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annotate lib/sha512.h @ 17463:203c036eb0c6

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bootstrap: support checksum utils without a --status option * build-aux/bootstrap: Only look for sha1sum if updating po files. Add sha1 to the list of supported checksum utils since it's now supported through adjustments below. (update_po_files): Remove the use of --status in a way that will suppress all error messages, but since this is only used to minimize updates, it shouldn't cause an issue. Exit early if there is a problem updating the po file checksums. (find_tool): Remove the check for --version support as this is optional as per commit 86186b17. Don't even check for the presence of the command as if that is needed, it's supported through configuring prerequisites in bootstrap.conf. Prompt that when a tool isn't found, one can define an environment variable to add to the hardcoded search list.
author Pádraig Brady <P@draigBrady.com>
date Thu, 08 Aug 2013 11:08:49 +0100
parents e542fd46ad6f
children
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1 /* Declarations of functions and data types used for SHA512 and SHA384 sum
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2 library functions.
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3 Copyright (C) 2005-2006, 2008-2013 Free Software Foundation, Inc.
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4
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5 This program is free software: you can redistribute it and/or modify
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6 it under the terms of the GNU General Public License as published by
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7 the Free Software Foundation, either version 3 of the License, or
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8 (at your option) any later version.
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9
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10 This program is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 GNU General Public License for more details.
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14
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15 You should have received a copy of the GNU General Public License
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16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
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17
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18 #ifndef SHA512_H
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19 # define SHA512_H 1
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20
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21 # include <stdio.h>
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22
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23 # include "u64.h"
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24
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25 # ifdef __cplusplus
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26 extern "C" {
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27 # endif
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28
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29 /* Structure to save state of computation between the single steps. */
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30 struct sha512_ctx
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31 {
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32 u64 state[8];
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33
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34 u64 total[2];
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35 size_t buflen;
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36 u64 buffer[32];
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37 };
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38
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39 enum { SHA384_DIGEST_SIZE = 384 / 8 };
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40 enum { SHA512_DIGEST_SIZE = 512 / 8 };
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41
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42 /* Initialize structure containing state of computation. */
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43 extern void sha512_init_ctx (struct sha512_ctx *ctx);
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44 extern void sha384_init_ctx (struct sha512_ctx *ctx);
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45
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46 /* Starting with the result of former calls of this function (or the
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47 initialization function update the context for the next LEN bytes
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48 starting at BUFFER.
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49 It is necessary that LEN is a multiple of 128!!! */
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50 extern void sha512_process_block (const void *buffer, size_t len,
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51 struct sha512_ctx *ctx);
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52
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53 /* Starting with the result of former calls of this function (or the
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54 initialization function update the context for the next LEN bytes
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55 starting at BUFFER.
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56 It is NOT required that LEN is a multiple of 128. */
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57 extern void sha512_process_bytes (const void *buffer, size_t len,
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58 struct sha512_ctx *ctx);
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59
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60 /* Process the remaining bytes in the buffer and put result from CTX
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61 in first 64 (48) bytes following RESBUF. The result is always in little
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62 endian byte order, so that a byte-wise output yields to the wanted
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63 ASCII representation of the message digest. */
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64 extern void *sha512_finish_ctx (struct sha512_ctx *ctx, void *resbuf);
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65 extern void *sha384_finish_ctx (struct sha512_ctx *ctx, void *resbuf);
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66
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67
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68 /* Put result from CTX in first 64 (48) bytes following RESBUF. The result is
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69 always in little endian byte order, so that a byte-wise output yields
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70 to the wanted ASCII representation of the message digest.
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71
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72 IMPORTANT: On some systems it is required that RESBUF is correctly
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73 aligned for a 32 bits value. */
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74 extern void *sha512_read_ctx (const struct sha512_ctx *ctx, void *resbuf);
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75 extern void *sha384_read_ctx (const struct sha512_ctx *ctx, void *resbuf);
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77
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78 /* Compute SHA512 (SHA384) message digest for bytes read from STREAM. The
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79 resulting message digest number will be written into the 64 (48) bytes
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80 beginning at RESBLOCK. */
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81 extern int sha512_stream (FILE *stream, void *resblock);
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82 extern int sha384_stream (FILE *stream, void *resblock);
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83
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84 /* Compute SHA512 (SHA384) message digest for LEN bytes beginning at BUFFER. The
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85 result is always in little endian byte order, so that a byte-wise
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86 output yields to the wanted ASCII representation of the message
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87 digest. */
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88 extern void *sha512_buffer (const char *buffer, size_t len, void *resblock);
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89 extern void *sha384_buffer (const char *buffer, size_t len, void *resblock);
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90
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91 # ifdef __cplusplus
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92 }
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93 # endif
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94
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95 #endif