Mercurial > dovecot > core-2.2

annotate src/lib/hash-method.c @ 23007:36e01285b5b8

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lib: buffer - Improve header comment for buffer_insert() and buffer_delete().
author Stephan Bosch <stephan.bosch@dovecot.fi>
date Mon, 18 Mar 2019 00:52:37 +0100
parents cb108f786fb4
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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cb108f786fb4 Updated copyright notices to include the year 2018.
Stephan Bosch <stephan.bosch@dovecot.fi>
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1 /* Copyright (c) 2010-2018 Dovecot authors, see the included COPYING file */
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2
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3 #include "lib.h"
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4 #include "md4.h"
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5 #include "md5.h"
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6 #include "sha1.h"
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7 #include "sha2.h"
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8 #include "sha3.h"
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9 #include "hash-method.h"
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10
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11 const struct hash_method *hash_method_lookup(const char *name)
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12 {
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13 unsigned int i;
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14
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15 for (i = 0; hash_methods[i] != NULL; i++) {
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16 if (strcmp(hash_methods[i]->name, name) == 0)
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17 return hash_methods[i];
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18 }
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19 return NULL;
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20 }
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21
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22 static void hash_method_init_size(void *context)
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23 {
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24 uint64_t *ctx = context;
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25
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26 *ctx = 0;
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27 }
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28
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29 static void
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30 hash_method_loop_size(void *context, const void *data ATTR_UNUSED, size_t size)
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31 {
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32 uint64_t *ctx = context;
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33
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34 *ctx += size;
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35 }
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36
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37 static void hash_method_result_size(void *context, unsigned char *result_r)
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38 {
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39 uint64_t *ctx = context;
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40
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41 result_r[0] = (*ctx & 0xff00000000000000ULL) >> 56;
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42 result_r[1] = (*ctx & 0x00ff000000000000ULL) >> 48;
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43 result_r[2] = (*ctx & 0x0000ff0000000000ULL) >> 40;
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44 result_r[3] = (*ctx & 0x000000ff00000000ULL) >> 32;
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45 result_r[4] = (*ctx & 0x00000000ff000000ULL) >> 24;
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46 result_r[5] = (*ctx & 0x0000000000ff0000ULL) >> 16;
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47 result_r[6] = (*ctx & 0x000000000000ff00ULL) >> 8;
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48 result_r[7] = (*ctx & 0x00000000000000ffULL);
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49 }
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50
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51 static const struct hash_method hash_method_size = {
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52 "size",
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53 sizeof(uint64_t),
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54 sizeof(uint64_t),
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55
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56 hash_method_init_size,
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57 hash_method_loop_size,
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58 hash_method_result_size
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59 };
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60
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61 const struct hash_method *hash_methods[] = {
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62 &hash_method_md4,
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63 &hash_method_md5,
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64 &hash_method_sha1,
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65 &hash_method_sha256,
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66 &hash_method_sha512,
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67 &hash_method_sha3_256,
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68 &hash_method_sha3_512,
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69 &hash_method_size,
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70 NULL
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71 };