[331] | 1 | /*
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| 2 | * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the OpenSSL license (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #include <openssl/opensslconf.h>
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| 11 | #ifdef OPENSSL_NO_DSA
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| 12 | NON_EMPTY_TRANSLATION_UNIT
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| 13 | #else
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| 14 |
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| 15 | # include <stdio.h>
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| 16 | # include <stdlib.h>
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| 17 | # include <string.h>
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| 18 | # include <time.h>
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| 19 | # include "apps.h"
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| 20 | # include <openssl/bio.h>
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| 21 | # include <openssl/err.h>
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| 22 | # include <openssl/dsa.h>
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| 23 | # include <openssl/evp.h>
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| 24 | # include <openssl/x509.h>
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| 25 | # include <openssl/pem.h>
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| 26 | # include <openssl/bn.h>
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| 27 |
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| 28 | typedef enum OPTION_choice {
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| 29 | OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
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| 30 | OPT_INFORM, OPT_OUTFORM, OPT_IN, OPT_OUT, OPT_ENGINE,
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| 31 | /* Do not change the order here; see case statements below */
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| 32 | OPT_PVK_NONE, OPT_PVK_WEAK, OPT_PVK_STRONG,
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| 33 | OPT_NOOUT, OPT_TEXT, OPT_MODULUS, OPT_PUBIN,
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| 34 | OPT_PUBOUT, OPT_CIPHER, OPT_PASSIN, OPT_PASSOUT
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| 35 | } OPTION_CHOICE;
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| 36 |
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| 37 | OPTIONS dsa_options[] = {
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| 38 | {"help", OPT_HELP, '-', "Display this summary"},
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| 39 | {"inform", OPT_INFORM, 'f', "Input format, DER PEM PVK"},
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| 40 | {"outform", OPT_OUTFORM, 'f', "Output format, DER PEM PVK"},
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| 41 | {"in", OPT_IN, 's', "Input key"},
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| 42 | {"out", OPT_OUT, '>', "Output file"},
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| 43 | {"noout", OPT_NOOUT, '-', "Don't print key out"},
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| 44 | {"text", OPT_TEXT, '-', "Print the key in text"},
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| 45 | {"modulus", OPT_MODULUS, '-', "Print the DSA public value"},
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| 46 | {"pubin", OPT_PUBIN, '-', "Expect a public key in input file"},
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| 47 | {"pubout", OPT_PUBOUT, '-', "Output public key, not private"},
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| 48 | {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
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| 49 | {"passout", OPT_PASSOUT, 's', "Output file pass phrase source"},
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| 50 | {"", OPT_CIPHER, '-', "Any supported cipher"},
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| 51 | # ifndef OPENSSL_NO_RC4
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| 52 | {"pvk-strong", OPT_PVK_STRONG, '-', "Enable 'Strong' PVK encoding level (default)"},
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| 53 | {"pvk-weak", OPT_PVK_WEAK, '-', "Enable 'Weak' PVK encoding level"},
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| 54 | {"pvk-none", OPT_PVK_NONE, '-', "Don't enforce PVK encoding"},
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| 55 | # endif
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| 56 | # ifndef OPENSSL_NO_ENGINE
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| 57 | {"engine", OPT_ENGINE, 's', "Use engine e, possibly a hardware device"},
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| 58 | # endif
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| 59 | {NULL}
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| 60 | };
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| 61 |
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| 62 | int dsa_main(int argc, char **argv)
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| 63 | {
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| 64 | BIO *out = NULL;
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| 65 | DSA *dsa = NULL;
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| 66 | ENGINE *e = NULL;
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| 67 | const EVP_CIPHER *enc = NULL;
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| 68 | char *infile = NULL, *outfile = NULL, *prog;
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| 69 | char *passin = NULL, *passout = NULL, *passinarg = NULL, *passoutarg = NULL;
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| 70 | OPTION_CHOICE o;
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| 71 | int informat = FORMAT_PEM, outformat = FORMAT_PEM, text = 0, noout = 0;
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| 72 | int i, modulus = 0, pubin = 0, pubout = 0, ret = 1;
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| 73 | # ifndef OPENSSL_NO_RC4
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| 74 | int pvk_encr = 2;
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| 75 | # endif
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| 76 | int private = 0;
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| 77 |
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| 78 | prog = opt_init(argc, argv, dsa_options);
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| 79 | while ((o = opt_next()) != OPT_EOF) {
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| 80 | switch (o) {
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| 81 | case OPT_EOF:
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| 82 | case OPT_ERR:
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| 83 | opthelp:
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| 84 | ret = 0;
