/*
- * Copyright 2020 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2020-2024 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
*/
#include <assert.h>
-#include <openssl/core_numbers.h>
+#include <string.h>
+#include <openssl/core_dispatch.h>
#include <openssl/core_names.h>
+#include <openssl/params.h>
+#include <openssl/err.h>
+#include <openssl/proverr.h>
+#include <openssl/evp.h>
+#include <openssl/rand.h>
+#include <openssl/self_test.h>
+#include "internal/param_build_set.h"
+#include <openssl/param_build.h>
#include "crypto/ecx.h"
#include "prov/implementations.h"
#include "prov/providercommon.h"
-#include "internal/param_build_set.h"
+#include "prov/provider_ctx.h"
+#include "prov/ecx.h"
+#ifdef S390X_EC_ASM
+# include "s390x_arch.h"
+# include <openssl/sha.h> /* For SHA512_DIGEST_LENGTH */
+#endif
-static OSSL_OP_keymgmt_new_fn x25519_new_key;
-static OSSL_OP_keymgmt_new_fn x448_new_key;
-static OSSL_OP_keymgmt_new_fn ed25519_new_key;
-static OSSL_OP_keymgmt_new_fn ed448_new_key;
-static OSSL_OP_keymgmt_get_params_fn x25519_get_params;
-static OSSL_OP_keymgmt_get_params_fn x448_get_params;
-static OSSL_OP_keymgmt_get_params_fn ed25519_get_params;
-static OSSL_OP_keymgmt_get_params_fn ed448_get_params;
-static OSSL_OP_keymgmt_gettable_params_fn ecx_gettable_params;
-static OSSL_OP_keymgmt_has_fn ecx_has;
-static OSSL_OP_keymgmt_import_fn ecx_import;
-static OSSL_OP_keymgmt_import_types_fn ecx_imexport_types;
-static OSSL_OP_keymgmt_export_fn ecx_export;
-static OSSL_OP_keymgmt_export_types_fn ecx_imexport_types;
+static OSSL_FUNC_keymgmt_new_fn x25519_new_key;
+static OSSL_FUNC_keymgmt_new_fn x448_new_key;
+static OSSL_FUNC_keymgmt_new_fn ed25519_new_key;
+static OSSL_FUNC_keymgmt_new_fn ed448_new_key;
+static OSSL_FUNC_keymgmt_gen_init_fn x25519_gen_init;
+static OSSL_FUNC_keymgmt_gen_init_fn x448_gen_init;
+static OSSL_FUNC_keymgmt_gen_init_fn ed25519_gen_init;
+static OSSL_FUNC_keymgmt_gen_init_fn ed448_gen_init;
+static OSSL_FUNC_keymgmt_gen_fn x25519_gen;
+static OSSL_FUNC_keymgmt_gen_fn x448_gen;
+static OSSL_FUNC_keymgmt_gen_fn ed25519_gen;
+static OSSL_FUNC_keymgmt_gen_fn ed448_gen;
+static OSSL_FUNC_keymgmt_gen_cleanup_fn ecx_gen_cleanup;
+static OSSL_FUNC_keymgmt_gen_set_params_fn ecx_gen_set_params;
+static OSSL_FUNC_keymgmt_gen_settable_params_fn ecx_gen_settable_params;
+static OSSL_FUNC_keymgmt_load_fn ecx_load;
+static OSSL_FUNC_keymgmt_get_params_fn x25519_get_params;
+static OSSL_FUNC_keymgmt_get_params_fn x448_get_params;
+static OSSL_FUNC_keymgmt_get_params_fn ed25519_get_params;
+static OSSL_FUNC_keymgmt_get_params_fn ed448_get_params;
+static OSSL_FUNC_keymgmt_gettable_params_fn x25519_gettable_params;
+static OSSL_FUNC_keymgmt_gettable_params_fn x448_gettable_params;
+static OSSL_FUNC_keymgmt_gettable_params_fn ed25519_gettable_params;
+static OSSL_FUNC_keymgmt_gettable_params_fn ed448_gettable_params;
+static OSSL_FUNC_keymgmt_set_params_fn x25519_set_params;
+static OSSL_FUNC_keymgmt_set_params_fn x448_set_params;
+static OSSL_FUNC_keymgmt_set_params_fn ed25519_set_params;
+static OSSL_FUNC_keymgmt_set_params_fn ed448_set_params;
+static OSSL_FUNC_keymgmt_settable_params_fn x25519_settable_params;
+static OSSL_FUNC_keymgmt_settable_params_fn x448_settable_params;
+static OSSL_FUNC_keymgmt_settable_params_fn ed25519_settable_params;
+static OSSL_FUNC_keymgmt_settable_params_fn ed448_settable_params;
+static OSSL_FUNC_keymgmt_has_fn ecx_has;
+static OSSL_FUNC_keymgmt_match_fn ecx_match;
+static OSSL_FUNC_keymgmt_validate_fn x25519_validate;
+static OSSL_FUNC_keymgmt_validate_fn x448_validate;
+static OSSL_FUNC_keymgmt_validate_fn ed25519_validate;
+static OSSL_FUNC_keymgmt_validate_fn ed448_validate;
+static OSSL_FUNC_keymgmt_import_fn ecx_import;
+static OSSL_FUNC_keymgmt_import_types_fn ecx_imexport_types;
+static OSSL_FUNC_keymgmt_export_fn ecx_export;
+static OSSL_FUNC_keymgmt_export_types_fn ecx_imexport_types;
+static OSSL_FUNC_keymgmt_dup_fn ecx_dup;
#define ECX_POSSIBLE_SELECTIONS (OSSL_KEYMGMT_SELECT_KEYPAIR)
+struct ecx_gen_ctx {
+ OSSL_LIB_CTX *libctx;
+ char *propq;
+ ECX_KEY_TYPE type;
+ int selection;
+ unsigned char *dhkem_ikm;
+ size_t dhkem_ikmlen;
+};
+
+#ifdef S390X_EC_ASM
+static void *s390x_ecx_keygen25519(struct ecx_gen_ctx *gctx);
+static void *s390x_ecx_keygen448(struct ecx_gen_ctx *gctx);
+static void *s390x_ecd_keygen25519(struct ecx_gen_ctx *gctx);
+static void *s390x_ecd_keygen448(struct ecx_gen_ctx *gctx);
+#endif
+
static void *x25519_new_key(void *provctx)
{
- return ecx_key_new(ECX_KEY_TYPE_X25519, 0);
+ if (!ossl_prov_is_running())
+ return 0;
+ return ossl_ecx_key_new(PROV_LIBCTX_OF(provctx), ECX_KEY_TYPE_X25519, 0,
+ NULL);
}
static void *x448_new_key(void *provctx)
{
- return ecx_key_new(ECX_KEY_TYPE_X448, 0);
+ if (!ossl_prov_is_running())
+ return 0;
+ return ossl_ecx_key_new(PROV_LIBCTX_OF(provctx), ECX_KEY_TYPE_X448, 0,
+ NULL);
}
static void *ed25519_new_key(void *provctx)
{
- return ecx_key_new(ECX_KEY_TYPE_ED25519, 0);
