/*
- * Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2019-2020 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
*/
+/*
+ * DH low level APIs are deprecated for public use, but still ok for
+ * internal use.
+ */
+#include "internal/deprecated.h"
+
+#include <string.h> /* strcmp */
#include <openssl/core_numbers.h>
#include <openssl/core_names.h>
#include <openssl/bn.h>
-#include <openssl/dh.h>
-#include <openssl/params.h>
-#include "internal/param_build.h"
-#include "crypto/dh.h"
+#include <openssl/err.h>
#include "prov/implementations.h"
#include "prov/providercommon.h"
+#include "prov/provider_ctx.h"
+#include "crypto/dh.h"
+#include "internal/sizes.h"
+#include "internal/nelem.h"
+#include "internal/param_build_set.h"
static OSSL_OP_keymgmt_new_fn dh_newdata;
static OSSL_OP_keymgmt_free_fn dh_freedata;
+static OSSL_OP_keymgmt_gen_init_fn dh_gen_init;
+static OSSL_OP_keymgmt_gen_set_template_fn dh_gen_set_template;
+static OSSL_OP_keymgmt_gen_set_params_fn dh_gen_set_params;
+static OSSL_OP_keymgmt_gen_settable_params_fn dh_gen_settable_params;
+static OSSL_OP_keymgmt_gen_fn dh_gen;
+static OSSL_OP_keymgmt_gen_cleanup_fn dh_gen_cleanup;
+static OSSL_OP_keymgmt_get_params_fn dh_get_params;
+static OSSL_OP_keymgmt_gettable_params_fn dh_gettable_params;
+static OSSL_OP_keymgmt_set_params_fn dh_set_params;
+static OSSL_OP_keymgmt_settable_params_fn dh_settable_params;
static OSSL_OP_keymgmt_has_fn dh_has;
+static OSSL_OP_keymgmt_match_fn dh_match;
+static OSSL_OP_keymgmt_validate_fn dh_validate;
static OSSL_OP_keymgmt_import_fn dh_import;
+static OSSL_OP_keymgmt_import_types_fn dh_import_types;
static OSSL_OP_keymgmt_export_fn dh_export;
-static OSSL_OP_keymgmt_get_params_fn dh_get_params;
+static OSSL_OP_keymgmt_export_types_fn dh_export_types;
+
+#define DH_POSSIBLE_SELECTIONS \
+ (OSSL_KEYMGMT_SELECT_KEYPAIR | OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS)
+
+struct dh_gen_ctx {
+ OPENSSL_CTX *libctx;
+
+ FFC_PARAMS *ffc_params;
+ int selection;
+ /* All these parameters are used for parameter generation only */
+ /* If there is a group name then the remaining parameters are not needed */
+ int group_nid;
+ 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; /* see dhtype2id */
+ int generator; /* Used by DH_PARAMGEN_TYPE_GENERATOR in non fips mode only */
+ int pcounter;
+ int hindex;
+ int priv_len;
+
+ const char *mdname;
+ const char *mdprops;
+ OSSL_CALLBACK *cb;
+ void *cbarg;
+};
-#define DH_POSSIBLE_SELECTIONS \
- (OSSL_KEYMGMT_SELECT_KEY | OSSL_KEYMGMT_FLAG_DOMAIN_PARAMETERS)
+typedef struct dh_name2id_st{
+ const char *name;
+ int id;
+} DH_GENTYPE_NAME2ID;
-static int params_to_domparams(DH *dh, const OSSL_PARAM params[])
+static const DH_GENTYPE_NAME2ID dhtype2id[]=
{
- const OSSL_PARAM *param_p, *param_g;
- BIGNUM *p = NULL, *g = NULL;
-
- if (dh == NULL)
- return 0;
-
- param_p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_P);
- param_g = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_G);
-
- if ((param_p != NULL && !OSSL_PARAM_get_BN(param_p, &p))
- || (param_g != NULL && !OSSL_PARAM_get_BN(param_g, &g)))
- goto err;
-
- if (!DH_set0_pqg(dh, p, NULL, g))
- goto err;
-
- return 1;
-
- err:
- BN_free(p);
- BN_free(g);
- return 0;
-}
+ { "default", DH_PARAMGEN_TYPE_FIPS_186_4 },
+ { "fips186_4", DH_PARAMGEN_TYPE_FIPS_186_4 },
+ { "fips186_2", DH_PARAMGEN_TYPE_FIPS_186_2 },
