[thirdparty/openssl.git] / providers / implementations / keymgmt / dsa_kmgmt.c

/*
 * Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
 *
 * 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/core_numbers.h>
#include <openssl/core_names.h>
#include <openssl/bn.h>
#include <openssl/params.h>
#include "internal/param_build.h"
#include "crypto/dsa.h"
#include "prov/implementations.h"
#include "prov/providercommon.h"
#include "prov/provider_ctx.h"
#include "crypto/dsa.h"

static OSSL_OP_keymgmt_new_fn dsa_newdata;
static OSSL_OP_keymgmt_free_fn dsa_freedata;
static OSSL_OP_keymgmt_get_params_fn dsa_get_params;
static OSSL_OP_keymgmt_gettable_params_fn dsa_gettable_params;
static OSSL_OP_keymgmt_has_fn dsa_has;
static OSSL_OP_keymgmt_import_fn dsa_import;
static OSSL_OP_keymgmt_import_types_fn dsa_import_types;
static OSSL_OP_keymgmt_export_fn dsa_export;
static OSSL_OP_keymgmt_export_types_fn dsa_export_types;

#define DSA_DEFAULT_MD "SHA256"
#define DSA_POSSIBLE_SELECTIONS                 \
    (OSSL_KEYMGMT_SELECT_KEYPAIR | OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS)

static int params_to_domparams(DSA *dsa, const OSSL_PARAM params[])
{
    const OSSL_PARAM *param_p, *param_q, *param_g;
    BIGNUM *p = NULL, *q = NULL, *g = NULL;

    if (dsa == NULL)
        return 0;

    param_p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_P);
    param_q = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_Q);
    param_g = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_G);

    if ((param_p != NULL && !OSSL_PARAM_get_BN(param_p, &p))
        || (param_q != NULL && !OSSL_PARAM_get_BN(param_q, &q))
        || (param_g != NULL && !OSSL_PARAM_get_BN(param_g, &g)))
        goto err;

    if (!DSA_set0_pqg(dsa, p, q, g))
        goto err;

    return 1;

 err:
    BN_free(p);
    BN_free(q);
    BN_free(g);
    return 0;
}

static int domparams_to_params(DSA *dsa, OSSL_PARAM_BLD *tmpl)
{
    const BIGNUM *dsa_p = NULL, *dsa_q = NULL, *dsa_g = NULL;

    if (dsa == NULL)
        return 0;

    DSA_get0_pqg(dsa, &dsa_p, &dsa_q, &dsa_g);
    if (dsa_p != NULL
        && !ossl_param_bld_push_BN(tmpl, OSSL_PKEY_PARAM_FFC_P, dsa_p))
        return 0;
    if (dsa_q != NULL
        && !ossl_param_bld_push_BN(tmpl, OSSL_PKEY_PARAM_FFC_Q, dsa_q))
        return 0;
    if (dsa_g != NULL
        && !ossl_param_bld_push_BN(tmpl, OSSL_PKEY_PARAM_FFC_G, dsa_g))
        return 0;

    return 1;
}

static int params_to_key(DSA *dsa, const OSSL_PARAM params[])
{
    const OSSL_PARAM *param_priv_key, *param_pub_key;
    BIGNUM *priv_key = NULL, *pub_key = NULL;

    if (dsa == NULL)
        return 0;

    if (!params_to_domparams(dsa, params))
        return 0;

    param_priv_key =
        OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_DSA_PRIV_KEY);
    param_pub_key =
        OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_DSA_PUB_KEY);

