/*
- * Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2019-2023 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
* https://www.openssl.org/source/license.html
*/
-#include <openssl/core_numbers.h>
+/*
+ * DSA low level APIs are deprecated for public use, but still ok for
+ * internal use.
+ */
+#include "internal/deprecated.h"
+
+#include <openssl/core_dispatch.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 <openssl/err.h>
#include "prov/providercommon.h"
+#include "prov/implementations.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;
+#include "internal/sizes.h"
+#include "internal/nelem.h"
+#include "internal/param_build_set.h"
+
+static OSSL_FUNC_keymgmt_new_fn dsa_newdata;
+static OSSL_FUNC_keymgmt_free_fn dsa_freedata;
+static OSSL_FUNC_keymgmt_gen_init_fn dsa_gen_init;
+static OSSL_FUNC_keymgmt_gen_set_template_fn dsa_gen_set_template;
+static OSSL_FUNC_keymgmt_gen_set_params_fn dsa_gen_set_params;
+static OSSL_FUNC_keymgmt_gen_settable_params_fn dsa_gen_settable_params;
+static OSSL_FUNC_keymgmt_gen_fn dsa_gen;
+static OSSL_FUNC_keymgmt_gen_cleanup_fn dsa_gen_cleanup;
+static OSSL_FUNC_keymgmt_load_fn dsa_load;
+static OSSL_FUNC_keymgmt_get_params_fn dsa_get_params;
+static OSSL_FUNC_keymgmt_gettable_params_fn dsa_gettable_params;
+static OSSL_FUNC_keymgmt_has_fn dsa_has;
+static OSSL_FUNC_keymgmt_match_fn dsa_match;
+static OSSL_FUNC_keymgmt_validate_fn dsa_validate;
+static OSSL_FUNC_keymgmt_import_fn dsa_import;
+static OSSL_FUNC_keymgmt_import_types_fn dsa_import_types;
+static OSSL_FUNC_keymgmt_export_fn dsa_export;
+static OSSL_FUNC_keymgmt_export_types_fn dsa_export_types;
+static OSSL_FUNC_keymgmt_dup_fn dsa_dup;
#define DSA_DEFAULT_MD "SHA256"
-#define DSA_POSSIBLE_SELECTIONS \
+#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;
-}
+struct dsa_gen_ctx {
+ OSSL_LIB_CTX *libctx;
+
+ FFC_PARAMS *ffc_params;
+ int selection;
+ /* All these parameters are used for parameter generation only */
+ size_t pbits;
+ size_t qbits;
+ unsigned char *seed; /* optional FIPS186-4 param for testing */
+ size_t seedlen;
+ int gindex; /* optional FIPS186-4 generator index (ignored if -1) */
+ int gen_type; /* DSA_PARAMGEN_TYPE_FIPS_186_2 or DSA_PARAMGEN_TYPE_FIPS_186_4 */
+ int pcounter;
+ int hindex;
+ char *mdname;
+ char *mdprops;
+ OSSL_CALLBACK *cb;
+ void *cbarg;
+};
+typedef struct dh_name2id_st{
+ const char *name;
+ int id;
+} DSA_GENTYPE_NAME2ID;
-static int domparams_to_params(DSA *dsa, OSSL_PARAM_BLD *tmpl)
+static const DSA_GENTYPE_NAME2ID dsatype2id[]=
{
- 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;
-}
+#ifdef FIPS_MODULE
+ { "default", DSA_PARAMGEN_TYPE_FIPS_186_4 },
+#else
+ { "default", DSA_PARAMGEN_TYPE_FIPS_DEFAULT },
+#endif
+ { "fips186_4", DSA_PARAMGEN_TYPE_FIPS_186_4 },
+ { "fips186_2", DSA_PARAMGEN_TYPE_FIPS_186_2 },
+};
-static int params_to_key(DSA *dsa, const OSSL_PARAM params[])
+static int dsa_gen_type_name2id(const char *name)
{
- 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;
+ size_t i;
- err:
- BN_free(priv_key);
- BN_free(pub_key);
- return 0;
+ for (i = 0; i < OSSL_NELEM(dsatype2id); ++i) {