+ { "group", DH_PARAMGEN_TYPE_GROUP },
+ { "generator", DH_PARAMGEN_TYPE_GENERATOR }
+};
-static int domparams_to_params(DH *dh, OSSL_PARAM_BLD *tmpl)
+const char *dh_gen_type_id2name(int id)
{
- const BIGNUM *dh_p = NULL, *dh_g = NULL;
+ size_t i;
- if (dh == NULL)
- return 0;
-
- DH_get0_pqg(dh, &dh_p, NULL, &dh_g);
- if (dh_p != NULL
- && !ossl_param_bld_push_BN(tmpl, OSSL_PKEY_PARAM_FFC_P, dh_p))
- return 0;
- if (dh_g != NULL
- && !ossl_param_bld_push_BN(tmpl, OSSL_PKEY_PARAM_FFC_G, dh_g))
- return 0;
-
- return 1;
+ for (i = 0; i < OSSL_NELEM(dhtype2id); ++i) {
+ if (dhtype2id[i].id == id)
+ return dhtype2id[i].name;
+ }
+ return NULL;
}
-static int params_to_key(DH *dh, const OSSL_PARAM params[])
+static int dh_gen_type_name2id(const char *name)
{
- const OSSL_PARAM *param_priv_key, *param_pub_key;
- BIGNUM *priv_key = NULL, *pub_key = NULL;
-
- if (dh == NULL)
- return 0;
-
- if (!params_to_domparams(dh, params))
- return 0;
-
- param_priv_key =
- OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_DH_PRIV_KEY);
- param_pub_key =
- OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_DH_PUB_KEY);
-
- /*
- * DH documentation says that a public key must be present if a
- * private key is present.
- * We want to have at least a public key either way, so we end up
- * requiring it unconditionally.
- */
- if (param_pub_key == NULL)
- return 0;
-
- if ((param_priv_key != NULL
- && !OSSL_PARAM_get_BN(param_priv_key, &priv_key))
- || !OSSL_PARAM_get_BN(param_pub_key, &pub_key))
- goto err;
-
- if (!DH_set0_key(dh, 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(dhtype2id); ++i) {
+ if (strcmp(dhtype2id[i].name, name) == 0)
+ return dhtype2id[i].id;
+ }
+ return -1;
}
-static int key_to_params(DH *dh, OSSL_PARAM_BLD *tmpl)
+static int dh_key_todata(DH *dh, OSSL_PARAM_BLD *bld, OSSL_PARAM params[])
{
- const BIGNUM *priv_key = NULL, *pub_key = NULL;
+ const BIGNUM *priv = NULL, *pub = NULL;
if (dh == NULL)
return 0;
- if (!domparams_to_params(dh, tmpl))
- return 0;
- DH_get0_key(dh, &pub_key, &priv_key);
- if (priv_key != NULL
- && !ossl_param_bld_push_BN(tmpl, OSSL_PKEY_PARAM_DH_PRIV_KEY, priv_key))
+ DH_get0_key(dh, &pub, &priv);
+ if (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_DH_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 *dh_newdata(void *provctx)
{
- return DH_new();
+ return dh_new_with_libctx(PROV_LIBRARY_CONTEXT_OF(provctx));
}
static void dh_freedata(void *keydata)
DH *dh = keydata;
int ok = 0;
- if ((selection & DH_POSSIBLE_SELECTIONS) != 0)
- ok = 1;
+ if (dh != NULL) {
+ if ((selection & DH_POSSIBLE_SELECTIONS) != 0)
+ ok = 1;
+
+ if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0)
+ ok = ok && (DH_get0_pub_key(dh) != NULL);
+ if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0)
+ ok = ok && (DH_get0_priv_key(dh) != NULL);
+ if ((selection & OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS) != 0)
+ ok = ok && (DH_get0_p(dh) != NULL && DH_get0_g(dh) != NULL);
+ }
+ return ok;
+}
+
+static int dh_match(const void *keydata1, const void *keydata2, int selection)
+{
+ const DH *dh1 = keydata1;
+ const DH *dh2 = keydata2;
+ int ok = 1;
if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0)
- ok = ok && (DH_get0_pub_key(dh) != NULL);
+ ok = ok && BN_cmp(DH_get0_pub_key(dh1), DH_get0_pub_key(dh2)) == 0;