+ if (!ossl_prov_is_running())
+ return 0;
+ return ossl_ecx_key_new(PROV_LIBCTX_OF(provctx), ECX_KEY_TYPE_ED25519, 0,
+ NULL);
}
static void *ed448_new_key(void *provctx)
{
- return ecx_key_new(ECX_KEY_TYPE_ED448, 0);
+ if (!ossl_prov_is_running())
+ return 0;
+ return ossl_ecx_key_new(PROV_LIBCTX_OF(provctx), ECX_KEY_TYPE_ED448, 0,
+ NULL);
}
-static int ecx_has(void *keydata, int selection)
+static int ecx_has(const void *keydata, int selection)
{
- ECX_KEY *key = keydata;
+ const ECX_KEY *key = keydata;
int ok = 0;
- if (key != NULL) {
- if ((selection & ECX_POSSIBLE_SELECTIONS) != 0)
- ok = 1;
+ if (ossl_prov_is_running() && key != NULL) {
+ /*
+ * ECX keys always have all the parameters they need (i.e. none).
+ * Therefore we always return with 1, if asked about parameters.
+ */
+ ok = 1;
if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0)
ok = ok && key->haspubkey;
return ok;
}
+static int ecx_match(const void *keydata1, const void *keydata2, int selection)
+{
+ const ECX_KEY *key1 = keydata1;
+ const ECX_KEY *key2 = keydata2;
+ int ok = 1;
+
+ if (!ossl_prov_is_running())
+ return 0;
+
+ if ((selection & OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS) != 0)
+ ok = ok && key1->type == key2->type;
+ if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0) {
+ int key_checked = 0;
+
+ if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0) {
+ const unsigned char *pa = key1->haspubkey ? key1->pubkey : NULL;
+ const unsigned char *pb = key2->haspubkey ? key2->pubkey : NULL;
+ size_t pal = key1->keylen;
+ size_t pbl = key2->keylen;
+
+ if (pa != NULL && pb != NULL) {
+ ok = ok
+ && key1->type == key2->type
+ && pal == pbl
+ && CRYPTO_memcmp(pa, pb, pal) == 0;
+ key_checked = 1;
+ }
+ }
+ if (!key_checked
+ && (selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0) {
+ const unsigned char *pa = key1->privkey;
+ const unsigned char *pb = key2->privkey;
+ size_t pal = key1->keylen;
+ size_t pbl = key2->keylen;
+
+ if (pa != NULL && pb != NULL) {
+ ok = ok
+ && key1->type == key2->type
+ && pal == pbl
+ && CRYPTO_memcmp(pa, pb, pal) == 0;
+ key_checked = 1;
+ }
+ }
+ ok = ok && key_checked;
+ }
+ return ok;
+}
+
static int ecx_import(void *keydata, int selection, const OSSL_PARAM params[])
{
ECX_KEY *key = keydata;
int ok = 1;
- int include_private = 0;
+ int include_private;
- if (key == NULL)
+ if (!ossl_prov_is_running() || key == NULL)
return 0;
- if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) == 0)
+ if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) == 0)
return 0;
- include_private = ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0);
- if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0)
- ok = ok && ecx_key_fromdata(key, params, include_private);
+ include_private = selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY ? 1 : 0;
+ ok = ok && ossl_ecx_key_fromdata(key, params, include_private);
return ok;
}
static int key_to_params(ECX_KEY *key, OSSL_PARAM_BLD *tmpl,
- OSSL_PARAM params[])
+ OSSL_PARAM params[], int include_private)
{
if (key == NULL)
return 0;
key->pubkey, key->keylen))
return 0;
- if (key->privkey != NULL
+ if (include_private
+ && key->privkey != NULL
&& !ossl_param_build_set_octet_string(tmpl, params,
OSSL_PKEY_PARAM_PRIV_KEY,
key->privkey, key->keylen))
OSSL_PARAM *params = NULL;
int ret = 0;
- if (key == NULL)
+ if (!ossl_prov_is_running() || key == NULL)
+ return 0;
+
+ if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) == 0)
return 0;
tmpl = OSSL_PARAM_BLD_new();
if (tmpl == NULL)
return 0;
- if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0
- && !key_to_params(key, tmpl, NULL))
- goto err;
+ if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0) {
+ int include_private = ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0);
- if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0
- && !key_to_params(key, tmpl, NULL))
- goto err;
+ if (!key_to_params(key, tmpl, NULL, include_private))
+ goto err;
+ }
params = OSSL_PARAM_BLD_to_param(tmpl);
if (params == NULL)
goto err;
ret = param_cb(params, cbarg);
- OSSL_PARAM_BLD_free_params(params);
+ OSSL_PARAM_free(params);
err:
OSSL_PARAM_BLD_free(tmpl);
return ret;
if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_MAX_SIZE)) != NULL
&& !OSSL_PARAM_set_int(p, size))
return 0;
- return key_to_params(ecx, NULL, params);
+ if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_ENCODED_PUBLIC_KEY)) != NULL
+ && (ecx->type == ECX_KEY_TYPE_X25519
+ || ecx->type == ECX_KEY_TYPE_X448)) {
+ if (!OSSL_PARAM_set_octet_string(p, ecx->pubkey, ecx->keylen))
+ return 0;
+ }
+
+ return key_to_params(ecx, NULL, params, 1);
+}
+
+static int ed_get_params(void *key, OSSL_PARAM params[])
+{
+ OSSL_PARAM *p;
+
+ if ((p = OSSL_PARAM_locate(params,
+ OSSL_PKEY_PARAM_MANDATORY_DIGEST)) != NULL
+ && !OSSL_PARAM_set_utf8_string(p, ""))
+ return 0;
+ return 1;
}
static int x25519_get_params(void *key, OSSL_PARAM params[])
