Make update, etc.
[openssl.git] / apps / dsa.c
index 1109346..6ac9a40 100644 (file)
-/* apps/dsa.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
+/*
+ * Copyright 1995-2016 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 OpenSSL license (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
  */
 
-#include <openssl/opensslconf.h>       /* for OPENSSL_NO_DSA */
-#ifndef OPENSSL_NO_DSA
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-#include "apps.h"
-#include <openssl/bio.h>
-#include <openssl/err.h>
-#include <openssl/dsa.h>
-#include <openssl/evp.h>
-#include <openssl/x509.h>
-#include <openssl/pem.h>
-#include <openssl/bn.h>
+#include <openssl/opensslconf.h>
+#ifdef OPENSSL_NO_DSA
+NON_EMPTY_TRANSLATION_UNIT
+#else
 
-#undef PROG
-#define PROG   dsa_main
+# include <stdio.h>
+# include <stdlib.h>
+# include <string.h>
+# include <time.h>
+# include "apps.h"
+# include <openssl/bio.h>
+# include <openssl/err.h>
+# include <openssl/dsa.h>
+# include <openssl/evp.h>
+# include <openssl/x509.h>
+# include <openssl/pem.h>
+# include <openssl/bn.h>
 
-/* -inform arg - input format - default PEM (one of DER, NET or PEM)
- * -outform arg - output format - default PEM
- * -in arg     - input file - default stdin
- * -out arg    - output file - default stdout
- * -des                - encrypt output if PEM format with DES in cbc mode
- * -des3       - encrypt output if PEM format
- * -idea       - encrypt output if PEM format
- * -aes128     - encrypt output if PEM format
- * -aes192     - encrypt output if PEM format
- * -aes256     - encrypt output if PEM format
- * -camellia128 - encrypt output if PEM format
- * -camellia192 - encrypt output if PEM format
- * -camellia256 - encrypt output if PEM format
- * -seed        - encrypt output if PEM format
- * -text       - print a text version
- * -modulus    - print the DSA public key
- */
-
-int MAIN(int, char **);
-
-int MAIN(int argc, char **argv)
-       {
-       ENGINE *e = NULL;
-       int ret=1;
-       DSA *dsa=NULL;
-       int i,badops=0;
-       const EVP_CIPHER *enc=NULL;
-       BIO *in=NULL,*out=NULL;
-       int informat,outformat,text=0,noout=0;
-       int pubin = 0, pubout = 0;
-       char *infile,*outfile,*prog;
-#ifndef OPENSSL_NO_ENGINE
-       char *engine;
-#endif
-       char *passargin = NULL, *passargout = NULL;
-       char *passin = NULL, *passout = NULL;
-       int modulus=0;
-
-       int pvk_encr = 2;
-
-       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);
+typedef enum OPTION_choice {
+    OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
+    OPT_INFORM, OPT_OUTFORM, OPT_IN, OPT_OUT,
+    OPT_ENGINE, OPT_PVK_STRONG, OPT_PVK_WEAK,
+    OPT_PVK_NONE, OPT_NOOUT, OPT_TEXT, OPT_MODULUS, OPT_PUBIN,
+    OPT_PUBOUT, OPT_CIPHER, OPT_PASSIN, OPT_PASSOUT
+} OPTION_CHOICE;
 