+ if (OPENSSL_strcasecmp(dsatype2id[i].name, name) == 0)
+ return dsatype2id[i].id;
+ }
+ return -1;
}
-static int key_to_params(DSA *dsa, OSSL_PARAM_BLD *tmpl)
+static int dsa_key_todata(DSA *dsa, OSSL_PARAM_BLD *bld, OSSL_PARAM params[],
+ int include_private)
{
- const BIGNUM *priv_key = NULL, *pub_key = NULL;
+ const BIGNUM *priv = NULL, *pub = 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))
+ DSA_get0_key(dsa, &pub, &priv);
+ if (include_private
+ && priv != NULL
+ && !ossl_param_build_set_bn(bld, params, OSSL_PKEY_PARAM_PRIV_KEY, priv))
return 0;
- if (pub_key != NULL
- && !ossl_param_bld_push_BN(tmpl, OSSL_PKEY_PARAM_DSA_PUB_KEY, pub_key))
+ if (pub != NULL
+ && !ossl_param_build_set_bn(bld, params, OSSL_PKEY_PARAM_PUB_KEY, pub))
return 0;
return 1;
static void *dsa_newdata(void *provctx)
{
- return DSA_new();
+ if (!ossl_prov_is_running())
+ return NULL;
+ return ossl_dsa_new(PROV_LIBCTX_OF(provctx));
}
static void dsa_freedata(void *keydata)
DSA_free(keydata);
}
-static int dsa_has(void *keydata, int selection)
+static int dsa_has(const void *keydata, int selection)
{
- DSA *dsa = keydata;
- int ok = 0;
+ const DSA *dsa = keydata;
+ int ok = 1;
- if ((selection & DSA_POSSIBLE_SELECTIONS) != 0)
- ok = 1;
+ if (!ossl_prov_is_running() || dsa == NULL)
+ return 0;
+ if ((selection & DSA_POSSIBLE_SELECTIONS) == 0)
+ return 1; /* the selection is not missing */
if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0)
ok = ok && (DSA_get0_pub_key(dsa) != NULL);
return ok;
}
+static int dsa_match(const void *keydata1, const void *keydata2, int selection)
+{
+ const DSA *dsa1 = keydata1;
+ const DSA *dsa2 = keydata2;
+ int ok = 1;
+
+ if (!ossl_prov_is_running())
+ return 0;
+
+ if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0) {
+ int key_checked = 0;
+
+ if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0) {
+ const BIGNUM *pa = DSA_get0_pub_key(dsa1);
+ const BIGNUM *pb = DSA_get0_pub_key(dsa2);
+
+ if (pa != NULL && pb != NULL) {
+ ok = ok && BN_cmp(pa, pb) == 0;
+ key_checked = 1;
+ }
+ }
+ if (!key_checked
+ && (selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0) {
+ const BIGNUM *pa = DSA_get0_priv_key(dsa1);
+ const BIGNUM *pb = DSA_get0_priv_key(dsa2);
+
+ if (pa != NULL && pb != NULL) {
+ ok = ok && BN_cmp(pa, pb) == 0;
+ key_checked = 1;
+ }
+ }
+ ok = ok && key_checked;
+ }
+ if ((selection & OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS) != 0) {
+ FFC_PARAMS *dsaparams1 = ossl_dsa_get0_params((DSA *)dsa1);
+ FFC_PARAMS *dsaparams2 = ossl_dsa_get0_params((DSA *)dsa2);
+
+ ok = ok && ossl_ffc_params_cmp(dsaparams1, dsaparams2, 1);
+ }
+ return ok;
+}
+
static int dsa_import(void *keydata, int selection, const OSSL_PARAM params[])
{
DSA *dsa = keydata;
- int ok = 0;
+ int ok = 1;
- if (dsa == NULL)
+ if (!ossl_prov_is_running() || dsa == NULL)
return 0;
- if ((selection & DSA_POSSIBLE_SELECTIONS) != 0)
- ok = 1;
+ if ((selection & DSA_POSSIBLE_SELECTIONS) == 0)
+ return 0;
- 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);
+ /* a key without parameters is meaningless */
+ ok = ok && ossl_dsa_ffc_params_fromdata(dsa, params);
+