if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0)
- ok = ok && (DH_get0_priv_key(dh) != NULL);
- if ((selection & OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS) != 0)
- ok = ok && (DH_get0_p(dh) != NULL && DH_get0_g(dh) != NULL);
+ ok = ok && BN_cmp(DH_get0_priv_key(dh1), DH_get0_priv_key(dh2)) == 0;
+ if ((selection & OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS) != 0) {
+ FFC_PARAMS *dhparams1 = dh_get0_params((DH *)dh1);
+ FFC_PARAMS *dhparams2 = dh_get0_params((DH *)dh2);
+
+ ok = ok && ffc_params_cmp(dhparams1, dhparams2, 1);
+ }
return ok;
}
static int dh_import(void *keydata, int selection, const OSSL_PARAM params[])
{
DH *dh = keydata;
- int ok = 0;
+ int ok = 1;
if (dh == NULL)
return 0;
- if ((selection & DH_POSSIBLE_SELECTIONS) != 0)
- ok = 1;
+ if ((selection & DH_POSSIBLE_SELECTIONS) == 0)
+ return 0;
if ((selection & OSSL_KEYMGMT_SELECT_ALL_PARAMETERS) != 0)
- ok = ok && params_to_domparams(dh, params);
+ ok = ok && dh_ffc_params_fromdata(dh, params);
+
if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0)
- ok = ok && params_to_key(dh, params);
+ ok = ok && dh_key_fromdata(dh, params);
return ok;
}
void *cbarg)
{
DH *dh = keydata;
- OSSL_PARAM_BLD tmpl;
+ OSSL_PARAM_BLD *tmpl = NULL;
OSSL_PARAM *params = NULL;
int ok = 1;
if (dh == NULL)
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(dh, &tmpl);
+ ok = ok && ffc_params_todata(dh_get0_params(dh), tmpl, NULL);
if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0)
- ok = ok && key_to_params(dh, &tmpl);
+ ok = ok && dh_key_todata(dh, tmpl, NULL);
if (!ok
- || (params = ossl_param_bld_to_param(&tmpl)) == NULL)
- return 0;
-
+ || (params = OSSL_PARAM_BLD_to_param(tmpl)) == NULL) {
+ ok = 0;
+ goto err;
+ }
ok = param_cb(params, cbarg);
- ossl_param_bld_free(params);
+ OSSL_PARAM_BLD_free_params(params);
+err:
+ OSSL_PARAM_BLD_free(tmpl);
return ok;
}
+/* IMEXPORT = IMPORT + EXPORT */
+
+# define DH_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), \
+ OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_GROUP_NAME, NULL, 0)
+# define DH_IMEXPORTABLE_PUBLIC_KEY \
+ OSSL_PARAM_BN(OSSL_PKEY_PARAM_PUB_KEY, NULL, 0)
+# define DH_IMEXPORTABLE_PRIVATE_KEY \
+ OSSL_PARAM_BN(OSSL_PKEY_PARAM_PRIV_KEY, NULL, 0)
+static const OSSL_PARAM dh_all_types[] = {
+ DH_IMEXPORTABLE_PARAMETERS,
+ DH_IMEXPORTABLE_PUBLIC_KEY,
+ DH_IMEXPORTABLE_PRIVATE_KEY,
+ OSSL_PARAM_END
+};
+static const OSSL_PARAM dh_parameter_types[] = {
+ DH_IMEXPORTABLE_PARAMETERS,
+ OSSL_PARAM_END
+};
+static const OSSL_PARAM dh_key_types[] = {
+ DH_IMEXPORTABLE_PUBLIC_KEY,
+ DH_IMEXPORTABLE_PRIVATE_KEY,
+ OSSL_PARAM_END
+};
+static const OSSL_PARAM *dh_types[] = {
+ NULL, /* Index 0 = none of them */
+ dh_parameter_types, /* Index 1 = parameter types */
+ dh_key_types, /* Index 2 = key types */
+ dh_all_types /* Index 3 = 1 + 2 */
+};
+
+static const OSSL_PARAM *dh_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 dh_types[type_select];
+}
+
+static const OSSL_PARAM *dh_import_types(int selection)
+{
+ return dh_imexport_types(selection);
+}
+
+static const OSSL_PARAM *dh_export_types(int selection)
+{
+ return dh_imexport_types(selection);
+}
+
static ossl_inline int dh_get_params(void *key, OSSL_PARAM params[])
{
DH *dh = key;
if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_MAX_SIZE)) != NULL
&& !OSSL_PARAM_set_int(p, DH_size(dh)))
return 0;
