Create a third_party directory for files copied from other projects.

[cumulus.git] / sha1.h

diff --git a/sha1.h b/sha1.h
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--- a/sha1.h
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-/* Declarations of functions and data types used for SHA1 sum library
- * functions.
- * part of Cumulus: Smart Filesystem Backup to Dumb Servers
- *
- * Copyright (C) 2000, 2001, 2003, 2005 Free Software Foundation, Inc.
- * Copyright (C) 2006-2007  The Regents of the University of California
- *
- * Original code (in C) is taken from GNU coreutils (Debian package 5.97-5).
- * Modifications by Michael Vrable <mvrable@cs.ucsd.edu> to integrate into
- * Cumulus.
- *
- * 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 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 SHA1_H
-# define SHA1_H 1
-
-# include <stdio.h>
-# include <stdint.h>
-
-#include <string>
-
-typedef uint32_t md5_uint32;
-
-/* Structure to save state of computation between the single steps.  */
-struct sha1_ctx
-{
-  md5_uint32 A;
-  md5_uint32 B;
-  md5_uint32 C;
-  md5_uint32 D;
-  md5_uint32 E;
-
-  md5_uint32 total[2];
-  md5_uint32 buflen;
-  char buffer[128] __attribute__ ((__aligned__ (__alignof__ (md5_uint32))));
-};
-
-
-/* Initialize structure containing state of computation. */
-extern void sha1_init_ctx (struct sha1_ctx *ctx);
-
-/* 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 necessary that LEN is a multiple of 64!!! */
-extern void sha1_process_block (const void *buffer, size_t len,
-                               struct sha1_ctx *ctx);
-
-/* 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 sha1_process_bytes (const void *buffer, size_t len,
-                               struct sha1_ctx *ctx);
-
-/* Process the remaining bytes in the buffer and put result from CTX
-   in first 20 bytes following RESBUF.  The result is always in little
-   endian byte order, so that a byte-wise output yields to the wanted
-   ASCII representation of the message digest.
-
-   IMPORTANT: On some systems it is required that RESBUF be correctly
-   aligned for a 32 bits value.  */
-extern void *sha1_finish_ctx (struct sha1_ctx *ctx, void *resbuf);
-
-
-/* Put result from CTX in first 20 bytes following RESBUF.  The result is
-   always in little endian byte order, so that a byte-wise output yields
-   to the wanted ASCII representation of the message digest.
-
-   IMPORTANT: On some systems it is required that RESBUF is correctly
-   aligned for a 32 bits value.  */
-extern void *sha1_read_ctx (const struct sha1_ctx *ctx, void *resbuf);
-
-/* An object-oriented wrapper around checksumming functionality. */
-class SHA1Checksum {
-private:
-    struct sha1_ctx ctx;
-    char resbuf[20] __attribute__ ((__aligned__ (__alignof__ (md5_uint32))));
-
-public:
-    SHA1Checksum();
-    ~SHA1Checksum();
-
-    void process(const void *data, size_t len);
-    bool process_file(const char *filename);
-    const uint8_t *checksum();
-    size_t checksum_size() const { return 20; }
-    std::string checksum_str();
-};
-
-#endif