[thirdparty/openssl.git] / apps / genpkey.c

/*
 * Copyright 2006-2017 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the OpenSSL license (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 <stdio.h>
#include <string.h>
#include "apps.h"
#include <openssl/pem.h>
#include <openssl/err.h>
#include <openssl/evp.h>
#ifndef OPENSSL_NO_ENGINE
# include <openssl/engine.h>
#endif

static int init_keygen_file(EVP_PKEY_CTX **pctx, const char *file, ENGINE *e);
static int genpkey_cb(EVP_PKEY_CTX *ctx);

typedef enum OPTION_choice {
    OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
    OPT_ENGINE, OPT_OUTFORM, OPT_OUT, OPT_PASS, OPT_PARAMFILE,
    OPT_ALGORITHM, OPT_PKEYOPT, OPT_GENPARAM, OPT_TEXT, OPT_CIPHER
} OPTION_CHOICE;

const OPTIONS genpkey_options[] = {
    {"help", OPT_HELP, '-', "Display this summary"},
    {"out", OPT_OUT, '>', "Output file"},
    {"outform", OPT_OUTFORM, 'F', "output format (DER or PEM)"},
    {"pass", OPT_PASS, 's', "Output file pass phrase source"},
    {"paramfile", OPT_PARAMFILE, '<', "Parameters file"},
    {"algorithm", OPT_ALGORITHM, 's', "The public key algorithm"},
    {"pkeyopt", OPT_PKEYOPT, 's',
     "Set the public key algorithm option as opt:value"},
    {"genparam", OPT_GENPARAM, '-', "Generate parameters, not key"},
    {"text", OPT_TEXT, '-', "Print the in text"},
    {"", OPT_CIPHER, '-', "Cipher to use to encrypt the key"},
#ifndef OPENSSL_NO_ENGINE
    {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
#endif
    /* This is deliberately last. */
    {OPT_HELP_STR, 1, 1,
     "Order of options may be important!  See the documentation.\n"},
    {NULL}
};

int genpkey_main(int argc, char **argv)
{
    BIO *in = NULL, *out = NULL;
    ENGINE *e = NULL;
    EVP_PKEY *pkey = NULL;
    EVP_PKEY_CTX *ctx = NULL;
    char *outfile = NULL, *passarg = NULL, *pass = NULL, *prog;
    const EVP_CIPHER *cipher = NULL;
    OPTION_CHOICE o;
    int outformat = FORMAT_PEM, text = 0, ret = 1, rv, do_param = 0;
    int private = 0;

    prog = opt_init(argc, argv, genpkey_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:
            ret = 0;
            opt_help(genpkey_options);
            goto end;
        case OPT_OUTFORM:
            if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
                goto opthelp;
            break;
        case OPT_OUT:
            outfile = opt_arg();
            break;
        case OPT_PASS:
            passarg = opt_arg();
            break;
        case OPT_ENGINE:
            e = setup_engine(opt_arg(), 0);
            break;
        case OPT_PARAMFILE:
            if (do_param == 1)
                goto opthelp;
            if (!init_keygen_file(&ctx, opt_arg(), e))
                goto end;
            break;
        case OPT_ALGORITHM:
            if (!init_gen_str(&ctx, opt_arg(), e, do_param))
                goto end;
            break;
        case OPT_PKEYOPT:
            if (ctx == NULL) {
                BIO_printf(bio_err, "%s: No keytype specified.\n", prog);
                goto opthelp;
            }
            if (pkey_ctrl_string(ctx, opt_arg()) <= 0) {
                BIO_printf(bio_err,
                           "%s: Error setting %s parameter:\n",
                           prog, opt_arg());
                ERR_print_errors(bio_err);
                goto end;
            }
            break;
        case OPT_GENPARAM:
            if (ctx != NULL)
                goto opthelp;
            do_param = 1;
            break;
        case OPT_TEXT:
            text = 1;
            break;
        case OPT_CIPHER:
            if (!opt_cipher(opt_unknown(), &cipher)
                || do_param == 1)
                goto opthelp;
        }
    }
    argc = opt_num_rest();
    if (argc != 0)
        goto opthelp;

    private = do_param ? 0 : 1;

    if (ctx == NULL)
        goto opthelp;

    if (!app_passwd(passarg, NULL, &pass, NULL)) {
        BIO_puts(bio_err, "Error getting password\n");
        goto end;
    }

    out = bio_open_owner(outfile, outformat, private);
    if (out == NULL)
        goto end;