+ if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0) {
+ int include_private =
+ selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY ? 1 : 0;
+
+ ok = ok && ossl_dsa_key_fromdata(dsa, params, include_private);
+ }
return ok;
}
void *cbarg)
{
DSA *dsa = keydata;
- OSSL_PARAM_BLD tmpl;
+ OSSL_PARAM_BLD *tmpl;
OSSL_PARAM *params = NULL;
int ok = 1;
- if (dsa == NULL)
+ if (!ossl_prov_is_running() || dsa == NULL)
+ return 0;
+
+ if ((selection & DSA_POSSIBLE_SELECTIONS) == 0)
return 0;
- ossl_param_bld_init(&tmpl);
+ tmpl = OSSL_PARAM_BLD_new();
+ if (tmpl == NULL)
+ return 0;
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);
+ ok = ok && ossl_ffc_params_todata(ossl_dsa_get0_params(dsa), tmpl, NULL);
+ if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0) {
+ int include_private =
+ selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY ? 1 : 0;
- if (!ok
- || (params = ossl_param_bld_to_param(&tmpl)) == NULL)
- return 0;
+ ok = ok && dsa_key_todata(dsa, tmpl, NULL, include_private);
+ }
+
+ if (!ok || (params = OSSL_PARAM_BLD_to_param(tmpl)) == NULL) {
+ ok = 0;
+ goto err;
+ }
ok = param_cb(params, cbarg);
- ossl_param_bld_free(params);
+ OSSL_PARAM_free(params);
+err:
+ OSSL_PARAM_BLD_free(tmpl);
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_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), \
+ OSSL_PARAM_BN(OSSL_PKEY_PARAM_FFC_COFACTOR, NULL, 0), \
+ OSSL_PARAM_int(OSSL_PKEY_PARAM_FFC_GINDEX, NULL), \
+ OSSL_PARAM_int(OSSL_PKEY_PARAM_FFC_PCOUNTER, NULL), \
+ OSSL_PARAM_int(OSSL_PKEY_PARAM_FFC_H, NULL), \
+ OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_FFC_SEED, NULL, 0)
# define DSA_IMEXPORTABLE_PUBLIC_KEY \
- OSSL_PARAM_BN(OSSL_PKEY_PARAM_DSA_PUB_KEY, NULL, 0)
+ OSSL_PARAM_BN(OSSL_PKEY_PARAM_PUB_KEY, NULL, 0)
# define DSA_IMEXPORTABLE_PRIVATE_KEY \
- OSSL_PARAM_BN(OSSL_PKEY_PARAM_DSA_PRIV_KEY, NULL, 0)
+ OSSL_PARAM_BN(OSSL_PKEY_PARAM_PRIV_KEY, NULL, 0)
static const OSSL_PARAM dsa_all_types[] = {
DSA_IMEXPORTABLE_PARAMETERS,
DSA_IMEXPORTABLE_PUBLIC_KEY,
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;
+ return ossl_ffc_params_todata(ossl_dsa_get0_params(dsa), NULL, params)
+ && dsa_key_todata(dsa, NULL, params, 1);
}
static const OSSL_PARAM dsa_params[] = {
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),
+ DSA_IMEXPORTABLE_PARAMETERS,
+ DSA_IMEXPORTABLE_PUBLIC_KEY,
+ DSA_IMEXPORTABLE_PRIVATE_KEY,
OSSL_PARAM_END
};
-static const OSSL_PARAM *dsa_gettable_params(void)
+static const OSSL_PARAM *dsa_gettable_params(void *provctx)
{
return dsa_params;
}
-const OSSL_DISPATCH dsa_keymgmt_functions[] = {
+static int dsa_validate_domparams(const DSA *dsa, int checktype)
+{
+ int status = 0;
+
+ return ossl_dsa_check_params(dsa, checktype, &status);
+}
+
+static int dsa_validate_public(const DSA *dsa)
+{
+ int status = 0;
+ const BIGNUM *pub_key = NULL;
+
+ DSA_get0_key(dsa, &pub_key, NULL);
+ if (pub_key == NULL)
+ return 0;
+ return ossl_dsa_check_pub_key(dsa, pub_key, &status);
+}
+
+static int dsa_validate_private(const DSA *dsa)
+{
+ int status = 0;
+ const BIGNUM *priv_key = NULL;
+
+ DSA_get0_key(dsa, NULL, &priv_key);
