- 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");
-
- 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 (!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();
- OPENSSL_EXIT(ret);
- }
-
-static int MS_CALLBACK dsa_cb(int p, int n, BN_GENCB *cb)
- {
- char c='*';
-
- if (p == 0) c='.';
- if (p == 1) c='+';
- if (p == 2) c='*';
- if (p == 3) c='\n';
- BIO_write(cb->arg,&c,1);
- (void)BIO_flush(cb->arg);
-#ifdef LINT
- p=n;
-#endif
-#ifdef GENCB_TEST
- if(stop_keygen_flag)
- return 0;
-#endif
- return 1;
- }
-#endif
+ OPT_SECTION("Input"),
+ {"in", OPT_IN, '<', "Input file"},
+ {"inform", OPT_INFORM, 'F', "Input format - DER or PEM"},
+
+ OPT_SECTION("Output"),
+ {"out", OPT_OUT, '>', "Output file"},
+ {"outform", OPT_OUTFORM, 'F', "Output format - DER or PEM"},
+ {"text", OPT_TEXT, '-', "Print as text"},
+ {"C", OPT_C, '-', "Output C code"},
+ {"noout", OPT_NOOUT, '-', "No output"},
+ {"verbose", OPT_VERBOSE, '-', "Verbose output"},
+ {"genkey", OPT_GENKEY, '-', "Generate a DSA key"},
+
+ OPT_R_OPTIONS,
+ OPT_PROV_OPTIONS,
+
+ OPT_PARAMETERS(),
+ {"numbits", 0, 0, "Number of bits if generating parameters (optional)"},
+ {NULL}
+};
+
+int dsaparam_main(int argc, char **argv)
+{
+ ENGINE *e = NULL;
+ DSA *dsa = NULL;
+ BIO *in = NULL, *out = NULL;
+ EVP_PKEY *pkey = NULL;
+ EVP_PKEY_CTX *ctx = 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;
+
+ 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_PROV_CASES:
+ if (!opt_provider(o))
+ goto end;
+ break;
+ case OPT_NOOUT:
+ noout = 1;
+ break;
+ case OPT_VERBOSE:
+ verbose = 1;
+ break;
+ }
+ }
+ argc = opt_num_rest();
+ argv = opt_rest();
+
+ if (argc == 1) {
+ if (!opt_int(argv[0], &num) || num < 0)
+ goto end;
+ /* generate a key */
+ numbits = num;
+ }
+ private = genkey ? 1 : 0;
+
+ in = bio_open_default(infile, 'r', informat);
+ if (in == NULL)
+ goto end;
+ out = bio_open_owner(outfile, outformat, private);
+ if (out == NULL)
+ goto end;
+
+ ctx = EVP_PKEY_CTX_new_from_name(NULL, "DSA", NULL);
+ if (ctx == NULL) {
+ ERR_print_errors(bio_err);
+ BIO_printf(bio_err,
+ "Error, DSA parameter generation context allocation failed\n");
+ goto end;
+ }
+ 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);
+
+ EVP_PKEY_CTX_set_cb(ctx, gendsa_cb);
+ EVP_PKEY_CTX_set_app_data(ctx, bio_err);
+ if (verbose) {
+ BIO_printf(bio_err, "Generating DSA parameters, %d bit long prime\n",
+ num);
+ BIO_printf(bio_err, "This could take some time\n");
+ }
+ if (EVP_PKEY_paramgen_init(ctx) <= 0) {
+ ERR_print_errors(bio_err);
+ BIO_printf(bio_err,
+ "Error, DSA key generation paramgen init failed\n");
+ goto end;
+ }
+ if (!EVP_PKEY_CTX_set_dsa_paramgen_bits(ctx, num)) {
+ ERR_print_errors(bio_err);
+ BIO_printf(bio_err,
+ "Error, DSA key generation setting bit length failed\n");
+ goto end;
+ }
+ if (EVP_PKEY_paramgen(ctx, &pkey) <= 0) {
+ ERR_print_errors(bio_err);
+ BIO_printf(bio_err, "Error, DSA key generation failed\n");
+ goto end;
+ }
+ dsa = EVP_PKEY_get1_DSA(pkey);
+ if (dsa == NULL) {
+ ERR_print_errors(bio_err);
+ BIO_printf(bio_err, "Error, DSA key extraction 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;
+ }
+
+ if (pkey == NULL) {
+ pkey = EVP_PKEY_new();
+ if (pkey == NULL) {
+ BIO_printf(bio_err, "Error, unable to allocate PKEY object\n");
+ ERR_print_errors(bio_err);
+ goto end;
+ }
+ if (!EVP_PKEY_set1_DSA(pkey, dsa)) {
+ BIO_printf(bio_err, "Error, unable to set DSA parameters\n");
+ ERR_print_errors(bio_err);
+ goto end;
+ }
+ }
+ if (text) {
+ EVP_PKEY_print_params(out, pkey, 0, NULL);
+ }
+
+ if (C) {
+ const BIGNUM *p = NULL, *q = NULL, *g = NULL;
+ unsigned char *data;
+ int len, bits_p;
+
+ DSA_get0_pqg(dsa, &p, &q, &g);
+ len = BN_num_bytes(p);
+ bits_p = BN_num_bits(p);
+
+ data = app_malloc(len + 20, "BN space");
+
+ 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);
+ }
+
+ if (outformat == FORMAT_ASN1 && genkey)
+ noout = 1;
+
+ 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;
+
+ EVP_PKEY_CTX_free(ctx);
+ ctx = EVP_PKEY_CTX_new_from_name(NULL, "DSA", NULL);
+ if (ctx == NULL) {
+ ERR_print_errors(bio_err);
+ BIO_printf(bio_err,
+ "Error, DSA key generation context allocation failed\n");
+ goto end;
+ }
+ if (!EVP_PKEY_keygen_init(ctx)) {
+ BIO_printf(bio_err, "unable to initialise for key generation\n");
+ ERR_print_errors(bio_err);
+ goto end;
+ }
+ if (!EVP_PKEY_keygen(ctx, &pkey)) {
+ BIO_printf(bio_err, "unable to generate key\n");
+ ERR_print_errors(bio_err);
+ goto end;
+ }
+ dsakey = EVP_PKEY_get0_DSA(pkey);
+ if (dsakey == NULL) {
+ BIO_printf(bio_err, "unable to extract generated key\n");
+ ERR_print_errors(bio_err);
+ 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);
+ }
+ ret = 0;
+ end:
+ BIO_free(in);
+ BIO_free_all(out);
+ EVP_PKEY_CTX_free(ctx);
+ EVP_PKEY_free(pkey);
+ DSA_free(dsa);
+ release_engine(e);
+ return ret;
+}
+
+static int gendsa_cb(EVP_PKEY_CTX *ctx)
+{
+ static const char symbols[] = ".+*\n";
+ int p;
+ char c;
+ BIO *b;
+
+ if (!verbose)
+ return 1;
+
+ b = EVP_PKEY_CTX_get_app_data(ctx);
+ p = EVP_PKEY_CTX_get_keygen_info(ctx, 0);
+ c = (p >= 0 && (size_t)p < sizeof(symbols) - 1) ? symbols[p] : '?';
+
+ BIO_write(b, &c, 1);
+ (void)BIO_flush(b);
+ return 1;
+}