ubifs-utils: Split common source files from mkfs.ubifs

Split common source files into common dir from mkfs.ubifs, this is a
preparation for importing libubifs(from linux kernel) to replace
current UBIFS libs.

Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>

1 files changed, 58 insertions, 0 deletions

diff --git a/ubifs-utils/common/crypto.h b/ubifs-utils/common/crypto.h
new file mode 100644
index 0000000..b6ffad1
--- /dev/null
+++ b/ubifs-utils/common/crypto.h
@@ -0,0 +1,58 @@
+/*
+ * 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: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
+ */
+
+#ifndef UBIFS_CRYPTO_H
+#define UBIFS_CRYPTO_H
+
+#include <sys/types.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdio.h>
+
+
+struct cipher {
+	const char *name;
+	unsigned int key_length;
+
+	ssize_t (*encrypt_block)(const void *plaintext, size_t size,
+				 const void *key, uint64_t block_index,
+				 void *ciphertext);
+
+	ssize_t (*encrypt_fname)(const void *plaintext, size_t size,
+				 const void *key, void *ciphertext);
+
+	unsigned int fscrypt_block_mode;
+	unsigned int fscrypt_fname_mode;
+};
+
+#ifdef WITH_CRYPTO
+int crypto_init(void);
+void crypto_cleanup(void);
+ssize_t derive_key_aes(const void *deriving_key, const void *source_key,
+		       size_t source_key_len, void *derived_key);
+int derive_key_descriptor(const void *source_key, void *descriptor);
+struct cipher *get_cipher(const char *name);
+void list_ciphers(FILE *fp);
+#else
+static inline int crypto_init(void) { return 0;}
+static inline void crypto_cleanup(void) {}
+#endif /* WITH_CRYPTO */
+
+#endif /* UBIFS_CRYPTO_H */
+