    /*
     * DSA documentation says that a public key must be present if a private key
     * is.
     */
    if (param_priv_key != NULL && param_pub_key == NULL)
        return 0;

    if ((param_priv_key != NULL
         && !OSSL_PARAM_get_BN(param_priv_key, &priv_key))
        || (param_pub_key != NULL
            && !OSSL_PARAM_get_BN(param_pub_key, &pub_key)))
        goto err;

    if (pub_key != NULL && !DSA_set0_key(dsa, pub_key, priv_key))
        goto err;

    return 1;

 err:
    BN_free(priv_key);
    BN_free(pub_key);
    return 0;
}

static int key_to_params(DSA *dsa, OSSL_PARAM_BLD *tmpl)
{
    const BIGNUM *priv_key = NULL, *pub_key = NULL;

    if (dsa == NULL)
        return 0;
    if (!domparams_to_params(dsa, tmpl))
        return 0;

    DSA_get0_key(dsa, &pub_key, &priv_key);
    if (priv_key != NULL
        && !ossl_param_bld_push_BN(tmpl, OSSL_PKEY_PARAM_DSA_PRIV_KEY, priv_key))
        return 0;
    if (pub_key != NULL
        && !ossl_param_bld_push_BN(tmpl, OSSL_PKEY_PARAM_DSA_PUB_KEY, pub_key))
        return 0;

    return 1;
}

static void *dsa_newdata(void *provctx)
{
    return DSA_new();
}

static void dsa_freedata(void *keydata)
{
    DSA_free(keydata);
}

static int dsa_has(void *keydata, int selection)
{
    DSA *dsa = keydata;
    int ok = 0;

    if ((selection & DSA_POSSIBLE_SELECTIONS) != 0)
        ok = 1;

    if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0)
        ok = ok && (DSA_get0_pub_key(dsa) != NULL);
    if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0)
        ok = ok && (DSA_get0_priv_key(dsa) != NULL);
    if ((selection & OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS) != 0)
        ok = ok && (DSA_get0_p(dsa) != NULL && DSA_get0_g(dsa) != NULL);
    return ok;
}

static int dsa_import(void *keydata, int selection, const OSSL_PARAM params[])
{
    DSA *dsa = keydata;
    int ok = 0;

    if (dsa == NULL)
        return 0;

    if ((selection & DSA_POSSIBLE_SELECTIONS) != 0)
        ok = 1;

    if ((selection & OSSL_KEYMGMT_SELECT_ALL_PARAMETERS) != 0)
        ok = ok && params_to_domparams(dsa, params);
    if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0)
        ok = ok && params_to_key(dsa, params);

    return ok;
}

static int dsa_export(void *keydata, int selection, OSSL_CALLBACK *param_cb,
                      void *cbarg)
{
    DSA *dsa = keydata;
    OSSL_PARAM_BLD tmpl;
    OSSL_PARAM *params = NULL;
    int ok = 1;

    if (dsa == NULL)
        return 0;

    ossl_param_bld_init(&tmpl);

    if ((selection & OSSL_KEYMGMT_SELECT_ALL_PARAMETERS) != 0)
        ok = ok && domparams_to_params(dsa, &tmpl);
    if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0)
        ok = ok && key_to_params(dsa, &tmpl);

    if (!ok
        || (params = ossl_param_bld_to_param(&tmpl)) == NULL)
        return 0;