+ if (priv_key == NULL)
+ return 0;
+ return ossl_dsa_check_priv_key(dsa, priv_key, &status);
+}
+
+static int dsa_validate(const void *keydata, int selection, int checktype)
+{
+ const DSA *dsa = keydata;
+ int ok = 1;
+
+ if (!ossl_prov_is_running())
+ return 0;
+
+ if ((selection & DSA_POSSIBLE_SELECTIONS) == 0)
+ return 1; /* nothing to validate */
+
+ if ((selection & OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS) != 0)
+ ok = ok && dsa_validate_domparams(dsa, checktype);
+
+ if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0)
+ ok = ok && dsa_validate_public(dsa);
+
+ if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0)
+ ok = ok && dsa_validate_private(dsa);
+
+ /* If the whole key is selected, we do a pairwise validation */
+ if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR)
+ == OSSL_KEYMGMT_SELECT_KEYPAIR)
+ ok = ok && ossl_dsa_check_pairwise(dsa);
+ return ok;
+}
+
+static void *dsa_gen_init(void *provctx, int selection,
+ const OSSL_PARAM params[])
+{
+ OSSL_LIB_CTX *libctx = PROV_LIBCTX_OF(provctx);
+ struct dsa_gen_ctx *gctx = NULL;
+
+ if (!ossl_prov_is_running() || (selection & DSA_POSSIBLE_SELECTIONS) == 0)
+ return NULL;
+
+ if ((gctx = OPENSSL_zalloc(sizeof(*gctx))) != NULL) {
+ gctx->selection = selection;
+ gctx->libctx = libctx;
+ gctx->pbits = 2048;
+ gctx->qbits = 224;
+#ifdef FIPS_MODULE
+ gctx->gen_type = DSA_PARAMGEN_TYPE_FIPS_186_4;
+#else
+ gctx->gen_type = DSA_PARAMGEN_TYPE_FIPS_DEFAULT;
+#endif
+ gctx->gindex = -1;
+ gctx->pcounter = -1;
+ gctx->hindex = 0;
+ }
+ if (!dsa_gen_set_params(gctx, params)) {
+ OPENSSL_free(gctx);
+ gctx = NULL;
+ }
+ return gctx;
+}
+
+static int dsa_gen_set_template(void *genctx, void *templ)
+{
+ struct dsa_gen_ctx *gctx = genctx;
+ DSA *dsa = templ;
+
+ if (!ossl_prov_is_running() || gctx == NULL || dsa == NULL)
+ return 0;
+ gctx->ffc_params = ossl_dsa_get0_params(dsa);
+ return 1;
+}
+
+static int dsa_set_gen_seed(struct dsa_gen_ctx *gctx, unsigned char *seed,
+ size_t seedlen)
+{
+ OPENSSL_clear_free(gctx->seed, gctx->seedlen);
+ gctx->seed = NULL;
+ gctx->seedlen = 0;
+ if (seed != NULL && seedlen > 0) {
+ gctx->seed = OPENSSL_memdup(seed, seedlen);
+ if (gctx->seed == NULL)
+ return 0;
+ gctx->seedlen = seedlen;
+ }
+ return 1;
+}
+
+static int dsa_gen_set_params(void *genctx, const OSSL_PARAM params[])
+{
+ struct dsa_gen_ctx *gctx = genctx;
+ const OSSL_PARAM *p;
+ int gen_type = -1;
+
+ if (gctx == NULL)
+ return 0;
+ if (params == NULL)
+ return 1;
+
+
+ p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_TYPE);
+ if (p != NULL) {
+ if (p->data_type != OSSL_PARAM_UTF8_STRING
+ || ((gen_type = dsa_gen_type_name2id(p->data)) == -1)) {
+ ERR_raise(ERR_LIB_PROV, ERR_R_PASSED_INVALID_ARGUMENT);
+ return 0;
+ }
+
+ /*
+ * Only assign context gen_type if it was set by dsa_gen_type_name2id
+ * must be in range:
+ * DSA_PARAMGEN_TYPE_FIPS_186_4 <= gen_type <= DSA_PARAMGEN_TYPE_FIPS_DEFAULT
+ */
+ if (gen_type != -1)
+ gctx->gen_type = gen_type;
+ }
+ p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_GINDEX);
+ if (p != NULL
+ && !OSSL_PARAM_get_int(p, &gctx->gindex))
+ return 0;
