/* g10.c - The G10 re-install utility * Copyright (c) 1997 by Werner Koch (dd9jn) * * This file is part of G10. * * G10 is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * G10 is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA */ #include #include #include #include "packet.h" #include "iobuf.h" #include "memory.h" #include "util.h" #include "main.h" #include "options.h" #include "keydb.h" #include "mpi.h" #include "cipher.h" #include "filter.h" static void do_test(void); const char * strusage( int level ) { const char *p; switch( level ) { case 10: case 0: p = "g10 - v" VERSION "; " "Copyright 1997 Werner Koch (dd9jn)\n" ; break; case 13: p = "g10"; break; case 14: p = VERSION; break; case 1: case 11: p = "Usage: g10 [options] [files] (-h for help)"; break; case 2: case 12: p = "Syntax: g10 [options] [files]\n" "sign, check, encrypt or decrypt\n" "default operation depends on the input data\n"; break; case 26: p = "Please report bugs to .\n"; break; case 30: p = "" #ifndef HAVE_ZLIB_H " NOTE: This version is compiled without ZLIB support;\n" " you are not able to process compresssed data!\n" #endif #ifdef HAVE_RSA_CIPHER "WARNING: This version has RSA support! Your are not allowed to\n" " use it inside the Unites States until Sep 30, 2000!\n" #endif ; break; default: p = default_strusage(level); } return p; } static void set_debug(void) { if( opt.debug & DBG_MEMORY_VALUE ) memory_debug_mode = 1; if( opt.debug & DBG_MEMSTAT_VALUE ) memory_stat_debug_mode = 1; if( opt.debug & DBG_MPI_VALUE ) mpi_debug_mode = 1; if( opt.debug & DBG_CIPHER_VALUE ) cipher_debug_mode = 1; if( opt.debug & DBG_IOBUF_VALUE ) iobuf_debug_mode = 1; } int main( int argc, char **argv ) { static ARGPARSE_OPTS opts[] = { { 'a', "armor", 0, "create ascii armored output"}, { 'v', "verbose", 0, "verbose" }, { 'z', NULL, 1, "set compress level (0 disables)" }, { 'b', "batch", 0, "batch mode: never ask" }, { 'n', "dry-run", 0, "don't make any changes" }, { 'c', "symmetric", 0, "do only a symmetric encryption" }, { 'o', "output", 2, "use as output file" }, { 501, "yes", 0, "assume yes on most questions"}, { 502, "no", 0, "assume no on most questions"}, { 503, "gen-key", 0, "generate a new key pair" }, { 504, "add-key", 0, "add key to the public keyring" }, { 505, "delete-key",0, "remove key from public keyring" }, { 506, "sign-key" ,0, "make a signature on a key in the keyring" }, { 507, "store", 0, "store only" }, { 508, "check-key" ,0, "check signatures on a key in the keyring" }, { 509, "keyring" ,2, "add this keyring to the list of keyrings" }, { 's', "sign", 0, "make a signature"}, { 'e', "encrypt", 0, "encrypt data" }, { 'd', "decrypt", 0, "decrypt data (default)" }, { 'c', "check", 0, "check a signature (default)" }, { 'l', "local-user",2, "use this user-id to sign or decrypt" }, { 'r', "remote-user", 2, "use this user-id for encryption" }, { 510, "debug" ,4|16, "set debugging flags" }, { 511, "debug-all" ,0, "enable full debugging"}, { 512, "cache-all" ,0, "hold everything in memory"}, { 513, "gen-prime" , 1, "\rgenerate a prime of length n" }, { 514, "test" , 0, "\rdevelopment usage" }, {0} }; ARGPARSE_ARGS pargs = { &argc, &argv, 0 }; IOBUF a; int rc; enum { aNull, aSym, aStore, aEncr, aPrimegen, aKeygen, aSign, aSignEncr, aTest, } action = aNull; const char *fname, *fname_print; STRLIST sl, remusr= NULL, locusr=NULL; int nrings=0; armor_filter_context_t afx; const char *s; opt.compress = -1; /* defaults to default compression level */ while( arg_parse( &pargs, opts) ) { switch( pargs.r_opt ) { case 'v': opt.verbose++; break; case 'z': opt.compress = pargs.r.ret_int; break; case 'a': opt.armor = 1; break; case 'b': opt.batch = 1; break; case 'c': action = aSym; break; case 'o': opt.outfile = pargs.r.ret_str; if( opt.outfile[0] == '-' && !opt.outfile[1] ) opt.outfile_is_stdout = 1; break; case 'e': action = action == aSign? aSignEncr : aEncr; break; case 's': action = action == aEncr? aSignEncr : aSign; break; case 'l': /* store the local users */ sl = m_alloc( sizeof *sl + strlen(pargs.r.ret_str)); strcpy(sl->d, pargs.r.ret_str); sl->next = locusr; locusr = sl; break; case 'r': /* store the remote users */ sl = m_alloc( sizeof *sl + strlen(pargs.r.ret_str)); strcpy(sl->d, pargs.r.ret_str); sl->next = remusr; remusr = sl; break; case 501: opt.answer_yes = 1; break; case 502: opt.answer_no = 1; break; case 503: action = aKeygen; break; case 507: action = aStore; break; case 508: opt.check_sigs = 1; break; case 509: add_keyring(pargs.r.ret_str); nrings++; break; case 510: opt.debug |= pargs.r.ret_ulong; break; case 511: opt.debug = ~0; break; case 512: opt.cache_all = 1; break; case 513: action = aPrimegen; break; case 514: action = aTest; break; default : pargs.err = 2; break; } } set_debug(); if( opt.verbose > 1 ) set_packet_list_mode(1); if( !opt.batch && *(s=strusage(10)) ) fputs(s, stderr); if( !opt.batch && *(s=strusage(30)) ) fputs(s, stderr); if( !nrings ) { /* add default rings */ add_keyring("../keys/ring.pgp"); add_keyring("../keys/pubring.g10"); } if( argc ) { fname_print = fname = *argv; } else { fname_print = "[stdin]"; fname = NULL; } switch( action ) { case aStore: /* only store the file */ if( argc > 1 ) usage(1); if( (rc = encode_store(fname)) ) log_error("encode_store('%s'): %s\n", fname_print, g10_errstr(rc) ); break; case aSym: /* encrypt the given file only with the symmetric cipher */ if( argc > 1 ) usage(1); if( (rc = encode_symmetric(fname)) ) log_error("encode_symmetric('%s'): %s\n", fname_print, g10_errstr(rc) ); break; case aEncr: /* encrypt the given file */ if( argc > 1 ) usage(1); if( (rc = encode_crypt(fname,remusr)) ) log_error("encode_crypt('%s'): %s\n", fname_print, g10_errstr(rc) ); break; case aSign: /* sign the given file */ if( argc > 1 ) usage(1); if( (rc = sign_file(fname, 0, locusr)) ) log_error("sign_file('%s'): %s\n", fname_print, g10_errstr(rc) ); break; case aSignEncr: /* sign and encrypt the given file */ usage(1); /* FIXME */ break; case aPrimegen: if( argc ) usage(1); mpi_print( stdout, generate_public_prime( pargs.r.ret_int ), 1); putchar('\n'); break; case aKeygen: /* generate a key (interactive) */ if( argc ) usage(1); generate_keypair(); break; case aTest: do_test(); break; default: if( argc > 1 ) usage(1); if( !(a = iobuf_open(fname)) ) log_fatal("can't open '%s'\n", fname_print); /* push the armor filter, so it can peek at the input data */ memset( &afx, 0, sizeof afx); iobuf_push_filter( a, armor_filter, &afx ); proc_packets( a ); iobuf_close(a); break; } /* cleanup */ FREE_STRLIST(remusr); FREE_STRLIST(locusr); return 0; } static void do_test() { MPI t = mpi_alloc( 50 ); MPI m = mpi_alloc( 50 ); MPI a = mpi_alloc( 50 ); MPI b = mpi_alloc( 50 ); MPI p = mpi_alloc( 50 ); MPI x = mpi_alloc( 50 ); mpi_fromstr(a, "0xef45678343589854354a4545545454554545455" "aaaaaaaaaaaaa44444fffdecb33434343443331" ); mpi_fromstr(b, "0x8765765589854354a4545545454554545455" "aaaaaaa466577778decb36666343443331" ); mpi_fromstr(p, "0xcccddd456700000012222222222222254545455" "aaaaaaaaaaaaa44444fffdecb33434343443337" ); mpi_fromstr(x, "0x100004545543656456656545545454554545455" "aaa33aaaa465456544fffdecb33434bbbac3331" ); /* output = b/(a^x) mod p */ log_debug("powm ..\n"); mpi_powm( t, a, x, p ); log_debug("invm ..\n"); mpi_invm( t, t, p ); log_debug("mulm ..\n"); mpi_mulm( m, b, t, p ); m_check(NULL); }