    ok = param_cb(params, cbarg);
    ossl_param_bld_free(params);
    return ok;
}

/* IMEXPORT = IMPORT + EXPORT */

# define DSA_IMEXPORTABLE_PARAMETERS                    \
    OSSL_PARAM_BN(OSSL_PKEY_PARAM_FFC_P, NULL, 0),      \
    OSSL_PARAM_BN(OSSL_PKEY_PARAM_FFC_Q, NULL, 0),      \
    OSSL_PARAM_BN(OSSL_PKEY_PARAM_FFC_G, NULL, 0)
# define DSA_IMEXPORTABLE_PUBLIC_KEY                    \
    OSSL_PARAM_BN(OSSL_PKEY_PARAM_DSA_PUB_KEY, NULL, 0)
# define DSA_IMEXPORTABLE_PRIVATE_KEY                   \
    OSSL_PARAM_BN(OSSL_PKEY_PARAM_DSA_PRIV_KEY, NULL, 0)
static const OSSL_PARAM dsa_all_types[] = {
    DSA_IMEXPORTABLE_PARAMETERS,
    DSA_IMEXPORTABLE_PUBLIC_KEY,
    DSA_IMEXPORTABLE_PRIVATE_KEY,
    OSSL_PARAM_END
};
static const OSSL_PARAM dsa_parameter_types[] = {
    DSA_IMEXPORTABLE_PARAMETERS,
    OSSL_PARAM_END
};
static const OSSL_PARAM dsa_key_types[] = {
    DSA_IMEXPORTABLE_PUBLIC_KEY,
    DSA_IMEXPORTABLE_PRIVATE_KEY,
    OSSL_PARAM_END
};
static const OSSL_PARAM *dsa_types[] = {
    NULL,                        /* Index 0 = none of them */
    dsa_parameter_types,          /* Index 1 = parameter types */
    dsa_key_types,                /* Index 2 = key types */
    dsa_all_types                 /* Index 3 = 1 + 2 */
};

static const OSSL_PARAM *dsa_imexport_types(int selection)
{
    int type_select = 0;

    if ((selection & OSSL_KEYMGMT_SELECT_ALL_PARAMETERS) != 0)
        type_select += 1;
    if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0)
        type_select += 2;
    return dsa_types[type_select];
}

static const OSSL_PARAM *dsa_import_types(int selection)
{
    return dsa_imexport_types(selection);
}

static const OSSL_PARAM *dsa_export_types(int selection)
{
    return dsa_imexport_types(selection);
}

static ossl_inline int dsa_get_params(void *key, OSSL_PARAM params[])
{
    DSA *dsa = key;
    OSSL_PARAM *p;

    if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_BITS)) != NULL
        && !OSSL_PARAM_set_int(p, DSA_bits(dsa)))
        return 0;
    if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_SECURITY_BITS)) != NULL
        && !OSSL_PARAM_set_int(p, DSA_security_bits(dsa)))
        return 0;
    if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_MAX_SIZE)) != NULL
        && !OSSL_PARAM_set_int(p, DSA_size(dsa)))
        return 0;
    if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_DEFAULT_DIGEST)) != NULL
        && !OSSL_PARAM_set_utf8_string(p, DSA_DEFAULT_MD))
        return 0;
    return 1;
}

static const OSSL_PARAM dsa_params[] = {
    OSSL_PARAM_int(OSSL_PKEY_PARAM_BITS, NULL),
    OSSL_PARAM_int(OSSL_PKEY_PARAM_SECURITY_BITS, NULL),
    OSSL_PARAM_int(OSSL_PKEY_PARAM_MAX_SIZE, NULL),
    OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_DEFAULT_DIGEST, NULL, 0),
    OSSL_PARAM_END
};