+ if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_TLS_ENCODED_PT)) != NULL) {
+ if (p->data_type != OSSL_PARAM_OCTET_STRING)
+ return 0;
+ p->return_size = dh_key2buf(dh, (unsigned char **)&p->data,
+ p->data_size, 0);
+ if (p->return_size == 0)
+ return 0;
+ }
+
+ return ffc_params_todata(dh_get0_params(dh), NULL, params)
+ && dh_key_todata(dh, NULL, params);
+}
+
+static const OSSL_PARAM dh_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_octet_string(OSSL_PKEY_PARAM_TLS_ENCODED_PT, NULL, 0),
+ DH_IMEXPORTABLE_PARAMETERS,
+ DH_IMEXPORTABLE_PUBLIC_KEY,
+ DH_IMEXPORTABLE_PRIVATE_KEY,
+ OSSL_PARAM_END
+};
+
+static const OSSL_PARAM *dh_gettable_params(void)
+{
+ return dh_params;
+}
+
+static const OSSL_PARAM dh_known_settable_params[] = {
+ OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_TLS_ENCODED_PT, NULL, 0),
+ OSSL_PARAM_END
+};
+
+static const OSSL_PARAM *dh_settable_params(void)
+{
+ return dh_known_settable_params;
+}
+
+static int dh_set_params(void *key, const OSSL_PARAM params[])
+{
+ DH *dh = key;
+ const OSSL_PARAM *p;
+
+ p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_TLS_ENCODED_PT);
+ if (p != NULL
+ && (p->data_type != OSSL_PARAM_OCTET_STRING
+ || !dh_buf2key(dh, p->data, p->data_size)))
+ return 0;
+
return 1;
}
+static int dh_validate_public(DH *dh)
+{
+ const BIGNUM *pub_key = NULL;
+
+ DH_get0_key(dh, &pub_key, NULL);
+ if (pub_key == NULL)
+ return 0;
+ return DH_check_pub_key_ex(dh, pub_key);
+}
+
+static int dh_validate_private(DH *dh)
+{
+ int status = 0;
+ const BIGNUM *priv_key = NULL;
+
+ DH_get0_key(dh, NULL, &priv_key);
+ if (priv_key == NULL)
+ return 0;
+ return dh_check_priv_key(dh, priv_key, &status);;
+}
+
+static int dh_validate(void *keydata, int selection)
+{
+ DH *dh = keydata;
+ int ok = 0;
+
+ if ((selection & DH_POSSIBLE_SELECTIONS) != 0)
+ ok = 1;
+
+ if ((selection & OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS) != 0)
+ ok = ok && DH_check_params_ex(dh);
+
+ if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0)
+ ok = ok && dh_validate_public(dh);
+
+ if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0)
+ ok = ok && dh_validate_private(dh);
+
+ if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR)
+ == OSSL_KEYMGMT_SELECT_KEYPAIR)
+ ok = ok && dh_check_pairwise(dh);
+ return ok;
+}
+
+static void *dh_gen_init(void *provctx, int selection)
+{
+ OPENSSL_CTX *libctx = PROV_LIBRARY_CONTEXT_OF(provctx);
+ struct dh_gen_ctx *gctx = NULL;
+
+ if ((selection & (OSSL_KEYMGMT_SELECT_KEYPAIR
+ | OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS)) == 0)
+ return NULL;
+
+ if ((gctx = OPENSSL_zalloc(sizeof(*gctx))) != NULL) {
+ gctx->selection = selection;
+ gctx->libctx = libctx;
+ gctx->pbits = 2048;
+ gctx->qbits = 224;
+ gctx->mdname = NULL;
+ gctx->gen_type = DH_PARAMGEN_TYPE_FIPS_186_4;
+ gctx->gindex = -1;
+ gctx->hindex = 0;
+ gctx->pcounter = -1;
+ gctx->generator = DH_GENERATOR_2;
+ }
+ return gctx;
+}
+
+static int dh_gen_set_template(void *genctx, void *templ)
+{
+ struct dh_gen_ctx *gctx = genctx;
+ DH *dh = templ;
+
+ if (gctx == NULL || dh == NULL)
+ return 0;
+ gctx->ffc_params = dh_get0_params(dh);
+ return 1;
+}
+
+static int dh_set_gen_seed(struct dh_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 dh_gen_set_params(void *genctx, const OSSL_PARAM params[])
+{
+ struct dh_gen_ctx *gctx = genctx;
