Prepare for radical source tree reorganization.zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 69 insertions, 0 deletions

diff --git a/REORG.TODO/crypt/sha256.h b/REORG.TODO/crypt/sha256.h
new file mode 100644
index 0000000000..bc4c9b2e61
--- /dev/null
+++ b/REORG.TODO/crypt/sha256.h
@@ -0,0 +1,69 @@
+/* Declaration of functions and data types used for SHA256 sum computing
+   library functions.
+   Copyright (C) 2007-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _SHA256_H
+#define _SHA256_H 1
+
+#include <limits.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <endian.h>
+
+
+/* Structure to save state of computation between the single steps.  */
+struct sha256_ctx
+{
+  uint32_t H[8];
+
+  union
+  {
+    uint64_t total64;
+#define TOTAL64_low (1 - (BYTE_ORDER == LITTLE_ENDIAN))
+#define TOTAL64_high (BYTE_ORDER == LITTLE_ENDIAN)
+    uint32_t total[2];
+  };
+  uint32_t buflen;
+  union
+  {
+    char buffer[128];
+    uint32_t buffer32[32];
+    uint64_t buffer64[16];
+  };
+};
+
+/* Initialize structure containing state of computation.
+   (FIPS 180-2: 5.3.2)  */
+extern void __sha256_init_ctx (struct sha256_ctx *ctx) __THROW;
+
+/* Starting with the result of former calls of this function (or the
+   initialization function update the context for the next LEN bytes
+   starting at BUFFER.
+   It is NOT required that LEN is a multiple of 64.  */
+extern void __sha256_process_bytes (const void *buffer, size_t len,
+				    struct sha256_ctx *ctx) __THROW;
+
+/* Process the remaining bytes in the buffer and put result from CTX
+   in first 32 bytes following RESBUF.
+
+   IMPORTANT: On some systems it is required that RESBUF is correctly
+   aligned for a 32 bits value.  */
+extern void *__sha256_finish_ctx (struct sha256_ctx *ctx, void *resbuf)
+  __THROW;
+
+#endif /* sha256.h */