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CloverBootloader/Library/OpensslLib/openssl/providers/implementations/keymgmt/mac_legacy_kmgmt.c

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/*
* 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
*/
/* We need to use some engine deprecated APIs */
#define OPENSSL_SUPPRESS_DEPRECATED
#include <string.h>
#include <openssl/core_dispatch.h>
#include <openssl/core_names.h>
#include <openssl/params.h>
#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/proverr.h>
#include <openssl/param_build.h>
#ifndef FIPS_MODULE
# include <openssl/engine.h>
#endif
#include "internal/param_build_set.h"
#include "prov/implementations.h"
#include "prov/providercommon.h"
#include "prov/provider_ctx.h"
#include "prov/macsignature.h"
static OSSL_FUNC_keymgmt_new_fn mac_new;
static OSSL_FUNC_keymgmt_free_fn mac_free;
static OSSL_FUNC_keymgmt_gen_init_fn mac_gen_init;
static OSSL_FUNC_keymgmt_gen_fn mac_gen;
static OSSL_FUNC_keymgmt_gen_cleanup_fn mac_gen_cleanup;
static OSSL_FUNC_keymgmt_gen_set_params_fn mac_gen_set_params;
static OSSL_FUNC_keymgmt_gen_settable_params_fn mac_gen_settable_params;
static OSSL_FUNC_keymgmt_get_params_fn mac_get_params;
static OSSL_FUNC_keymgmt_gettable_params_fn mac_gettable_params;
static OSSL_FUNC_keymgmt_set_params_fn mac_set_params;
static OSSL_FUNC_keymgmt_settable_params_fn mac_settable_params;
static OSSL_FUNC_keymgmt_has_fn mac_has;
static OSSL_FUNC_keymgmt_match_fn mac_match;
static OSSL_FUNC_keymgmt_import_fn mac_import;
static OSSL_FUNC_keymgmt_import_types_fn mac_imexport_types;
static OSSL_FUNC_keymgmt_export_fn mac_export;
static OSSL_FUNC_keymgmt_export_types_fn mac_imexport_types;
static OSSL_FUNC_keymgmt_new_fn mac_new_cmac;
static OSSL_FUNC_keymgmt_gettable_params_fn cmac_gettable_params;
static OSSL_FUNC_keymgmt_import_types_fn cmac_imexport_types;
static OSSL_FUNC_keymgmt_export_types_fn cmac_imexport_types;
static OSSL_FUNC_keymgmt_gen_init_fn cmac_gen_init;
static OSSL_FUNC_keymgmt_gen_set_params_fn cmac_gen_set_params;
static OSSL_FUNC_keymgmt_gen_settable_params_fn cmac_gen_settable_params;
struct mac_gen_ctx {
OSSL_LIB_CTX *libctx;
int selection;
unsigned char *priv_key;
size_t priv_key_len;
PROV_CIPHER cipher;
};
MAC_KEY *ossl_mac_key_new(OSSL_LIB_CTX *libctx, int cmac)
{
MAC_KEY *mackey;
if (!ossl_prov_is_running())
return NULL;
mackey = OPENSSL_zalloc(sizeof(*mackey));
if (mackey == NULL)
return NULL;
mackey->lock = CRYPTO_THREAD_lock_new();
if (mackey->lock == NULL) {
OPENSSL_free(mackey);
return NULL;
}
mackey->libctx = libctx;
mackey->refcnt = 1;
mackey->cmac = cmac;
return mackey;
}
void ossl_mac_key_free(MAC_KEY *mackey)
{
int ref = 0;
if (mackey == NULL)
return;
CRYPTO_DOWN_REF(&mackey->refcnt, &ref, mackey->lock);
if (ref > 0)
return;
OPENSSL_secure_clear_free(mackey->priv_key, mackey->priv_key_len);
OPENSSL_free(mackey->properties);
ossl_prov_cipher_reset(&mackey->cipher);
CRYPTO_THREAD_lock_free(mackey->lock);
OPENSSL_free(mackey);
}
int ossl_mac_key_up_ref(MAC_KEY *mackey)
{
int ref = 0;
/* This is effectively doing a new operation on the MAC_KEY and should be
* adequately guarded again modules' error states. However, both current
* calls here are guarded propery in signature/mac_legacy.c. Thus, it
* could be removed here. The concern is that something in the future
* might call this function without adequate guards. It's a cheap call,
* it seems best to leave it even though it is currently redundant.