    EVP_PKEY_CTX_set_cb(ctx, genpkey_cb);
    EVP_PKEY_CTX_set_app_data(ctx, bio_err);

    if (do_param) {
        if (EVP_PKEY_paramgen(ctx, &pkey) <= 0) {
            BIO_puts(bio_err, "Error generating parameters\n");
            ERR_print_errors(bio_err);
            goto end;
        }
    } else {
        if (EVP_PKEY_keygen(ctx, &pkey) <= 0) {
            BIO_puts(bio_err, "Error generating key\n");
            ERR_print_errors(bio_err);
            goto end;
        }
    }

    if (do_param) {
        rv = PEM_write_bio_Parameters(out, pkey);
    } else if (outformat == FORMAT_PEM) {
        assert(private);
        rv = PEM_write_bio_PrivateKey(out, pkey, cipher, NULL, 0, NULL, pass);
    } else if (outformat == FORMAT_ASN1) {
        assert(private);
        rv = i2d_PrivateKey_bio(out, pkey);
    } else {
        BIO_printf(bio_err, "Bad format specified for key\n");
        goto end;
    }

    if (rv <= 0) {
        BIO_puts(bio_err, "Error writing key\n");
        ERR_print_errors(bio_err);
    }

    if (text) {
        if (do_param)
            rv = EVP_PKEY_print_params(out, pkey, 0, NULL);
        else
            rv = EVP_PKEY_print_private(out, pkey, 0, NULL);

        if (rv <= 0) {
            BIO_puts(bio_err, "Error printing key\n");
            ERR_print_errors(bio_err);
        }
    }

    ret = 0;

 end:
    EVP_PKEY_free(pkey);
    EVP_PKEY_CTX_free(ctx);
    BIO_free_all(out);
    BIO_free(in);
    release_engine(e);
    OPENSSL_free(pass);
    return ret;
}

static int init_keygen_file(EVP_PKEY_CTX **pctx, const char *file, ENGINE *e)
{
    BIO *pbio;
    EVP_PKEY *pkey = NULL;
    EVP_PKEY_CTX *ctx = NULL;
    if (*pctx) {
        BIO_puts(bio_err, "Parameters already set!\n");
        return 0;
    }

    pbio = BIO_new_file(file, "r");
    if (!pbio) {
        BIO_printf(bio_err, "Can't open parameter file %s\n", file);
        return 0;
    }

    pkey = PEM_read_bio_Parameters(pbio, NULL);
    BIO_free(pbio);

    if (!pkey) {
        BIO_printf(bio_err, "Error reading parameter file %s\n", file);
        return 0;
    }

    ctx = EVP_PKEY_CTX_new(pkey, e);
    if (ctx == NULL)
        goto err;
    if (EVP_PKEY_keygen_init(ctx) <= 0)
        goto err;
    EVP_PKEY_free(pkey);
    *pctx = ctx;
    return 1;

 err:
    BIO_puts(bio_err, "Error initializing context\n");
    ERR_print_errors(bio_err);
    EVP_PKEY_CTX_free(ctx);
    EVP_PKEY_free(pkey);
    return 0;

}

int init_gen_str(EVP_PKEY_CTX **pctx,
                 const char *algname, ENGINE *e, int do_param)
{
    EVP_PKEY_CTX *ctx = NULL;
    const EVP_PKEY_ASN1_METHOD *ameth;
    ENGINE *tmpeng = NULL;
    int pkey_id;

    if (*pctx) {
        BIO_puts(bio_err, "Algorithm already set!\n");
        return 0;
    }

    ameth = EVP_PKEY_asn1_find_str(&tmpeng, algname, -1);