static int ed25519_get_params(void *key, OSSL_PARAM params[])
{
return ecx_get_params(key, params, ED25519_BITS, ED25519_SECURITY_BITS,
- ED25519_KEYLEN);
+ ED25519_SIGSIZE)
+ && ed_get_params(key, params);
}
static int ed448_get_params(void *key, OSSL_PARAM params[])
{
return ecx_get_params(key, params, ED448_BITS, ED448_SECURITY_BITS,
- ED448_KEYLEN);
+ ED448_SIGSIZE)
+ && ed_get_params(key, params);
}
-static const OSSL_PARAM ecx_params[] = {
+static const OSSL_PARAM ecx_gettable_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_MANDATORY_DIGEST, NULL, 0),
+ OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_ENCODED_PUBLIC_KEY, NULL, 0),
ECX_KEY_TYPES(),
OSSL_PARAM_END
};
-static const OSSL_PARAM *ecx_gettable_params(void)
+static const OSSL_PARAM ed_gettable_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),
+ ECX_KEY_TYPES(),
+ OSSL_PARAM_END
+};
+
+static const OSSL_PARAM *x25519_gettable_params(void *provctx)
+{
+ return ecx_gettable_params;
+}
+
+static const OSSL_PARAM *x448_gettable_params(void *provctx)
+{
+ return ecx_gettable_params;
+}
+
+static const OSSL_PARAM *ed25519_gettable_params(void *provctx)
+{
+ return ed_gettable_params;
+}
+
+static const OSSL_PARAM *ed448_gettable_params(void *provctx)
+{
+ return ed_gettable_params;
+}
+
+static int set_property_query(ECX_KEY *ecxkey, const char *propq)
+{
+ OPENSSL_free(ecxkey->propq);
+ ecxkey->propq = NULL;
+ if (propq != NULL) {
+ ecxkey->propq = OPENSSL_strdup(propq);
+ if (ecxkey->propq == NULL)
+ return 0;
+ }
+ return 1;
+}
+
+static int ecx_set_params(void *key, const OSSL_PARAM params[])
+{
+ ECX_KEY *ecxkey = key;
+ const OSSL_PARAM *p;
+
+ if (params == NULL)
+ return 1;
+
+ p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_ENCODED_PUBLIC_KEY);
+ if (p != NULL) {
+ void *buf = ecxkey->pubkey;
+
+ if (p->data_size != ecxkey->keylen
+ || !OSSL_PARAM_get_octet_string(p, &buf, sizeof(ecxkey->pubkey),
+ NULL))
+ return 0;
+ OPENSSL_clear_free(ecxkey->privkey, ecxkey->keylen);
+ ecxkey->privkey = NULL;
+ ecxkey->haspubkey = 1;
+ }
+ p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_PROPERTIES);
+ if (p != NULL) {
+ if (p->data_type != OSSL_PARAM_UTF8_STRING
+ || !set_property_query(ecxkey, p->data))
+ return 0;
+ }
+
+ return 1;
+}
+
+static int x25519_set_params(void *key, const OSSL_PARAM params[])
+{
+ return ecx_set_params(key, params);
+}
+
+static int x448_set_params(void *key, const OSSL_PARAM params[])
+{
+ return ecx_set_params(key, params);
+}
+
+static int ed25519_set_params(void *key, const OSSL_PARAM params[])
+{
+ return 1;
+}
+
+static int ed448_set_params(void *key, const OSSL_PARAM params[])
+{
+ return 1;
+}
+
+static const OSSL_PARAM ecx_settable_params[] = {
+ OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_ENCODED_PUBLIC_KEY, NULL, 0),
+ OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_PROPERTIES, NULL, 0),
+ OSSL_PARAM_END
+};
+
+static const OSSL_PARAM ed_settable_params[] = {
+ OSSL_PARAM_END
+};
+
+static const OSSL_PARAM *x25519_settable_params(void *provctx)
+{
+ return ecx_settable_params;
+}
+
+static const OSSL_PARAM *x448_settable_params(void *provctx)
+{
+ return ecx_settable_params;
+}
+
+static const OSSL_PARAM *ed25519_settable_params(void *provctx)
+{
+ return ed_settable_params;
+}
+
+static const OSSL_PARAM *ed448_settable_params(void *provctx)
+{
+ return ed_settable_params;
+}
+
+static void *ecx_gen_init(void *provctx, int selection,
+ const OSSL_PARAM params[], ECX_KEY_TYPE type)
+{
+ OSSL_LIB_CTX *libctx = PROV_LIBCTX_OF(provctx);
+ struct ecx_gen_ctx *gctx = NULL;
+
+ if (!ossl_prov_is_running())
+ return NULL;
+
+ if ((gctx = OPENSSL_zalloc(sizeof(*gctx))) != NULL) {
+ gctx->libctx = libctx;
+ gctx->type = type;
+ gctx->selection = selection;
+ }
+ if (!ecx_gen_set_params(gctx, params)) {
+ OPENSSL_free(gctx);
+ gctx = NULL;
+ }
+ return gctx;
+}
+
+static void *x25519_gen_init(void *provctx, int selection,
+ const OSSL_PARAM params[])
+{
+ return ecx_gen_init(provctx, selection, params, ECX_KEY_TYPE_X25519);
+}
+
+static void *x448_gen_init(void *provctx, int selection,
+ const OSSL_PARAM params[])
+{
+ return ecx_gen_init(provctx, selection, params, ECX_KEY_TYPE_X448);
+}
+
+static void *ed25519_gen_init(void *provctx, int selection,
+ const OSSL_PARAM params[])
+{
+ return ecx_gen_init(provctx, selection, params, ECX_KEY_TYPE_ED25519);
+}
+
+static void *ed448_gen_init(void *provctx, int selection,
+ const OSSL_PARAM params[])
+{
+ return ecx_gen_init(provctx, selection, params, ECX_KEY_TYPE_ED448);
+}
+
+static int ecx_gen_set_params(void *genctx, const OSSL_PARAM params[])
+{
+ struct ecx_gen_ctx *gctx = genctx;
+ const OSSL_PARAM *p;
+
+ if (gctx == NULL)
+ return 0;
+
+ p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_GROUP_NAME);
+ if (p != NULL) {
+ const char *groupname = NULL;
+
+ /*
+ * We optionally allow setting a group name - but each algorithm only
+ * support one such name, so all we do is verify that it is the one we
+ * expected.
