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			260 lines
		
	
	
	
		
			7.5 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			260 lines
		
	
	
	
		
			7.5 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
| /*
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|  * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
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|  *
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|  * Licensed under the OpenSSL license (the "License").  You may not use
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|  * this file except in compliance with the License.  You can obtain a copy
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|  * in the file LICENSE in the source distribution or at
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|  * https://www.openssl.org/source/license.html
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|  */
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| 
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| #include <openssl/opensslconf.h>
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| #include <stdio.h>
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| #include <stdlib.h>
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| #include <string.h>
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| #include <time.h>
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| #include "apps.h"
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| #include "progs.h"
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| #include <openssl/bio.h>
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| #include <openssl/err.h>
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| #include <openssl/dsa.h>
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| #include <openssl/evp.h>
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| #include <openssl/x509.h>
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| #include <openssl/pem.h>
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| #include <openssl/bn.h>
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| 
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| typedef enum OPTION_choice {
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|     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
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|     OPT_INFORM, OPT_OUTFORM, OPT_IN, OPT_OUT, OPT_ENGINE,
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|     /* Do not change the order here; see case statements below */
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|     OPT_PVK_NONE, OPT_PVK_WEAK, OPT_PVK_STRONG,
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|     OPT_NOOUT, OPT_TEXT, OPT_MODULUS, OPT_PUBIN,
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|     OPT_PUBOUT, OPT_CIPHER, OPT_PASSIN, OPT_PASSOUT
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| } OPTION_CHOICE;
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| 
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| const OPTIONS dsa_options[] = {
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|     {"help", OPT_HELP, '-', "Display this summary"},
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|     {"inform", OPT_INFORM, 'f', "Input format, DER PEM PVK"},
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|     {"outform", OPT_OUTFORM, 'f', "Output format, DER PEM PVK"},
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|     {"in", OPT_IN, 's', "Input key"},
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|     {"out", OPT_OUT, '>', "Output file"},
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|     {"noout", OPT_NOOUT, '-', "Don't print key out"},
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|     {"text", OPT_TEXT, '-', "Print the key in text"},
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|     {"modulus", OPT_MODULUS, '-', "Print the DSA public value"},
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|     {"pubin", OPT_PUBIN, '-', "Expect a public key in input file"},
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|     {"pubout", OPT_PUBOUT, '-', "Output public key, not private"},
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|     {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
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|     {"passout", OPT_PASSOUT, 's', "Output file pass phrase source"},
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|     {"", OPT_CIPHER, '-', "Any supported cipher"},
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| #ifndef OPENSSL_NO_RC4
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|     {"pvk-strong", OPT_PVK_STRONG, '-', "Enable 'Strong' PVK encoding level (default)"},
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|     {"pvk-weak", OPT_PVK_WEAK, '-', "Enable 'Weak' PVK encoding level"},
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|     {"pvk-none", OPT_PVK_NONE, '-', "Don't enforce PVK encoding"},
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| #endif
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| #ifndef OPENSSL_NO_ENGINE
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|     {"engine", OPT_ENGINE, 's', "Use engine e, possibly a hardware device"},
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| #endif
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|     {NULL}
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| };
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| 
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| int dsa_main(int argc, char **argv)
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| {
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|     BIO *out = NULL;
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|     DSA *dsa = NULL;
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|     ENGINE *e = NULL;
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|     const EVP_CIPHER *enc = NULL;
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|     char *infile = NULL, *outfile = NULL, *prog;
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|     char *passin = NULL, *passout = NULL, *passinarg = NULL, *passoutarg = NULL;
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|     OPTION_CHOICE o;
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|     int informat = FORMAT_PEM, outformat = FORMAT_PEM, text = 0, noout = 0;
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|     int i, modulus = 0, pubin = 0, pubout = 0, ret = 1;
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| #ifndef OPENSSL_NO_RC4
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|     int pvk_encr = 2;
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| #endif
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|     int private = 0;
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| 
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|     prog = opt_init(argc, argv, dsa_options);
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|     while ((o = opt_next()) != OPT_EOF) {
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|         switch (o) {
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|         case OPT_EOF:
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|         case OPT_ERR:
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|  opthelp:
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|             ret = 0;
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|             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
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|             goto end;
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|         case OPT_HELP:
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|             opt_help(dsa_options);
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|             ret = 0;
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|             goto end;
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|         case OPT_INFORM:
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|             if (!opt_format(opt_arg(), OPT_FMT_ANY, &informat))
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|                 goto opthelp;
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|             break;
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|         case OPT_IN:
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|             infile = opt_arg();
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|             break;
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|         case OPT_OUTFORM:
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|             if (!opt_format(opt_arg(), OPT_FMT_ANY, &outformat))
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|                 goto opthelp;
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|             break;
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|         case OPT_OUT:
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|             outfile = opt_arg();
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|             break;
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|         case OPT_ENGINE:
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|             e = setup_engine(opt_arg(), 0);
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|             break;
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|         case OPT_PASSIN:
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|             passinarg = opt_arg();
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|             break;
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|         case OPT_PASSOUT:
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|             passoutarg = opt_arg();
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|             break;
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|         case OPT_PVK_STRONG:    /* pvk_encr:= 2 */
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|         case OPT_PVK_WEAK:      /* pvk_encr:= 1 */
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|         case OPT_PVK_NONE:      /* pvk_encr:= 0 */
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| #ifndef OPENSSL_NO_RC4
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|             pvk_encr = (o - OPT_PVK_NONE);
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| #endif
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|             break;
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|         case OPT_NOOUT:
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|             noout = 1;
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|             break;
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|         case OPT_TEXT:
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|             text = 1;
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|             break;
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|         case OPT_MODULUS:
