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

/*
 * Copyright 2006-2018 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 "progs.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;
            if (EVP_CIPHER_mode(cipher) == EVP_CIPH_GCM_MODE ||
                EVP_CIPHER_mode(cipher) == EVP_CIPH_CCM_MODE ||
                EVP_CIPHER_mode(cipher) == EVP_CIPH_XTS_MODE ||
                EVP_CIPHER_mode(cipher) == EVP_CIPH_OCB_MODE) {
                BIO_printf(bio_err, "%s: cipher mode not supported\n", prog);
                goto end;
            }
        }
    }
    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	/*
6738bf14	2	* Copyright 2006-2018 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"
dab2cd68	13	#include "progs.h"
f5cda4cb DSH	14	#include <openssl/pem.h>
	15	#include <openssl/err.h>
	16	#include <openssl/evp.h>
01b8b3c7	17	#ifndef OPENSSL_NO_ENGINE
0f113f3e	18	# include <openssl/engine.h>
01b8b3c7	19	#endif
f5cda4cb	20
7e1b7485	21	static int init_keygen_file(EVP_PKEY_CTX *pctx, const char file, ENGINE *e);
f5cda4cb DSH	22	static int genpkey_cb(EVP_PKEY_CTX *ctx);
f5cda4cb DSH	23
7e1b7485 RS	24	typedef enum OPTION_choice {
	25	OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
	26	OPT_ENGINE, OPT_OUTFORM, OPT_OUT, OPT_PASS, OPT_PARAMFILE,
	27	OPT_ALGORITHM, OPT_PKEYOPT, OPT_GENPARAM, OPT_TEXT, OPT_CIPHER
	28	} OPTION_CHOICE;
	29
44c83ebd	30	const OPTIONS genpkey_options[] = {
7e1b7485 RS	31	{"help", OPT_HELP, '-', "Display this summary"},
	32	{"out", OPT_OUT, '>', "Output file"},
	33	{"outform", OPT_OUTFORM, 'F', "output format (DER or PEM)"},
	34	{"pass", OPT_PASS, 's', "Output file pass phrase source"},
	35	{"paramfile", OPT_PARAMFILE, '<', "Parameters file"},
	36	{"algorithm", OPT_ALGORITHM, 's', "The public key algorithm"},
	37	{"pkeyopt", OPT_PKEYOPT, 's',
	38	"Set the public key algorithm option as opt:value"},
	39	{"genparam", OPT_GENPARAM, '-', "Generate parameters, not key"},
	40	{"text", OPT_TEXT, '-', "Print the in text"},
	41	{"", OPT_CIPHER, '-', "Cipher to use to encrypt the key"},
	42	#ifndef OPENSSL_NO_ENGINE
	43	{"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
	44	#endif
9c3bcfa0	45	/* This is deliberately last. */
7e1b7485 RS	46	{OPT_HELP_STR, 1, 1,
	47	"Order of options may be important! See the documentation.\n"},
	48	{NULL}
	49	};
f5cda4cb	50
7e1b7485	51	int genpkey_main(int argc, char **argv)
0f113f3e	52	{
0f113f3e	53	BIO in = NULL, out = NULL;
7e1b7485	54	ENGINE *e = NULL;
0f113f3e MC	55	EVP_PKEY *pkey = NULL;
0f113f3e MC	56	EVP_PKEY_CTX *ctx = NULL;
7e1b7485 RS	57	char outfile = NULL, passarg = NULL, pass = NULL, prog;
	58	const EVP_CIPHER *cipher = NULL;
	59	OPTION_CHOICE o;
	60	int outformat = FORMAT_PEM, text = 0, ret = 1, rv, do_param = 0;
3b061a00	61	int private = 0;
7e1b7485 RS	62
	63	prog = opt_init(argc, argv, genpkey_options);
	64	while ((o = opt_next()) != OPT_EOF) {
	65	switch (o) {
	66	case OPT_EOF:
	67	case OPT_ERR:
	68	opthelp:
	69	BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
	70	goto end;
	71	case OPT_HELP:
	72	ret = 0;
	73	opt_help(genpkey_options);
	74	goto end;
	75	case OPT_OUTFORM:
	76	if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
	77	goto opthelp;
	78	break;
	79	case OPT_OUT:
	80	outfile = opt_arg();
	81	break;
7e1b7485 RS	82	case OPT_PASS:
