/*
- * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
*
- * Licensed under the OpenSSL license (the "License"). You may not use
+ * Licensed under the Apache License 2.0 (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/x509.h>
# include <openssl/pem.h>
+static int verbose = 0;
+
static int dsa_cb(int p, int n, BN_GENCB *cb);
typedef enum OPTION_choice {
OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
OPT_INFORM, OPT_OUTFORM, OPT_IN, OPT_OUT, OPT_TEXT, OPT_C,
- OPT_NOOUT, OPT_GENKEY, OPT_ENGINE, OPT_R_ENUM
+ OPT_NOOUT, OPT_GENKEY, OPT_ENGINE, OPT_VERBOSE,
+ OPT_R_ENUM
} OPTION_CHOICE;
const OPTIONS dsaparam_options[] = {
+ {OPT_HELP_STR, 1, '-', "Usage: %s [options] [numbits]\n"},
+
+ OPT_SECTION("General"),
{"help", OPT_HELP, '-', "Display this summary"},
- {"inform", OPT_INFORM, 'F', "Input format - DER or PEM"},
+# ifndef OPENSSL_NO_ENGINE
+ {"engine", OPT_ENGINE, 's', "Use engine e, possibly a hardware device"},
+# endif
+
+ OPT_SECTION("Input"),
{"in", OPT_IN, '<', "Input file"},
- {"outform", OPT_OUTFORM, 'F', "Output format - DER or PEM"},
+ {"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,
-# ifndef OPENSSL_NO_ENGINE
- {"engine", OPT_ENGINE, 's', "Use engine e, possibly a hardware device"},
-# endif
+
+ OPT_PARAMETERS(),
+ {"numbits", 0, 0, "Number of bits if generating parameters (optional)"},
{NULL}
};
case OPT_NOOUT:
noout = 1;
break;
+ case OPT_VERBOSE:
+ verbose = 1;
+ break;
}
}
argc = opt_num_rest();
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);
+
cb = BN_GENCB_new();
if (cb == NULL) {
BIO_printf(bio_err, "Error allocating BN_GENCB object\n");
BIO_printf(bio_err, "Error allocating DSA object\n");
goto end;
}
- BIO_printf(bio_err, "Generating DSA parameters, %d bit long prime\n",
- num);
- BIO_printf(bio_err, "This could take some time\n");
+ 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 (!DSA_generate_parameters_ex(dsa, num, NULL, 0, NULL, NULL, cb)) {
ERR_print_errors(bio_err);
BIO_printf(bio_err, "Error, DSA key generation failed\n");
data = app_malloc(len + 20, "BN space");
- BIO_printf(bio_out, "DSA *get_dsa%d()\n{\n", bits_p);
- print_bignum_var(bio_out, p, "dsap", len, data);
- print_bignum_var(bio_out, q, "dsaq", len, data);
- print_bignum_var(bio_out, g, "dsag", len, data);
+ 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, " dsa->p = BN_bin2bn(dsap_%d, sizeof(dsap_%d), NULL);\n",
- bits_p, bits_p);
- BIO_printf(bio_out, " dsa->q = BN_bin2bn(dsaq_%d, sizeof(dsaq_%d), NULL);\n",
- bits_p, bits_p);
- BIO_printf(bio_out, " dsa->g = BN_bin2bn(dsag_%d, sizeof(dsag_%d), NULL);\n",
- bits_p, bits_p);
- BIO_printf(bio_out, " if (!dsa->p || !dsa->q || !dsa->g) {\n"
- " DSA_free(dsa);\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");
+ " 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);
static int 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';
+ static const char symbols[] = ".+*\n";
+ char c = (p >= 0 && (size_t)p < sizeof(symbols) - 1) ? symbols[p] : '?';
+
+ if (!verbose)
+ return 1;
+
BIO_write(BN_GENCB_get_arg(cb), &c, 1);
(void)BIO_flush(BN_GENCB_get_arg(cb));
return 1;