-       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);
-                       }
-               else if (strcmp(*argv,"-passin") == 0)
-                       {
-                       if (--argc < 1) goto bad;
-                       passargin= *(++argv);
-                       }
-               else if (strcmp(*argv,"-passout") == 0)
-                       {
-                       if (--argc < 1) goto bad;
-                       passargout= *(++argv);
-                       }
-#ifndef OPENSSL_NO_ENGINE
-               else if (strcmp(*argv,"-engine") == 0)
-                       {
-                       if (--argc < 1) goto bad;
-                       engine= *(++argv);
-                       }
-#endif
-               else if (strcmp(*argv,"-pvk-strong") == 0)
-                       pvk_encr=2;
-               else if (strcmp(*argv,"-pvk-weak") == 0)
-                       pvk_encr=1;
-               else if (strcmp(*argv,"-pvk-none") == 0)
-                       pvk_encr=0;
-               else if (strcmp(*argv,"-noout") == 0)
-                       noout=1;
-               else if (strcmp(*argv,"-text") == 0)
-                       text=1;
-               else if (strcmp(*argv,"-modulus") == 0)
-                       modulus=1;
-               else if (strcmp(*argv,"-pubin") == 0)
-                       pubin=1;
-               else if (strcmp(*argv,"-pubout") == 0)
-                       pubout=1;
-               else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL)
-                       {
-                       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 - 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," -passin arg     input file pass phrase source\n");
-               BIO_printf(bio_err," -out arg        output file\n");
-               BIO_printf(bio_err," -passout arg    output file pass phrase source\n");
-#ifndef OPENSSL_NO_ENGINE
-               BIO_printf(bio_err," -engine e       use engine e, possibly a hardware device.\n");
-#endif
-               BIO_printf(bio_err," -des            encrypt PEM output with cbc des\n");
-               BIO_printf(bio_err," -des3           encrypt PEM output with ede cbc des using 168 bit key\n");
-#ifndef OPENSSL_NO_IDEA
-               BIO_printf(bio_err," -idea           encrypt PEM output with cbc idea\n");
-#endif
-#ifndef OPENSSL_NO_AES
-               BIO_printf(bio_err," -aes128, -aes192, -aes256\n");
-               BIO_printf(bio_err,"                 encrypt PEM output with cbc aes\n");
-#endif
-#ifndef OPENSSL_NO_CAMELLIA
-               BIO_printf(bio_err," -camellia128, -camellia192, -camellia256\n");
-               BIO_printf(bio_err,"                 encrypt PEM output with cbc camellia\n");
-#endif
-#ifndef OPENSSL_NO_SEED
-               BIO_printf(bio_err," -seed           encrypt PEM output with cbc seed\n");
-#endif
-               BIO_printf(bio_err," -text           print the key in text\n");
-               BIO_printf(bio_err," -noout          don't print key out\n");
-               BIO_printf(bio_err," -modulus        print the DSA public value\n");
-               goto end;
-               }
+OPTIONS dsa_options[] = {
+    {"help", OPT_HELP, '-', "Display this summary"},
+    {"inform", OPT_INFORM, 'f', "Input format, DER PEM PVK"},
+    {"outform", OPT_OUTFORM, 'F', "Output format, DER PEM PVK"},
+    {"in", OPT_IN, 's', "Input key"},
+    {"out", OPT_OUT, '>', "Output file"},
+    {"noout", OPT_NOOUT, '-', "Don't print key out"},
+    {"text", OPT_TEXT, '-', "Print the key in text"},
+    {"modulus", OPT_MODULUS, '-', "Print the DSA public value"},
+    {"pubin", OPT_PUBIN, '-', "Expect a public key in input file"},
+    {"pubout", OPT_PUBOUT, '-', "Output public key, not private"},
+    {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
+    {"passout", OPT_PASSOUT, 's', "Output file pass phrase source"},
+    {"", OPT_CIPHER, '-', "Any supported cipher"},
+# ifndef OPENSSL_NO_RC4
+    {"pvk-strong", OPT_PVK_STRONG, '-'},
+    {"pvk-weak", OPT_PVK_WEAK, '-'},
+    {"pvk-none", OPT_PVK_NONE, '-'},
+# endif
+# ifndef OPENSSL_NO_ENGINE
+    {"engine", OPT_ENGINE, 's', "Use engine e, possibly a hardware device"},
+# endif
+    {NULL}
+};
 
-       ERR_load_crypto_strings();
+int dsa_main(int argc, char **argv)
+{
+    BIO *out = NULL;
+    DSA *dsa = NULL;
+    ENGINE *e = NULL;
+    const EVP_CIPHER *enc = NULL;
+    char *infile = NULL, *outfile = NULL, *prog;
+    char *passin = NULL, *passout = NULL, *passinarg = NULL, *passoutarg = NULL;
+    OPTION_CHOICE o;
+    int informat = FORMAT_PEM, outformat = FORMAT_PEM, text = 0, noout = 0;
+    int i, modulus = 0, pubin = 0, pubout = 0, ret = 1;
+# ifndef OPENSSL_NO_RC4
+    int pvk_encr = 2;
+# endif
+    int private = 0;
 
