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2ef9a7ac5e
We reuse concepts such as PROV_CIPHER, and make use of some common code in provider_util.c Reviewed-by: Paul Dale <paul.dale@oracle.com> (Merged from https://github.com/openssl/openssl/pull/12637)
515 lines
16 KiB
C
515 lines
16 KiB
C
/*
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* Copyright 2020 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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/* We need to use some engine deprecated APIs */
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#define OPENSSL_SUPPRESS_DEPRECATED
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#include <string.h>
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#include <openssl/core_dispatch.h>
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#include <openssl/core_names.h>
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#include <openssl/params.h>
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#include <openssl/err.h>
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#include <openssl/evp.h>
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#include "openssl/param_build.h"
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#include "internal/param_build_set.h"
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#include "prov/implementations.h"
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#include "prov/providercommon.h"
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#include "prov/provider_ctx.h"
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#include "prov/macsignature.h"
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#include "e_os.h" /* strcasecmp */
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static OSSL_FUNC_keymgmt_new_fn mac_new;
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static OSSL_FUNC_keymgmt_free_fn mac_free;
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static OSSL_FUNC_keymgmt_gen_init_fn mac_gen_init;
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static OSSL_FUNC_keymgmt_gen_fn mac_gen;
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static OSSL_FUNC_keymgmt_gen_cleanup_fn mac_gen_cleanup;
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static OSSL_FUNC_keymgmt_get_params_fn mac_get_params;
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static OSSL_FUNC_keymgmt_gettable_params_fn mac_gettable_params;
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static OSSL_FUNC_keymgmt_set_params_fn mac_set_params;
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static OSSL_FUNC_keymgmt_settable_params_fn mac_settable_params;
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static OSSL_FUNC_keymgmt_has_fn mac_has;
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static OSSL_FUNC_keymgmt_match_fn mac_match;
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static OSSL_FUNC_keymgmt_import_fn mac_import;
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static OSSL_FUNC_keymgmt_import_types_fn mac_imexport_types;
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static OSSL_FUNC_keymgmt_export_fn mac_export;
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static OSSL_FUNC_keymgmt_export_types_fn mac_imexport_types;
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struct mac_gen_ctx {
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OPENSSL_CTX *libctx;
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int selection;
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unsigned char *priv_key;
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size_t priv_key_len;
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PROV_CIPHER cipher;
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};
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MAC_KEY *mac_key_new(OPENSSL_CTX *libctx, int cmac)
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{
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MAC_KEY *mackey = OPENSSL_zalloc(sizeof(*mackey));
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if (mackey == NULL)
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return NULL;
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mackey->lock = CRYPTO_THREAD_lock_new();
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if (mackey->lock == NULL) {
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OPENSSL_free(mackey);
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return NULL;
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}
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mackey->libctx = libctx;
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mackey->refcnt = 1;
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mackey->cmac = cmac;
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return mackey;
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}
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void mac_key_free(MAC_KEY *mackey)
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{
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int ref = 0;
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if (mackey == NULL)
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return;
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CRYPTO_DOWN_REF(&mackey->refcnt, &ref, mackey->lock);
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if (ref > 0)
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return;
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OPENSSL_secure_clear_free(mackey->priv_key, mackey->priv_key_len);
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OPENSSL_free(mackey->properties);
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ossl_prov_cipher_reset(&mackey->cipher);
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CRYPTO_THREAD_lock_free(mackey->lock);
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OPENSSL_free(mackey);
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}
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int mac_key_up_ref(MAC_KEY *mackey)
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{
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int ref = 0;
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CRYPTO_UP_REF(&mackey->refcnt, &ref, mackey->lock);
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return 1;
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}
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static void *mac_new(void *provctx)
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{
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return mac_key_new(PROV_LIBRARY_CONTEXT_OF(provctx), 0);
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}
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static void *mac_new_cmac(void *provctx)
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{
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return mac_key_new(PROV_LIBRARY_CONTEXT_OF(provctx), 1);
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}
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static void mac_free(void *mackey)
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{
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mac_key_free(mackey);
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}
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static int mac_has(void *keydata, int selection)
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{
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MAC_KEY *key = keydata;
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int ok = 0;
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if (key != NULL) {
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/*
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* MAC keys always have all the parameters they need (i.e. none).
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* Therefore we always return with 1, if asked about parameters.
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* Similarly for public keys.