	83	passarg = opt_arg();
	84	break;
7e1b7485 RS	85	case OPT_ENGINE:
	86	e = setup_engine(opt_arg(), 0);
	87	break;
7e1b7485	88	case OPT_PARAMFILE:
0f113f3e	89	if (do_param == 1)
7e1b7485 RS	90	goto opthelp;
7e1b7485 RS	91	if (!init_keygen_file(&ctx, opt_arg(), e))
0f113f3e	92	goto end;
7e1b7485 RS	93	break;
	94	case OPT_ALGORITHM:
	95	if (!init_gen_str(&ctx, opt_arg(), e, do_param))
0f113f3e	96	goto end;
7e1b7485 RS	97	break;
	98	case OPT_PKEYOPT:
	99	if (ctx == NULL) {
	100	BIO_printf(bio_err, "%s: No keytype specified.\n", prog);
	101	goto opthelp;
	102	}
	103	if (pkey_ctrl_string(ctx, opt_arg()) <= 0) {
	104	BIO_printf(bio_err,
	105	"%s: Error setting %s parameter:\n",
	106	prog, opt_arg());
0f113f3e MC	107	ERR_print_errors(bio_err);
	108	goto end;
	109	}
7e1b7485 RS	110	break;
	111	case OPT_GENPARAM:
	112	if (ctx != NULL)
	113	goto opthelp;
0f113f3e	114	do_param = 1;
7e1b7485 RS	115	break;
7e1b7485 RS	116	case OPT_TEXT:
0f113f3e	117	text = 1;
7e1b7485 RS	118	break;
	119	case OPT_CIPHER:
	120	if (!opt_cipher(opt_unknown(), &cipher)
	121	\|\| do_param == 1)
	122	goto opthelp;
49c9c1b3 DO	123	if (EVP_CIPHER_mode(cipher) == EVP_CIPH_GCM_MODE \|\|
	124	EVP_CIPHER_mode(cipher) == EVP_CIPH_CCM_MODE \|\|
	125	EVP_CIPHER_mode(cipher) == EVP_CIPH_XTS_MODE \|\|
	126	EVP_CIPHER_mode(cipher) == EVP_CIPH_OCB_MODE) {
	127	BIO_printf(bio_err, "%s: cipher mode not supported\n", prog);
	128	goto end;
	129	}
0f113f3e	130	}
0f113f3e	131	}
7e1b7485	132	argc = opt_num_rest();
03358517 KR	133	if (argc != 0)
	134	goto opthelp;
	135
3b061a00	136	private = do_param ? 0 : 1;
0f113f3e	137
7e1b7485 RS	138	if (ctx == NULL)
7e1b7485 RS	139	goto opthelp;
0f113f3e	140
7e1b7485	141	if (!app_passwd(passarg, NULL, &pass, NULL)) {
0f113f3e MC	142	BIO_puts(bio_err, "Error getting password\n");
	143	goto end;
	144	}
	145
bdd58d98	146	out = bio_open_owner(outfile, outformat, private);
7e1b7485 RS	147	if (out == NULL)
7e1b7485 RS	148	goto end;
0f113f3e MC	149
	150	EVP_PKEY_CTX_set_cb(ctx, genpkey_cb);
	151	EVP_PKEY_CTX_set_app_data(ctx, bio_err);
	152
	153	if (do_param) {
	154	if (EVP_PKEY_paramgen(ctx, &pkey) <= 0) {
	155	BIO_puts(bio_err, "Error generating parameters\n");
	156	ERR_print_errors(bio_err);
	157	goto end;
	158	}
	159	} else {
	160	if (EVP_PKEY_keygen(ctx, &pkey) <= 0) {
	161	BIO_puts(bio_err, "Error generating key\n");
	162	ERR_print_errors(bio_err);
	163	goto end;
	164	}
	165	}
	166
2234212c	167	if (do_param) {
0f113f3e	168	rv = PEM_write_bio_Parameters(out, pkey);
2234212c	169	} else if (outformat == FORMAT_PEM) {
3b061a00	170	assert(private);
0f113f3e	171	rv = PEM_write_bio_PrivateKey(out, pkey, cipher, NULL, 0, NULL, pass);
3b061a00 RS	172	} else if (outformat == FORMAT_ASN1) {
3b061a00 RS	173	assert(private);
0f113f3e	174	rv = i2d_PrivateKey_bio(out, pkey);
3b061a00	175	} else {
0f113f3e MC	176	BIO_printf(bio_err, "Bad format specified for key\n");
	177	goto end;
	178	}
	179
	180	if (rv <= 0) {
	181	BIO_puts(bio_err, "Error writing key\n");
	182	ERR_print_errors(bio_err);
	183	}
	184
	185	if (text) {
	186	if (do_param)
	187	rv = EVP_PKEY_print_params(out, pkey, 0, NULL);
	188	else
	189	rv = EVP_PKEY_print_private(out, pkey, 0, NULL);
	190
	191	if (rv <= 0) {
	192	BIO_puts(bio_err, "Error printing key\n");
	193	ERR_print_errors(bio_err);
	194	}
	195	}
	196