#ifndef OPENSSL_NO_ENGINE
    if (!ameth && e)
        ameth = ENGINE_get_pkey_asn1_meth_str(e, algname, -1);
#endif

    if (!ameth) {
        BIO_printf(bio_err, "Algorithm %s not found\n", algname);
        return 0;
    }

    ERR_clear_error();

    EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, ameth);
#ifndef OPENSSL_NO_ENGINE
    ENGINE_finish(tmpeng);
#endif
    ctx = EVP_PKEY_CTX_new_id(pkey_id, e);

    if (!ctx)
        goto err;
    if (do_param) {
        if (EVP_PKEY_paramgen_init(ctx) <= 0)
            goto err;
    } else {
        if (EVP_PKEY_keygen_init(ctx) <= 0)
            goto err;
    }

    *pctx = ctx;
    return 1;

 err:
    BIO_printf(bio_err, "Error initializing %s context\n", algname);
    ERR_print_errors(bio_err);
    EVP_PKEY_CTX_free(ctx);
    return 0;

}

static int genpkey_cb(EVP_PKEY_CTX *ctx)
{
    char c = '*';
    BIO *b = EVP_PKEY_CTX_get_app_data(ctx);
    int p;
    p = EVP_PKEY_CTX_get_keygen_info(ctx, 0);
    if (p == 0)
        c = '.';
    if (p == 1)
        c = '+';
    if (p == 2)
        c = '*';
    if (p == 3)
        c = '\n';
    BIO_write(b, &c, 1);
    (void)BIO_flush(b);
    return 1;
}
Commit	Line	Data
0f113f3e	1	/*
2234212c	2	* Copyright 2006-2017 The OpenSSL Project Authors. All Rights Reserved.
f5cda4cb	3	*
846e33c7 RS	4	* Licensed under the OpenSSL license (the "License"). You may not use
	5	* this file except in compliance with the License. You can obtain a copy
	6	* in the file LICENSE in the source distribution or at
	7	* https://www.openssl.org/source/license.html
f5cda4cb	8	*/
846e33c7	9
f5cda4cb DSH	10	#include <stdio.h>
	11	#include <string.h>
	12	#include "apps.h"
	13	#include <openssl/pem.h>
	14	#include <openssl/err.h>
	15	#include <openssl/evp.h>
01b8b3c7	16	#ifndef OPENSSL_NO_ENGINE
0f113f3e	17	# include <openssl/engine.h>
01b8b3c7	18	#endif
f5cda4cb	19
7e1b7485	20	static int init_keygen_file(EVP_PKEY_CTX *pctx, const char file, ENGINE *e);
f5cda4cb DSH	21	static int genpkey_cb(EVP_PKEY_CTX *ctx);
f5cda4cb DSH	22
7e1b7485 RS	23	typedef enum OPTION_choice {
	24	OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
	25	OPT_ENGINE, OPT_OUTFORM, OPT_OUT, OPT_PASS, OPT_PARAMFILE,
	26	OPT_ALGORITHM, OPT_PKEYOPT, OPT_GENPARAM, OPT_TEXT, OPT_CIPHER
	27	} OPTION_CHOICE;
	28
44c83ebd	29	const OPTIONS genpkey_options[] = {
7e1b7485 RS	30	{"help", OPT_HELP, '-', "Display this summary"},
	31	{"out", OPT_OUT, '>', "Output file"},
	32	{"outform", OPT_OUTFORM, 'F', "output format (DER or PEM)"},
	33	{"pass", OPT_PASS, 's', "Output file pass phrase source"},
	34	{"paramfile", OPT_PARAMFILE, '<', "Parameters file"},
