wiiu_crypto.h

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/*
 * This file is part of the Aaru Data Preservation Suite.
 * Copyright (c) 2019-2026 Natalia Portillo.
 *
 * This library is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; version 2.1 of the License.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, see
 * <https://www.gnu.org/licenses/>.
 *
 * Wii U disc encryption: partition key map, encrypt/decrypt, serialization.
 */
 
#ifndef LIBAARUFORMAT_WIIU_CRYPTO_H
#define LIBAARUFORMAT_WIIU_CRYPTO_H
 
#include <stdbool.h>
#include <stdint.h>
 
/* Forward declaration */
typedef struct aaruformat_context aaruformat_context;
 
#ifdef __cplusplus
extern "C"
{
#endif
 
#define WIIU_CRYPTO_SECTOR_SIZE      0x8000 
#define WIIU_LOGICAL_PER_PHYSICAL    16     
#define WIIU_HEADER_PHYSICAL_SECTORS 3      
#define WIIU_MAX_PARTITIONS          8      

    typedef struct WiiuPartitionRegion
    {
        uint32_t start_sector; 
        uint32_t end_sector;   
        uint8_t  key[16];      
    } WiiuPartitionRegion;

    const uint8_t *wiiu_get_sector_key(const WiiuPartitionRegion *regions, uint32_t region_count,
                                       uint64_t logical_sector);

    bool wiiu_is_sector_encrypted(const WiiuPartitionRegion *regions, uint32_t region_count, uint64_t logical_sector);

    void wiiu_encrypt_physical_sector(const uint8_t key[16], uint8_t *data, uint32_t length);

    void wiiu_decrypt_physical_sector(const uint8_t key[16], uint8_t *data, uint32_t length);

    int32_t wiiu_serialize_partition_key_map(const WiiuPartitionRegion *regions, uint32_t count, uint8_t **out_data,
                                             uint32_t *out_len);

    int32_t wiiu_deserialize_partition_key_map(const uint8_t *data, uint32_t data_len, WiiuPartitionRegion **regions,
                                               uint32_t *count);

    void wiiu_lazy_init(aaruformat_context *ctx);
 
#ifdef __cplusplus
}
#endif
 
#endif /* LIBAARUFORMAT_WIIU_CRYPTO_H */