*/
if (!ossl_prov_is_running())
return 0;
CRYPTO_UP_REF(&mackey->refcnt, &ref, mackey->lock);
return 1;
}
static void *mac_new(void *provctx)
{
return ossl_mac_key_new(PROV_LIBCTX_OF(provctx), 0);
}
static void *mac_new_cmac(void *provctx)
{
return ossl_mac_key_new(PROV_LIBCTX_OF(provctx), 1);
}
static void mac_free(void *mackey)
{
ossl_mac_key_free(mackey);
}
static int mac_has(const void *keydata, int selection)
{
const MAC_KEY *key = keydata;
int ok = 0;
if (ossl_prov_is_running() && key != NULL) {
/*
* MAC keys always have all the parameters they need (i.e. none).
* Therefore we always return with 1, if asked about parameters.
* Similarly for public keys.
*/
ok = 1;
if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0)
ok = key->priv_key != NULL;
}
return ok;
}
static int mac_match(const void *keydata1, const void *keydata2, int selection)
{
const MAC_KEY *key1 = keydata1;
const MAC_KEY *key2 = keydata2;
int ok = 1;
if (!ossl_prov_is_running())
return 0;
if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0) {
if ((key1->priv_key == NULL && key2->priv_key != NULL)
|| (key1->priv_key != NULL && key2->priv_key == NULL)
|| key1->priv_key_len != key2->priv_key_len
|| (key1->cipher.cipher == NULL && key2->cipher.cipher != NULL)
|| (key1->cipher.cipher != NULL && key2->cipher.cipher == NULL))
ok = 0;
else
ok = ok && (key1->priv_key == NULL /* implies key2->privkey == NULL */
|| CRYPTO_memcmp(key1->priv_key, key2->priv_key,
key1->priv_key_len) == 0);
if (key1->cipher.cipher != NULL)
ok = ok && EVP_CIPHER_is_a(key1->cipher.cipher,
EVP_CIPHER_get0_name(key2->cipher.cipher));
}
return ok;
}
static int mac_key_fromdata(MAC_KEY *key, const OSSL_PARAM params[])
{
const OSSL_PARAM *p;
p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_PRIV_KEY);
if (p != NULL) {
if (p->data_type != OSSL_PARAM_OCTET_STRING) {
ERR_raise(ERR_LIB_PROV, ERR_R_PASSED_INVALID_ARGUMENT);
return 0;
}
OPENSSL_secure_clear_free(key->priv_key, key->priv_key_len);
/* allocate at least one byte to distinguish empty key from no key set */
key->priv_key = OPENSSL_secure_malloc(p->data_size > 0 ? p->data_size : 1);
if (key->priv_key == NULL) {
ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
return 0;
}
memcpy(key->priv_key, p->data, p->data_size);
key->priv_key_len = p->data_size;
}
p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_PROPERTIES);
if (p != NULL) {
if (p->data_type != OSSL_PARAM_UTF8_STRING) {
ERR_raise(ERR_LIB_PROV, ERR_R_PASSED_INVALID_ARGUMENT);
return 0;
}
OPENSSL_free(key->properties);
key->properties = OPENSSL_strdup(p->data);
if (key->properties == NULL) {
ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
return 0;
}
}
if (key->cmac && !ossl_prov_cipher_load_from_params(&key->cipher, params,
key->libctx)) {
ERR_raise(ERR_LIB_PROV, ERR_R_PASSED_INVALID_ARGUMENT);
return 0;
}
if (key->priv_key != NULL)
return 1;
return 0;
}
static int mac_import(void *keydata, int selection, const OSSL_PARAM params[])
{
MAC_KEY *key = keydata;
if (!ossl_prov_is_running() || key == NULL)
return 0;
