X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=apps%2Fdsaparam.c;h=70135a694cdade608dcb72e0baf10dc232a1037c;hp=4196413217f0e4499528589e06ecdcff23c71265;hb=80c455d5ae405e855391e298a2bf8a24629dd95d;hpb=c04f8cf44a3b204b82f5f1f5d1ad9dbc738459f1

diff --git a/apps/dsaparam.c b/apps/dsaparam.c
index 4196413217..70135a694c 100644
--- a/apps/dsaparam.c
+++ b/apps/dsaparam.c
@@ -1,389 +1,258 @@
-/* apps/dsaparam.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
+/*
+ * Copyright 1995-2018 The OpenSSL Project Authors. 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.]
+ * Licensed under the Apache License 2.0 (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
  */
 
-#ifndef OPENSSL_NO_DSA
-#include <assert.h>
-#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/dsa.h>
-#include <openssl/x509.h>
-#include <openssl/pem.h>
-#include <openssl/engine.h>
+#include <openssl/opensslconf.h>
+#ifdef OPENSSL_NO_DSA
+NON_EMPTY_TRANSLATION_UNIT
+#else
 
-#undef PROG
-#define PROG	dsaparam_main
+# include <stdio.h>
+# include <stdlib.h>
+# include <time.h>
+# include <string.h>
+# include "apps.h"
+# include "progs.h"
+# include <openssl/bio.h>
+# include <openssl/err.h>
+# include <openssl/bn.h>
+# include <openssl/dsa.h>
+# include <openssl/x509.h>
+# include <openssl/pem.h>
 
-/* -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
- * -noout
- * -text
- * -C
- * -noout
- * -genkey
- */
-
-static void MS_CALLBACK dsa_cb(int p, int n, void *arg);
-
-int MAIN(int, char **);
+static int dsa_cb(int p, int n, BN_GENCB *cb);
 
-int MAIN(int argc, char **argv)
-	{
-	ENGINE *e = NULL;
-	DSA *dsa=NULL;
-	int i,badops=0,text=0;
-	BIO *in=NULL,*out=NULL;
-	int informat,outformat,noout=0,C=0,ret=1;
-	char *infile,*outfile,*prog,*inrand=NULL;
-	int numbits= -1,num,genkey=0;
-	int need_rand=0;
-	char *engine=NULL;
+typedef enum OPTION_choice {
+    OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
+    OPT_INFORM, OPT_OUTFORM, OPT_IN, OPT_OUT, OPT_TEXT, OPT_C,
+    OPT_NOOUT, OPT_GENKEY, OPT_ENGINE, OPT_R_ENUM
+} OPTION_CHOICE;
 
-	apps_startup();
+const OPTIONS dsaparam_options[] = {
+    {"help", OPT_HELP, '-', "Display this summary"},
+    {"inform", OPT_INFORM, 'F', "Input format - DER or PEM"},
+    {"in", OPT_IN, '<', "Input file"},
+    {"outform", OPT_OUTFORM, 'F', "Output format - DER or PEM"},
+    {"out", OPT_OUT, '>', "Output file"},
+    {"text", OPT_TEXT, '-', "Print as text"},
+    {"C", OPT_C, '-', "Output C code"},
+    {"noout", OPT_NOOUT, '-', "No output"},
+    {"genkey", OPT_GENKEY, '-', "Generate a DSA key"},
+    OPT_R_OPTIONS,
+# ifndef OPENSSL_NO_ENGINE
+    {"engine", OPT_ENGINE, 's', "Use engine e, possibly a hardware device"},
+# endif
+    {NULL}
+};
 
-	if (bio_err == NULL)
-		if ((bio_err=BIO_new(BIO_s_file())) != NULL)
-			BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
+int dsaparam_main(int argc, char **argv)
+{
+    ENGINE *e = NULL;
+    DSA *dsa = NULL;
+    BIO *in = NULL, *out = NULL;
+    BN_GENCB *cb = NULL;
+    int numbits = -1, num = 0, genkey = 0;
+    int informat = FORMAT_PEM, outformat = FORMAT_PEM, noout = 0, C = 0;
+    int ret = 1, i, text = 0, private = 0;
+    char *infile = NULL, *outfile = NULL, *prog;
+    OPTION_CHOICE o;
 
