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annotate lib/Support/MD5.cpp @ 83:60c9769439b8

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LLVM 3.7
author Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
date Wed, 18 Feb 2015 14:55:36 +0900
parents 54457678186b
children 1172e4bd9c6f
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1 /*
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2 * This code is derived from (original license follows):
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3 *
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4 * This is an OpenSSL-compatible implementation of the RSA Data Security, Inc.
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5 * MD5 Message-Digest Algorithm (RFC 1321).
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6 *
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7 * Homepage:
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8 * http://openwall.info/wiki/people/solar/software/public-domain-source-code/md5
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9 *
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10 * Author:
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11 * Alexander Peslyak, better known as Solar Designer <solar at openwall.com>
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12 *
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13 * This software was written by Alexander Peslyak in 2001. No copyright is
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14 * claimed, and the software is hereby placed in the public domain.
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15 * In case this attempt to disclaim copyright and place the software in the
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16 * public domain is deemed null and void, then the software is
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17 * Copyright (c) 2001 Alexander Peslyak and it is hereby released to the
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18 * general public under the following terms:
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19 *
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20 * Redistribution and use in source and binary forms, with or without
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21 * modification, are permitted.
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22 *
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23 * There's ABSOLUTELY NO WARRANTY, express or implied.
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24 *
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25 * (This is a heavily cut-down "BSD license".)
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26 *
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27 * This differs from Colin Plumb's older public domain implementation in that
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28 * no exactly 32-bit integer data type is required (any 32-bit or wider
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29 * unsigned integer data type will do), there's no compile-time endianness
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30 * configuration, and the function prototypes match OpenSSL's. No code from
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31 * Colin Plumb's implementation has been reused; this comment merely compares
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32 * the properties of the two independent implementations.
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33 *
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34 * The primary goals of this implementation are portability and ease of use.
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35 * It is meant to be fast, but not as fast as possible. Some known
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36 * optimizations are not included to reduce source code size and avoid
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37 * compile-time configuration.
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38 */
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39
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40 #include "llvm/ADT/ArrayRef.h"
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41 #include "llvm/Support/Format.h"
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42 #include "llvm/Support/MD5.h"
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43 #include "llvm/Support/raw_ostream.h"
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44 #include <cstring>
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45
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46 // The basic MD5 functions.
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47
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48 // F and G are optimized compared to their RFC 1321 definitions for
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49 // architectures that lack an AND-NOT instruction, just like in Colin Plumb's
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50 // implementation.
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51 #define F(x, y, z) ((z) ^ ((x) & ((y) ^ (z))))
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52 #define G(x, y, z) ((y) ^ ((z) & ((x) ^ (y))))
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53 #define H(x, y, z) ((x) ^ (y) ^ (z))
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54 #define I(x, y, z) ((y) ^ ((x) | ~(z)))
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55
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56 // The MD5 transformation for all four rounds.
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57 #define STEP(f, a, b, c, d, x, t, s) \
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58 (a) += f((b), (c), (d)) + (x) + (t); \
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59 (a) = (((a) << (s)) | (((a) & 0xffffffff) >> (32 - (s)))); \
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60 (a) += (b);
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61
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62 // SET reads 4 input bytes in little-endian byte order and stores them
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63 // in a properly aligned word in host byte order.
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64 #define SET(n) \
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65 (block[(n)] = \
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66 (MD5_u32plus) ptr[(n) * 4] | ((MD5_u32plus) ptr[(n) * 4 + 1] << 8) | \
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67 ((MD5_u32plus) ptr[(n) * 4 + 2] << 16) | \
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68 ((MD5_u32plus) ptr[(n) * 4 + 3] << 24))
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69 #define GET(n) (block[(n)])
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70
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71 namespace llvm {
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72
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73 /// \brief This processes one or more 64-byte data blocks, but does NOT update
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74 ///the bit counters. There are no alignment requirements.