+ */
+ switch (gctx->type) {
+ case ECX_KEY_TYPE_X25519:
+ groupname = "x25519";
+ break;
+ case ECX_KEY_TYPE_X448:
+ groupname = "x448";
+ break;
+ default:
+ /* We only support this for key exchange at the moment */
+ break;
+ }
+ if (p->data_type != OSSL_PARAM_UTF8_STRING
+ || groupname == NULL
+ || OPENSSL_strcasecmp(p->data, groupname) != 0) {
+ ERR_raise(ERR_LIB_PROV, ERR_R_PASSED_INVALID_ARGUMENT);
+ return 0;
+ }
+ }
+ p = OSSL_PARAM_locate_const(params, OSSL_KDF_PARAM_PROPERTIES);
+ if (p != NULL) {
+ if (p->data_type != OSSL_PARAM_UTF8_STRING)
+ return 0;
+ OPENSSL_free(gctx->propq);
+ gctx->propq = OPENSSL_strdup(p->data);
+ if (gctx->propq == NULL)
+ return 0;
+ }
+ p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_DHKEM_IKM);
+ if (p != NULL) {
+ if (p->data_size != 0 && p->data != NULL) {
+ OPENSSL_free(gctx->dhkem_ikm);
+ gctx->dhkem_ikm = NULL;
+ if (!OSSL_PARAM_get_octet_string(p, (void **)&gctx->dhkem_ikm, 0,
+ &gctx->dhkem_ikmlen))
+ return 0;
+ }
+ }
+
+ return 1;
+}
+
+static const OSSL_PARAM *ecx_gen_settable_params(ossl_unused void *genctx,
+ ossl_unused void *provctx)
+{
+ static OSSL_PARAM settable[] = {
+ OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_GROUP_NAME, NULL, 0),
+ OSSL_PARAM_utf8_string(OSSL_KDF_PARAM_PROPERTIES, NULL, 0),
+ OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_DHKEM_IKM, NULL, 0),
+ OSSL_PARAM_END
+ };
+ return settable;
+}
+
+#ifdef FIPS_MODULE
+/*
+ * Refer: FIPS 140-3 IG 10.3.A Additional Comment 1
+ * Perform a pairwise test for EDDSA by signing and verifying signature.
+ *
+ * The parameter `self_test` is used to indicate whether to create OSSL_SELF_TEST
+ * instance.
+ */
+static int ecd_fips140_pairwise_test(const ECX_KEY *ecx, int type, int self_test)
+{
+ int ret = 0;
+ OSSL_SELF_TEST *st = NULL;
+ OSSL_CALLBACK *cb = NULL;
+ void *cbarg = NULL;
+
+ unsigned char msg[16] = {0};
+ size_t msg_len = sizeof(msg);
+ unsigned char sig[ED448_SIGSIZE] = {0};
+
+ int is_ed25519 = (type == ECX_KEY_TYPE_ED25519) ? 1 : 0;
+ int operation_result = 0;
+
+ /*
+ * The functions `OSSL_SELF_TEST_*` will return directly if parameter `st`
+ * is NULL.
+ */
+ if (self_test) {
+ OSSL_SELF_TEST_get_callback(ecx->libctx, &cb, &cbarg);
+
+ st = OSSL_SELF_TEST_new(cb, cbarg);
+ if (st == NULL)
+ return 0;
+ }
+
+ OSSL_SELF_TEST_onbegin(st, OSSL_SELF_TEST_TYPE_PCT,
+ OSSL_SELF_TEST_DESC_PCT_EDDSA);
+
+ if (is_ed25519)
+ operation_result = ossl_ed25519_sign(sig, msg, msg_len, ecx->pubkey,
+ ecx->privkey, 0, 0, 0, NULL, 0,
+ ecx->libctx, ecx->propq);
+ else
+ operation_result = ossl_ed448_sign(ecx->libctx, sig, msg, msg_len,
+ ecx->pubkey, ecx->privkey, NULL, 0,
+ 0, ecx->propq);
+ if (operation_result != 1)
+ goto err;
+
+ OSSL_SELF_TEST_oncorrupt_byte(st, sig);
+
+ if (is_ed25519)
+ operation_result = ossl_ed25519_verify(msg, msg_len, sig, ecx->pubkey,
+ 0, 0, 0, NULL, 0, ecx->libctx,
+ ecx->propq);
+ else
+ operation_result = ossl_ed448_verify(ecx->libctx, msg, msg_len, sig,
+ ecx->pubkey, NULL, 0, 0, ecx->propq);
+ if (operation_result != 1)
+ goto err;
+
+ ret = 1;
+err:
+ OSSL_SELF_TEST_onend(st, ret);
+ OSSL_SELF_TEST_free(st);
+ return ret;
+}
+#endif
+
+static void *ecx_gen(struct ecx_gen_ctx *gctx)
+{
+ ECX_KEY *key;
+ unsigned char *privkey;
+
+ if (gctx == NULL)
+ return NULL;
+ if ((key = ossl_ecx_key_new(gctx->libctx, gctx->type, 0,
+ gctx->propq)) == NULL) {
+ ERR_raise(ERR_LIB_PROV, ERR_R_EC_LIB);
+ return NULL;
+ }
+
+ /* If we're doing parameter generation then we just return a blank key */
+ if ((gctx->selection & OSSL_KEYMGMT_SELECT_KEYPAIR) == 0)
+ return key;
+
+ if ((privkey = ossl_ecx_key_allocate_privkey(key)) == NULL) {
+ ERR_raise(ERR_LIB_PROV, ERR_R_EC_LIB);
+ goto err;
+ }
+#ifndef FIPS_MODULE
+ if (gctx->dhkem_ikm != NULL && gctx->dhkem_ikmlen != 0) {
