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https://github.com/DarkMatterCore/nxdumptool.git
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f79680184d
* aes: add aes128EcbCrypt() as a one-shot function to perform AES-128-ECB crypto. The rest of the codebase now calls this function whenever suitable. * fs_ext: add const keyword to IPC input structs wherever suitable. * key_sources: add hardcoded master key vectors (prod, dev); master KEK sources (Erista, Mariko); master key source; ticket common key source; SMC key type sources; SMC seal key masks; AES key generation source; NCA header KEK source; NCA header key source and NCA KAEK sources. Also fixed the hardcoded gamecard CardInfo key source for dev units (it was previously generated using retail keydata, my bad). * keys: remove keysGetNcaMainSignatureModulus(); remove keysDecryptNcaKeyAreaEntry(); repurpose keyset struct to only hold keys that can actually be used for the current hardware type; remove KeysGameCardKeyset; remove keysIsXXModulusYYMandatory() helpers; remove keysRetrieveKeysFromProgramMemory(); remove keysDeriveSealedNcaKeyAreaEncryptionKeys(); add keysDeriveMasterKeys() and keysDerivePerGenerationKeys(); rename keysDeriveGameCardKeys() -> keysDeriveGcCardInfoKey(); add small reimplementations of GenerateAesKek, LoadAesKey and GenerateAesKey; add keysLoadAesKeyFromAesKek() and keysGenerateAesKeyFromAesKek() wrappers. Furthermore, master key derivation is now carried out manually using hardcoded key sources and the last known master key, which is loaded from the Lockpick_RCM keys file -- if the last known master key is unavailable, the key derivation algorithm will then fallback to TSEC root key / Mariko KEK based key derivation, depending on the hardware type. * nca: add hardcoded NCA man signature moduli (prod, dev); merge ncaDecryptKeyArea() and ncaEncryptKeyArea() into ncaKeyAreaCrypt(). * nxdt_utils: add utilsIsMarikoUnit(); remove _utilsAppletModeCheck(); rename utilsAppletModeCheck() -> utilsIsAppletMode(). * services: remove spl:mig dependency (yay). * smc: add SmcKeyType enum; add SmcSealKey enum; add SmcGenerateAesKekOption struct; add smcPrepareGenerateAesKekOption().
62 lines
2 KiB
C
62 lines
2 KiB
C
/*
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* aes.c
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*
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* Copyright (c) 2020-2022, DarkMatterCore <pabloacurielz@gmail.com>.
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*
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* This file is part of nxdumptool (https://github.com/DarkMatterCore/nxdumptool).
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*
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* nxdumptool 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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* nxdumptool 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 this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "nxdt_utils.h"
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void aes128EcbCrypt(void *dst, const void *src, const void *key, bool encrypt)
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{
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if (!dst || !src || !key) return;
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Aes128Context ctx = {0};
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aes128ContextCreate(&ctx, key, encrypt);
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if (encrypt)
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{
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aes128EncryptBlock(&ctx, dst, src);
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} else {
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aes128DecryptBlock(&ctx, dst, src);
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}
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}
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size_t aes128XtsNintendoCrypt(Aes128XtsContext *ctx, void *dst, const void *src, size_t size, u64 sector, size_t sector_size, bool encrypt)
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{
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if (!ctx || !dst || !src || !size || !sector_size || (size % sector_size) != 0)
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{
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LOG_MSG_ERROR("Invalid parameters!");
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return 0;
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}
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size_t i, crypt_res = 0;
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u64 cur_sector = sector;
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u8 *dst_u8 = (u8*)dst;
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const u8 *src_u8 = (const u8*)src;
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for(i = 0; i < size; i += sector_size, cur_sector++)
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{
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/* We have to force a sector reset on each new sector to actually enable Nintendo AES-XTS cipher tweak. */
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aes128XtsContextResetSector(ctx, cur_sector, true);
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crypt_res = (encrypt ? aes128XtsEncrypt(ctx, dst_u8 + i, src_u8 + i, sector_size) : aes128XtsDecrypt(ctx, dst_u8 + i, src_u8 + i, sector_size));
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if (crypt_res != sector_size) break;
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}
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return i;
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}
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