+ p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_PCOUNTER);
+ if (p != NULL
+ && !OSSL_PARAM_get_int(p, &gctx->pcounter))
+ return 0;
+ p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_H);
+ if (p != NULL
+ && !OSSL_PARAM_get_int(p, &gctx->hindex))
+ return 0;
+ p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_SEED);
+ if (p != NULL
+ && (p->data_type != OSSL_PARAM_OCTET_STRING
+ || !dsa_set_gen_seed(gctx, p->data, p->data_size)))
+ return 0;
+ if ((p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_PBITS)) != NULL
+ && !OSSL_PARAM_get_size_t(p, &gctx->pbits))
+ return 0;
+ if ((p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_QBITS)) != NULL
+ && !OSSL_PARAM_get_size_t(p, &gctx->qbits))
+ return 0;
+ p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_DIGEST);
+ if (p != NULL) {
+ if (p->data_type != OSSL_PARAM_UTF8_STRING)
+ return 0;
+ OPENSSL_free(gctx->mdname);
+ gctx->mdname = OPENSSL_strdup(p->data);
+ if (gctx->mdname == NULL)
+ return 0;
+ }
+ p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_DIGEST_PROPS);
+ if (p != NULL) {
+ if (p->data_type != OSSL_PARAM_UTF8_STRING)
+ return 0;
+ OPENSSL_free(gctx->mdprops);
+ gctx->mdprops = OPENSSL_strdup(p->data);
+ if (gctx->mdprops == NULL)
+ return 0;
+ }
+ return 1;
+}
+
+static const OSSL_PARAM *dsa_gen_settable_params(ossl_unused void *genctx,
+ ossl_unused void *provctx)
+{
+ static OSSL_PARAM settable[] = {
+ OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_FFC_TYPE, NULL, 0),
+ OSSL_PARAM_size_t(OSSL_PKEY_PARAM_FFC_PBITS, NULL),
+ OSSL_PARAM_size_t(OSSL_PKEY_PARAM_FFC_QBITS, NULL),
+ OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_FFC_DIGEST, NULL, 0),
+ OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_FFC_DIGEST_PROPS, NULL, 0),
+ OSSL_PARAM_int(OSSL_PKEY_PARAM_FFC_GINDEX, NULL),
+ OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_FFC_SEED, NULL, 0),
+ OSSL_PARAM_int(OSSL_PKEY_PARAM_FFC_PCOUNTER, NULL),
+ OSSL_PARAM_int(OSSL_PKEY_PARAM_FFC_H, NULL),
+ OSSL_PARAM_END
+ };
+ return settable;
+}
+
+static int dsa_gencb(int p, int n, BN_GENCB *cb)
+{
+ struct dsa_gen_ctx *gctx = BN_GENCB_get_arg(cb);
+ OSSL_PARAM params[] = { OSSL_PARAM_END, OSSL_PARAM_END, OSSL_PARAM_END };
+
+ params[0] = OSSL_PARAM_construct_int(OSSL_GEN_PARAM_POTENTIAL, &p);
+ params[1] = OSSL_PARAM_construct_int(OSSL_GEN_PARAM_ITERATION, &n);
+
+ return gctx->cb(params, gctx->cbarg);
+}
+
+static void *dsa_gen(void *genctx, OSSL_CALLBACK *osslcb, void *cbarg)
+{
+ struct dsa_gen_ctx *gctx = genctx;
+ DSA *dsa = NULL;
+ BN_GENCB *gencb = NULL;
+ int ret = 0;
+ FFC_PARAMS *ffc;
+
+ if (!ossl_prov_is_running() || gctx == NULL)
+ return NULL;
+ dsa = ossl_dsa_new(gctx->libctx);
+ if (dsa == NULL)
+ return NULL;
+
+ if (gctx->gen_type == DSA_PARAMGEN_TYPE_FIPS_DEFAULT)
+ gctx->gen_type = (gctx->pbits >= 2048 ? DSA_PARAMGEN_TYPE_FIPS_186_4 :
+ DSA_PARAMGEN_TYPE_FIPS_186_2);
+
+ /*
+ * Do a bounds check on context gen_type. Must be in range:
+ * DSA_PARAMGEN_TYPE_FIPS_186_4 <= gen_type <= DSA_PARAMGEN_TYPE_FIPS_DEFAULT
+ * Noted here as this needs to be adjusted if a new type is
+ * added.