static const OSSL_PARAM *dsa_gettable_params(void)
{
    return dsa_params;
}

const OSSL_DISPATCH dsa_keymgmt_functions[] = {
    { OSSL_FUNC_KEYMGMT_NEW, (void (*)(void))dsa_newdata },
    { OSSL_FUNC_KEYMGMT_FREE, (void (*)(void))dsa_freedata },
    { OSSL_FUNC_KEYMGMT_GET_PARAMS, (void (*) (void))dsa_get_params },
    { OSSL_FUNC_KEYMGMT_GETTABLE_PARAMS, (void (*) (void))dsa_gettable_params },
    { OSSL_FUNC_KEYMGMT_HAS, (void (*)(void))dsa_has },
    { OSSL_FUNC_KEYMGMT_IMPORT, (void (*)(void))dsa_import },
    { OSSL_FUNC_KEYMGMT_IMPORT_TYPES, (void (*)(void))dsa_import_types },
    { OSSL_FUNC_KEYMGMT_EXPORT, (void (*)(void))dsa_export },
    { OSSL_FUNC_KEYMGMT_EXPORT_TYPES, (void (*)(void))dsa_export_types },
    { 0, NULL }
};
Commit	Line	Data
4889dadc MC	1	/*
	2	* Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
	3	*
	4	* Licensed under the Apache License 2.0 (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
	8	*/
	9
	10	#include <openssl/core_numbers.h>
	11	#include <openssl/core_names.h>
	12	#include <openssl/bn.h>
4889dadc	13	#include <openssl/params.h>
1640d48c	14	#include "internal/param_build.h"
8dd5c603	15	#include "crypto/dsa.h"
af3e7e1b	16	#include "prov/implementations.h"
1640d48c	17	#include "prov/providercommon.h"
e683582b SL	18	#include "prov/provider_ctx.h"
e683582b SL	19	#include "crypto/dsa.h"
4889dadc	20
8dd5c603 RL	21	static OSSL_OP_keymgmt_new_fn dsa_newdata;
8dd5c603 RL	22	static OSSL_OP_keymgmt_free_fn dsa_freedata;
273a67e3 RL	23	static OSSL_OP_keymgmt_get_params_fn dsa_get_params;
273a67e3 RL	24	static OSSL_OP_keymgmt_gettable_params_fn dsa_gettable_params;
8dd5c603 RL	25	static OSSL_OP_keymgmt_has_fn dsa_has;
8dd5c603 RL	26	static OSSL_OP_keymgmt_import_fn dsa_import;
273a67e3	27	static OSSL_OP_keymgmt_import_types_fn dsa_import_types;
8dd5c603	28	static OSSL_OP_keymgmt_export_fn dsa_export;
273a67e3	29	static OSSL_OP_keymgmt_export_types_fn dsa_export_types;
4889dadc	30
8baa49ae	31	#define DSA_DEFAULT_MD "SHA256"
8dd5c603	32	#define DSA_POSSIBLE_SELECTIONS \
273a67e3	33	(OSSL_KEYMGMT_SELECT_KEYPAIR \| OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS)
8baa49ae	34
073f59c4	35	static int params_to_domparams(DSA *dsa, const OSSL_PARAM params[])
4889dadc	36	{
073f59c4 RL	37	const OSSL_PARAM param_p, param_q, *param_g;
073f59c4 RL	38	BIGNUM p = NULL, q = NULL, *g = NULL;
4889dadc MC	39
	40	if (dsa == NULL)
	41	return 0;
	42
	43	param_p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_P);
	44	param_q = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_Q);
	45	param_g = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_G);
073f59c4 RL	46
	47	if ((param_p != NULL && !OSSL_PARAM_get_BN(param_p, &p))
	48	\|\| (param_q != NULL && !OSSL_PARAM_get_BN(param_q, &q))
	49	\|\| (param_g != NULL && !OSSL_PARAM_get_BN(param_g, &g)))
	50	goto err;
	51
	52	if (!DSA_set0_pqg(dsa, p, q, g))