	197	ret = 0;
	198
	199	end:
c5ba2d99 RS	200	EVP_PKEY_free(pkey);
c5ba2d99 RS	201	EVP_PKEY_CTX_free(ctx);
ca3a82c3	202	BIO_free_all(out);
0f113f3e	203	BIO_free(in);
dd1abd44	204	release_engine(e);
b548a1f1	205	OPENSSL_free(pass);
0f113f3e MC	206	return ret;
0f113f3e MC	207	}
f5cda4cb	208
7e1b7485	209	static int init_keygen_file(EVP_PKEY_CTX *pctx, const char file, ENGINE *e)
0f113f3e MC	210	{
	211	BIO *pbio;
	212	EVP_PKEY *pkey = NULL;
	213	EVP_PKEY_CTX *ctx = NULL;
	214	if (*pctx) {
7e1b7485	215	BIO_puts(bio_err, "Parameters already set!\n");
0f113f3e MC	216	return 0;
	217	}
	218
	219	pbio = BIO_new_file(file, "r");
	220	if (!pbio) {
7e1b7485	221	BIO_printf(bio_err, "Can't open parameter file %s\n", file);
0f113f3e MC	222	return 0;
	223	}
	224
	225	pkey = PEM_read_bio_Parameters(pbio, NULL);
	226	BIO_free(pbio);
	227
	228	if (!pkey) {
	229	BIO_printf(bio_err, "Error reading parameter file %s\n", file);
	230	return 0;
	231	}
	232
	233	ctx = EVP_PKEY_CTX_new(pkey, e);
96487cdd	234	if (ctx == NULL)
0f113f3e MC	235	goto err;
	236	if (EVP_PKEY_keygen_init(ctx) <= 0)
	237	goto err;
	238	EVP_PKEY_free(pkey);
	239	*pctx = ctx;
	240	return 1;
	241
	242	err:
7e1b7485 RS	243	BIO_puts(bio_err, "Error initializing context\n");
7e1b7485 RS	244	ERR_print_errors(bio_err);
c5ba2d99 RS	245	EVP_PKEY_CTX_free(ctx);
c5ba2d99 RS	246	EVP_PKEY_free(pkey);
0f113f3e MC	247	return 0;
	248
	249	}
f5cda4cb	250
7e1b7485	251	int init_gen_str(EVP_PKEY_CTX **pctx,
0f113f3e MC	252	const char algname, ENGINE e, int do_param)
	253	{
	254	EVP_PKEY_CTX *ctx = NULL;
	255	const EVP_PKEY_ASN1_METHOD *ameth;
	256	ENGINE *tmpeng = NULL;
	257	int pkey_id;
01b8b3c7	258
0f113f3e	259	if (*pctx) {
7e1b7485	260	BIO_puts(bio_err, "Algorithm already set!\n");
0f113f3e MC	261	return 0;
0f113f3e MC	262	}
b3c6a331	263
0f113f3e	264	ameth = EVP_PKEY_asn1_find_str(&tmpeng, algname, -1);
f5cda4cb	265
70531c14	266	#ifndef OPENSSL_NO_ENGINE
0f113f3e MC	267	if (!ameth && e)
0f113f3e MC	268	ameth = ENGINE_get_pkey_asn1_meth_str(e, algname, -1);
70531c14	269	#endif
b3c6a331	270
0f113f3e MC	271	if (!ameth) {
	272	BIO_printf(bio_err, "Algorithm %s not found\n", algname);
	273	return 0;
	274	}
f5cda4cb	275
0f113f3e	276	ERR_clear_error();
b3c6a331	277
0f113f3e	278	EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, ameth);
01b8b3c7	279	#ifndef OPENSSL_NO_ENGINE
7c96dbcd	280	ENGINE_finish(tmpeng);
01b8b3c7	281	#endif
0f113f3e MC	282	ctx = EVP_PKEY_CTX_new_id(pkey_id, e);
	283
	284	if (!ctx)
	285	goto err;
	286	if (do_param) {
	287	if (EVP_PKEY_paramgen_init(ctx) <= 0)
	288	goto err;
	289	} else {
	290	if (EVP_PKEY_keygen_init(ctx) <= 0)
	291	goto err;
	292	}
	293
	294	*pctx = ctx;
	295	return 1;
	296
	297	err:
7e1b7485 RS	298	BIO_printf(bio_err, "Error initializing %s context\n", algname);
7e1b7485 RS	299	ERR_print_errors(bio_err);
c5ba2d99	300	EVP_PKEY_CTX_free(ctx);
0f113f3e MC	301	return 0;
	302
	303	}
f5cda4cb DSH	304
f5cda4cb DSH	305	static int genpkey_cb(EVP_PKEY_CTX *ctx)
0f113f3e MC	306	{
	307	char c = '*';
	308	BIO *b = EVP_PKEY_CTX_get_app_data(ctx);
	309	int p;
	310	p = EVP_PKEY_CTX_get_keygen_info(ctx, 0);
	311	if (p == 0)
	312	c = '.';
	313	if (p == 1)
	314	c = '+';
	315	if (p == 2)
	316	c = '*';
	317	if (p == 3)
	318	c = '\n';
	319	BIO_write(b, &c, 1);
	320	(void)BIO_flush(b);
	321	return 1;
	322	}