-	infile=NULL;
-	outfile=NULL;
-	informat=FORMAT_PEM;
-	outformat=FORMAT_PEM;
+    prog = opt_init(argc, argv, dsaparam_options);
+    while ((o = opt_next()) != OPT_EOF) {
+        switch (o) {
+        case OPT_EOF:
+        case OPT_ERR:
+ opthelp:
+            BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
+            goto end;
+        case OPT_HELP:
+            opt_help(dsaparam_options);
+            ret = 0;
+            goto end;
+        case OPT_INFORM:
+            if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
+                goto opthelp;
+            break;
+        case OPT_IN:
+            infile = opt_arg();
+            break;
+        case OPT_OUTFORM:
+            if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
+                goto opthelp;
+            break;
+        case OPT_OUT:
+            outfile = opt_arg();
+            break;
+        case OPT_ENGINE:
+            e = setup_engine(opt_arg(), 0);
+            break;
+        case OPT_TEXT:
+            text = 1;
+            break;
+        case OPT_C:
+            C = 1;
+            break;
+        case OPT_GENKEY:
+            genkey = 1;
+            break;
+        case OPT_R_CASES:
+            if (!opt_rand(o))
+                goto end;
+            break;
+        case OPT_NOOUT:
+            noout = 1;
+            break;
+        }
+    }
+    argc = opt_num_rest();
+    argv = opt_rest();
 
-	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);
-			}
-		else if(strcmp(*argv, "-engine") == 0)
-			{
-			if (--argc < 1) goto bad;
-			engine = *(++argv);
-			}
-		else if (strcmp(*argv,"-text") == 0)
-			text=1;
-		else if (strcmp(*argv,"-C") == 0)
-			C=1;
-		else if (strcmp(*argv,"-genkey") == 0)
-			{
-			genkey=1;
-			need_rand=1;
-			}
-		else if (strcmp(*argv,"-rand") == 0)
-			{
-			if (--argc < 1) goto bad;
-			inrand= *(++argv);
-			need_rand=1;
-			}
-		else if (strcmp(*argv,"-noout") == 0)
-			noout=1;
-		else if (sscanf(*argv,"%d",&num) == 1)
-			{
-			/* generate a key */
-			numbits=num;
-			need_rand=1;
-			}
-		else
-			{
-			BIO_printf(bio_err,"unknown option %s\n",*argv);
-			badops=1;
-			break;
-			}
-		argc--;
-		argv++;
-		}
+    if (argc == 1) {
+        if (!opt_int(argv[0], &num) || num < 0)
+            goto end;
+        /* generate a key */
+        numbits = num;
+    }
+    private = genkey ? 1 : 0;
 
-	if (badops)
-		{
-bad:
-		BIO_printf(bio_err,"%s [options] [bits] <infile >outfile\n",prog);
-		BIO_printf(bio_err,"where options are\n");
-		BIO_printf(bio_err," -inform arg   input format - DER or PEM\n");
-		BIO_printf(bio_err," -outform arg  output format - DER or PEM\n");
-		BIO_printf(bio_err," -in arg       input file\n");
-		BIO_printf(bio_err," -out arg      output file\n");
-		BIO_printf(bio_err," -text         print the key in text\n");
-		BIO_printf(bio_err," -C            Output C code\n");
-		BIO_printf(bio_err," -noout        no output\n");
-		BIO_printf(bio_err," -rand         files to use for random number input\n");
-		BIO_printf(bio_err," -engine e     use engine e, possibly a hardware device.\n");
-		BIO_printf(bio_err," number        number of bits to use for generating private key\n");
-		goto end;
-		}
+    in = bio_open_default(infile, 'r', informat);
+    if (in == NULL)
+        goto end;
+    out = bio_open_owner(outfile, outformat, private);
+    if (out == NULL)
+        goto end;
 
-	ERR_load_crypto_strings();
+    if (numbits > 0) {
+        if (numbits > OPENSSL_DSA_MAX_MODULUS_BITS)
+            BIO_printf(bio_err,
+                       "Warning: It is not recommended to use more than %d bit for DSA keys.\n"
+                       "         Your key size is %d! Larger key size may behave not as expected.\n",
+                       OPENSSL_DSA_MAX_MODULUS_BITS, numbits);
 
-	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;
-			}
-		}
+        cb = BN_GENCB_new();
+        if (cb == NULL) {
+            BIO_printf(bio_err, "Error allocating BN_GENCB object\n");
+            goto end;
+        }
+        BN_GENCB_set(cb, dsa_cb, bio_err);
+        dsa = DSA_new();
+        if (dsa == NULL) {
+            BIO_printf(bio_err, "Error allocating DSA object\n");
+            goto end;
+        }
+        BIO_printf(bio_err, "Generating DSA parameters, %d bit long prime\n",
+                   num);
+        BIO_printf(bio_err, "This could take some time\n");
+        if (!DSA_generate_parameters_ex(dsa, num, NULL, 0, NULL, NULL, cb)) {
+            ERR_print_errors(bio_err);
+            BIO_printf(bio_err, "Error, DSA key generation failed\n");
+            goto end;
+        }
+    } else if (informat == FORMAT_ASN1) {
+        dsa = d2i_DSAparams_bio(in, NULL);
+    } else {
+        dsa = PEM_read_bio_DSAparams(in, NULL, NULL, NULL);
+    }
+    if (dsa == NULL) {
+        BIO_printf(bio_err, "unable to load DSA parameters\n");
+        ERR_print_errors(bio_err);
+        goto end;
+    }
 
