE, stderr=subprocess.PIPE)
  75   except:
  76     print 'ERROR: Open SSL command not available.  Please verify PATH or set OPENSSL_PATH'
  77     sys.exit(1)
  78
  79   Version = Process.communicate()
  80   if Process.returncode <> 0:
  81     print 'ERROR: Open SSL command not available.  Please verify PATH or set OPENSSL_PATH'
  82     sys.exit(Process.returncode)
  83   print Version[0]
  84
  85   args.PemFileName = []
  86
  87   #
  88   # Check for output file argument
  89   #
  90   if args.OutputFile <> None:
  91     for Item in args.OutputFile:
  92       #
  93       # Save PEM filename and close output file
  94       #
  95       args.PemFileName.append(Item.name)
  96       Item.close()
  97
  98       #
  99       # Generate private key and save it to output file in a PEM file format
 100       #
 101       Process = subprocess.Popen('%s genrsa -out %s 2048' % (OpenSslCommand, Item.name), stdout=subprocess.PIPE, stderr=subprocess.PIPE)
 102       Process.communicate()
 103       if Process.returncode <> 0:
 104         print 'ERROR: RSA 2048 key generation failed'
 105         sys.exit(Process.returncode)
 106
 107   #
 108   # Check for input file argument
 109   #
 110   if args.InputFile <> None:
 111     for Item in args.InputFile:
 112       #
 113       # Save PEM filename and close input file
 114       #
 115       args.PemFileName.append(Item.name)
 116       Item.close()
 117
 118   PublicKeyHash = ''
 119   for Item in args.PemFileName:
 120     #
 121     # Extract public key from private key into STDOUT
 122     #
 123     Process = subprocess.Popen('%s rsa -in %s -modulus -noout' % (OpenSslCommand, Item), stdout=subprocess.PIPE, stderr=subprocess.PIPE)
 124     PublicKeyHexString = Process.communicate()[0].split('=')[1].strip()
 125     if Process.returncode <> 0:
 126       print 'ERROR: Unable to extract public key from private key'
 127       sys.exit(Process.returncode)
 128     PublicKey = ''
 129     for Index in range (0, len(PublicKeyHexString), 2):
 130       PublicKey = PublicKey + chr(int(PublicKeyHexString[Index:Index + 2], 16))
 131
 132     #
 133     # Generate SHA 256 hash of RSA 2048 bit public key into STDOUT
 134     #
 135     Process = subprocess.Popen('%s dgst -sha256 -binary' % (OpenSslCommand), stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
 136     Process.stdin.write (PublicKey)
 137     PublicKeyHash = PublicKeyHash + Process.communicate()[0]
 138     if Process.returncode <> 0:
 139       print 'ERROR: Unable to extract SHA 256 hash of public key'
 140       sys.exit(Process.returncode)
 141
 142   #
 143   # Write SHA 256 hash of 2048 bit binary public key to public key hash file
 144   #
 145   try:
 146     args.PublicKeyHashFile.write (PublicKeyHash)
 147     args.PublicKeyHashFile.close ()
 148   except:
 149     pass
 150
 151   #
 152   # Convert public key hash to a C structure string
 153   #
 154   PublicKeyHashC = '{'
 155   for Item in PublicKeyHash:
 156     PublicKeyHashC = PublicKeyHashC + '0x%02x, ' % (ord(Item))
 157   PublicKeyHashC = PublicKeyHashC[:-2] + '}'
 158
 159   #
 160   # Write SHA 256 of 2048 bit binary public key to public key hash C structure file
 161   #
 162   try:
 163     args.PublicKeyHashCFile.write (PublicKeyHashC)
 164     args.PublicKeyHashCFile.close ()
 165   except:
 166     pass
 167
 168   #
 169   # If verbose is enabled display the public key in C structure format
 170   #
 171   if args.Verbose:
 172     print 'PublicKeySha256 = ' + PublicKeyHashC