| /* |
| * Copyright 2020-2022 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 <assert.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 "internal/param_build_set.h" |
| #include <openssl/param_build.h> |
| #include "crypto/ecx.h" |
| #include "prov/implementations.h" |
| #include "prov/providercommon.h" |
| #include "prov/provider_ctx.h" |
| #ifdef S390X_EC_ASM |
| # include "s390x_arch.h" |
| # include <openssl/sha.h> /* For SHA512_DIGEST_LENGTH */ |
| #endif |
| |
| 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; |
| }; |
| |
| #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) |
| { |
| 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) |
| { |
| 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) |
| { |
| 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) |
| { |
| 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(const void *keydata, int selection) |
| { |
| const ECX_KEY *key = keydata; |
| int ok = 0; |
| |
| 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; |
| |
| if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0) |
| ok = ok && key->privkey != NULL; |
| } |
| 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; |
| |
| if (!ossl_prov_is_running() || key == NULL) |
| return 0; |
| |
| if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) == 0) |
| return 0; |
| |
| 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[], int include_private) |
| { |
| if (key == NULL) |
| return 0; |
| |
| if (!ossl_param_build_set_octet_string(tmpl, params, |
| OSSL_PKEY_PARAM_PUB_KEY, |
| key->pubkey, key->keylen)) |
| return 0; |
| |
| if (include_private |
| && key->privkey != NULL |
| && !ossl_param_build_set_octet_string(tmpl, params, |
| OSSL_PKEY_PARAM_PRIV_KEY, |
| key->privkey, key->keylen)) |
| return 0; |
| |
| return 1; |
| } |
| |
| static int ecx_export(void *keydata, int selection, OSSL_CALLBACK *param_cb, |
| void *cbarg) |
| { |
| ECX_KEY *key = keydata; |
| OSSL_PARAM_BLD *tmpl; |
| OSSL_PARAM *params = NULL; |
| int ret = 0; |
| |
| if (!ossl_prov_is_running() || key == NULL) |
| return 0; |
| |
| tmpl = OSSL_PARAM_BLD_new(); |
| if (tmpl == NULL) |
| return 0; |
| |
| if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0) { |
| int include_private = ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0); |
| |
| 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_free(params); |
| err: |
| OSSL_PARAM_BLD_free(tmpl); |
| return ret; |
| } |
| |
| #define ECX_KEY_TYPES() \ |
| OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_PUB_KEY, NULL, 0), \ |
| OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_PRIV_KEY, NULL, 0) |
| |
| static const OSSL_PARAM ecx_key_types[] = { |
| ECX_KEY_TYPES(), |
| OSSL_PARAM_END |
| }; |
| static const OSSL_PARAM *ecx_imexport_types(int selection) |
| { |
| if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0) |
| return ecx_key_types; |
| return NULL; |
| } |
| |
| static int ecx_get_params(void *key, OSSL_PARAM params[], int bits, int secbits, |
| int size) |
| { |
| ECX_KEY *ecx = key; |
| OSSL_PARAM *p; |
| |
| if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_BITS)) != NULL |
| && !OSSL_PARAM_set_int(p, bits)) |
| return 0; |
| if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_SECURITY_BITS)) != NULL |
| && !OSSL_PARAM_set_int(p, secbits)) |
| return 0; |
| if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_MAX_SIZE)) != NULL |
| && !OSSL_PARAM_set_int(p, size)) |
| return 0; |
| 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[]) |
| { |
| return ecx_get_params(key, params, X25519_BITS, X25519_SECURITY_BITS, |
| X25519_KEYLEN); |
| } |
| |
| static int x448_get_params(void *key, OSSL_PARAM params[]) |
| { |
| return ecx_get_params(key, params, X448_BITS, X448_SECURITY_BITS, |
| X448_KEYLEN); |
| } |
| |
| static int ed25519_get_params(void *key, OSSL_PARAM params[]) |
| { |
| return ecx_get_params(key, params, ED25519_BITS, ED25519_SECURITY_BITS, |
| 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_SIGSIZE) |
| && ed_get_params(key, 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 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) { |
| ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE); |
| 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; |
| } |
| |
| 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_END |
| }; |
| return settable; |
| } |
| |
| 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_MALLOC_FAILURE); |
| 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_MALLOC_FAILURE); |
| goto err; |
| } |
| 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) |
| { |
| 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)) |
| return s390x_ecd_keygen25519(gctx); |
| #endif |
| return ecx_gen(gctx); |
| } |
| |
| static void *ed448_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_ED448) |
| && OPENSSL_s390xcap_P.kdsa[0] & S390X_CAPBIT(S390X_EDDSA_SIGN_ED448) |
| && OPENSSL_s390xcap_P.kdsa[0] & S390X_CAPBIT(S390X_EDDSA_VERIFY_ED448)) |
| return s390x_ecd_keygen448(gctx); |
| #endif |
| return ecx_gen(gctx); |
| } |
| |
| static void ecx_gen_cleanup(void *genctx) |
| { |
| struct ecx_gen_ctx *gctx = genctx; |
| |
| 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; |
| 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; |
| } |
| |
| 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) |
| 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_validate(keydata, selection, ECX_KEY_TYPE_ED448, ED448_KEYLEN); |
| } |
| |
| #define MAKE_KEYMGMT_FUNCTIONS(alg) \ |
| const OSSL_DISPATCH ossl_##alg##_keymgmt_functions[] = { \ |
| { OSSL_FUNC_KEYMGMT_NEW, (void (*)(void))alg##_new_key }, \ |
| { 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))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 }, \ |
| { 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 }, \ |
| { 0, NULL } \ |
| }; |
| |
| 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_MALLOC_FAILURE); |
| 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_MALLOC_FAILURE); |
| goto err; |
| } |
| |
| 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_MALLOC_FAILURE); |
| 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_MALLOC_FAILURE); |
| goto err; |
| } |
| |
| 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_MALLOC_FAILURE); |
| 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_MALLOC_FAILURE); |
| 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_MALLOC_FAILURE); |
| 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_MALLOC_FAILURE); |
| 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 |