-        e = setup_engine(bio_err, engine, 0);
+    if (text) {
+        DSAparams_print(out, dsa);
+    }
 
-	if (need_rand)
-		{
-		app_RAND_load_file(NULL, bio_err, (inrand != NULL));
-		if (inrand != NULL)
-			BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
-				app_RAND_load_files(inrand));
-		}
+    if (C) {
+        const BIGNUM *p = NULL, *q = NULL, *g = NULL;
+        unsigned char *data;
+        int len, bits_p;
 
-	if (numbits > 0)
-		{
-		assert(need_rand);
-		BIO_printf(bio_err,"Generating DSA parameters, %d bit long prime\n",num);
-	        BIO_printf(bio_err,"This could take some time\n");
-	        dsa=DSA_generate_parameters(num,NULL,0,NULL,NULL, dsa_cb,bio_err);
-		}
-	else if	(informat == FORMAT_ASN1)
-		dsa=d2i_DSAparams_bio(in,NULL);
-	else if (informat == FORMAT_PEM)
-		dsa=PEM_read_bio_DSAparams(in,NULL,NULL,NULL);
-	else
-		{
-		BIO_printf(bio_err,"bad input format specified\n");
-		goto end;
-		}
-	if (dsa == NULL)
-		{
-		BIO_printf(bio_err,"unable to load DSA parameters\n");
-		ERR_print_errors(bio_err);
-		goto end;
-		}
+        DSA_get0_pqg(dsa, &p, &q, &g);
+        len = BN_num_bytes(p);
+        bits_p = BN_num_bits(p);
 
-	if (text)
-		{
-		DSAparams_print(out,dsa);
-		}
-	
-	if (C)
-		{
-		unsigned char *data;
-		int l,len,bits_p,bits_q,bits_g;
+        data = app_malloc(len + 20, "BN space");
 
-		len=BN_num_bytes(dsa->p);
-		bits_p=BN_num_bits(dsa->p);
-		bits_q=BN_num_bits(dsa->q);
-		bits_g=BN_num_bits(dsa->g);
-		data=(unsigned char *)OPENSSL_malloc(len+20);
-		if (data == NULL)
-			{
-			perror("OPENSSL_malloc");
-			goto end;
-			}
-		l=BN_bn2bin(dsa->p,data);
-		printf("static unsigned char dsa%d_p[]={",bits_p);
-		for (i=0; i<l; i++)
-			{
-			if ((i%12) == 0) printf("\n\t");
-			printf("0x%02X,",data[i]);
-			}
-		printf("\n\t};\n");
+        BIO_printf(bio_out, "static DSA *get_dsa%d(void)\n{\n", bits_p);
+        print_bignum_var(bio_out, p, "dsap", bits_p, data);
+        print_bignum_var(bio_out, q, "dsaq", bits_p, data);
+        print_bignum_var(bio_out, g, "dsag", bits_p, data);
+        BIO_printf(bio_out, "    DSA *dsa = DSA_new();\n"
+                            "    BIGNUM *p, *q, *g;\n"
+                            "\n");
+        BIO_printf(bio_out, "    if (dsa == NULL)\n"
+                            "        return NULL;\n");
+        BIO_printf(bio_out, "    if (!DSA_set0_pqg(dsa, p = BN_bin2bn(dsap_%d, sizeof(dsap_%d), NULL),\n",
+                   bits_p, bits_p);
+        BIO_printf(bio_out, "                           q = BN_bin2bn(dsaq_%d, sizeof(dsaq_%d), NULL),\n",
+                   bits_p, bits_p);
+        BIO_printf(bio_out, "                           g = BN_bin2bn(dsag_%d, sizeof(dsag_%d), NULL))) {\n",
+                   bits_p, bits_p);
+        BIO_printf(bio_out, "        DSA_free(dsa);\n"
+                            "        BN_free(p);\n"
+                            "        BN_free(q);\n"
+                            "        BN_free(g);\n"
+                            "        return NULL;\n"
+                            "    }\n"
+                            "    return dsa;\n}\n");
+        OPENSSL_free(data);
+    }
 
-		l=BN_bn2bin(dsa->q,data);
-		printf("static unsigned char dsa%d_q[]={",bits_p);
-		for (i=0; i<l; i++)
-			{
-			if ((i%12) == 0) printf("\n\t");
-			printf("0x%02X,",data[i]);
-			}
-		printf("\n\t};\n");
+    if (outformat == FORMAT_ASN1 && genkey)
+        noout = 1;
 