	35	{"algorithm", OPT_ALGORITHM, 's', "The public key algorithm"},
	36	{"pkeyopt", OPT_PKEYOPT, 's',
	37	"Set the public key algorithm option as opt:value"},
	38	{"genparam", OPT_GENPARAM, '-', "Generate parameters, not key"},
	39	{"text", OPT_TEXT, '-', "Print the in text"},
	40	{"", OPT_CIPHER, '-', "Cipher to use to encrypt the key"},
	41	#ifndef OPENSSL_NO_ENGINE
	42	{"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
	43	#endif
9c3bcfa0	44	/* This is deliberately last. */
7e1b7485 RS	45	{OPT_HELP_STR, 1, 1,
	46	"Order of options may be important! See the documentation.\n"},
	47	{NULL}
	48	};
f5cda4cb	49
7e1b7485	50	int genpkey_main(int argc, char **argv)
0f113f3e	51	{
0f113f3e	52	BIO in = NULL, out = NULL;
7e1b7485	53	ENGINE *e = NULL;
0f113f3e MC	54	EVP_PKEY *pkey = NULL;
0f113f3e MC	55	EVP_PKEY_CTX *ctx = NULL;
7e1b7485 RS	56	char outfile = NULL, passarg = NULL, pass = NULL, prog;
	57	const EVP_CIPHER *cipher = NULL;
	58	OPTION_CHOICE o;
	59	int outformat = FORMAT_PEM, text = 0, ret = 1, rv, do_param = 0;
3b061a00	60	int private = 0;
7e1b7485 RS	61
	62	prog = opt_init(argc, argv, genpkey_options);
	63	while ((o = opt_next()) != OPT_EOF) {
	64	switch (o) {
	65	case OPT_EOF:
	66	case OPT_ERR:
	67	opthelp:
	68	BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
	69	goto end;
	70	case OPT_HELP:
	71	ret = 0;
	72	opt_help(genpkey_options);
	73	goto end;
	74	case OPT_OUTFORM:
	75	if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
	76	goto opthelp;
	77	break;
	78	case OPT_OUT:
	79	outfile = opt_arg();
	80	break;
7e1b7485 RS	81	case OPT_PASS:
	82	passarg = opt_arg();
	83	break;
7e1b7485 RS	84	case OPT_ENGINE:
	85	e = setup_engine(opt_arg(), 0);
	86	break;
7e1b7485	87	case OPT_PARAMFILE:
0f113f3e	88	if (do_param == 1)
7e1b7485 RS	89	goto opthelp;
7e1b7485 RS	90	if (!init_keygen_file(&ctx, opt_arg(), e))
0f113f3e	91	goto end;
7e1b7485 RS	92	break;
	93	case OPT_ALGORITHM:
	94	if (!init_gen_str(&ctx, opt_arg(), e, do_param))
0f113f3e	95	goto end;
7e1b7485 RS	96	break;
	97	case OPT_PKEYOPT:
	98	if (ctx == NULL) {
	99	BIO_printf(bio_err, "%s: No keytype specified.\n", prog);
	100	goto opthelp;
	101	}
	102	if (pkey_ctrl_string(ctx, opt_arg()) <= 0) {
	103	BIO_printf(bio_err,
	104	"%s: Error setting %s parameter:\n",
	105	prog, opt_arg());
0f113f3e MC	106	ERR_print_errors(bio_err);
	107	goto end;
	108	}
7e1b7485 RS	109	break;
	110	case OPT_GENPARAM:
	111	if (ctx != NULL)
	112	goto opthelp;
0f113f3e	113	do_param = 1;
7e1b7485 RS	114	break;
7e1b7485 RS	115	case OPT_TEXT:
0f113f3e	116	text = 1;
7e1b7485 RS	117	break;
	118	case OPT_CIPHER:
	119	if (!opt_cipher(opt_unknown(), &cipher)
