src/crypt_chain.cc

   1 /*
   2     Copyright (C) 2013 Carl Hetherington <cth@carlh.net>
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #include <fstream>
  21 #include <sstream>
  22 #include <boost/filesystem.hpp>
  23 #include <boost/algorithm/string.hpp>
  24 #include "crypt_chain.h"
  25 #include "exceptions.h"
  26
  27 using std::string;
  28 using std::ofstream;
  29 using std::ifstream;
  30 using std::stringstream;
  31 using std::cout;
  32
  33 static void command (char const * c)
  34 {
  35         int const r = system (c);
  36         if (WEXITSTATUS (r)) {
  37                 stringstream s;
  38                 s << "error in " << c << "\n";
  39                 throw libdcp::MiscError (s.str());
  40         }
  41 }
  42
  43 void
  44 libdcp::make_crypt_chain (boost::filesystem::path directory)
  45 {
  46         boost::filesystem::current_path (directory);
  47         command ("openssl genrsa -out ca.key 2048");
  48
  49         {
  50                 ofstream f ("ca.cnf");
  51                 f << "[ req ]\n"
  52                   << "distinguished_name = req_distinguished_name\n"
  53                   << "x509_extensions   = v3_ca\n"
  54                   << "[ v3_ca ]\n"
  55                   << "basicConstraints = critical,CA:true,pathlen:3\n"
  56                   << "keyUsage = keyCertSign,cRLSign\n"
  57                   << "subjectKeyIdentifier = hash\n"
  58                   << "authorityKeyIdentifier = keyid:always,issuer:always\n"
  59                   << "[ req_distinguished_name ]\n"
  60                   << "O = Unique organization name\n"
  61                   << "OU = Organization unit\n"
  62                   << "CN = Entity and dnQualifier\n";
  63         }
  64
  65         command ("openssl rsa -outform PEM -pubout -in ca.key | openssl base64 -d | dd bs=1 skip=24 2>/dev/null | openssl sha1 -binary | openssl base64 > ca_dnq");
  66
  67         string ca_dnq;
  68
  69         {
  70                 ifstream f ("ca_dnq");
  71                 getline (f, ca_dnq);
  72                 /* XXX: is this right? */
  73                 boost::replace_all (ca_dnq, "/", "\\\\/");
  74         }
  75
  76         string const ca_subject = "/O=example.org/OU=example.org/CN=.smpte-430-2.ROOT.NOT_FOR_PRODUCTION/dnQualifier=" + ca_dnq;
  77
  78         {
  79                 stringstream c;
  80                 c << "openssl req -new -x509 -sha256 -config ca.cnf -days 3650 -set_serial 5 -subj " << ca_subject << " -key ca.key -outform PEM -out ca.self-signed.pem";
  81                 command (c.str().c_str());
  82         }
  83
  84         command ("openssl genrsa -out intermediate.key 2048");
  85
  86         {
  87                 ofstream f ("intermediate.cnf");
  88                 f << "[ default ]\n"
  89                   << "distinguished_name = req_distinguished_name\n"
  90                   << "x509_extensions = v3_ca\n"
  91                   << "[ v3_ca ]\n"
  92                   << "basicConstraints = critical,CA:true,pathlen:2\n"
  93                   << "keyUsage = keyCertSign,cRLSign\n"
  94                   << "subjectKeyIdentifier = hash\n"
  95                   << "authorityKeyIdentifier = keyid:always,issuer:always\n"
  96                   << "[ req_distinguished_name ]\n"
  97                   << "O = Unique organization name\n"
  98                   << "OU = Organization unit\n"
  99                   << "CN = Entity and dnQualifier\n";
 100         }
 101
 102         command ("openssl rsa -outform PEM -pubout -in intermediate.key | openssl base64 -d | dd bs=1 skip=24 2>/dev/null | openssl sha1 -binary | openssl base64 > inter_dnq");
 103
 104         string inter_dnq;
 105
 106         {
 107                 ifstream f ("inter_dnq");
 108                 getline (f, inter_dnq);
 109                 boost::replace_all (inter_dnq, "/", "\\\\/");
 110         }
 111
 112         string const inter_subject = "/O=example.org/OU=example.org/CN=.smpte-430-2.INTERMEDIATE.NOT_FOR_PRODUCTION/dnQualifier=" + inter_dnq;
 113
 114         {
 115                 stringstream s;
 116                 s << "openssl req -new -config intermediate.cnf -days 3649 -subj " << inter_subject << " -key intermediate.key -out intermediate.csr";
 117                 command (s.str().c_str());
 118         }
 119
 120
 121         command ("openssl x509 -req -sha256 -days 3649 -CA ca.self-signed.pem -CAkey ca.key -set_serial 6 -in intermediate.csr -extfile intermediate.cnf -extensions v3_ca -out intermediate.signed.pem");
 122
 123         command ("openssl genrsa -out leaf.key 2048");
 124
 125         {
 126                 ofstream f ("leaf.cnf");
 127                 f << "[ default ]\n"
 128                   << "distinguished_name = req_distinguished_name\n"
 129                   << "x509_extensions   = v3_ca\n"
 130                   << "[ v3_ca ]\n"
 131                   << "basicConstraints = critical,CA:false\n"
 132                   << "keyUsage = digitalSignature,keyEncipherment\n"
 133                   << "subjectKeyIdentifier = hash\n"
 134                   << "authorityKeyIdentifier = keyid,issuer:always\n"
 135                   << "[ req_distinguished_name ]\n"
 136                   << "O = Unique organization name\n"
 137                   << "OU = Organization unit\n"
 138                   << "CN = Entity and dnQualifier\n";
 139         }
 140
 141         command ("openssl rsa -outform PEM -pubout -in leaf.key | openssl base64 -d | dd bs=1 skip=24 2>/dev/null | openssl sha1 -binary | openssl base64 > leaf_dnq");
 142
 143         string leaf_dnq;
 144
 145         {
 146                 ifstream f ("leaf_dnq");
 147                 getline (f, leaf_dnq);
 148                 boost::replace_all (leaf_dnq, "/", "\\\\/");
 149         }
 150
 151         string const leaf_subject = "/O=example.org/OU=example.org/CN=CS.smpte-430-2.LEAF.NOT_FOR_PRODUCTION/dnQualifier=" + leaf_dnq;
 152
 153         {
 154                 stringstream s;
 155                 s << "openssl req -new -config leaf.cnf -days 3648 -subj " << leaf_subject << " -key leaf.key -outform PEM -out leaf.csr";
 156                 command (s.str().c_str());
 157         }
 158
 159         command ("openssl x509 -req -sha256 -days 3648 -CA intermediate.signed.pem -CAkey intermediate.key -set_serial 7 -in leaf.csr -extfile leaf.cnf -extensions v3_ca -out leaf.signed.pem");
 160 }