+ if (gctx->type == ECX_KEY_TYPE_ED25519
+ || gctx->type == ECX_KEY_TYPE_ED448)
+ goto err;
+ if (!ossl_ecx_dhkem_derive_private(key, privkey,
+ gctx->dhkem_ikm, gctx->dhkem_ikmlen))
+ goto err;
+ } else
+#endif
+ {
+ if (RAND_priv_bytes_ex(gctx->libctx, privkey, key->keylen, 0) <= 0)
+ goto err;
+ }
+
+ switch (gctx->type) {
+ case ECX_KEY_TYPE_X25519:
+ privkey[0] &= 248;
+ privkey[X25519_KEYLEN - 1] &= 127;
+ privkey[X25519_KEYLEN - 1] |= 64;
+ ossl_x25519_public_from_private(key->pubkey, privkey);
+ break;
+ case ECX_KEY_TYPE_X448:
+ privkey[0] &= 252;
+ privkey[X448_KEYLEN - 1] |= 128;
+ ossl_x448_public_from_private(key->pubkey, privkey);
+ break;
+ case ECX_KEY_TYPE_ED25519:
+ if (!ossl_ed25519_public_from_private(gctx->libctx, key->pubkey, privkey,
+ gctx->propq))
+ goto err;
+ break;
+ case ECX_KEY_TYPE_ED448:
+ if (!ossl_ed448_public_from_private(gctx->libctx, key->pubkey, privkey,
+ gctx->propq))
+ goto err;
+ break;
+ }
+ key->haspubkey = 1;
+ return key;
+err:
+ ossl_ecx_key_free(key);
+ return NULL;
+}
+
+static void *x25519_gen(void *genctx, OSSL_CALLBACK *osslcb, void *cbarg)
+{
+ struct ecx_gen_ctx *gctx = genctx;
+
+ if (!ossl_prov_is_running())
+ return 0;
+
+#ifdef S390X_EC_ASM
+ if (OPENSSL_s390xcap_P.pcc[1] & S390X_CAPBIT(S390X_SCALAR_MULTIPLY_X25519))
+ return s390x_ecx_keygen25519(gctx);
+#endif
+ return ecx_gen(gctx);
+}
+
+static void *x448_gen(void *genctx, OSSL_CALLBACK *osslcb, void *cbarg)
+{
+ struct ecx_gen_ctx *gctx = genctx;
+
+ if (!ossl_prov_is_running())
+ return 0;
+
+#ifdef S390X_EC_ASM
+ if (OPENSSL_s390xcap_P.pcc[1] & S390X_CAPBIT(S390X_SCALAR_MULTIPLY_X448))
+ return s390x_ecx_keygen448(gctx);
+#endif
+ return ecx_gen(gctx);
+}
+
+static void *ed25519_gen(void *genctx, OSSL_CALLBACK *osslcb, void *cbarg)
+{
+ ECX_KEY *key = NULL;
+ struct ecx_gen_ctx *gctx = genctx;
+
+ if (!ossl_prov_is_running())
+ return 0;
+
+#ifdef S390X_EC_ASM
+ if (OPENSSL_s390xcap_P.pcc[1] & S390X_CAPBIT(S390X_SCALAR_MULTIPLY_ED25519)
+ && OPENSSL_s390xcap_P.kdsa[0] & S390X_CAPBIT(S390X_EDDSA_SIGN_ED25519)
+ && OPENSSL_s390xcap_P.kdsa[0]
+ & S390X_CAPBIT(S390X_EDDSA_VERIFY_ED25519)) {
+ key = s390x_ecd_keygen25519(gctx);
+ } else
+#endif
+ {
+ key = ecx_gen(gctx);
+ }
+
+#ifdef FIPS_MODULE
+ /* Exit if keygen failed OR we are doing parameter generation (blank key) */
+ if (!key || ((gctx->selection & OSSL_KEYMGMT_SELECT_KEYPAIR) == 0))
+ return key;
+ if (ecd_fips140_pairwise_test(key, ECX_KEY_TYPE_ED25519, 1) != 1) {
+ ossl_set_error_state(OSSL_SELF_TEST_TYPE_PCT);
+ ossl_ecx_key_free(key);
+ return NULL;
+ }
+#endif
+
+ return key;
+}
+
+static void *ed448_gen(void *genctx, OSSL_CALLBACK *osslcb, void *cbarg)
+{
+ ECX_KEY *key = NULL;
+ struct ecx_gen_ctx *gctx = genctx;
+
+ if (!ossl_prov_is_running())
+ return 0;
+
+#ifdef S390X_EC_ASM
+ if (OPENSSL_s390xcap_P.pcc[1] & S390X_CAPBIT(S390X_SCALAR_MULTIPLY_ED448)
+ && OPENSSL_s390xcap_P.kdsa[0] & S390X_CAPBIT(S390X_EDDSA_SIGN_ED448)
+ && OPENSSL_s390xcap_P.kdsa[0] & S390X_CAPBIT(S390X_EDDSA_VERIFY_ED448)) {
+ key = s390x_ecd_keygen448(gctx);
+ } else
+#endif
+ {
+ key = ecx_gen(gctx);
+ }
+
+#ifdef FIPS_MODULE
+ /* Exit if keygen failed OR we are doing parameter generation (blank key) */
+ if (!key || ((gctx->selection & OSSL_KEYMGMT_SELECT_KEYPAIR) == 0))
+ return key;
+ if (ecd_fips140_pairwise_test(key, ECX_KEY_TYPE_ED448, 1) != 1) {
+ ossl_set_error_state(OSSL_SELF_TEST_TYPE_PCT);
+ ossl_ecx_key_free(key);
+ return NULL;
+ }
+#endif
+
+ return key;
+}
+
+static void ecx_gen_cleanup(void *genctx)
+{
+ struct ecx_gen_ctx *gctx = genctx;
+
+ OPENSSL_clear_free(gctx->dhkem_ikm, gctx->dhkem_ikmlen);
+ OPENSSL_free(gctx->propq);
+ OPENSSL_free(gctx);
+}
+
+void *ecx_load(const void *reference, size_t reference_sz)
+{
+ ECX_KEY *key = NULL;
+
