diff options
Diffstat (limited to 'ubifs-utils/mkfs.ubifs/fscrypt.h')
| -rw-r--r-- | ubifs-utils/mkfs.ubifs/fscrypt.h | 171 |
1 files changed, 0 insertions, 171 deletions
diff --git a/ubifs-utils/mkfs.ubifs/fscrypt.h b/ubifs-utils/mkfs.ubifs/fscrypt.h deleted file mode 100644 index ff3d326..0000000 --- a/ubifs-utils/mkfs.ubifs/fscrypt.h +++ /dev/null @@ -1,171 +0,0 @@ -/* - * Copyright (C) 2017 sigma star gmbh - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published by - * the Free Software Foundation. - * - * 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 St, Fifth Floor, Boston, MA 02110-1301 USA - * - * Authors: Richard Weinberger <richard@sigma-star.at> - * David Oberhollenzer <david.oberhollenzer@sigma-star.at> - */ - -#ifndef FSCRYPT_H -#define FSCRYPT_H - - -#include "mkfs.ubifs.h" -#include <sys/types.h> -#include "crypto.h" - -#ifndef FS_KEY_DESCRIPTOR_SIZE -#define FS_KEY_DESCRIPTOR_SIZE 8 -#endif -#define FS_ENCRYPTION_CONTEXT_FORMAT_V1 1 -#define FS_KEY_DERIVATION_NONCE_SIZE 16 - -#ifndef FS_ENCRYPTION_MODE_AES_256_XTS -#define FS_ENCRYPTION_MODE_AES_256_XTS 1 -#endif - -#ifndef FS_ENCRYPTION_MODE_AES_256_CTS -#define FS_ENCRYPTION_MODE_AES_256_CTS 4 -#endif - -#ifndef FS_ENCRYPTION_MODE_AES_128_CBC -#define FS_ENCRYPTION_MODE_AES_128_CBC 5 -#endif - -#ifndef FS_ENCRYPTION_MODE_AES_128_CTS -#define FS_ENCRYPTION_MODE_AES_128_CTS 6 -#endif - -#ifndef FS_POLICY_FLAGS_VALID -#define FS_POLICY_FLAGS_PAD_4 0x00 -#define FS_POLICY_FLAGS_PAD_8 0x01 -#define FS_POLICY_FLAGS_PAD_16 0x02 -#define FS_POLICY_FLAGS_PAD_32 0x03 -#define FS_POLICY_FLAGS_PAD_MASK 0x03 -#define FS_POLICY_FLAGS_VALID 0x03 -#endif - -#define FS_CRYPTO_BLOCK_SIZE 16 - -/** - * Encryption context for inode - * - * Protector format: - * 1 byte: Protector format (1 = this version) - * 1 byte: File contents encryption mode - * 1 byte: File names encryption mode - * 1 byte: Flags - * 8 bytes: Master Key descriptor - * 16 bytes: Encryption Key derivation nonce - */ -struct fscrypt_context { - __u8 format; - __u8 contents_encryption_mode; - __u8 filenames_encryption_mode; - __u8 flags; - __u8 master_key_descriptor[FS_KEY_DESCRIPTOR_SIZE]; - __u8 nonce[FS_KEY_DERIVATION_NONCE_SIZE]; -} __attribute__((packed)); - -/** - * For encrypted symlinks, the ciphertext length is stored at the beginning - * of the string in little-endian format. - */ -struct fscrypt_symlink_data { - __le16 len; - char encrypted_path[1]; -} __attribute__((packed)); - - -#ifndef FS_MAX_KEY_SIZE -#define FS_MAX_KEY_SIZE 64 -#endif - -#ifndef FS_IV_SIZE -#define FS_IV_SIZE 16 -#endif - -#ifdef WITH_CRYPTO -unsigned char *calc_fscrypt_subkey(struct fscrypt_context *fctx); -struct fscrypt_context *inherit_fscrypt_context(struct fscrypt_context *fctx); -void free_fscrypt_context(struct fscrypt_context *fctx); -unsigned int fscrypt_fname_encrypted_size(struct fscrypt_context *fctx, - unsigned int ilen); -int encrypt_path(void **outbuf, void *data, unsigned int data_len, - unsigned int max_namelen, struct fscrypt_context *fctx); -int encrypt_data_node(struct fscrypt_context *fctx, unsigned int block_no, - struct ubifs_data_node *dn, size_t length); -struct fscrypt_context *init_fscrypt_context(const char *cipher_name, - unsigned int flags, - const char *key_file, - const char *key_descriptor); -#else -static inline struct fscrypt_context *init_fscrypt_context( - const char *cipher_name, - unsigned int flags, - const char *key_file, - const char *key_descriptor) -{ - (void)cipher_name; - (void)flags; - (void)key_file; - (void)key_descriptor; - - assert(0); - return NULL; -} - -static inline void free_fscrypt_context(struct fscrypt_context *fctx) -{ - (void)fctx; - - assert(!fctx); -} - -static inline int encrypt_path(void **outbuf, void *data, unsigned int data_len, - unsigned int max_namelen, struct fscrypt_context *fctx) -{ - (void)outbuf; - (void)data; - (void)data_len; - (void)max_namelen; - (void)fctx; - - assert(0); - return -1; -} - -static inline int encrypt_data_node(struct fscrypt_context *fctx, unsigned int block_no, - struct ubifs_data_node *dn, size_t length) -{ - (void)fctx; - (void)block_no; - (void)dn; - (void)length; - - assert(0); - return -1; -} - -static inline struct fscrypt_context *inherit_fscrypt_context(struct fscrypt_context *fctx) -{ - (void)fctx; - - assert(!fctx); - return NULL; -} -#endif /* WITH_CRYPTO */ -#endif /* FSCRYPT_H */ - |