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|             modulus = 1;
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|             break;
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|         case OPT_PUBIN:
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|             pubin = 1;
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|             break;
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|         case OPT_PUBOUT:
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|             pubout = 1;
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|             break;
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|         case OPT_CIPHER:
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|             if (!opt_cipher(opt_unknown(), &enc))
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|                 goto end;
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|             break;
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|         }
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|     }
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|     argc = opt_num_rest();
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|     if (argc != 0)
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|         goto opthelp;
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| 
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|     private = pubin || pubout ? 0 : 1;
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|     if (text && !pubin)
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|         private = 1;
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| 
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|     if (!app_passwd(passinarg, passoutarg, &passin, &passout)) {
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|         BIO_printf(bio_err, "Error getting passwords\n");
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|         goto end;
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|     }
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| 
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|     BIO_printf(bio_err, "read DSA key\n");
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|     {
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|         EVP_PKEY *pkey;
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| 
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|         if (pubin)
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|             pkey = load_pubkey(infile, informat, 1, passin, e, "Public Key");
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|         else
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|             pkey = load_key(infile, informat, 1, passin, e, "Private Key");
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| 
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|         if (pkey != NULL) {
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|             dsa = EVP_PKEY_get1_DSA(pkey);
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|             EVP_PKEY_free(pkey);
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|         }
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|     }
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|     if (dsa == NULL) {
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|         BIO_printf(bio_err, "unable to load Key\n");
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|         ERR_print_errors(bio_err);
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|         goto end;
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|     }
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| 
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|     out = bio_open_owner(outfile, outformat, private);
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|     if (out == NULL)
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|         goto end;
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| 
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|     if (text) {
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|         assert(pubin || private);
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|         if (!DSA_print(out, dsa, 0)) {
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|             perror(outfile);
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|             ERR_print_errors(bio_err);
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|             goto end;
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|         }
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|     }
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| 
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|     if (modulus) {
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|         const BIGNUM *pub_key = NULL;
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|         DSA_get0_key(dsa, &pub_key, NULL);
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|         BIO_printf(out, "Public Key=");
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|         BN_print(out, pub_key);
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|         BIO_printf(out, "\n");
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|     }
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| 
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|     if (noout) {
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|         ret = 0;
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|         goto end;
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|     }
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|     BIO_printf(bio_err, "writing DSA key\n");
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|     if (outformat == FORMAT_ASN1) {
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|         if (pubin || pubout) {
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|             i = i2d_DSA_PUBKEY_bio(out, dsa);
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|         } else {
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|             assert(private);
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|             i = i2d_DSAPrivateKey_bio(out, dsa);
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|         }
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|     } else if (outformat == FORMAT_PEM) {
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|         if (pubin || pubout) {
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|             i = PEM_write_bio_DSA_PUBKEY(out, dsa);
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|         } else {
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|             assert(private);
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|             i = PEM_write_bio_DSAPrivateKey(out, dsa, enc,
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|                                             NULL, 0, NULL, passout);
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|         }
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| #ifndef OPENSSL_NO_RSA
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|     } else if (outformat == FORMAT_MSBLOB || outformat == FORMAT_PVK) {
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|         EVP_PKEY *pk;
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|         pk = EVP_PKEY_new();
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|         if (pk == NULL)
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|            goto end;
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| 
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|         EVP_PKEY_set1_DSA(pk, dsa);
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|         if (outformat == FORMAT_PVK) {
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|             if (pubin) {
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|                 BIO_printf(bio_err, "PVK form impossible with public key input\n");
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|                 EVP_PKEY_free(pk);
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|                 goto end;
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|             }
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|             assert(private);
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| # ifdef OPENSSL_NO_RC4
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|             BIO_printf(bio_err, "PVK format not supported\n");
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|             EVP_PKEY_free(pk);
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|             goto end;
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| # else
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|             i = i2b_PVK_bio(out, pk, pvk_encr, 0, passout);
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| # endif
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|         } else if (pubin || pubout) {
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|             i = i2b_PublicKey_bio(out, pk);
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|         } else {
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|             assert(private);
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|             i = i2b_PrivateKey_bio(out, pk);
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|         }
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|         EVP_PKEY_free(pk);
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| #endif
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|     } else {
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|         BIO_printf(bio_err, "bad output format specified for outfile\n");
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|         goto end;
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|     }
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|     if (i <= 0) {
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|         BIO_printf(bio_err, "unable to write private key\n");
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|         ERR_print_errors(bio_err);
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|         goto end;
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|     }
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|     ret = 0;
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|  end:
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|     BIO_free_all(out);
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|     DSA_free(dsa);
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|     release_engine(e);
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|     OPENSSL_free(passin);
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|     OPENSSL_free(passout);
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|     return ret;
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| }
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