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*/
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ok = 1;
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if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0)
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ok = key->priv_key != NULL;
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}
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return ok;
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}
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static int mac_match(const void *keydata1, const void *keydata2, int selection)
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{
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const MAC_KEY *key1 = keydata1;
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const MAC_KEY *key2 = keydata2;
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int ok = 1;
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if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0) {
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if ((key1->priv_key == NULL && key2->priv_key != NULL)
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|| (key1->priv_key != NULL && key2->priv_key == NULL)
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|| key1->priv_key_len != key2->priv_key_len
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|| (key1->cipher.cipher == NULL && key2->cipher.cipher != NULL)
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|| (key1->cipher.cipher != NULL && key2->cipher.cipher == NULL))
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ok = 0;
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else
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ok = ok && (key1->priv_key == NULL /* implies key2->privkey == NULL */
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|| CRYPTO_memcmp(key1->priv_key, key2->priv_key,
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key1->priv_key_len) == 0);
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if (key1->cipher.cipher != NULL)
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ok = ok && EVP_CIPHER_is_a(key1->cipher.cipher,
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EVP_CIPHER_name(key2->cipher.cipher));
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}
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return ok;
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}
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static int mac_key_fromdata(MAC_KEY *key, const OSSL_PARAM params[])
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{
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const OSSL_PARAM *p;
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p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_PRIV_KEY);
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if (p != NULL) {
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if (p->data_type != OSSL_PARAM_OCTET_STRING) {
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ERR_raise(ERR_LIB_PROV, ERR_R_PASSED_INVALID_ARGUMENT);
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return 0;
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}
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OPENSSL_secure_clear_free(key->priv_key, key->priv_key_len);
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key->priv_key = OPENSSL_secure_malloc(p->data_size);
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if (key->priv_key == NULL) {
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ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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memcpy(key->priv_key, p->data, p->data_size);
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key->priv_key_len = p->data_size;
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}
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p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_PROPERTIES);
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if (p != NULL) {
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if (p->data_type != OSSL_PARAM_UTF8_STRING) {
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ERR_raise(ERR_LIB_PROV, ERR_R_PASSED_INVALID_ARGUMENT);
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return 0;
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}
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OPENSSL_free(key->properties);
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key->properties = OPENSSL_strdup(p->data);
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if (key->properties == NULL) {
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ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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}
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if (key->cmac && !ossl_prov_cipher_load_from_params(&key->cipher, params,
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key->libctx)) {
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ERR_raise(ERR_LIB_PROV, ERR_R_PASSED_INVALID_ARGUMENT);
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return 0;
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}
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if (key->priv_key != NULL)
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return 1;
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return 0;
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}
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static int mac_import(void *keydata, int selection, const OSSL_PARAM params[])
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{
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MAC_KEY *key = keydata;
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if (key == NULL)
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return 0;
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if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) == 0)
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return 0;
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return mac_key_fromdata(key, params);
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}
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static int key_to_params(MAC_KEY *key, OSSL_PARAM_BLD *tmpl,
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OSSL_PARAM params[])
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{
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if (key == NULL)
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return 0;
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if (key->priv_key != NULL
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&& !ossl_param_build_set_octet_string(tmpl, params,
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OSSL_PKEY_PARAM_PRIV_KEY,
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key->priv_key, key->priv_key_len))
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return 0;
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if (key->cipher.cipher != NULL
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&& !ossl_param_build_set_utf8_string(tmpl, params,
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OSSL_PKEY_PARAM_CIPHER,
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EVP_CIPHER_name(key->cipher.cipher)))
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return 0;
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#if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
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if (key->cipher.engine != NULL
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&& !ossl_param_build_set_utf8_string(tmpl, params,
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OSSL_PKEY_PARAM_ENGINE,
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ENGINE_get_id(key->cipher.engine)))
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return 0;
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#endif
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return 1;
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}
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static int mac_export(void *keydata, int selection, OSSL_CALLBACK *param_cb,
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void *cbarg)
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{
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MAC_KEY *key = keydata;
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OSSL_PARAM_BLD *tmpl;
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OSSL_PARAM *params = NULL;
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int ret = 0;
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if (key == NULL)
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return 0;
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tmpl = OSSL_PARAM_BLD_new();
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if (tmpl == NULL)
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return 0;
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if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0
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&& !key_to_params(key, tmpl, NULL))
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goto err;
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params = OSSL_PARAM_BLD_to_param(tmpl);
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if (params == NULL)
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goto err;
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ret = param_cb(params, cbarg);
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OSSL_PARAM_BLD_free_params(params);
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err:
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OSSL_PARAM_BLD_free(tmpl);
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return ret;
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}
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static const OSSL_PARAM mac_key_types[] = {
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OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_PRIV_KEY, NULL, 0),
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OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_PROPERTIES, NULL, 0),
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OSSL_PARAM_END
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};
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static const OSSL_PARAM *mac_imexport_types(int selection)
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{
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if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0)
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return mac_key_types;
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return NULL;
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}
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static const OSSL_PARAM cmac_key_types[] = {
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OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_PRIV_KEY, NULL, 0),