	53	goto err;
	54
	55	return 1;
	56
	57	err:
	58	BN_free(p);
	59	BN_free(q);
	60	BN_free(g);
	61	return 0;
	62	}
	63
1640d48c	64	static int domparams_to_params(DSA dsa, OSSL_PARAM_BLD tmpl)
13aa5d29	65	{
13aa5d29 RL	66	const BIGNUM dsa_p = NULL, dsa_q = NULL, *dsa_g = NULL;
	67
	68	if (dsa == NULL)
	69	return 0;
	70
	71	DSA_get0_pqg(dsa, &dsa_p, &dsa_q, &dsa_g);
1640d48c RL	72	if (dsa_p != NULL
1640d48c RL	73	&& !ossl_param_bld_push_BN(tmpl, OSSL_PKEY_PARAM_FFC_P, dsa_p))
13aa5d29	74	return 0;
1640d48c RL	75	if (dsa_q != NULL
1640d48c RL	76	&& !ossl_param_bld_push_BN(tmpl, OSSL_PKEY_PARAM_FFC_Q, dsa_q))
13aa5d29	77	return 0;
1640d48c RL	78	if (dsa_g != NULL
1640d48c RL	79	&& !ossl_param_bld_push_BN(tmpl, OSSL_PKEY_PARAM_FFC_G, dsa_g))
13aa5d29 RL	80	return 0;
	81
	82	return 1;
	83	}
	84
073f59c4 RL	85	static int params_to_key(DSA *dsa, const OSSL_PARAM params[])
	86	{
	87	const OSSL_PARAM param_priv_key, param_pub_key;
	88	BIGNUM priv_key = NULL, pub_key = NULL;
	89
	90	if (dsa == NULL)
	91	return 0;
	92
	93	if (!params_to_domparams(dsa, params))
	94	return 0;
	95
4889dadc MC	96	param_priv_key =
	97	OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_DSA_PRIV_KEY);
	98	param_pub_key =
	99	OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_DSA_PUB_KEY);
	100
	101	/*
	102	* DSA documentation says that a public key must be present if a private key
	103	* is.
	104	*/
	105	if (param_priv_key != NULL && param_pub_key == NULL)
	106	return 0;
	107
073f59c4 RL	108	if ((param_priv_key != NULL
073f59c4 RL	109	&& !OSSL_PARAM_get_BN(param_priv_key, &priv_key))
4889dadc MC	110	\|\| (param_pub_key != NULL
	111	&& !OSSL_PARAM_get_BN(param_pub_key, &pub_key)))
	112	goto err;
	113
4889dadc MC	114	if (pub_key != NULL && !DSA_set0_key(dsa, pub_key, priv_key))
4889dadc MC	115	goto err;
4889dadc MC	116
	117	return 1;
	118
	119	err:
4889dadc MC	120	BN_free(priv_key);
	121	BN_free(pub_key);
	122	return 0;
	123	}
	124
1640d48c	125	static int key_to_params(DSA dsa, OSSL_PARAM_BLD tmpl)
13aa5d29	126	{
13aa5d29 RL	127	const BIGNUM priv_key = NULL, pub_key = NULL;
	128
	129	if (dsa == NULL)
	130	return 0;
1640d48c	131	if (!domparams_to_params(dsa, tmpl))
13aa5d29 RL	132	return 0;
	133
	134	DSA_get0_key(dsa, &pub_key, &priv_key);
1640d48c RL	135	if (priv_key != NULL
1640d48c RL	136	&& !ossl_param_bld_push_BN(tmpl, OSSL_PKEY_PARAM_DSA_PRIV_KEY, priv_key))
13aa5d29	137	return 0;
1640d48c RL	138	if (pub_key != NULL
1640d48c RL	139	&& !ossl_param_bld_push_BN(tmpl, OSSL_PKEY_PARAM_DSA_PUB_KEY, pub_key))
13aa5d29 RL	140	return 0;
	141
	142	return 1;
	143	}
	144
8dd5c603	145	static void dsa_newdata(void provctx)
073f59c4	146	{
8dd5c603	147	return DSA_new();
073f59c4 RL	148	}
073f59c4 RL	149
8dd5c603	150	static void dsa_freedata(void *keydata)
13aa5d29	151	{
8dd5c603 RL	152	DSA_free(keydata);
8dd5c603 RL	153	}
1640d48c	154
8dd5c603 RL	155	static int dsa_has(void *keydata, int selection)