+ */
+ if (!ossl_assert((gctx->gen_type >= DSA_PARAMGEN_TYPE_FIPS_186_4)
+ && (gctx->gen_type <= DSA_PARAMGEN_TYPE_FIPS_DEFAULT))) {
+ ERR_raise_data(ERR_LIB_PROV, ERR_R_INTERNAL_ERROR,
+ "gen_type set to unsupported value %d", gctx->gen_type);
+ return NULL;
+ }
+
+ gctx->cb = osslcb;
+ gctx->cbarg = cbarg;
+ gencb = BN_GENCB_new();
+ if (gencb != NULL)
+ BN_GENCB_set(gencb, dsa_gencb, genctx);
+
+ ffc = ossl_dsa_get0_params(dsa);
+ /* Copy the template value if one was passed */
+ if (gctx->ffc_params != NULL
+ && !ossl_ffc_params_copy(ffc, gctx->ffc_params))
+ goto end;
+
+ if (gctx->seed != NULL
+ && !ossl_ffc_params_set_seed(ffc, gctx->seed, gctx->seedlen))
+ goto end;
+ if (gctx->gindex != -1) {
+ ossl_ffc_params_set_gindex(ffc, gctx->gindex);
+ if (gctx->pcounter != -1)
+ ossl_ffc_params_set_pcounter(ffc, gctx->pcounter);
+ } else if (gctx->hindex != 0) {
+ ossl_ffc_params_set_h(ffc, gctx->hindex);
+ }
+ if (gctx->mdname != NULL)
+ ossl_ffc_set_digest(ffc, gctx->mdname, gctx->mdprops);
+
+ if ((gctx->selection & OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS) != 0) {
+
+ if (ossl_dsa_generate_ffc_parameters(dsa, gctx->gen_type,
+ gctx->pbits, gctx->qbits,
+ gencb) <= 0)
+ goto end;
+ }
+ ossl_ffc_params_enable_flags(ffc, FFC_PARAM_FLAG_VALIDATE_LEGACY,
+ gctx->gen_type == DSA_PARAMGEN_TYPE_FIPS_186_2);
+ if ((gctx->selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0) {
+ if (ffc->p == NULL
+ || ffc->q == NULL
+ || ffc->g == NULL)
+ goto end;
+ if (DSA_generate_key(dsa) <= 0)
+ goto end;
+ }
+ ret = 1;
+end:
+ if (ret <= 0) {
+ DSA_free(dsa);
+ dsa = NULL;
+ }
+ BN_GENCB_free(gencb);
+ return dsa;
+}
+
+static void dsa_gen_cleanup(void *genctx)
+{
+ struct dsa_gen_ctx *gctx = genctx;
+
+ if (gctx == NULL)
+ return;
+
+ OPENSSL_free(gctx->mdname);
+ OPENSSL_free(gctx->mdprops);
+ OPENSSL_clear_free(gctx->seed, gctx->seedlen);
+ OPENSSL_free(gctx);
+}
+
+static void *dsa_load(const void *reference, size_t reference_sz)
+{
+ DSA *dsa = NULL;
+
+ if (ossl_prov_is_running() && reference_sz == sizeof(dsa)) {
+ /* The contents of the reference is the address to our object */
+ dsa = *(DSA **)reference;
+ /* We grabbed, so we detach it */
+ *(DSA **)reference = NULL;
+ return dsa;
+ }
+ return NULL;
+}
+
+static void *dsa_dup(const void *keydata_from, int selection)
+{
+ if (ossl_prov_is_running())
+ return ossl_dsa_dup(keydata_from, selection);
+ return NULL;
+}
+
+const OSSL_DISPATCH ossl_dsa_keymgmt_functions[] = {
{ OSSL_FUNC_KEYMGMT_NEW, (void (*)(void))dsa_newdata },
+ { OSSL_FUNC_KEYMGMT_GEN_INIT, (void (*)(void))dsa_gen_init },
+ { OSSL_FUNC_KEYMGMT_GEN_SET_TEMPLATE, (void (*)(void))dsa_gen_set_template },
+ { OSSL_FUNC_KEYMGMT_GEN_SET_PARAMS, (void (*)(void))dsa_gen_set_params },
+ { OSSL_FUNC_KEYMGMT_GEN_SETTABLE_PARAMS,
+ (void (*)(void))dsa_gen_settable_params },
+ { OSSL_FUNC_KEYMGMT_GEN, (void (*)(void))dsa_gen },
+ { OSSL_FUNC_KEYMGMT_GEN_CLEANUP, (void (*)(void))dsa_gen_cleanup },
+ { OSSL_FUNC_KEYMGMT_LOAD, (void (*)(void))dsa_load },
{ 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_MATCH, (void (*)(void))dsa_match },
+ { OSSL_FUNC_KEYMGMT_VALIDATE, (void (*)(void))dsa_validate },
{ 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 }
+ { OSSL_FUNC_KEYMGMT_DUP, (void (*)(void))dsa_dup },
+ OSSL_DISPATCH_END
};
projects / openssl.git / blobdiff