prime.c revision 238405
1255570Strasz/* ==================================================================== 2255570Strasz * Copyright (c) 2004 The OpenSSL Project. All rights reserved. 3255570Strasz * 4255570Strasz * Redistribution and use in source and binary forms, with or without 5255570Strasz * modification, are permitted provided that the following conditions 6255570Strasz * are met: 7255570Strasz * 8255570Strasz * 1. Redistributions of source code must retain the above copyright 9255570Strasz * notice, this list of conditions and the following disclaimer. 10255570Strasz * 11255570Strasz * 2. Redistributions in binary form must reproduce the above copyright 12270970Sngie * notice, this list of conditions and the following disclaimer in 13270970Sngie * the documentation and/or other materials provided with the 14255570Strasz * distribution. 15255570Strasz * 16255570Strasz * 3. All advertising materials mentioning features or use of this 17255570Strasz * software must display the following acknowledgment: 18255570Strasz * "This product includes software developed by the OpenSSL Project 19255570Strasz * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 20255570Strasz * 21255570Strasz * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 22 * endorse or promote products derived from this software without 23 * prior written permission. For written permission, please contact 24 * openssl-core@openssl.org. 25 * 26 * 5. Products derived from this software may not be called "OpenSSL" 27 * nor may "OpenSSL" appear in their names without prior written 28 * permission of the OpenSSL Project. 29 * 30 * 6. Redistributions of any form whatsoever must retain the following 31 * acknowledgment: 32 * "This product includes software developed by the OpenSSL Project 33 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 34 * 35 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 36 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 37 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 38 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 39 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 40 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 41 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 42 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 43 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 44 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 45 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 46 * OF THE POSSIBILITY OF SUCH DAMAGE. 47 * 48 */ 49 50#include <string.h> 51 52#include "apps.h" 53#include <openssl/bn.h> 54 55 56#undef PROG 57#define PROG prime_main 58 59int MAIN(int, char **); 60 61int MAIN(int argc, char **argv) 62 { 63 int hex=0; 64 int checks=20; 65 int generate=0; 66 int bits=0; 67 int safe=0; 68 BIGNUM *bn=NULL; 69 BIO *bio_out; 70 71 apps_startup(); 72 73 if (bio_err == NULL) 74 if ((bio_err=BIO_new(BIO_s_file())) != NULL) 75 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 76 77 --argc; 78 ++argv; 79 while (argc >= 1 && **argv == '-') 80 { 81 if(!strcmp(*argv,"-hex")) 82 hex=1; 83 else if(!strcmp(*argv,"-generate")) 84 generate=1; 85 else if(!strcmp(*argv,"-bits")) 86 if(--argc < 1) 87 goto bad; 88 else 89 bits=atoi(*++argv); 90 else if(!strcmp(*argv,"-safe")) 91 safe=1; 92 else if(!strcmp(*argv,"-checks")) 93 if(--argc < 1) 94 goto bad; 95 else 96 checks=atoi(*++argv); 97 else 98 { 99 BIO_printf(bio_err,"Unknown option '%s'\n",*argv); 100 goto bad; 101 } 102 --argc; 103 ++argv; 104 } 105 106 if (argv[0] == NULL && !generate) 107 { 108 BIO_printf(bio_err,"No prime specified\n"); 109 goto bad; 110 } 111 112 if ((bio_out=BIO_new(BIO_s_file())) != NULL) 113 { 114 BIO_set_fp(bio_out,stdout,BIO_NOCLOSE); 115#ifdef OPENSSL_SYS_VMS 116 { 117 BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 118 bio_out = BIO_push(tmpbio, bio_out); 119 } 120#endif 121 } 122 123 if(generate) 124 { 125 char *s; 126 127 if(!bits) 128 { 129 BIO_printf(bio_err,"Specifiy the number of bits.\n"); 130 return 1; 131 } 132 bn=BN_new(); 133 BN_generate_prime_ex(bn,bits,safe,NULL,NULL,NULL); 134 s=hex ? BN_bn2hex(bn) : BN_bn2dec(bn); 135 BIO_printf(bio_out,"%s\n",s); 136 OPENSSL_free(s); 137 } 138 else 139 { 140 if(hex) 141 BN_hex2bn(&bn,argv[0]); 142 else 143 BN_dec2bn(&bn,argv[0]); 144 145 BN_print(bio_out,bn); 146 BIO_printf(bio_out," is %sprime\n", 147 BN_is_prime_ex(bn,checks,NULL,NULL) ? "" : "not "); 148 } 149 150 BN_free(bn); 151 BIO_free_all(bio_out); 152 153 return 0; 154 155 bad: 156 BIO_printf(bio_err,"options are\n"); 157 BIO_printf(bio_err,"%-14s hex\n","-hex"); 158 BIO_printf(bio_err,"%-14s number of checks\n","-checks <n>"); 159 return 1; 160 } 161