+ if (ossl_prov_is_running() && reference_sz == sizeof(key)) {
+ /* The contents of the reference is the address to our object */
+ key = *(ECX_KEY **)reference;
+ /* We grabbed, so we detach it */
+ *(ECX_KEY **)reference = NULL;
+ return key;
+ }
+ return NULL;
+}
+
+static void *ecx_dup(const void *keydata_from, int selection)
+{
+ if (ossl_prov_is_running())
+ return ossl_ecx_key_dup(keydata_from, selection);
+ return NULL;
+}
+
+static int ecx_key_pairwise_check(const ECX_KEY *ecx, int type)
+{
+ uint8_t pub[64];
+
+ switch (type) {
+ case ECX_KEY_TYPE_X25519:
+ ossl_x25519_public_from_private(pub, ecx->privkey);
+ break;
+ case ECX_KEY_TYPE_X448:
+ ossl_x448_public_from_private(pub, ecx->privkey);
+ break;
+ default:
+ return 0;
+ }
+ return CRYPTO_memcmp(ecx->pubkey, pub, ecx->keylen) == 0;
+}
+
+#ifdef FIPS_MODULE
+static int ecd_key_pairwise_check(const ECX_KEY *ecx, int type)
+{
+ return ecd_fips140_pairwise_test(ecx, type, 0);
+}
+#else
+static int ecd_key_pairwise_check(const ECX_KEY *ecx, int type)
+{
+ uint8_t pub[64];
+
+ switch (type) {
+ case ECX_KEY_TYPE_ED25519:
+ if (!ossl_ed25519_public_from_private(ecx->libctx, pub, ecx->privkey,
+ ecx->propq))
+ return 0;
+ break;
+ case ECX_KEY_TYPE_ED448:
+ if (!ossl_ed448_public_from_private(ecx->libctx, pub, ecx->privkey,
+ ecx->propq))
+ return 0;
+ break;
+ default:
+ return 0;
+ }
+ return CRYPTO_memcmp(ecx->pubkey, pub, ecx->keylen) == 0;
+}
+#endif
+
+static int ecx_validate(const void *keydata, int selection, int type, size_t keylen)
+{
+ const ECX_KEY *ecx = keydata;
+ int ok = keylen == ecx->keylen;
+
+ if (!ossl_prov_is_running())
+ return 0;
+
+ if ((selection & ECX_POSSIBLE_SELECTIONS) == 0)
+ return 1; /* nothing to validate */
+
+ if (!ok) {
+ ERR_raise(ERR_LIB_PROV, PROV_R_ALGORITHM_MISMATCH);
+ return 0;
+ }
+
+ if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0)
+ ok = ok && ecx->haspubkey;
+
+ if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0)
+ ok = ok && ecx->privkey != NULL;
+
+ if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != OSSL_KEYMGMT_SELECT_KEYPAIR)
+ return ok;
+
+ if (type == ECX_KEY_TYPE_ED25519 || type == ECX_KEY_TYPE_ED448)
+ ok = ok && ecd_key_pairwise_check(ecx, type);
+ else
+ ok = ok && ecx_key_pairwise_check(ecx, type);
+
+ return ok;
+}
+
+static int x25519_validate(const void *keydata, int selection, int checktype)
+{
+ return ecx_validate(keydata, selection, ECX_KEY_TYPE_X25519, X25519_KEYLEN);
+}
+
+static int x448_validate(const void *keydata, int selection, int checktype)
+{
+ return ecx_validate(keydata, selection, ECX_KEY_TYPE_X448, X448_KEYLEN);
+}
+
+static int ed25519_validate(const void *keydata, int selection, int checktype)
+{
+ return ecx_validate(keydata, selection, ECX_KEY_TYPE_ED25519, ED25519_KEYLEN);
+}
+
+static int ed448_validate(const void *keydata, int selection, int checktype)
{
- return ecx_params;
+ return ecx_validate(keydata, selection, ECX_KEY_TYPE_ED448, ED448_KEYLEN);
}
#define MAKE_KEYMGMT_FUNCTIONS(alg) \
- const OSSL_DISPATCH alg##_keymgmt_functions[] = { \
+ const OSSL_DISPATCH ossl_##alg##_keymgmt_functions[] = { \
{ OSSL_FUNC_KEYMGMT_NEW, (void (*)(void))alg##_new_key }, \
- { OSSL_FUNC_KEYMGMT_FREE, (void (*)(void))ecx_key_free }, \
+ { OSSL_FUNC_KEYMGMT_FREE, (void (*)(void))ossl_ecx_key_free }, \
{ OSSL_FUNC_KEYMGMT_GET_PARAMS, (void (*) (void))alg##_get_params }, \
- { OSSL_FUNC_KEYMGMT_GETTABLE_PARAMS, (void (*) (void))ecx_gettable_params }, \
+ { OSSL_FUNC_KEYMGMT_GETTABLE_PARAMS, (void (*) (void))alg##_gettable_params }, \
+ { OSSL_FUNC_KEYMGMT_SET_PARAMS, (void (*) (void))alg##_set_params }, \
+ { OSSL_FUNC_KEYMGMT_SETTABLE_PARAMS, (void (*) (void))alg##_settable_params }, \
{ OSSL_FUNC_KEYMGMT_HAS, (void (*)(void))ecx_has }, \
+ { OSSL_FUNC_KEYMGMT_MATCH, (void (*)(void))ecx_match }, \