	156	{
	157	DSA *dsa = keydata;
	158	int ok = 0;
	159
	160	if ((selection & DSA_POSSIBLE_SELECTIONS) != 0)
	161	ok = 1;
	162
	163	if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0)
	164	ok = ok && (DSA_get0_pub_key(dsa) != NULL);
	165	if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0)
	166	ok = ok && (DSA_get0_priv_key(dsa) != NULL);
	167	if ((selection & OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS) != 0)
	168	ok = ok && (DSA_get0_p(dsa) != NULL && DSA_get0_g(dsa) != NULL);
	169	return ok;
13aa5d29 RL	170	}
13aa5d29 RL	171
8dd5c603	172	static int dsa_import(void *keydata, int selection, const OSSL_PARAM params[])
4889dadc	173	{
8dd5c603 RL	174	DSA *dsa = keydata;
	175	int ok = 0;
	176
	177	if (dsa == NULL)
	178	return 0;
	179
	180	if ((selection & DSA_POSSIBLE_SELECTIONS) != 0)
	181	ok = 1;
	182
	183	if ((selection & OSSL_KEYMGMT_SELECT_ALL_PARAMETERS) != 0)
	184	ok = ok && params_to_domparams(dsa, params);
	185	if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0)
	186	ok = ok && params_to_key(dsa, params);
	187
	188	return ok;
4889dadc MC	189	}
4889dadc MC	190
8dd5c603 RL	191	static int dsa_export(void keydata, int selection, OSSL_CALLBACK param_cb,
8dd5c603 RL	192	void *cbarg)
13aa5d29	193	{
8dd5c603	194	DSA *dsa = keydata;
1640d48c RL	195	OSSL_PARAM_BLD tmpl;
1640d48c RL	196	OSSL_PARAM *params = NULL;
8dd5c603 RL	197	int ok = 1;
	198
	199	if (dsa == NULL)
	200	return 0;
1640d48c RL	201
1640d48c RL	202	ossl_param_bld_init(&tmpl);
8dd5c603 RL	203
	204	if ((selection & OSSL_KEYMGMT_SELECT_ALL_PARAMETERS) != 0)
	205	ok = ok && domparams_to_params(dsa, &tmpl);
	206	if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0)
	207	ok = ok && key_to_params(dsa, &tmpl);
	208
	209	if (!ok
1640d48c RL	210	\|\| (params = ossl_param_bld_to_param(&tmpl)) == NULL)
1640d48c RL	211	return 0;
8dd5c603 RL	212
8dd5c603 RL	213	ok = param_cb(params, cbarg);
1640d48c	214	ossl_param_bld_free(params);
8dd5c603	215	return ok;
13aa5d29 RL	216	}
13aa5d29 RL	217
273a67e3 RL	218	/* IMEXPORT = IMPORT + EXPORT */
	219
	220	# define DSA_IMEXPORTABLE_PARAMETERS \
	221	OSSL_PARAM_BN(OSSL_PKEY_PARAM_FFC_P, NULL, 0), \
	222	OSSL_PARAM_BN(OSSL_PKEY_PARAM_FFC_Q, NULL, 0), \
	223	OSSL_PARAM_BN(OSSL_PKEY_PARAM_FFC_G, NULL, 0)
	224	# define DSA_IMEXPORTABLE_PUBLIC_KEY \
	225	OSSL_PARAM_BN(OSSL_PKEY_PARAM_DSA_PUB_KEY, NULL, 0)
	226	# define DSA_IMEXPORTABLE_PRIVATE_KEY \
	227	OSSL_PARAM_BN(OSSL_PKEY_PARAM_DSA_PRIV_KEY, NULL, 0)
	228	static const OSSL_PARAM dsa_all_types[] = {
	229	DSA_IMEXPORTABLE_PARAMETERS,
	230	DSA_IMEXPORTABLE_PUBLIC_KEY,
	231	DSA_IMEXPORTABLE_PRIVATE_KEY,
	232	OSSL_PARAM_END
	233	};
	234	static const OSSL_PARAM dsa_parameter_types[] = {
	235	DSA_IMEXPORTABLE_PARAMETERS,
	236	OSSL_PARAM_END
	237	};
	238	static const OSSL_PARAM dsa_key_types[] = {
	239	DSA_IMEXPORTABLE_PUBLIC_KEY,
	240	DSA_IMEXPORTABLE_PRIVATE_KEY,