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75 const uint8_t *MD5::body(ArrayRef<uint8_t> Data) {
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76 const uint8_t *ptr;
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77 MD5_u32plus a, b, c, d;
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78 MD5_u32plus saved_a, saved_b, saved_c, saved_d;
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79 unsigned long Size = Data.size();
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80
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81 ptr = Data.data();
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82
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83 a = this->a;
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84 b = this->b;
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85 c = this->c;
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86 d = this->d;
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87
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88 do {
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89 saved_a = a;
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90 saved_b = b;
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91 saved_c = c;
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92 saved_d = d;
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93
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94 // Round 1
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95 STEP(F, a, b, c, d, SET(0), 0xd76aa478, 7)
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96 STEP(F, d, a, b, c, SET(1), 0xe8c7b756, 12)
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97 STEP(F, c, d, a, b, SET(2), 0x242070db, 17)
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98 STEP(F, b, c, d, a, SET(3), 0xc1bdceee, 22)
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99 STEP(F, a, b, c, d, SET(4), 0xf57c0faf, 7)
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100 STEP(F, d, a, b, c, SET(5), 0x4787c62a, 12)
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101 STEP(F, c, d, a, b, SET(6), 0xa8304613, 17)
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102 STEP(F, b, c, d, a, SET(7), 0xfd469501, 22)
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103 STEP(F, a, b, c, d, SET(8), 0x698098d8, 7)
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104 STEP(F, d, a, b, c, SET(9), 0x8b44f7af, 12)
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105 STEP(F, c, d, a, b, SET(10), 0xffff5bb1, 17)
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106 STEP(F, b, c, d, a, SET(11), 0x895cd7be, 22)
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107 STEP(F, a, b, c, d, SET(12), 0x6b901122, 7)
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108 STEP(F, d, a, b, c, SET(13), 0xfd987193, 12)
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109 STEP(F, c, d, a, b, SET(14), 0xa679438e, 17)
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110 STEP(F, b, c, d, a, SET(15), 0x49b40821, 22)
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111
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112 // Round 2
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113 STEP(G, a, b, c, d, GET(1), 0xf61e2562, 5)
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114 STEP(G, d, a, b, c, GET(6), 0xc040b340, 9)
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115 STEP(G, c, d, a, b, GET(11), 0x265e5a51, 14)
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116 STEP(G, b, c, d, a, GET(0), 0xe9b6c7aa, 20)
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117 STEP(G, a, b, c, d, GET(5), 0xd62f105d, 5)
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118 STEP(G, d, a, b, c, GET(10), 0x02441453, 9)
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119 STEP(G, c, d, a, b, GET(15), 0xd8a1e681, 14)
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120 STEP(G, b, c, d, a, GET(4), 0xe7d3fbc8, 20)
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parents:
diff changeset
121 STEP(G, a, b, c, d, GET(9), 0x21e1cde6, 5)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
122 STEP(G, d, a, b, c, GET(14), 0xc33707d6, 9)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
123 STEP(G, c, d, a, b, GET(3), 0xf4d50d87, 14)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
124 STEP(G, b, c, d, a, GET(8), 0x455a14ed, 20)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
125 STEP(G, a, b, c, d, GET(13), 0xa9e3e905, 5)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
126 STEP(G, d, a, b, c, GET(2), 0xfcefa3f8, 9)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
127 STEP(G, c, d, a, b, GET(7), 0x676f02d9, 14)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
128 STEP(G, b, c, d, a, GET(12), 0x8d2a4c8a, 20)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
129
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
130 // Round 3
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
131 STEP(H, a, b, c, d, GET(5), 0xfffa3942, 4)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
132 STEP(H, d, a, b, c, GET(8), 0x8771f681, 11)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
133 STEP(H, c, d, a, b, GET(11), 0x6d9d6122, 16)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
134 STEP(H, b, c, d, a, GET(14), 0xfde5380c, 23)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
135 STEP(H, a, b, c, d, GET(1), 0xa4beea44, 4)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
136 STEP(H, d, a, b, c, GET(4), 0x4bdecfa9, 11)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
137 STEP(H, c, d, a, b, GET(7), 0xf6bb4b60, 16)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
138 STEP(H, b, c, d, a, GET(10), 0xbebfbc70, 23)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
139 STEP(H, a, b, c, d, GET(13), 0x289b7ec6, 4)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
140 STEP(H, d, a, b, c, GET(0), 0xeaa127fa, 11)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
141 STEP(H, c, d, a, b, GET(3), 0xd4ef3085, 16)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
142 STEP(H, b, c, d, a, GET(6), 0x04881d05, 23)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
143 STEP(H, a, b, c, d, GET(9), 0xd9d4d039, 4)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
144 STEP(H, d, a, b, c, GET(12), 0xe6db99e5, 11)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
145 STEP(H, c, d, a, b, GET(15), 0x1fa27cf8, 16)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
146 STEP(H, b, c, d, a, GET(2), 0xc4ac5665, 23)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
147
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
148 // Round 4
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
149 STEP(I, a, b, c, d, GET(0), 0xf4292244, 6)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
150 STEP(I, d, a, b, c, GET(7), 0x432aff97, 10)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
151 STEP(I, c, d, a, b, GET(14), 0xab9423a7, 15)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
152 STEP(I, b, c, d, a, GET(5), 0xfc93a039, 21)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
153 STEP(I, a, b, c, d, GET(12), 0x655b59c3, 6)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
154 STEP(I, d, a, b, c, GET(3), 0x8f0ccc92, 10)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
155 STEP(I, c, d, a, b, GET(10), 0xffeff47d, 15)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
156 STEP(I, b, c, d, a, GET(1), 0x85845dd1, 21)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
157 STEP(I, a, b, c, d, GET(8), 0x6fa87e4f, 6)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
158 STEP(I, d, a, b, c, GET(15), 0xfe2ce6e0, 10)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
159 STEP(I, c, d, a, b, GET(6), 0xa3014314, 15)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
160 STEP(I, b, c, d, a, GET(13), 0x4e0811a1, 21)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
161 STEP(I, a, b, c, d, GET(4), 0xf7537e82, 6)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
162 STEP(I, d, a, b, c, GET(11), 0xbd3af235, 10)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
163 STEP(I, c, d, a, b, GET(2), 0x2ad7d2bb, 15)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
164 STEP(I, b, c, d, a, GET(9), 0xeb86d391, 21)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
165
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
166 a += saved_a;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
167 b += saved_b;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
168 c += saved_c;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
169 d += saved_d;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
170
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
171 ptr += 64;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
172 } while (Size -= 64);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
173
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
174 this->a = a;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
175 this->b = b;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
176 this->c = c;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