+ { OSSL_FUNC_KEYMGMT_VALIDATE, (void (*)(void))alg##_validate }, \
{ OSSL_FUNC_KEYMGMT_IMPORT, (void (*)(void))ecx_import }, \
{ OSSL_FUNC_KEYMGMT_IMPORT_TYPES, (void (*)(void))ecx_imexport_types }, \
{ OSSL_FUNC_KEYMGMT_EXPORT, (void (*)(void))ecx_export }, \
{ OSSL_FUNC_KEYMGMT_EXPORT_TYPES, (void (*)(void))ecx_imexport_types }, \
- { 0, NULL } \
+ { OSSL_FUNC_KEYMGMT_GEN_INIT, (void (*)(void))alg##_gen_init }, \
+ { OSSL_FUNC_KEYMGMT_GEN_SET_PARAMS, (void (*)(void))ecx_gen_set_params }, \
+ { OSSL_FUNC_KEYMGMT_GEN_SETTABLE_PARAMS, \
+ (void (*)(void))ecx_gen_settable_params }, \
+ { OSSL_FUNC_KEYMGMT_GEN, (void (*)(void))alg##_gen }, \
+ { OSSL_FUNC_KEYMGMT_GEN_CLEANUP, (void (*)(void))ecx_gen_cleanup }, \
+ { OSSL_FUNC_KEYMGMT_LOAD, (void (*)(void))ecx_load }, \
+ { OSSL_FUNC_KEYMGMT_DUP, (void (*)(void))ecx_dup }, \
+ OSSL_DISPATCH_END \
};
MAKE_KEYMGMT_FUNCTIONS(x25519)
MAKE_KEYMGMT_FUNCTIONS(x448)
MAKE_KEYMGMT_FUNCTIONS(ed25519)
MAKE_KEYMGMT_FUNCTIONS(ed448)
+
+#ifdef S390X_EC_ASM
+# include "s390x_arch.h"
+
+static void *s390x_ecx_keygen25519(struct ecx_gen_ctx *gctx)
+{
+ static const unsigned char generator[] = {
+ 0x09, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+ };
+ ECX_KEY *key = ossl_ecx_key_new(gctx->libctx, ECX_KEY_TYPE_X25519, 1,
+ gctx->propq);
+ unsigned char *privkey = NULL, *pubkey;
+
+ if (key == NULL) {
+ ERR_raise(ERR_LIB_PROV, ERR_R_EC_LIB);
+ goto err;
+ }
+
+ /* If we're doing parameter generation then we just return a blank key */
+ if ((gctx->selection & OSSL_KEYMGMT_SELECT_KEYPAIR) == 0)
+ return key;
+
+ pubkey = key->pubkey;
+
+ privkey = ossl_ecx_key_allocate_privkey(key);
+ if (privkey == NULL) {
+ ERR_raise(ERR_LIB_PROV, ERR_R_EC_LIB);
+ goto err;
+ }
+
+#ifndef FIPS_MODULE
+ if (gctx->dhkem_ikm != NULL && gctx->dhkem_ikmlen != 0) {
+ if (gctx->type != ECX_KEY_TYPE_X25519)
+ goto err;
+ if (!ossl_ecx_dhkem_derive_private(key, privkey,
+ gctx->dhkem_ikm, gctx->dhkem_ikmlen))
+ goto err;
+ } else
+#endif
+ {
+ if (RAND_priv_bytes_ex(gctx->libctx, privkey, X25519_KEYLEN, 0) <= 0)
+ goto err;
+ }
+
+ privkey[0] &= 248;
+ privkey[31] &= 127;
+ privkey[31] |= 64;
+
+ if (s390x_x25519_mul(pubkey, generator, privkey) != 1)
+ goto err;
+ key->haspubkey = 1;
+ return key;
+ err:
+ ossl_ecx_key_free(key);
+ return NULL;
+}
+
+static void *s390x_ecx_keygen448(struct ecx_gen_ctx *gctx)
+{
+ static const unsigned char generator[] = {
+ 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+ };
+ ECX_KEY *key = ossl_ecx_key_new(gctx->libctx, ECX_KEY_TYPE_X448, 1,
+ gctx->propq);
+ unsigned char *privkey = NULL, *pubkey;
+
+ if (key == NULL) {
+ ERR_raise(ERR_LIB_PROV, ERR_R_EC_LIB);
+ goto err;
+ }
+
+ /* If we're doing parameter generation then we just return a blank key */
+ if ((gctx->selection & OSSL_KEYMGMT_SELECT_KEYPAIR) == 0)
+ return key;
+
+ pubkey = key->pubkey;
+
+ privkey = ossl_ecx_key_allocate_privkey(key);
+ if (privkey == NULL) {
+ ERR_raise(ERR_LIB_PROV, ERR_R_EC_LIB);
+ goto err;
+ }
+
+#ifndef FIPS_MODULE
+ if (gctx->dhkem_ikm != NULL && gctx->dhkem_ikmlen != 0) {
+ if (gctx->type != ECX_KEY_TYPE_X448)
+ goto err;
+ if (!ossl_ecx_dhkem_derive_private(key, privkey,
+ gctx->dhkem_ikm, gctx->dhkem_ikmlen))
+ goto err;
+ } else
+#endif
+ {
+ if (RAND_priv_bytes_ex(gctx->libctx, privkey, X448_KEYLEN, 0) <= 0)
+ goto err;
+ }
+
+ privkey[0] &= 252;
+ privkey[55] |= 128;
+
+ if (s390x_x448_mul(pubkey, generator, privkey) != 1)
+ goto err;
+ key->haspubkey = 1;
+ return key;
+ err:
+ ossl_ecx_key_free(key);
+ return NULL;
+}
+
+static void *s390x_ecd_keygen25519(struct ecx_gen_ctx *gctx)
+{
+ static const unsigned char generator_x[] = {
+ 0x1a, 0xd5, 0x25, 0x8f, 0x60, 0x2d, 0x56, 0xc9, 0xb2, 0xa7, 0x25, 0x95,
+ 0x60, 0xc7, 0x2c, 0x69, 0x5c, 0xdc, 0xd6, 0xfd, 0x31, 0xe2, 0xa4, 0xc0,