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OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_CIPHER, NULL, 0),
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OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_ENGINE, NULL, 0),
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OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_PROPERTIES, NULL, 0),
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OSSL_PARAM_END
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};
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static const OSSL_PARAM *cmac_imexport_types(int selection)
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{
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if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0)
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return cmac_key_types;
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return NULL;
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}
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static int mac_get_params(void *key, OSSL_PARAM params[])
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{
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return key_to_params(key, NULL, params);
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}
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static const OSSL_PARAM *mac_gettable_params(void *provctx)
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{
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static const OSSL_PARAM gettable_params[] = {
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OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_PRIV_KEY, NULL, 0),
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OSSL_PARAM_END
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};
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return gettable_params;
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}
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static const OSSL_PARAM *cmac_gettable_params(void *provctx)
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{
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static const OSSL_PARAM gettable_params[] = {
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OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_PRIV_KEY, NULL, 0),
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OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_CIPHER, NULL, 0),
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OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_ENGINE, NULL, 0),
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OSSL_PARAM_END
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};
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return gettable_params;
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}
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static int mac_set_params(void *keydata, const OSSL_PARAM params[])
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{
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MAC_KEY *key = keydata;
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const OSSL_PARAM *p;
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if (key == NULL)
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return 0;
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p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_PRIV_KEY);
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if (p != NULL)
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return mac_key_fromdata(key, params);
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return 1;
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}
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static const OSSL_PARAM *mac_settable_params(void *provctx)
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{
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static const OSSL_PARAM settable_params[] = {
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OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_PRIV_KEY, NULL, 0),
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OSSL_PARAM_END
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};
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return settable_params;
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}
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static void *mac_gen_init(void *provctx, int selection)
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{
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OPENSSL_CTX *libctx = PROV_LIBRARY_CONTEXT_OF(provctx);
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struct mac_gen_ctx *gctx = NULL;
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if ((gctx = OPENSSL_zalloc(sizeof(*gctx))) != NULL) {
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gctx->libctx = libctx;
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gctx->selection = selection;
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}
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return gctx;
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}
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static int mac_gen_set_params(void *genctx, const OSSL_PARAM params[])
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{
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struct mac_gen_ctx *gctx = genctx;
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const OSSL_PARAM *p;
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if (gctx == NULL)
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return 0;
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p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_PRIV_KEY);
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if (p != NULL) {
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if (p->data_type != OSSL_PARAM_OCTET_STRING) {
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ERR_raise(ERR_LIB_PROV, ERR_R_PASSED_INVALID_ARGUMENT);
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return 0;
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}
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gctx->priv_key = OPENSSL_secure_malloc(p->data_size);
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if (gctx->priv_key == NULL) {
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ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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memcpy(gctx->priv_key, p->data, p->data_size);
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gctx->priv_key_len = p->data_size;
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}
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return 1;
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}
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static int cmac_gen_set_params(void *genctx, const OSSL_PARAM params[])
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{
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struct mac_gen_ctx *gctx = genctx;
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if (!mac_gen_set_params(genctx, params))
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return 0;
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if (!ossl_prov_cipher_load_from_params(&gctx->cipher, params,
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gctx->libctx)) {
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ERR_raise(ERR_LIB_PROV, ERR_R_PASSED_INVALID_ARGUMENT);
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return 0;
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}
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return 1;
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}
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static const OSSL_PARAM *mac_gen_settable_params(void *provctx)
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{
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static OSSL_PARAM settable[] = {
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OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_PRIV_KEY, NULL, 0),
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OSSL_PARAM_END
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};
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return settable;
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}
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static const OSSL_PARAM *cmac_gen_settable_params(void *provctx)
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{
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static OSSL_PARAM settable[] = {
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OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_PRIV_KEY, NULL, 0),
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OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_CIPHER, NULL, 0),
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OSSL_PARAM_END
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};
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return settable;
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}
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static void *mac_gen(void *genctx, OSSL_CALLBACK *cb, void *cbarg)
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{
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struct mac_gen_ctx *gctx = genctx;
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MAC_KEY *key;
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if (gctx == NULL)
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return NULL;
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if ((key = mac_key_new(gctx->libctx, 0)) == NULL) {
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ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
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return NULL;
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}
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/* If we're doing parameter generation then we just return a blank key */
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if ((gctx->selection & OSSL_KEYMGMT_SELECT_KEYPAIR) == 0)
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return key;
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if (gctx->priv_key == NULL) {
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ERR_raise(ERR_LIB_PROV, EVP_R_INVALID_KEY);
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mac_key_free(key);
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return NULL;
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}
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/*
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* This is horrible but required for backwards compatibility. We don't
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* actually do real key generation at all. We simply copy the key that was
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* previously set in the gctx. Hopefully at some point in the future all
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* of this can be removed and we will only support the EVP_KDF APIs.