177 this->d = d;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
178
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
179 return ptr;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
180 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
181
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
182 MD5::MD5()
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
183 : a(0x67452301), b(0xefcdab89), c(0x98badcfe), d(0x10325476), hi(0), lo(0) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
184 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
185
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
186 /// Incrementally add the bytes in \p Data to the hash.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
187 void MD5::update(ArrayRef<uint8_t> Data) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
188 MD5_u32plus saved_lo;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
189 unsigned long used, free;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
190 const uint8_t *Ptr = Data.data();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
191 unsigned long Size = Data.size();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
192
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
193 saved_lo = lo;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
194 if ((lo = (saved_lo + Size) & 0x1fffffff) < saved_lo)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
195 hi++;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
196 hi += Size >> 29;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
197
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
198 used = saved_lo & 0x3f;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
199
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
200 if (used) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
201 free = 64 - used;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
202
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
203 if (Size < free) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
204 memcpy(&buffer[used], Ptr, Size);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
205 return;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
206 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
207
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
208 memcpy(&buffer[used], Ptr, free);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
209 Ptr = Ptr + free;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
210 Size -= free;
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
211 body(makeArrayRef(buffer, 64));
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
212 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
213
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
214 if (Size >= 64) {
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
215 Ptr = body(makeArrayRef(Ptr, Size & ~(unsigned long) 0x3f));
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
216 Size &= 0x3f;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
217 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
218
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
219 memcpy(buffer, Ptr, Size);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
220 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
221
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
222 /// Add the bytes in the StringRef \p Str to the hash.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
223 // Note that this isn't a string and so this won't include any trailing NULL
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
224 // bytes.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
225 void MD5::update(StringRef Str) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
226 ArrayRef<uint8_t> SVal((const uint8_t *)Str.data(), Str.size());
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
227 update(SVal);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
228 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
229
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
230 /// \brief Finish the hash and place the resulting hash into \p result.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
231 /// \param result is assumed to be a minimum of 16-bytes in size.
83
60c9769439b8 LLVM 3.7
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
232 void MD5::final(MD5Result &Result) {
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
233 unsigned long used, free;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
234
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
235 used = lo & 0x3f;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
236
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
237 buffer[used++] = 0x80;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
238
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
239 free = 64 - used;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
240
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
241 if (free < 8) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
242 memset(&buffer[used], 0, free);
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
243 body(makeArrayRef(buffer, 64));
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
244 used = 0;
95c75e76d11b LLVM 3.4
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diff changeset
245 free = 64;
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246 }
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247
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248 memset(&buffer[used], 0, free - 8);
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249
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250 lo <<= 3;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
251 buffer[56] = lo;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
252 buffer[57] = lo >> 8;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
253 buffer[58] = lo >> 16;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
254 buffer[59] = lo >> 24;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
255 buffer[60] = hi;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
256 buffer[61] = hi >> 8;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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257 buffer[62] = hi >> 16;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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258 buffer[63] = hi >> 24;
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259
77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents: 0
diff changeset
260 body(makeArrayRef(buffer, 64));
0
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261
83
60c9769439b8 LLVM 3.7
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
262 Result[0] = a;
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parents: 77
diff changeset
263 Result[1] = a >> 8;
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Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
264 Result[2] = a >> 16;
60c9769439b8 LLVM 3.7
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
265 Result[3] = a >> 24;
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Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
266 Result[4] = b;
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parents: 77
diff changeset
267 Result[5] = b >> 8;
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Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
268 Result[6] = b >> 16;
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Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
269 Result[7] = b >> 24;
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Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
270 Result[8] = c;
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Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
271 Result[9] = c >> 8;
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Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
272 Result[10] = c >> 16;
60c9769439b8 LLVM 3.7
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
273 Result[11] = c >> 24;
60c9769439b8 LLVM 3.7
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
274 Result[12] = d;
60c9769439b8 LLVM 3.7
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
275 Result[13] = d >> 8;
60c9769439b8 LLVM 3.7
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
276 Result[14] = d >> 16;
60c9769439b8 LLVM 3.7
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
277 Result[15] = d >> 24;
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
278 }
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parents:
diff changeset
279
83
60c9769439b8 LLVM 3.7
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
280 void MD5::stringifyResult(MD5Result &Result, SmallString<32> &Str) {
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
281 raw_svector_ostream Res(Str);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
282 for (int i = 0; i < 16; ++i)
83
60c9769439b8 LLVM 3.7
Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
parents: 77
diff changeset
283 Res << format("%.2x", Result[i]);
0
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
284 }
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
285
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
286 }