	120	\|\| do_param == 1)
	121	goto opthelp;
0f113f3e	122	}
0f113f3e	123	}
7e1b7485	124	argc = opt_num_rest();
03358517 KR	125	if (argc != 0)
	126	goto opthelp;
	127
3b061a00	128	private = do_param ? 0 : 1;
0f113f3e	129
7e1b7485 RS	130	if (ctx == NULL)
7e1b7485 RS	131	goto opthelp;
0f113f3e	132
7e1b7485	133	if (!app_passwd(passarg, NULL, &pass, NULL)) {
0f113f3e MC	134	BIO_puts(bio_err, "Error getting password\n");
	135	goto end;
	136	}
	137
bdd58d98	138	out = bio_open_owner(outfile, outformat, private);
7e1b7485 RS	139	if (out == NULL)
7e1b7485 RS	140	goto end;
0f113f3e MC	141
	142	EVP_PKEY_CTX_set_cb(ctx, genpkey_cb);
	143	EVP_PKEY_CTX_set_app_data(ctx, bio_err);
	144
	145	if (do_param) {
	146	if (EVP_PKEY_paramgen(ctx, &pkey) <= 0) {
	147	BIO_puts(bio_err, "Error generating parameters\n");
	148	ERR_print_errors(bio_err);
	149	goto end;
	150	}
	151	} else {
	152	if (EVP_PKEY_keygen(ctx, &pkey) <= 0) {
	153	BIO_puts(bio_err, "Error generating key\n");
	154	ERR_print_errors(bio_err);
	155	goto end;
	156	}
	157	}
	158
2234212c	159	if (do_param) {
0f113f3e	160	rv = PEM_write_bio_Parameters(out, pkey);
2234212c	161	} else if (outformat == FORMAT_PEM) {
3b061a00	162	assert(private);
0f113f3e	163	rv = PEM_write_bio_PrivateKey(out, pkey, cipher, NULL, 0, NULL, pass);
3b061a00 RS	164	} else if (outformat == FORMAT_ASN1) {
3b061a00 RS	165	assert(private);
0f113f3e	166	rv = i2d_PrivateKey_bio(out, pkey);
3b061a00	167	} else {
0f113f3e MC	168	BIO_printf(bio_err, "Bad format specified for key\n");
	169	goto end;
	170	}
	171
	172	if (rv <= 0) {
	173	BIO_puts(bio_err, "Error writing key\n");
	174	ERR_print_errors(bio_err);
	175	}
	176
	177	if (text) {
	178	if (do_param)
	179	rv = EVP_PKEY_print_params(out, pkey, 0, NULL);
	180	else
	181	rv = EVP_PKEY_print_private(out, pkey, 0, NULL);
	182
	183	if (rv <= 0) {
	184	BIO_puts(bio_err, "Error printing key\n");
	185	ERR_print_errors(bio_err);
	186	}
	187	}
	188
	189	ret = 0;
	190
	191	end:
c5ba2d99 RS	192	EVP_PKEY_free(pkey);
c5ba2d99 RS	193	EVP_PKEY_CTX_free(ctx);
ca3a82c3	194	BIO_free_all(out);
0f113f3e	195	BIO_free(in);
dd1abd44	196	release_engine(e);
b548a1f1	197	OPENSSL_free(pass);
0f113f3e MC	198	return ret;
0f113f3e MC	199	}
f5cda4cb	200
7e1b7485	201	static int init_keygen_file(EVP_PKEY_CTX *pctx, const char file, ENGINE *e)
0f113f3e MC	202	{
	203	BIO *pbio;
	204	EVP_PKEY *pkey = NULL;
	205	EVP_PKEY_CTX *ctx = NULL;
	206	if (*pctx) {
7e1b7485	207	BIO_puts(bio_err, "Parameters already set!\n");
0f113f3e MC	208	return 0;
	209	}
	210
	211	pbio = BIO_new_file(file, "r");
	212	if (!pbio) {
7e1b7485	213	BIO_printf(bio_err, "Can't open parameter file %s\n", file);