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*/
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if (!ossl_prov_cipher_copy(&key->cipher, &gctx->cipher)) {
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ERR_raise(ERR_LIB_PROV, ERR_R_INTERNAL_ERROR);
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return NULL;
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}
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ossl_prov_cipher_reset(&gctx->cipher);
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key->priv_key = gctx->priv_key;
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key->priv_key_len = gctx->priv_key_len;
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gctx->priv_key_len = 0;
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gctx->priv_key = NULL;
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return key;
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}
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static void mac_gen_cleanup(void *genctx)
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{
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struct mac_gen_ctx *gctx = genctx;
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OPENSSL_secure_clear_free(gctx->priv_key, gctx->priv_key_len);
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ossl_prov_cipher_reset(&gctx->cipher);
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OPENSSL_free(gctx);
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}
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const OSSL_DISPATCH mac_keymgmt_functions[] = {
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{ OSSL_FUNC_KEYMGMT_NEW, (void (*)(void))mac_new },
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{ OSSL_FUNC_KEYMGMT_FREE, (void (*)(void))mac_free },
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{ OSSL_FUNC_KEYMGMT_GET_PARAMS, (void (*) (void))mac_get_params },
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{ OSSL_FUNC_KEYMGMT_GETTABLE_PARAMS, (void (*) (void))mac_gettable_params },
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{ OSSL_FUNC_KEYMGMT_SET_PARAMS, (void (*) (void))mac_set_params },
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{ OSSL_FUNC_KEYMGMT_SETTABLE_PARAMS, (void (*) (void))mac_settable_params },
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{ OSSL_FUNC_KEYMGMT_HAS, (void (*)(void))mac_has },
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{ OSSL_FUNC_KEYMGMT_MATCH, (void (*)(void))mac_match },
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{ OSSL_FUNC_KEYMGMT_IMPORT, (void (*)(void))mac_import },
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{ OSSL_FUNC_KEYMGMT_IMPORT_TYPES, (void (*)(void))mac_imexport_types },
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{ OSSL_FUNC_KEYMGMT_EXPORT, (void (*)(void))mac_export },
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{ OSSL_FUNC_KEYMGMT_EXPORT_TYPES, (void (*)(void))mac_imexport_types },
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{ OSSL_FUNC_KEYMGMT_GEN_INIT, (void (*)(void))mac_gen_init },
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{ OSSL_FUNC_KEYMGMT_GEN_SET_PARAMS, (void (*)(void))mac_gen_set_params },
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{ OSSL_FUNC_KEYMGMT_GEN_SETTABLE_PARAMS,
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(void (*)(void))mac_gen_settable_params },
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{ OSSL_FUNC_KEYMGMT_GEN, (void (*)(void))mac_gen },
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{ OSSL_FUNC_KEYMGMT_GEN_CLEANUP, (void (*)(void))mac_gen_cleanup },
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{ 0, NULL }
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};
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const OSSL_DISPATCH cmac_keymgmt_functions[] = {
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{ OSSL_FUNC_KEYMGMT_NEW, (void (*)(void))mac_new_cmac },
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{ OSSL_FUNC_KEYMGMT_FREE, (void (*)(void))mac_free },
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{ OSSL_FUNC_KEYMGMT_GET_PARAMS, (void (*) (void))mac_get_params },
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{ OSSL_FUNC_KEYMGMT_GETTABLE_PARAMS, (void (*) (void))cmac_gettable_params },
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{ OSSL_FUNC_KEYMGMT_SET_PARAMS, (void (*) (void))mac_set_params },
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{ OSSL_FUNC_KEYMGMT_SETTABLE_PARAMS, (void (*) (void))mac_settable_params },
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{ OSSL_FUNC_KEYMGMT_HAS, (void (*)(void))mac_has },
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{ OSSL_FUNC_KEYMGMT_MATCH, (void (*)(void))mac_match },
|
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{ OSSL_FUNC_KEYMGMT_IMPORT, (void (*)(void))mac_import },
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{ 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))mac_gen_init },
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|
{ 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 }
|
|
};
|