266 lines
7.6 KiB
C
266 lines
7.6 KiB
C
/*
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* Copyright 1995-2018 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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#include <openssl/opensslconf.h>
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#ifdef OPENSSL_NO_DSA
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NON_EMPTY_TRANSLATION_UNIT
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#else
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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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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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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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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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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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private = pubin || pubout ? 0 : 1;
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if (text && !pubin)
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private = 1;
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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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BIO_printf(bio_err, "read DSA key\n");
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{
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EVP_PKEY *pkey;
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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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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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out = bio_open_owner(outfile, outformat, private);
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if (out == NULL)
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goto end;
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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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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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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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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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#endif
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