74 lines
2.7 KiB
C
74 lines
2.7 KiB
C
/*
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* VAS_EBOOT -- GRand Unified Bootloader
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* Copyright (C) 2022 Microsoft Corporation
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* Copyright (C) 2024 Free Software Foundation, Inc.
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*
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* VAS_EBOOT is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* VAS_EBOOT is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with VAS_EBOOT. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <VasEBoot/dl.h>
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#include <VasEBoot/list.h>
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#include <VasEBoot/misc.h>
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#include <VasEBoot/mm.h>
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#include <VasEBoot/key_protector.h>
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VAS_EBOOT_MOD_LICENSE ("GPLv3+");
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struct VasEBoot_key_protector *VasEBoot_key_protectors = NULL;
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VasEBoot_err_t
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VasEBoot_key_protector_register (struct VasEBoot_key_protector *protector)
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{
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if (protector == NULL || protector->name == NULL || protector->name[0] == '\0')
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return VasEBoot_error (VAS_EBOOT_ERR_BAD_ARGUMENT, "Invalid key protector for registration");
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if (VasEBoot_key_protectors != NULL &&
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VasEBoot_named_list_find (VAS_EBOOT_AS_NAMED_LIST (VasEBoot_key_protectors), protector->name) != NULL)
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return VasEBoot_error (VAS_EBOOT_ERR_BAD_ARGUMENT, "Key protector '%s' already registered", protector->name);
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VasEBoot_list_push (VAS_EBOOT_AS_LIST_P (&VasEBoot_key_protectors), VAS_EBOOT_AS_LIST (protector));
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return VAS_EBOOT_ERR_NONE;
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}
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VasEBoot_err_t
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VasEBoot_key_protector_unregister (struct VasEBoot_key_protector *protector)
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{
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if (protector == NULL)
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return VasEBoot_error (VAS_EBOOT_ERR_BAD_ARGUMENT, "Invalid key protector for unregistration");
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VasEBoot_list_remove (VAS_EBOOT_AS_LIST (protector));
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return VAS_EBOOT_ERR_NONE;
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}
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VasEBoot_err_t
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VasEBoot_key_protector_recover_key (const char *protector, VasEBoot_uint8_t **key,
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VasEBoot_size_t *key_size)
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{
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struct VasEBoot_key_protector *kp = NULL;
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if (VasEBoot_key_protectors == NULL)
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return VasEBoot_error (VAS_EBOOT_ERR_OUT_OF_RANGE, "No key protector registered");
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if (protector == NULL || protector[0] == '\0')
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return VasEBoot_error (VAS_EBOOT_ERR_BAD_ARGUMENT, "Invalid key protector");
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kp = VasEBoot_named_list_find (VAS_EBOOT_AS_NAMED_LIST (VasEBoot_key_protectors), protector);
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if (kp == NULL)
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return VasEBoot_error (VAS_EBOOT_ERR_OUT_OF_RANGE, "Key protector '%s' not found", protector);
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return kp->recover_key (key, key_size);
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}
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