+ const OSSL_PARAM *p;
+
+ if (gctx == NULL)
+ return 0;
+
+ p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_TYPE);
+ if (p != NULL) {
+ if (p->data_type != OSSL_PARAM_UTF8_STRING
+ || ((gctx->gen_type = dh_gen_type_name2id(p->data)) == -1)) {
+ ERR_raise(ERR_LIB_PROV, ERR_R_PASSED_INVALID_ARGUMENT);
+ return 0;
+ }
+ }
+ p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_GROUP_NAME);
+ if (p != NULL) {
+ if (p->data_type != OSSL_PARAM_UTF8_STRING
+ || ((gctx->group_nid = ffc_named_group_to_uid(p->data)) == NID_undef)) {
+ ERR_raise(ERR_LIB_PROV, ERR_R_PASSED_INVALID_ARGUMENT);
+ return 0;
+ }
+ gctx->gen_type = DH_PARAMGEN_TYPE_GROUP;
+ }
+ p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_DH_GENERATOR);
+ if (p != NULL && !OSSL_PARAM_get_int(p, &gctx->generator))
+ return 0;
+ 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
+ || !dh_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;
+ gctx->mdname = p->data;
+ }
+ 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;
+ gctx->mdprops = p->data;
+ }
+ p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_DH_PRIV_LEN);
+ if (p != NULL && !OSSL_PARAM_get_int(p, &gctx->priv_len))
+ return 0;
+ return 1;
+}
+
+static const OSSL_PARAM *dh_gen_settable_params(void *provctx)
+{
+ static OSSL_PARAM settable[] = {
+ OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_GROUP_NAME, NULL, 0),
+ OSSL_PARAM_int(OSSL_PKEY_PARAM_DH_PRIV_LEN, NULL),
+ OSSL_PARAM_int(OSSL_PKEY_PARAM_DH_GENERATOR, NULL),
+ 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 dh_gencb(int p, int n, BN_GENCB *cb)
+{
+ struct dh_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 *dh_gen(void *genctx, OSSL_CALLBACK *osslcb, void *cbarg)
+{
+ int ret = 0;
+ struct dh_gen_ctx *gctx = genctx;
+ DH *dh = NULL;
+ BN_GENCB *gencb = NULL;
+ FFC_PARAMS *ffc;
+
+ if (gctx == NULL)
+ return NULL;
+
+ /* For parameter generation - If there is a group name just create it */
+ if (gctx->gen_type == DH_PARAMGEN_TYPE_GROUP) {
+ /* Select a named group if there is not one already */
+ if (gctx->group_nid == NID_undef)
+ gctx->group_nid = dh_get_named_group_uid_from_size(gctx->pbits);
+ if (gctx->group_nid == NID_undef)
+ return NULL;
+ dh = dh_new_by_nid_with_libctx(gctx->libctx, gctx->group_nid);
+ if (dh == NULL)
+ return NULL;
+ ffc = dh_get0_params(dh);
+ } else {
+ dh = dh_new_with_libctx(gctx->libctx);
+ if (dh == NULL)
+ return NULL;
+ ffc = dh_get0_params(dh);
+
+ /* Copy the template value if one was passed */
+ if (gctx->ffc_params != NULL
+ && !ffc_params_copy(ffc, gctx->ffc_params))
+ goto end;
+
+ if (!ffc_params_set_seed(ffc, gctx->seed, gctx->seedlen))
+ goto end;
+ if (gctx->gindex != -1) {
+ ffc_params_set_gindex(ffc, gctx->gindex);
+ if (gctx->pcounter != -1)
+ ffc_params_set_pcounter(ffc, gctx->pcounter);
+ } else if (gctx->hindex != 0) {
+ ffc_params_set_h(ffc, gctx->hindex);
+ }
+ if (gctx->mdname != NULL) {
+ if (!ffc_set_digest(ffc, gctx->mdname, gctx->mdprops))
+ goto end;
+ }
+ gctx->cb = osslcb;
+ gctx->cbarg = cbarg;
+ gencb = BN_GENCB_new();
+ if (gencb != NULL)
+ BN_GENCB_set(gencb, dh_gencb, genctx);
+
+ if ((gctx->selection & OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS) != 0) {
+ /*
+ * NOTE: The old safe prime generator code is not used in fips mode,
+ * (i.e internally it ignores the generator and chooses a named
+ * group based on pbits.
