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https://github.com/DarkMatterCore/nxdumptool.git
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69 lines
3.1 KiB
C
69 lines
3.1 KiB
C
#pragma once
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#ifndef __KEYS_H__
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#define __KEYS_H__
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#include <switch.h>
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#include "nca.h"
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#define FS_TID (u64)0x0100000000000000
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#define SEG_TEXT BIT(0)
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#define SEG_RODATA BIT(1)
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#define SEG_DATA BIT(2)
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#define ETICKET_DEVKEY_DATA_SIZE 0x244
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#define ETICKET_DEVKEY_CTR_OFFSET 0x4
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#define ETICKET_DEVKEY_RSA_OFFSET 0x14
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#define ETICKET_DEVKEY_RSA_SIZE (ETICKET_DEVKEY_DATA_SIZE - ETICKET_DEVKEY_RSA_OFFSET)
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#define SIGTYPE_RSA2048_SHA1 (u32)0x10001
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#define SIGTYPE_RSA2048_SHA256 (u32)0x10004
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typedef struct {
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u64 titleID;
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u8 mask;
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u8 *data;
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u64 dataSize;
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} PACKED keyLocation;
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typedef struct {
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char name[128];
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u8 hash[SHA256_HASH_SIZE];
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u64 size;
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} PACKED keyInfo;
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typedef struct {
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u16 memory_key_cnt; /* Key counter for keys retrieved from memory. */
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u16 ext_key_cnt; /* Key counter for keys retrieved from keysfile. */
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u32 total_key_cnt; /* Total key counter. */
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// Needed to decrypt the NCA header using AES-128-XTS
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u8 header_kek_source[0x10]; /* Seed for header kek. Retrieved from the .rodata section in the FS sysmodule. */
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u8 header_key_source[0x20]; /* Seed for NCA header key. Retrieved from the .data section in the FS sysmodule. */
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u8 header_kek[0x10]; /* NCA header kek. Generated from header_kek_source. */
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u8 header_key[0x20]; /* NCA header key. Generated from header_kek and header_key_source. */
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// Needed to derive the KAEK used to decrypt the NCA key area
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u8 key_area_key_application_source[0x10]; /* Seed for kaek 0. Retrieved from the .rodata section in the FS sysmodule. */
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u8 key_area_key_ocean_source[0x10]; /* Seed for kaek 1. Retrieved from the .rodata section in the FS sysmodule. */
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u8 key_area_key_system_source[0x10]; /* Seed for kaek 2. Retrieved from the .rodata section in the FS sysmodule. */
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// Needed to decrypt the title key block from an eTicket. Retrieved from the Lockpick_RCM keys file.
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u8 eticket_rsa_kek[0x10]; /* eTicket RSA kek. */
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u8 titlekeks[0x20][0x10]; /* Title key encryption keys. */
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// Needed to reencrypt the NCA key area for tik-less NSP dumps. Retrieved from the Lockpick_RCM keys file.
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u8 key_area_keys[0x20][3][0x10]; /* Key area encryption keys. */
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// Console specific. Needed to calculate the AES CMAC for savefiles. Retrieved from the Lockpick_RCM keys file.
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u8 save_mac_key[0x10]; /* Savefile CMAC key */
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} PACKED nca_keyset_t;
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bool loadMemoryKeys();
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bool decryptNcaKeyArea(nca_header_t *dec_nca_header, u8 *out);
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bool loadExternalKeys();
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int retrieveNcaTikTitleKey(nca_header_t *dec_nca_header, u8 *out_tik, u8 *out_enc_key, u8 *out_dec_key);
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bool generateEncryptedNcaKeyAreaWithTitlekey(nca_header_t *dec_nca_header, u8 *decrypted_nca_keys);
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#endif
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