if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) == 0)
return 0;
return mac_key_fromdata(key, params);
}
static int key_to_params(MAC_KEY *key, OSSL_PARAM_BLD *tmpl,
OSSL_PARAM params[])
{
if (key == NULL)
return 0;
if (key->priv_key != NULL
&& !ossl_param_build_set_octet_string(tmpl, params,
OSSL_PKEY_PARAM_PRIV_KEY,
key->priv_key, key->priv_key_len))
return 0;
if (key->cipher.cipher != NULL
&& !ossl_param_build_set_utf8_string(tmpl, params,
OSSL_PKEY_PARAM_CIPHER,
EVP_CIPHER_get0_name(key->cipher.cipher)))
return 0;
#if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
if (key->cipher.engine != NULL
&& !ossl_param_build_set_utf8_string(tmpl, params,
OSSL_PKEY_PARAM_ENGINE,
ENGINE_get_id(key->cipher.engine)))
return 0;
#endif
return 1;
}
static int mac_export(void *keydata, int selection, OSSL_CALLBACK *param_cb,
void *cbarg)
{
MAC_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_PRIVATE_KEY) != 0
&& !key_to_params(key, tmpl, NULL))
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;
}
static const OSSL_PARAM mac_key_types[] = {
OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_PRIV_KEY, NULL, 0),
OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_PROPERTIES, NULL, 0),
OSSL_PARAM_END
};
static const OSSL_PARAM *mac_imexport_types(int selection)
{
if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0)
return mac_key_types;
return NULL;
}
static const OSSL_PARAM cmac_key_types[] = {
OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_PRIV_KEY, NULL, 0),
OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_CIPHER, NULL, 0),
OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_ENGINE, NULL, 0),
OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_PROPERTIES, NULL, 0),
OSSL_PARAM_END
};
static const OSSL_PARAM *cmac_imexport_types(int selection)
{
if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0)
return cmac_key_types;
return NULL;
}
static int mac_get_params(void *key, OSSL_PARAM params[])
{
return key_to_params(key, NULL, params);
}
static const OSSL_PARAM *mac_gettable_params(void *provctx)
{
static const OSSL_PARAM gettable_params[] = {
OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_PRIV_KEY, NULL, 0),
OSSL_PARAM_END
};
return gettable_params;
}
static const OSSL_PARAM *cmac_gettable_params(void *provctx)
{
static const OSSL_PARAM gettable_params[] = {
OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_PRIV_KEY, NULL, 0),
OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_CIPHER, NULL, 0),
OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_ENGINE, NULL, 0),
OSSL_PARAM_END
};
return gettable_params;
}
static int mac_set_params(void *keydata, const OSSL_PARAM params[])
{
MAC_KEY *key = keydata;
const OSSL_PARAM *p;
if (key == NULL)
return 0;
p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_PRIV_KEY);
if (p != NULL)
return mac_key_fromdata(key, params);
return 1;
}
static const OSSL_PARAM *mac_settable_params(void *provctx)
{
static const OSSL_PARAM settable_params[] = {
OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_PRIV_KEY, NULL, 0),
