1 files changed, 67 insertions, 0 deletions
diff --git a/lib/luks1/af.h b/lib/luks1/af.h
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+/*
+ * AFsplitter - Anti forensic information splitter
+ *
+ * Copyright (C) 2004 Clemens Fruhwirth <clemens@endorphin.org>
+ * Copyright (C) 2009-2023 Red Hat, Inc. All rights reserved.
+ *
+ * AFsplitter diffuses information over a large stripe of data,
+ * therefore supporting secure data destruction.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * 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 Library 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+#ifndef INCLUDED_CRYPTSETUP_LUKS_AF_H
+#define INCLUDED_CRYPTSETUP_LUKS_AF_H
+
+#include <stddef.h>
+
+struct crypt_device;
+struct volume_key;
+
+/*
+ * AF_split operates on src and produces information split data in
+ * dst. src is assumed to be of the length blocksize. The data stripe
+ * dst points to must be capable of storing blocksize*blocknumbers.
+ * blocknumbers is the data multiplication factor.
+ *
+ * AF_merge does just the opposite: reproduces the information stored in
+ * src of the length blocksize*blocknumbers into dst of the length
+ * blocksize.
+ *
+ * On error, both functions return -1, 0 otherwise.
+ */
+
+int AF_split(struct crypt_device *ctx, const char *src, char *dst,
+	     size_t blocksize, unsigned int blocknumbers, const char *hash);
+int AF_merge(const char *src, char *dst, size_t blocksize,
+	     unsigned int blocknumbers, const char *hash);
+size_t AF_split_sectors(size_t blocksize, unsigned int blocknumbers);
+
+int LUKS_encrypt_to_storage(
+	char *src, size_t srcLength,
+	const char *cipher,
+	const char *cipher_mode,
+	struct volume_key *vk,
+	unsigned int sector,
+	struct crypt_device *ctx);
+
+int LUKS_decrypt_from_storage(
+	char *dst, size_t dstLength,
+	const char *cipher,
+	const char *cipher_mode,
+	struct volume_key *vk,
+	unsigned int sector,
+	struct crypt_device *ctx);
+
+#endif