0f113f3e MC	214	return 0;
	215	}
	216
	217	pkey = PEM_read_bio_Parameters(pbio, NULL);
	218	BIO_free(pbio);
	219
	220	if (!pkey) {
	221	BIO_printf(bio_err, "Error reading parameter file %s\n", file);
	222	return 0;
	223	}
	224
	225	ctx = EVP_PKEY_CTX_new(pkey, e);
96487cdd	226	if (ctx == NULL)
0f113f3e MC	227	goto err;
	228	if (EVP_PKEY_keygen_init(ctx) <= 0)
	229	goto err;
	230	EVP_PKEY_free(pkey);
	231	*pctx = ctx;
	232	return 1;
	233
	234	err:
7e1b7485 RS	235	BIO_puts(bio_err, "Error initializing context\n");
7e1b7485 RS	236	ERR_print_errors(bio_err);
c5ba2d99 RS	237	EVP_PKEY_CTX_free(ctx);
c5ba2d99 RS	238	EVP_PKEY_free(pkey);
0f113f3e MC	239	return 0;
	240
	241	}
f5cda4cb	242
7e1b7485	243	int init_gen_str(EVP_PKEY_CTX **pctx,
0f113f3e MC	244	const char algname, ENGINE e, int do_param)
	245	{
	246	EVP_PKEY_CTX *ctx = NULL;
	247	const EVP_PKEY_ASN1_METHOD *ameth;
	248	ENGINE *tmpeng = NULL;
	249	int pkey_id;
01b8b3c7	250
0f113f3e	251	if (*pctx) {
7e1b7485	252	BIO_puts(bio_err, "Algorithm already set!\n");
0f113f3e MC	253	return 0;
0f113f3e MC	254	}
b3c6a331	255
0f113f3e	256	ameth = EVP_PKEY_asn1_find_str(&tmpeng, algname, -1);
f5cda4cb	257
70531c14	258	#ifndef OPENSSL_NO_ENGINE
0f113f3e MC	259	if (!ameth && e)
0f113f3e MC	260	ameth = ENGINE_get_pkey_asn1_meth_str(e, algname, -1);
70531c14	261	#endif
b3c6a331	262
0f113f3e MC	263	if (!ameth) {
	264	BIO_printf(bio_err, "Algorithm %s not found\n", algname);
	265	return 0;
	266	}
f5cda4cb	267
0f113f3e	268	ERR_clear_error();
b3c6a331	269
0f113f3e	270	EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, ameth);
01b8b3c7	271	#ifndef OPENSSL_NO_ENGINE
7c96dbcd	272	ENGINE_finish(tmpeng);
01b8b3c7	273	#endif
0f113f3e MC	274	ctx = EVP_PKEY_CTX_new_id(pkey_id, e);
	275
	276	if (!ctx)
	277	goto err;
	278	if (do_param) {
	279	if (EVP_PKEY_paramgen_init(ctx) <= 0)
	280	goto err;
	281	} else {
	282	if (EVP_PKEY_keygen_init(ctx) <= 0)
	283	goto err;
	284	}
	285
	286	*pctx = ctx;
	287	return 1;
	288
	289	err:
7e1b7485 RS	290	BIO_printf(bio_err, "Error initializing %s context\n", algname);
7e1b7485 RS	291	ERR_print_errors(bio_err);
c5ba2d99	292	EVP_PKEY_CTX_free(ctx);
0f113f3e MC	293	return 0;
	294
	295	}
f5cda4cb DSH	296
f5cda4cb DSH	297	static int genpkey_cb(EVP_PKEY_CTX *ctx)
0f113f3e MC	298	{
	299	char c = '*';
	300	BIO *b = EVP_PKEY_CTX_get_app_data(ctx);
	301	int p;
	302	p = EVP_PKEY_CTX_get_keygen_info(ctx, 0);
	303	if (p == 0)
	304	c = '.';
	305	if (p == 1)
	306	c = '+';
	307	if (p == 2)
	308	c = '*';
	309	if (p == 3)
	310	c = '\n';
	311	BIO_write(b, &c, 1);
	312	(void)BIO_flush(b);
	313	return 1;
	314	}