OSSL_PARAM_END
};
return settable_params;
}
static void *mac_gen_init_common(void *provctx, int selection)
{
OSSL_LIB_CTX *libctx = PROV_LIBCTX_OF(provctx);
struct mac_gen_ctx *gctx = NULL;
if (!ossl_prov_is_running())
return NULL;
if ((gctx = OPENSSL_zalloc(sizeof(*gctx))) != NULL) {
gctx->libctx = libctx;
gctx->selection = selection;
}
return gctx;
}
static void *mac_gen_init(void *provctx, int selection,
const OSSL_PARAM params[])
{
struct mac_gen_ctx *gctx = mac_gen_init_common(provctx, selection);
if (gctx != NULL && !mac_gen_set_params(gctx, params)) {
OPENSSL_free(gctx);
gctx = NULL;
}
return gctx;
}
static void *cmac_gen_init(void *provctx, int selection,
const OSSL_PARAM params[])
{
struct mac_gen_ctx *gctx = mac_gen_init_common(provctx, selection);
if (gctx != NULL && !cmac_gen_set_params(gctx, params)) {
OPENSSL_free(gctx);
gctx = NULL;
}
return gctx;
}
static int mac_gen_set_params(void *genctx, const OSSL_PARAM params[])
{
struct mac_gen_ctx *gctx = genctx;
const OSSL_PARAM *p;
if (gctx == NULL)
return 0;
p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_PRIV_KEY);
if (p != NULL) {
if (p->data_type != OSSL_PARAM_OCTET_STRING) {
ERR_raise(ERR_LIB_PROV, ERR_R_PASSED_INVALID_ARGUMENT);
return 0;
}
gctx->priv_key = OPENSSL_secure_malloc(p->data_size);
if (gctx->priv_key == NULL) {
ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
return 0;
}
memcpy(gctx->priv_key, p->data, p->data_size);
gctx->priv_key_len = p->data_size;
}
return 1;
}
static int cmac_gen_set_params(void *genctx, const OSSL_PARAM params[])
{
struct mac_gen_ctx *gctx = genctx;
if (!mac_gen_set_params(genctx, params))
return 0;
if (!ossl_prov_cipher_load_from_params(&gctx->cipher, params,
gctx->libctx)) {
ERR_raise(ERR_LIB_PROV, ERR_R_PASSED_INVALID_ARGUMENT);
return 0;
}
return 1;
}
static const OSSL_PARAM *mac_gen_settable_params(ossl_unused void *genctx,
ossl_unused void *provctx)
{
static OSSL_PARAM settable[] = {
OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_PRIV_KEY, NULL, 0),
OSSL_PARAM_END
};
return settable;
}
static const OSSL_PARAM *cmac_gen_settable_params(ossl_unused void *genctx,
ossl_unused void *provctx)
{
static OSSL_PARAM settable[] = {
OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_PRIV_KEY, NULL, 0),
OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_CIPHER, NULL, 0),
OSSL_PARAM_END
};
return settable;
}
static void *mac_gen(void *genctx, OSSL_CALLBACK *cb, void *cbarg)
{
struct mac_gen_ctx *gctx = genctx;
MAC_KEY *key;
if (!ossl_prov_is_running() || gctx == NULL)
return NULL;
if ((key = ossl_mac_key_new(gctx->libctx, 0)) == 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 (gctx->priv_key == NULL) {
ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_KEY);
ossl_mac_key_free(key);
return NULL;
}
/*
* This is horrible but required for backwards compatibility. We don't
* actually do real key generation at all. We simply copy the key that was
* previously set in the gctx. Hopefully at some point in the future all
* of this can be removed and we will only support the EVP_KDF APIs.