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| 85 | BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
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| 86 | goto end;
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| 87 | case OPT_HELP:
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| 88 | opt_help(dsa_options);
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| 89 | ret = 0;
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| 90 | goto end;
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| 91 | case OPT_INFORM:
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| 92 | if (!opt_format(opt_arg(), OPT_FMT_ANY, &informat))
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| 93 | goto opthelp;
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| 94 | break;
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| 95 | case OPT_IN:
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| 96 | infile = opt_arg();
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| 97 | break;
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| 98 | case OPT_OUTFORM:
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| 99 | if (!opt_format(opt_arg(), OPT_FMT_ANY, &outformat))
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| 100 | goto opthelp;
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| 101 | break;
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| 102 | case OPT_OUT:
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| 103 | outfile = opt_arg();
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| 104 | break;
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| 105 | case OPT_ENGINE:
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| 106 | e = setup_engine(opt_arg(), 0);
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| 107 | break;
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| 108 | case OPT_PASSIN:
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| 109 | passinarg = opt_arg();
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| 110 | break;
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| 111 | case OPT_PASSOUT:
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| 112 | passoutarg = opt_arg();
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| 113 | break;
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| 114 | case OPT_PVK_STRONG: /* pvk_encr:= 2 */
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| 115 | case OPT_PVK_WEAK: /* pvk_encr:= 1 */
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| 116 | case OPT_PVK_NONE: /* pvk_encr:= 0 */
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| 117 | #ifndef OPENSSL_NO_RC4
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| 118 | pvk_encr = (o - OPT_PVK_NONE);
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| 119 | #endif
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| 120 | break;
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| 121 | case OPT_NOOUT:
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| 122 | noout = 1;
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| 123 | break;
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| 124 | case OPT_TEXT:
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| 125 | text = 1;
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| 126 | break;
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| 127 | case OPT_MODULUS:
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| 128 | modulus = 1;
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| 129 | break;
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| 130 | case OPT_PUBIN:
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| 131 | pubin = 1;
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| 132 | break;
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| 133 | case OPT_PUBOUT:
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| 134 | pubout = 1;
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| 135 | break;
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| 136 | case OPT_CIPHER:
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| 137 | if (!opt_cipher(opt_unknown(), &enc))
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| 138 | goto end;
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| 139 | break;
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| 140 | }
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| 141 | }
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| 142 | argc = opt_num_rest();
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| 143 | if (argc != 0)
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| 144 | goto opthelp;
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| 145 |
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| 146 | private = pubin || pubout ? 0 : 1;
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| 147 | if (text && !pubin)
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| 148 | private = 1;
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| 149 |
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| 150 | if (!app_passwd(passinarg, passoutarg, &passin, &passout)) {
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| 151 | BIO_printf(bio_err, "Error getting passwords\n");
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| 152 | goto end;
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| 153 | }
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| 154 |
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| 155 | BIO_printf(bio_err, "read DSA key\n");
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| 156 | {
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| 157 | EVP_PKEY *pkey;
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| 158 |
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| 159 | if (pubin)
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| 160 | pkey = load_pubkey(infile, informat, 1, passin, e, "Public Key");
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| 161 | else
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| 162 | pkey = load_key(infile, informat, 1, passin, e, "Private Key");
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| 163 |
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| 164 | if (pkey) {
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| 165 | dsa = EVP_PKEY_get1_DSA(pkey);
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| 166 | EVP_PKEY_free(pkey);
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| 167 | }
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| 168 | }
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| 169 | if (dsa == NULL) {
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| 170 | BIO_printf(bio_err, "unable to load Key\n");
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| 171 | ERR_print_errors(bio_err);
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| 172 | goto end;
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| 173 | }
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| 174 |
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| 175 | out = bio_open_owner(outfile, outformat, private);