+ */
+ if (gctx->gen_type == DH_PARAMGEN_TYPE_GENERATOR)
+ ret = DH_generate_parameters_ex(dh, gctx->pbits,
+ gctx->generator, gencb);
+ else
+ ret = dh_generate_ffc_parameters(dh, gctx->gen_type, gctx->pbits,
+ gctx->qbits, gencb);
+ if (ret <= 0)
+ goto end;
+ }
+ }
+
+ if ((gctx->selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0) {
+ if (ffc->p == NULL || ffc->g == NULL)
+ goto end;
+ if (gctx->priv_len > 0)
+ DH_set_length(dh, (long)gctx->priv_len);
+ if (DH_generate_key(dh) <= 0)
+ goto end;
+ }
+ ret = 1;
+end:
+ if (ret <= 0) {
+ DH_free(dh);
+ dh = NULL;
+ }
+ BN_GENCB_free(gencb);
+ return dh;
+}
+
+static void dh_gen_cleanup(void *genctx)
+{
+ struct dh_gen_ctx *gctx = genctx;
+
+ if (gctx == NULL)
+ return;
+
+ OPENSSL_clear_free(gctx->seed, gctx->seedlen);
+ OPENSSL_free(gctx);
+}
+
const OSSL_DISPATCH dh_keymgmt_functions[] = {
{ OSSL_FUNC_KEYMGMT_NEW, (void (*)(void))dh_newdata },
+ { OSSL_FUNC_KEYMGMT_GEN_INIT, (void (*)(void))dh_gen_init },
+ { OSSL_FUNC_KEYMGMT_GEN_SET_TEMPLATE, (void (*)(void))dh_gen_set_template },
+ { OSSL_FUNC_KEYMGMT_GEN_SET_PARAMS, (void (*)(void))dh_gen_set_params },
+ { OSSL_FUNC_KEYMGMT_GEN_SETTABLE_PARAMS,
+ (void (*)(void))dh_gen_settable_params },
+ { OSSL_FUNC_KEYMGMT_GEN, (void (*)(void))dh_gen },
+ { OSSL_FUNC_KEYMGMT_GEN_CLEANUP, (void (*)(void))dh_gen_cleanup },
{ OSSL_FUNC_KEYMGMT_FREE, (void (*)(void))dh_freedata },
+ { OSSL_FUNC_KEYMGMT_GET_PARAMS, (void (*) (void))dh_get_params },
+ { OSSL_FUNC_KEYMGMT_GETTABLE_PARAMS, (void (*) (void))dh_gettable_params },
+ { OSSL_FUNC_KEYMGMT_SET_PARAMS, (void (*) (void))dh_set_params },
+ { OSSL_FUNC_KEYMGMT_SETTABLE_PARAMS, (void (*) (void))dh_settable_params },
{ OSSL_FUNC_KEYMGMT_HAS, (void (*)(void))dh_has },
+ { OSSL_FUNC_KEYMGMT_MATCH, (void (*)(void))dh_match },
+ { OSSL_FUNC_KEYMGMT_VALIDATE, (void (*)(void))dh_validate },
{ OSSL_FUNC_KEYMGMT_IMPORT, (void (*)(void))dh_import },
+ { OSSL_FUNC_KEYMGMT_IMPORT_TYPES, (void (*)(void))dh_import_types },
{ OSSL_FUNC_KEYMGMT_EXPORT, (void (*)(void))dh_export },
- { OSSL_FUNC_KEYMGMT_GET_PARAMS, (void (*) (void))dh_get_params },
+ { OSSL_FUNC_KEYMGMT_EXPORT_TYPES, (void (*)(void))dh_export_types },
{ 0, NULL }
};
projects / openssl.git / blobdiff