*/
if (!ossl_prov_cipher_copy(&key->cipher, &gctx->cipher)) {
ossl_mac_key_free(key);
ERR_raise(ERR_LIB_PROV, ERR_R_INTERNAL_ERROR);
return NULL;
}
ossl_prov_cipher_reset(&gctx->cipher);
key->priv_key = gctx->priv_key;
key->priv_key_len = gctx->priv_key_len;
gctx->priv_key_len = 0;
gctx->priv_key = NULL;
return key;
}
static void mac_gen_cleanup(void *genctx)
{
struct mac_gen_ctx *gctx = genctx;
OPENSSL_secure_clear_free(gctx->priv_key, gctx->priv_key_len);
ossl_prov_cipher_reset(&gctx->cipher);
OPENSSL_free(gctx);
}
const OSSL_DISPATCH ossl_mac_legacy_keymgmt_functions[] = {
{ OSSL_FUNC_KEYMGMT_NEW, (void (*)(void))mac_new },
{ OSSL_FUNC_KEYMGMT_FREE, (void (*)(void))mac_free },
{ OSSL_FUNC_KEYMGMT_GET_PARAMS, (void (*) (void))mac_get_params },
{ OSSL_FUNC_KEYMGMT_GETTABLE_PARAMS, (void (*) (void))mac_gettable_params },
{ OSSL_FUNC_KEYMGMT_SET_PARAMS, (void (*) (void))mac_set_params },
{ OSSL_FUNC_KEYMGMT_SETTABLE_PARAMS, (void (*) (void))mac_settable_params },
{ OSSL_FUNC_KEYMGMT_HAS, (void (*)(void))mac_has },
{ OSSL_FUNC_KEYMGMT_MATCH, (void (*)(void))mac_match },
{ OSSL_FUNC_KEYMGMT_IMPORT, (void (*)(void))mac_import },
{ OSSL_FUNC_KEYMGMT_IMPORT_TYPES, (void (*)(void))mac_imexport_types },
{ OSSL_FUNC_KEYMGMT_EXPORT, (void (*)(void))mac_export },
{ OSSL_FUNC_KEYMGMT_EXPORT_TYPES, (void (*)(void))mac_imexport_types },
{ OSSL_FUNC_KEYMGMT_GEN_INIT, (void (*)(void))mac_gen_init },
{ OSSL_FUNC_KEYMGMT_GEN_SET_PARAMS, (void (*)(void))mac_gen_set_params },
{ OSSL_FUNC_KEYMGMT_GEN_SETTABLE_PARAMS,
(void (*)(void))mac_gen_settable_params },
{ OSSL_FUNC_KEYMGMT_GEN, (void (*)(void))mac_gen },
{ OSSL_FUNC_KEYMGMT_GEN_CLEANUP, (void (*)(void))mac_gen_cleanup },
{ 0, NULL }
};
const OSSL_DISPATCH ossl_cmac_legacy_keymgmt_functions[] = {
{ OSSL_FUNC_KEYMGMT_NEW, (void (*)(void))mac_new_cmac },
{ OSSL_FUNC_KEYMGMT_FREE, (void (*)(void))mac_free },
{ OSSL_FUNC_KEYMGMT_GET_PARAMS, (void (*) (void))mac_get_params },
{ OSSL_FUNC_KEYMGMT_GETTABLE_PARAMS, (void (*) (void))cmac_gettable_params },
{ OSSL_FUNC_KEYMGMT_SET_PARAMS, (void (*) (void))mac_set_params },
{ OSSL_FUNC_KEYMGMT_SETTABLE_PARAMS, (void (*) (void))mac_settable_params },
{ OSSL_FUNC_KEYMGMT_HAS, (void (*)(void))mac_has },
{ OSSL_FUNC_KEYMGMT_MATCH, (void (*)(void))mac_match },
{ OSSL_FUNC_KEYMGMT_IMPORT, (void (*)(void))mac_import },
{ OSSL_FUNC_KEYMGMT_IMPORT_TYPES, (void (*)(void))cmac_imexport_types },
{ OSSL_FUNC_KEYMGMT_EXPORT, (void (*)(void))mac_export },
{ OSSL_FUNC_KEYMGMT_EXPORT_TYPES, (void (*)(void))cmac_imexport_types },
{ OSSL_FUNC_KEYMGMT_GEN_INIT, (void (*)(void))cmac_gen_init },
{ OSSL_FUNC_KEYMGMT_GEN_SET_PARAMS, (void (*)(void))cmac_gen_set_params },
{ OSSL_FUNC_KEYMGMT_GEN_SETTABLE_PARAMS,
(void (*)(void))cmac_gen_settable_params },
{ OSSL_FUNC_KEYMGMT_GEN, (void (*)(void))mac_gen },
{ OSSL_FUNC_KEYMGMT_GEN_CLEANUP, (void (*)(void))mac_gen_cleanup },
{ 0, NULL }
};
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