-		l=BN_bn2bin(dsa->g,data);
-		printf("static unsigned char dsa%d_g[]={",bits_p);
-		for (i=0; i<l; i++)
-			{
-			if ((i%12) == 0) printf("\n\t");
-			printf("0x%02X,",data[i]);
-			}
-		printf("\n\t};\n\n");
+    if (!noout) {
+        if (outformat == FORMAT_ASN1)
+            i = i2d_DSAparams_bio(out, dsa);
+        else
+            i = PEM_write_bio_DSAparams(out, dsa);
+        if (!i) {
+            BIO_printf(bio_err, "unable to write DSA parameters\n");
+            ERR_print_errors(bio_err);
+            goto end;
+        }
+    }
+    if (genkey) {
+        DSA *dsakey;
 
-		printf("DSA *get_dsa%d()\n\t{\n",bits_p);
-		printf("\tDSA *dsa;\n\n");
-		printf("\tif ((dsa=DSA_new()) == NULL) return(NULL);\n");
-		printf("\tdsa->p=BN_bin2bn(dsa%d_p,sizeof(dsa%d_p),NULL);\n",
-			bits_p,bits_p);
-		printf("\tdsa->q=BN_bin2bn(dsa%d_q,sizeof(dsa%d_q),NULL);\n",
-			bits_p,bits_p);
-		printf("\tdsa->g=BN_bin2bn(dsa%d_g,sizeof(dsa%d_g),NULL);\n",
-			bits_p,bits_p);
-		printf("\tif ((dsa->p == NULL) || (dsa->q == NULL) || (dsa->g == NULL))\n");
-		printf("\t\t{ DSA_free(dsa); return(NULL); }\n");
-		printf("\treturn(dsa);\n\t}\n");
-		}
+        if ((dsakey = DSAparams_dup(dsa)) == NULL)
+            goto end;
+        if (!DSA_generate_key(dsakey)) {
+            ERR_print_errors(bio_err);
+            DSA_free(dsakey);
+            goto end;
+        }
+        assert(private);
+        if (outformat == FORMAT_ASN1)
+            i = i2d_DSAPrivateKey_bio(out, dsakey);
+        else
+            i = PEM_write_bio_DSAPrivateKey(out, dsakey, NULL, NULL, 0, NULL,
+                                            NULL);
+        DSA_free(dsakey);
+    }
+    ret = 0;
+ end:
+    BN_GENCB_free(cb);
+    BIO_free(in);
+    BIO_free_all(out);
+    DSA_free(dsa);
+    release_engine(e);
+    return ret;
+}
 
+static int dsa_cb(int p, int n, BN_GENCB *cb)
+{
+    static const char symbols[] = ".+*\n";
+    char c = (p >= 0 && (size_t)p < sizeof(symbols) - 1) ? symbols[p] : '?';
 
-	if (!noout)
-		{
-		if 	(outformat == FORMAT_ASN1)
-			i=i2d_DSAparams_bio(out,dsa);
-		else if (outformat == FORMAT_PEM)
-			i=PEM_write_bio_DSAparams(out,dsa);
-		else	{
-			BIO_printf(bio_err,"bad output format specified for outfile\n");
-			goto end;
-			}
-		if (!i)
-			{
-			BIO_printf(bio_err,"unable to write DSA parameters\n");
-			ERR_print_errors(bio_err);
-			goto end;
-			}
-		}
-	if (genkey)
-		{
-		DSA *dsakey;
-
-		assert(need_rand);
-		if ((dsakey=DSAparams_dup(dsa)) == NULL) goto end;
-		if (!DSA_generate_key(dsakey)) goto end;
-		if 	(outformat == FORMAT_ASN1)
-			i=i2d_DSAPrivateKey_bio(out,dsakey);
-		else if (outformat == FORMAT_PEM)
-			i=PEM_write_bio_DSAPrivateKey(out,dsakey,NULL,NULL,0,NULL,NULL);
-		else	{
-			BIO_printf(bio_err,"bad output format specified for outfile\n");
-			goto end;
-			}
-		DSA_free(dsakey);
-		}
-	if (need_rand)
-		app_RAND_write_file(NULL, bio_err);
-	ret=0;
-end:
-	if (in != NULL) BIO_free(in);
-	if (out != NULL) BIO_free_all(out);
-	if (dsa != NULL) DSA_free(dsa);
-	apps_shutdown();
-	EXIT(ret);
-	}
-
-static void MS_CALLBACK dsa_cb(int p, int n, void *arg)
-	{
-	char c='*';
-
-	if (p == 0) c='.';
-	if (p == 1) c='+';
-	if (p == 2) c='*';
-	if (p == 3) c='\n';
-	BIO_write(arg,&c,1);
-	(void)BIO_flush(arg);
-#ifdef LINT
-	p=n;
-#endif
-	}
+    BIO_write(BN_GENCB_get_arg(cb), &c, 1);
+    (void)BIO_flush(BN_GENCB_get_arg(cb));
+    return 1;
+}
 #endif