	241	OSSL_PARAM_END
	242	};
	243	static const OSSL_PARAM *dsa_types[] = {
	244	NULL, /* Index 0 = none of them */
	245	dsa_parameter_types, /* Index 1 = parameter types */
	246	dsa_key_types, /* Index 2 = key types */
	247	dsa_all_types /* Index 3 = 1 + 2 */
	248	};
	249
	250	static const OSSL_PARAM *dsa_imexport_types(int selection)
	251	{
	252	int type_select = 0;
	253
	254	if ((selection & OSSL_KEYMGMT_SELECT_ALL_PARAMETERS) != 0)
	255	type_select += 1;
	256	if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0)
	257	type_select += 2;
	258	return dsa_types[type_select];
	259	}
	260
	261	static const OSSL_PARAM *dsa_import_types(int selection)
	262	{
	263	return dsa_imexport_types(selection);
	264	}
	265
	266	static const OSSL_PARAM *dsa_export_types(int selection)
	267	{
	268	return dsa_imexport_types(selection);
	269	}
	270
8dd5c603	271	static ossl_inline int dsa_get_params(void *key, OSSL_PARAM params[])
9e5aaf78 RL	272	{
	273	DSA *dsa = key;
	274	OSSL_PARAM *p;
	275
	276	if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_BITS)) != NULL
	277	&& !OSSL_PARAM_set_int(p, DSA_bits(dsa)))
	278	return 0;
	279	if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_SECURITY_BITS)) != NULL
	280	&& !OSSL_PARAM_set_int(p, DSA_security_bits(dsa)))
	281	return 0;
	282	if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_MAX_SIZE)) != NULL
	283	&& !OSSL_PARAM_set_int(p, DSA_size(dsa)))
	284	return 0;
8baa49ae RL	285	if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_DEFAULT_DIGEST)) != NULL
	286	&& !OSSL_PARAM_set_utf8_string(p, DSA_DEFAULT_MD))
	287	return 0;
9e5aaf78 RL	288	return 1;
	289	}
	290
273a67e3 RL	291	static const OSSL_PARAM dsa_params[] = {
	292	OSSL_PARAM_int(OSSL_PKEY_PARAM_BITS, NULL),
	293	OSSL_PARAM_int(OSSL_PKEY_PARAM_SECURITY_BITS, NULL),
	294	OSSL_PARAM_int(OSSL_PKEY_PARAM_MAX_SIZE, NULL),
	295	OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_DEFAULT_DIGEST, NULL, 0),
	296	OSSL_PARAM_END
	297	};
	298
	299	static const OSSL_PARAM *dsa_gettable_params(void)
	300	{
	301	return dsa_params;
	302	}
	303
4889dadc	304	const OSSL_DISPATCH dsa_keymgmt_functions[] = {
8dd5c603 RL	305	{ OSSL_FUNC_KEYMGMT_NEW, (void (*)(void))dsa_newdata },
8dd5c603 RL	306	{ OSSL_FUNC_KEYMGMT_FREE, (void (*)(void))dsa_freedata },
273a67e3 RL	307	{ OSSL_FUNC_KEYMGMT_GET_PARAMS, (void (*) (void))dsa_get_params },
273a67e3 RL	308	{ OSSL_FUNC_KEYMGMT_GETTABLE_PARAMS, (void (*) (void))dsa_gettable_params },
8dd5c603 RL	309	{ OSSL_FUNC_KEYMGMT_HAS, (void (*)(void))dsa_has },
8dd5c603 RL	310	{ OSSL_FUNC_KEYMGMT_IMPORT, (void (*)(void))dsa_import },
273a67e3	311	{ OSSL_FUNC_KEYMGMT_IMPORT_TYPES, (void (*)(void))dsa_import_types },
8dd5c603	312	{ OSSL_FUNC_KEYMGMT_EXPORT, (void (*)(void))dsa_export },
273a67e3	313	{ OSSL_FUNC_KEYMGMT_EXPORT_TYPES, (void (*)(void))dsa_export_types },
4889dadc MC	314	{ 0, NULL }
4889dadc MC	315	};