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/*
* LUKS - Linux Unified Key Setup, keyslot unlock helpers
*
* Copyright (C) 2022-2023 Red Hat, Inc. All rights reserved.
* Copyright (C) 2022-2023 Ondrej Kozina
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef KEYSLOT_CONTEXT_H
#define KEYSLOT_CONTEXT_H
#include <stdbool.h>
#include <stdint.h>
#include "internal.h"
typedef int (*keyslot_context_get_key) (
struct crypt_device *cd,
struct crypt_keyslot_context *kc,
int keyslot,
int segment,
struct volume_key **r_vk);
typedef int (*keyslot_context_get_volume_key) (
struct crypt_device *cd,
struct crypt_keyslot_context *kc,
int keyslot,
struct volume_key **r_vk);
typedef int (*keyslot_context_get_passphrase) (
struct crypt_device *cd,
struct crypt_keyslot_context *kc,
const char **r_passphrase,
size_t *r_passphrase_size);
/* crypt_keyslot_context */
struct crypt_keyslot_context {
int type;
union {
struct {
const char *passphrase;
size_t passphrase_size;
} p;
struct {
const char *keyfile;
uint64_t keyfile_offset;
size_t keyfile_size;
} kf;
struct {
int id;
const char *type;
const char *pin;
size_t pin_size;
void *usrptr;
} t;
struct {
const char *volume_key;
size_t volume_key_size;
} k;
} u;
int error;
char *i_passphrase;
size_t i_passphrase_size;
keyslot_context_get_key get_luks2_key;
keyslot_context_get_volume_key get_luks1_volume_key;
keyslot_context_get_volume_key get_luks2_volume_key;
keyslot_context_get_passphrase get_passphrase;
};
void crypt_keyslot_context_destroy_internal(struct crypt_keyslot_context *method);
void crypt_keyslot_unlock_by_key_init_internal(struct crypt_keyslot_context *kc,
const char *volume_key,
size_t volume_key_size);
void crypt_keyslot_unlock_by_passphrase_init_internal(struct crypt_keyslot_context *kc,
const char *passphrase,
size_t passphrase_size);
void crypt_keyslot_unlock_by_keyfile_init_internal(struct crypt_keyslot_context *kc,
const char *keyfile,
size_t keyfile_size,
uint64_t keyfile_offset);
void crypt_keyslot_unlock_by_token_init_internal(struct crypt_keyslot_context *kc,
int token,
const char *type,
const char *pin,
size_t pin_size,
void *usrptr);
const char *keyslot_context_type_string(const struct crypt_keyslot_context *kc);
#endif /* KEYSLOT_CONTEXT_H */
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