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| 176 | if (out == NULL)
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| 177 | goto end;
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| 178 |
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| 179 | if (text) {
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| 180 | assert(pubin || private);
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| 181 | if (!DSA_print(out, dsa, 0)) {
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| 182 | perror(outfile);
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| 183 | ERR_print_errors(bio_err);
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| 184 | goto end;
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| 185 | }
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| 186 | }
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| 187 |
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| 188 | if (modulus) {
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| 189 | const BIGNUM *pub_key = NULL;
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| 190 | DSA_get0_key(dsa, &pub_key, NULL);
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| 191 | BIO_printf(out, "Public Key=");
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| 192 | BN_print(out, pub_key);
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| 193 | BIO_printf(out, "\n");
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| 194 | }
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| 195 |
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| 196 | if (noout) {
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| 197 | ret = 0;
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| 198 | goto end;
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| 199 | }
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| 200 | BIO_printf(bio_err, "writing DSA key\n");
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| 201 | if (outformat == FORMAT_ASN1) {
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| 202 | if (pubin || pubout)
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| 203 | i = i2d_DSA_PUBKEY_bio(out, dsa);
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| 204 | else {
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| 205 | assert(private);
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| 206 | i = i2d_DSAPrivateKey_bio(out, dsa);
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| 207 | }
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| 208 | } else if (outformat == FORMAT_PEM) {
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| 209 | if (pubin || pubout)
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| 210 | i = PEM_write_bio_DSA_PUBKEY(out, dsa);
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| 211 | else {
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| 212 | assert(private);
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| 213 | i = PEM_write_bio_DSAPrivateKey(out, dsa, enc,
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| 214 | NULL, 0, NULL, passout);
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| 215 | }
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| 216 | # ifndef OPENSSL_NO_RSA
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| 217 | } else if (outformat == FORMAT_MSBLOB || outformat == FORMAT_PVK) {
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| 218 | EVP_PKEY *pk;
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| 219 | pk = EVP_PKEY_new();
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| 220 | EVP_PKEY_set1_DSA(pk, dsa);
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| 221 | if (outformat == FORMAT_PVK) {
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| 222 | if (pubin) {
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| 223 | BIO_printf(bio_err, "PVK form impossible with public key input\n");
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| 224 | EVP_PKEY_free(pk);
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| 225 | goto end;
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| 226 | }
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| 227 | assert(private);
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| 228 | # ifdef OPENSSL_NO_RC4
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| 229 | BIO_printf(bio_err, "PVK format not supported\n");
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| 230 | EVP_PKEY_free(pk);
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| 231 | goto end;
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| 232 | # else
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| 233 | i = i2b_PVK_bio(out, pk, pvk_encr, 0, passout);
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| 234 | # endif
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| 235 | }
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| 236 | else if (pubin || pubout)
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| 237 | i = i2b_PublicKey_bio(out, pk);
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| 238 | else {
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| 239 | assert(private);
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| 240 | i = i2b_PrivateKey_bio(out, pk);
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| 241 | }
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| 242 | EVP_PKEY_free(pk);
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| 243 | # endif
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| 244 | } else {
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| 245 | BIO_printf(bio_err, "bad output format specified for outfile\n");
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| 246 | goto end;
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| 247 | }
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| 248 | if (i <= 0) {
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| 249 | BIO_printf(bio_err, "unable to write private key\n");
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| 250 | ERR_print_errors(bio_err);
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| 251 | goto end;
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| 252 | }
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| 253 | ret = 0;
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| 254 | end:
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| 255 | BIO_free_all(out);
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| 256 | DSA_free(dsa);
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| 257 | release_engine(e);
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| 258 | OPENSSL_free(passin);
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| 259 | OPENSSL_free(passout);
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| 260 | return (ret);
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| 261 | }
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| 262 | #endif
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