-#ifndef OPENSSL_NO_ENGINE
-        e = setup_engine(bio_err, engine, 0);
+    prog = opt_init(argc, argv, dsa_options);
+    while ((o = opt_next()) != OPT_EOF) {
+        switch (o) {
+        case OPT_EOF:
+        case OPT_ERR:
+ opthelp:
+            ret = 0;
+            BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
+            goto end;
+        case OPT_HELP:
+            opt_help(dsa_options);
+            ret = 0;
+            goto end;
+        case OPT_INFORM:
+            if (!opt_format(opt_arg(), OPT_FMT_ANY, &informat))
+                goto opthelp;
+            break;
+        case OPT_IN:
+            infile = opt_arg();
+            break;
+        case OPT_OUTFORM:
+            if (!opt_format
+                (opt_arg(), OPT_FMT_PEMDER | OPT_FMT_PVK, &outformat))
+                goto opthelp;
+            break;
+        case OPT_OUT:
+            outfile = opt_arg();
+            break;
+        case OPT_ENGINE:
+            e = setup_engine(opt_arg(), 0);
+            break;
+        case OPT_PASSIN:
+            passinarg = opt_arg();
+            break;
+        case OPT_PASSOUT:
+            passoutarg = opt_arg();
+            break;
+#ifndef OPENSSL_NO_RC4
+        case OPT_PVK_STRONG:
+            pvk_encr = 2;
+            break;
+        case OPT_PVK_WEAK:
+            pvk_encr = 1;
+            break;
+        case OPT_PVK_NONE:
+            pvk_encr = 0;
+            break;
+#else
+        case OPT_PVK_STRONG:
+        case OPT_PVK_WEAK:
+        case OPT_PVK_NONE:
+            break;
 #endif
+        case OPT_NOOUT:
+            noout = 1;
+            break;
+        case OPT_TEXT:
+            text = 1;
+            break;
+        case OPT_MODULUS:
+            modulus = 1;
+            break;
+        case OPT_PUBIN:
+            pubin = 1;
+            break;
+        case OPT_PUBOUT:
+            pubout = 1;
+            break;
+        case OPT_CIPHER:
+            if (!opt_cipher(opt_unknown(), &enc))
+                goto end;
+            break;
+        }
+    }
+    argc = opt_num_rest();
+    if (argc != 0)
+        goto opthelp;
 
-       if(!app_passwd(bio_err, passargin, passargout, &passin, &passout)) {
-               BIO_printf(bio_err, "Error getting passwords\n");
-               goto end;
-       }
+    private = pubin || pubout ? 0 : 1;
+    if (text && !pubin)
+        private = 1;
 
-       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 (!app_passwd(passinarg, passoutarg, &passin, &passout)) {
+        BIO_printf(bio_err, "Error getting passwords\n");
+        goto end;
+    }
 
-       if (infile == NULL)
-               BIO_set_fp(in,stdin,BIO_NOCLOSE);
-       else
-               {
-               if (BIO_read_filename(in,infile) <= 0)
-                       {
-                       perror(infile);
-                       goto end;
-                       }
-               }
+    BIO_printf(bio_err, "read DSA key\n");
+    {
+        EVP_PKEY *pkey;
 
-       BIO_printf(bio_err,"read DSA key\n");
+        if (pubin)
+            pkey = load_pubkey(infile, informat, 1, passin, e, "Public Key");
+        else
+            pkey = load_key(infile, informat, 1, passin, e, "Private Key");
 
-               {
-               EVP_PKEY        *pkey;
+        if (pkey) {
+            dsa = EVP_PKEY_get1_DSA(pkey);
+            EVP_PKEY_free(pkey);
+        }
+    }
+    if (dsa == NULL) {
+        BIO_printf(bio_err, "unable to load Key\n");
+        ERR_print_errors(bio_err);
+        goto end;
+    }
 
-               if (pubin)
-                       pkey = load_pubkey(bio_err, infile, informat, 1,
-                               passin, e, "Public Key");
-               else
-                       pkey = load_key(bio_err, infile, informat, 1,
-                               passin, e, "Private Key");
+    out = bio_open_owner(outfile, outformat, private);
+    if (out == NULL)
+        goto end;
 
-               if (pkey)
-                       {
-                       dsa = EVP_PKEY_get1_DSA(pkey);
-                       EVP_PKEY_free(pkey);
-                       }
-               }
-       if (dsa == NULL)
-               {
-               BIO_printf(bio_err,"unable to load Key\n");
-               ERR_print_errors(bio_err);
-               goto end;
-               }
+    if (text) {
+        assert(pubin || private);
+        if (!DSA_print(out, dsa, 0)) {
+            perror(outfile);
+            ERR_print_errors(bio_err);
+            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 (text) 
-               if (!DSA_print(out,dsa,0))
-                       {
-                       perror(outfile);
-                       ERR_print_errors(bio_err);
-                       goto end;
-                       }
-
-       if (modulus)
-               {
-               fprintf(stdout,"Public Key=");
-               BN_print(out,dsa->pub_key);
-               fprintf(stdout,"\n");
-               }
+    if (modulus) {
+        const BIGNUM *pub_key = NULL;
+        DSA_get0_key(dsa, &pub_key, NULL);
+        BIO_printf(out, "Public Key=");
+        BN_print(out, pub_key);
+        BIO_printf(out, "\n");
+    }
 
