mirror of
https://github.com/Aorimn/dislocker
synced 2026-06-08 10:24:29 +00:00
Aorimn
909f4b7592
When decrypting keys (VMK or FVEK mainly), we gave 256 as of the key size. This worked until now but I suspect that was mainly by the chance that the current keys always are 256 bits long. With the XTS mode, it seems the keys sizes have to be doubled, so that would also prepare for the AES-XTS-256 mode, where keys could be 512 (I'm not sure yet).
78 lines
1.8 KiB
C
78 lines
1.8 KiB
C
/* -*- coding: utf-8 -*- */
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/* -*- mode: c -*- */
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/*
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* Dislocker -- enables to read/write on BitLocker encrypted partitions under
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* Linux
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* Copyright (C) 2012-2013 Romain Coltel, Hervé Schauer Consultants
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program 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, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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* USA.
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*/
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#ifndef ENCOMMON_PRIV_H
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#define ENCOMMON_PRIV_H
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#include "dislocker/encryption/encommon.h"
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#include "dislocker/ssl_bindings.h"
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/**
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* AES contexts "used" during encryption/decryption
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* @see encryption/decrypt.c
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* @see encryption/encrypt.c
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*/
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struct _aes_contexts {
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AES_CONTEXT FVEK_E_ctx;
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AES_CONTEXT FVEK_D_ctx;
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AES_CONTEXT TWEAK_E_ctx;
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AES_CONTEXT TWEAK_D_ctx; /* useless, never used */
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};
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typedef enum {
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DIS_ENC_FLAG_USE_DIFFUSER = (1 << 0)
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} dis_enc_flags_e;
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struct _dis_crypt {
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struct _aes_contexts ctx;
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dis_enc_flags_e flags;
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uint16_t sector_size;
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void (*decrypt_fn)(
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dis_aes_contexts_t* ctx,
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uint16_t sector_size,
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uint8_t* sector,
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off_t sector_address,
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uint8_t* buffer
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);
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void (*encrypt_fn)(
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dis_aes_contexts_t* ctx,
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uint16_t sector_size,
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uint8_t* sector,
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off_t sector_address,
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uint8_t* buffer
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);
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};
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#endif /* ENCOMMON_PRIV_H */
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