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Diffstat (limited to 'openssl/apps/dh.c')
| -rw-r--r-- | openssl/apps/dh.c | 352 |
1 files changed, 352 insertions, 0 deletions
diff --git a/openssl/apps/dh.c b/openssl/apps/dh.c new file mode 100644 index 000000000..c4d891e12 --- /dev/null +++ b/openssl/apps/dh.c @@ -0,0 +1,352 @@ +/* apps/dh.c */ +/* obsoleted by dhparam.c */ +/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) + * All rights reserved. + * + * This package is an SSL implementation written + * by Eric Young (eay@cryptsoft.com). + * The implementation was written so as to conform with Netscapes SSL. + * + * This library is free for commercial and non-commercial use as long as + * the following conditions are aheared to. The following conditions + * apply to all code found in this distribution, be it the RC4, RSA, + * lhash, DES, etc., code; not just the SSL code. The SSL documentation + * included with this distribution is covered by the same copyright terms + * except that the holder is Tim Hudson (tjh@cryptsoft.com). + * + * Copyright remains Eric Young's, and as such any Copyright notices in + * the code are not to be removed. + * If this package is used in a product, Eric Young should be given attribution + * as the author of the parts of the library used. + * This can be in the form of a textual message at program startup or + * in documentation (online or textual) provided with the package. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * "This product includes cryptographic software written by + * Eric Young (eay@cryptsoft.com)" + * The word 'cryptographic' can be left out if the rouines from the library + * being used are not cryptographic related :-). + * 4. If you include any Windows specific code (or a derivative thereof) from + * the apps directory (application code) you must include an acknowledgement: + * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" + * + * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * The licence and distribution terms for any publically available version or + * derivative of this code cannot be changed. i.e. this code cannot simply be + * copied and put under another distribution licence + * [including the GNU Public Licence.] + */ + +#include <openssl/opensslconf.h> /* for OPENSSL_NO_DH */ +#ifndef OPENSSL_NO_DH +#include <stdio.h> +#include <stdlib.h> +#include <time.h> +#include <string.h> +#include "apps.h" +#include <openssl/bio.h> +#include <openssl/err.h> +#include <openssl/bn.h> +#include <openssl/dh.h> +#include <openssl/x509.h> +#include <openssl/pem.h> + +#undef PROG +#define PROG dh_main + +/* -inform arg - input format - default PEM (DER or PEM) + * -outform arg - output format - default PEM + * -in arg - input file - default stdin + * -out arg - output file - default stdout + * -check - check the parameters are ok + * -noout + * -text + * -C + */ + +int MAIN(int, char **); + +int MAIN(int argc, char **argv) + { +#ifndef OPENSSL_NO_ENGINE + ENGINE *e = NULL; +#endif + DH *dh=NULL; + int i,badops=0,text=0; + BIO *in=NULL,*out=NULL; + int informat,outformat,check=0,noout=0,C=0,ret=1; + char *infile,*outfile,*prog; +#ifndef OPENSSL_NO_ENGINE + char *engine; +#endif + + apps_startup(); + + if (bio_err == NULL) + if ((bio_err=BIO_new(BIO_s_file())) != NULL) + BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); + + if (!load_config(bio_err, NULL)) + goto end; + +#ifndef OPENSSL_NO_ENGINE + engine=NULL; +#endif + infile=NULL; + outfile=NULL; + informat=FORMAT_PEM; + outformat=FORMAT_PEM; + + prog=argv[0]; + argc--; + argv++; + while (argc >= 1) + { + if (strcmp(*argv,"-inform") == 0) + { + if (--argc < 1) goto bad; + informat=str2fmt(*(++argv)); + } + else if (strcmp(*argv,"-outform") == 0) + { + if (--argc < 1) goto bad; + outformat=str2fmt(*(++argv)); + } + else if (strcmp(*argv,"-in") == 0) + { + if (--argc < 1) goto bad; + infile= *(++argv); + } + else if (strcmp(*argv,"-out") == 0) + { + if (--argc < 1) goto bad; + outfile= *(++argv); + } +#ifndef OPENSSL_NO_ENGINE + else if (strcmp(*argv,"-engine") == 0) + { + if (--argc < 1) goto bad; + engine= *(++argv); + } +#endif + else if (strcmp(*argv,"-check") == 0) + check=1; + else if (strcmp(*argv,"-text") == 0) + text=1; + else if (strcmp(*argv,"-C") == 0) + C=1; + else if (strcmp(*argv,"-noout") == 0) + noout=1; + else + { + BIO_printf(bio_err,"unknown option %s\n",*argv); + badops=1; + break; + } + argc--; + argv++; + } + + if (badops) + { +bad: + BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog); + BIO_printf(bio_err,"where options are\n"); + BIO_printf(bio_err," -inform arg input format - one of DER PEM\n"); + BIO_printf(bio_err," -outform arg output format - one of DER PEM\n"); + BIO_printf(bio_err," -in arg input file\n"); + BIO_printf(bio_err," -out arg output file\n"); + BIO_printf(bio_err," -check check the DH parameters\n"); + BIO_printf(bio_err," -text print a text form of the DH parameters\n"); + BIO_printf(bio_err," -C Output C code\n"); + BIO_printf(bio_err," -noout no output\n"); +#ifndef OPENSSL_NO_ENGINE + BIO_printf(bio_err," -engine e use engine e, possibly a hardware device.\n"); +#endif + goto end; + } + + ERR_load_crypto_strings(); + +#ifndef OPENSSL_NO_ENGINE + e = setup_engine(bio_err, engine, 0); +#endif + + in=BIO_new(BIO_s_file()); + out=BIO_new(BIO_s_file()); + if ((in == NULL) || (out == NULL)) + { + ERR_print_errors(bio_err); + goto end; + } + + if (infile == NULL) + BIO_set_fp(in,stdin,BIO_NOCLOSE); + else + { + if (BIO_read_filename(in,infile) <= 0) + { + perror(infile); + goto end; + } + } + if (outfile == NULL) + { + BIO_set_fp(out,stdout,BIO_NOCLOSE); +#ifdef OPENSSL_SYS_VMS + { + BIO *tmpbio = BIO_new(BIO_f_linebuffer()); + out = BIO_push(tmpbio, out); + } +#endif + } + else + { + if (BIO_write_filename(out,outfile) <= 0) + { + perror(outfile); + goto end; + } + } + + if (informat == FORMAT_ASN1) + dh=d2i_DHparams_bio(in,NULL); + else if (informat == FORMAT_PEM) + dh=PEM_read_bio_DHparams(in,NULL,NULL,NULL); + else + { + BIO_printf(bio_err,"bad input format specified\n"); + goto end; + } + if (dh == NULL) + { + BIO_printf(bio_err,"unable to load DH parameters\n"); + ERR_print_errors(bio_err); + goto end; + } + + + + if (text) + { + DHparams_print(out,dh); +#ifdef undef + printf("p="); + BN_print(stdout,dh->p); + printf("\ng="); + BN_print(stdout,dh->g); + printf("\n"); + if (dh->length != 0) + printf("recommended private length=%ld\n",dh->length); +#endif + } + + if (check) + { + if (!DH_check(dh,&i)) + { + ERR_print_errors(bio_err); + goto end; + } + if (i & DH_CHECK_P_NOT_PRIME) + printf("p value is not prime\n"); + if (i & DH_CHECK_P_NOT_SAFE_PRIME) + printf("p value is not a safe prime\n"); + if (i & DH_UNABLE_TO_CHECK_GENERATOR) + printf("unable to check the generator value\n"); + if (i & DH_NOT_SUITABLE_GENERATOR) + printf("the g value is not a generator\n"); + if (i == 0) + printf("DH parameters appear to be ok.\n"); + } + if (C) + { + unsigned char *data; + int len,l,bits; + + len=BN_num_bytes(dh->p); + bits=BN_num_bits(dh->p); + data=(unsigned char *)OPENSSL_malloc(len); + if (data == NULL) + { + perror("OPENSSL_malloc"); + goto end; + } + l=BN_bn2bin(dh->p,data); + printf("static unsigned char dh%d_p[]={",bits); + for (i=0; i<l; i++) + { + if ((i%12) == 0) printf("\n\t"); + printf("0x%02X,",data[i]); + } + printf("\n\t};\n"); + + l=BN_bn2bin(dh->g,data); + printf("static unsigned char dh%d_g[]={",bits); + for (i=0; i<l; i++) + { + if ((i%12) == 0) printf("\n\t"); + printf("0x%02X,",data[i]); + } + printf("\n\t};\n\n"); + + printf("DH *get_dh%d()\n\t{\n",bits); + printf("\tDH *dh;\n\n"); + printf("\tif ((dh=DH_new()) == NULL) return(NULL);\n"); + printf("\tdh->p=BN_bin2bn(dh%d_p,sizeof(dh%d_p),NULL);\n", + bits,bits); + printf("\tdh->g=BN_bin2bn(dh%d_g,sizeof(dh%d_g),NULL);\n", + bits,bits); + printf("\tif ((dh->p == NULL) || (dh->g == NULL))\n"); + printf("\t\treturn(NULL);\n"); + printf("\treturn(dh);\n\t}\n"); + OPENSSL_free(data); + } + + + if (!noout) + { + if (outformat == FORMAT_ASN1) + i=i2d_DHparams_bio(out,dh); + else if (outformat == FORMAT_PEM) + i=PEM_write_bio_DHparams(out,dh); + else { + BIO_printf(bio_err,"bad output format specified for outfile\n"); + goto end; + } + if (!i) + { + BIO_printf(bio_err,"unable to write DH parameters\n"); + ERR_print_errors(bio_err); + goto end; + } + } + ret=0; +end: + if (in != NULL) BIO_free(in); + if (out != NULL) BIO_free_all(out); + if (dh != NULL) DH_free(dh); + apps_shutdown(); + OPENSSL_EXIT(ret); + } +#endif |