+ 0xfe, 0x53, 0x6e, 0xcd, 0xd3, 0x36, 0x69, 0x21
+ };
+ static const unsigned char generator_y[] = {
+ 0x58, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66,
+ 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66,
+ 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66,
+ };
+ unsigned char x_dst[32], buff[SHA512_DIGEST_LENGTH];
+ ECX_KEY *key = ossl_ecx_key_new(gctx->libctx, ECX_KEY_TYPE_ED25519, 1,
+ gctx->propq);
+ unsigned char *privkey = NULL, *pubkey;
+ unsigned int sz;
+ EVP_MD *sha = NULL;
+ int j;
+
+ if (key == NULL) {
+ ERR_raise(ERR_LIB_PROV, ERR_R_EC_LIB);
+ goto err;
+ }
+
+ /* If we're doing parameter generation then we just return a blank key */
+ if ((gctx->selection & OSSL_KEYMGMT_SELECT_KEYPAIR) == 0)
+ return key;
+
+ pubkey = key->pubkey;
+
+ privkey = ossl_ecx_key_allocate_privkey(key);
+ if (privkey == NULL) {
+ ERR_raise(ERR_LIB_PROV, ERR_R_EC_LIB);
+ goto err;
+ }
+
+ if (RAND_priv_bytes_ex(gctx->libctx, privkey, ED25519_KEYLEN, 0) <= 0)
+ goto err;
+
+ sha = EVP_MD_fetch(gctx->libctx, "SHA512", gctx->propq);
+ if (sha == NULL)
+ goto err;
+ j = EVP_Digest(privkey, 32, buff, &sz, sha, NULL);
+ EVP_MD_free(sha);
+ if (!j)
+ goto err;
+
+ buff[0] &= 248;
+ buff[31] &= 63;
+ buff[31] |= 64;
+
+ if (s390x_ed25519_mul(x_dst, pubkey,
+ generator_x, generator_y, buff) != 1)
+ goto err;
+
+ pubkey[31] |= ((x_dst[0] & 0x01) << 7);
+ key->haspubkey = 1;
+ return key;
+ err:
+ ossl_ecx_key_free(key);
+ return NULL;
+}
+
+static void *s390x_ecd_keygen448(struct ecx_gen_ctx *gctx)
+{
+ static const unsigned char generator_x[] = {
+ 0x5e, 0xc0, 0x0c, 0xc7, 0x2b, 0xa8, 0x26, 0x26, 0x8e, 0x93, 0x00, 0x8b,
+ 0xe1, 0x80, 0x3b, 0x43, 0x11, 0x65, 0xb6, 0x2a, 0xf7, 0x1a, 0xae, 0x12,
+ 0x64, 0xa4, 0xd3, 0xa3, 0x24, 0xe3, 0x6d, 0xea, 0x67, 0x17, 0x0f, 0x47,
+ 0x70, 0x65, 0x14, 0x9e, 0xda, 0x36, 0xbf, 0x22, 0xa6, 0x15, 0x1d, 0x22,
+ 0xed, 0x0d, 0xed, 0x6b, 0xc6, 0x70, 0x19, 0x4f, 0x00
+ };
+ static const unsigned char generator_y[] = {
+ 0x14, 0xfa, 0x30, 0xf2, 0x5b, 0x79, 0x08, 0x98, 0xad, 0xc8, 0xd7, 0x4e,
+ 0x2c, 0x13, 0xbd, 0xfd, 0xc4, 0x39, 0x7c, 0xe6, 0x1c, 0xff, 0xd3, 0x3a,
+ 0xd7, 0xc2, 0xa0, 0x05, 0x1e, 0x9c, 0x78, 0x87, 0x40, 0x98, 0xa3, 0x6c,
+ 0x73, 0x73, 0xea, 0x4b, 0x62, 0xc7, 0xc9, 0x56, 0x37, 0x20, 0x76, 0x88,
+ 0x24, 0xbc, 0xb6, 0x6e, 0x71, 0x46, 0x3f, 0x69, 0x00
+ };
+ unsigned char x_dst[57], buff[114];
+ ECX_KEY *key = ossl_ecx_key_new(gctx->libctx, ECX_KEY_TYPE_ED448, 1,
+ gctx->propq);
+ unsigned char *privkey = NULL, *pubkey;
+ EVP_MD_CTX *hashctx = NULL;
+ EVP_MD *shake = NULL;
+
+ if (key == NULL) {
+ ERR_raise(ERR_LIB_PROV, ERR_R_EC_LIB);
+ goto err;
+ }
+
+ /* If we're doing parameter generation then we just return a blank key */
+ if ((gctx->selection & OSSL_KEYMGMT_SELECT_KEYPAIR) == 0)
+ return key;
+
+ pubkey = key->pubkey;
+
+ privkey = ossl_ecx_key_allocate_privkey(key);
+ if (privkey == NULL) {
+ ERR_raise(ERR_LIB_PROV, ERR_R_EC_LIB);
+ goto err;
+ }
+
+ shake = EVP_MD_fetch(gctx->libctx, "SHAKE256", gctx->propq);
+ if (shake == NULL)
+ goto err;
+ if (RAND_priv_bytes_ex(gctx->libctx, privkey, ED448_KEYLEN, 0) <= 0)
+ goto err;
+
+ hashctx = EVP_MD_CTX_new();
+ if (hashctx == NULL)
+ goto err;
+ if (EVP_DigestInit_ex(hashctx, shake, NULL) != 1)
+ goto err;
+ if (EVP_DigestUpdate(hashctx, privkey, 57) != 1)
+ goto err;
+ if (EVP_DigestFinalXOF(hashctx, buff, sizeof(buff)) != 1)
+ goto err;
+
+ buff[0] &= -4;
+ buff[55] |= 0x80;
+ buff[56] = 0;
+
+ if (s390x_ed448_mul(x_dst, pubkey,
+ generator_x, generator_y, buff) != 1)
+ goto err;
+
+ pubkey[56] |= ((x_dst[0] & 0x01) << 7);
+ EVP_MD_CTX_free(hashctx);
+ EVP_MD_free(shake);
+ key->haspubkey = 1;
+ return key;
+ err:
+ ossl_ecx_key_free(key);
+ EVP_MD_CTX_free(hashctx);
+ EVP_MD_free(shake);
+ return NULL;
+}
+#endif
projects / openssl.git / blobdiff