-       if (noout) goto end;
-       BIO_printf(bio_err,"writing DSA key\n");
-       if      (outformat == FORMAT_ASN1) {
-               if(pubin || pubout) i=i2d_DSA_PUBKEY_bio(out,dsa);
-               else i=i2d_DSAPrivateKey_bio(out,dsa);
-       } else if (outformat == FORMAT_PEM) {
-               if(pubin || pubout)
-                       i=PEM_write_bio_DSA_PUBKEY(out,dsa);
-               else i=PEM_write_bio_DSAPrivateKey(out,dsa,enc,
-                                                       NULL,0,NULL, passout);
-#ifndef OPENSSL_NO_RSA
-       } else if (outformat == FORMAT_MSBLOB || outformat == FORMAT_PVK) {
-               EVP_PKEY *pk;
-               pk = EVP_PKEY_new();
-               EVP_PKEY_set1_DSA(pk, dsa);
-               if (outformat == FORMAT_PVK)
-                       i = i2b_PVK_bio(out, pk, pvk_encr, 0, passout);
-               else if (pubin || pubout)
-                       i = i2b_PublicKey_bio(out, pk);
-               else
-                       i = i2b_PrivateKey_bio(out, pk);
-               EVP_PKEY_free(pk);
-#endif
-       } else {
-               BIO_printf(bio_err,"bad output format specified for outfile\n");
-               goto end;
-               }
-       if (i <= 0)
-               {
-               BIO_printf(bio_err,"unable to write private key\n");
-               ERR_print_errors(bio_err);
-               }
-       else
-               ret=0;
-end:
-       if(in != NULL) BIO_free(in);
-       if(out != NULL) BIO_free_all(out);
-       if(dsa != NULL) DSA_free(dsa);
-       if(passin) OPENSSL_free(passin);
-       if(passout) OPENSSL_free(passout);
-       apps_shutdown();
-       OPENSSL_EXIT(ret);
-       }
-#else /* !OPENSSL_NO_DSA */
-
-# if PEDANTIC
-static void *dummy=&dummy;
+    if (noout) {
+        ret = 0;
+        goto end;
+    }
+    BIO_printf(bio_err, "writing DSA key\n");
+    if (outformat == FORMAT_ASN1) {
+        if (pubin || pubout)
+            i = i2d_DSA_PUBKEY_bio(out, dsa);
+        else {
+            assert(private);
+            i = i2d_DSAPrivateKey_bio(out, dsa);
+        }
+    } else if (outformat == FORMAT_PEM) {
+        if (pubin || pubout)
+            i = PEM_write_bio_DSA_PUBKEY(out, dsa);
+        else {
+            assert(private);
+            i = PEM_write_bio_DSAPrivateKey(out, dsa, enc,
+                                            NULL, 0, NULL, passout);
+        }
+# if !defined(OPENSSL_NO_RSA) && !defined(OPENSSL_NO_RC4)
+    } else if (outformat == FORMAT_MSBLOB || outformat == FORMAT_PVK) {
+        EVP_PKEY *pk;
+        pk = EVP_PKEY_new();
+        EVP_PKEY_set1_DSA(pk, dsa);
+        if (outformat == FORMAT_PVK) {
+            if (pubin) {
+                BIO_printf(bio_err, "PVK form impossible with public key input\n");
+                EVP_PKEY_free(pk);
+                goto end;
+            }
+            assert(private);
+            i = i2b_PVK_bio(out, pk, pvk_encr, 0, passout);
+        }
+        else if (pubin || pubout)
+            i = i2b_PublicKey_bio(out, pk);
+        else {
+            assert(private);
+            i = i2b_PrivateKey_bio(out, pk);
+        }
+        EVP_PKEY_free(pk);
 # endif
-
+    } else {
+        BIO_printf(bio_err, "bad output format specified for outfile\n");
+        goto end;
+    }
+    if (i <= 0) {
+        BIO_printf(bio_err, "unable to write private key\n");
+        ERR_print_errors(bio_err);
+        goto end;
+    }
+    ret = 0;
+ end:
+    BIO_free_all(out);
+    DSA_free(dsa);
+    OPENSSL_free(passin);
+    OPENSSL_free(passout);
+    return (ret);
+}
 #endif