mkfs.ubifs: Add crypto helper functions

Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Signed-off-by: Richard Weinberger <richard@nod.at>

1 files changed, 68 insertions, 0 deletions

diff --git a/ubifs-utils/mkfs.ubifs/crypto.h b/ubifs-utils/mkfs.ubifs/crypto.h
new file mode 100644
index 0000000..4e59700
--- /dev/null
+++ b/ubifs-utils/mkfs.ubifs/crypto.h
@@ -0,0 +1,68 @@
+/*
+ * 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;
+
+	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);
+};
+
+
+int crypto_init(void);
+
+void crypto_cleanup(void);
+
+ssize_t encrypt_block_aes128_cbc(const void *plaintext, size_t size,
+				 const void *key, uint64_t block_index,
+				 void *ciphertext);
+
+ssize_t encrypt_block_aes256_xts(const void *plaintext, size_t size,
+				 const void *key, uint64_t block_index,
+				 void *ciphertext);
+
+ssize_t encrypt_aes128_cbc_cts(const void *plaintext, size_t size,
+			       const void *key, void *ciphertext);
+
+ssize_t encrypt_aes256_cbc_cts(const void *plaintext, size_t size,
+			       const void *key, void *ciphertext);
+
+ssize_t derive_key_aes(const void *deriving_key, const void *source_key,
+		       void *derived_key);
+
+
+struct cipher *get_cipher(const char *name);
+
+void list_ciphers(FILE *fp);
+
+#endif /* UBIFS_CRYPTO_H */
+