diff options
| -rw-r--r-- | ubifs-utils/mkfs.ubifs/mkfs.ubifs.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/ubifs-utils/mkfs.ubifs/mkfs.ubifs.c b/ubifs-utils/mkfs.ubifs/mkfs.ubifs.c index ae1d267..8be84ca 100644 --- a/ubifs-utils/mkfs.ubifs/mkfs.ubifs.c +++ b/ubifs-utils/mkfs.ubifs/mkfs.ubifs.c @@ -581,16 +581,20 @@ static void print_fscrypt_master_key_descriptor(struct fscrypt_context *fctx) normsg(""); } -static struct fscrypt_context *init_fscrypt_context(void) +static struct fscrypt_context *init_fscrypt_context(unsigned int flags, + void *master_key_descriptor, + void *nonce) { struct fscrypt_context *new_fctx = xmalloc(sizeof(*new_fctx)); new_fctx->format = FS_ENCRYPTION_CONTEXT_FORMAT_V1; new_fctx->contents_encryption_mode = FS_ENCRYPTION_MODE_AES_128_CBC; new_fctx->filenames_encryption_mode = FS_ENCRYPTION_MODE_AES_128_CTS; - new_fctx->flags = FS_POLICY_FLAGS_PAD_4; - RAND_bytes((void *)&new_fctx->nonce, FS_KEY_DERIVATION_NONCE_SIZE); + new_fctx->flags = flags; + memcpy(&new_fctx->nonce, nonce, FS_KEY_DERIVATION_NONCE_SIZE); + memcpy(&new_fctx->master_key_descriptor, master_key_descriptor, + FS_KEY_DESCRIPTOR_SIZE); return new_fctx; } @@ -2779,6 +2783,8 @@ static int close_target(void) */ static int init(void) { + __u8 master_key_descriptor[FS_KEY_DESCRIPTOR_SIZE]; + __u8 nonce[FS_KEY_DERIVATION_NONCE_SIZE]; int err, i, main_lebs, big_lpt = 0, sz; c->highest_inum = UBIFS_FIRST_INO; @@ -2821,7 +2827,11 @@ static int init(void) hash_table = xzalloc(sz); //TODO make this a parameter - root_fctx = init_fscrypt_context(); + RAND_bytes((void *)master_key_descriptor, FS_KEY_DESCRIPTOR_SIZE); + RAND_bytes((void *)nonce, FS_KEY_DERIVATION_NONCE_SIZE); + + root_fctx = init_fscrypt_context(FS_POLICY_FLAGS_PAD_4, + master_key_descriptor, nonce); print_fscrypt_master_key_descriptor(root_fctx); c->double_hash = 1; c->encrypted = 1; |