Mercurial > hg > nginx-quic
annotate src/core/ngx_sha1.c @ 6590:d375f4210e41
HTTP/2: fixed the "http request count is zero" alert.
When the stream is terminated the HEADERS frame can still wait in the output
queue. This frame can't be removed and must be sent to the client anyway,
since HTTP/2 uses stateful compression for headers. So in order to postpone
closing and freeing memory of such stream the special close stream handler
is set to the write event. After the HEADERS frame is sent the write event
is called and the stream will be finally closed.
Some events like receiving a RST_STREAM can trigger the read handler of such
stream in closing state and cause unexpected processing that can result in
another attempt to finalize the request. To prevent it the read handler is
now set to ngx_http_empty_handler.
Thanks to Amazon.
author | Valentin Bartenev <vbart@nginx.com> |
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date | Thu, 16 Jun 2016 20:55:11 +0300 |
parents | 1064ea81ed3a |
children | 9eefb38f0005 |
rev | line source |
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6586
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1 |
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2 /* |
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3 * Copyright (C) Maxim Dounin |
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4 * Copyright (C) Nginx, Inc. |
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5 * |
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6 * An internal SHA1 implementation. |
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7 * It is not expected to be optimal and is used only |
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8 * if no SHA1 implementation was found in system. |
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9 */ |
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10 |
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11 |
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12 #include <ngx_config.h> |
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13 #include <ngx_core.h> |
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14 #include <ngx_sha1.h> |
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15 |
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16 |
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17 #if !(NGX_HAVE_SHA1) |
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18 |
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19 static const u_char *ngx_sha1_body(ngx_sha1_t *ctx, const u_char *data, |
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20 size_t size); |
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21 |
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22 |
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23 void |
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24 ngx_sha1_init(ngx_sha1_t *ctx) |
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25 { |
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26 ctx->a = 0x67452301; |
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27 ctx->b = 0xefcdab89; |
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28 ctx->c = 0x98badcfe; |
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29 ctx->d = 0x10325476; |
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30 ctx->e = 0xc3d2e1f0; |
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31 |
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32 ctx->bytes = 0; |
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33 } |
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34 |
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35 |
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36 void |
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37 ngx_sha1_update(ngx_sha1_t *ctx, const void *data, size_t size) |
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38 { |
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39 size_t used, free; |
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40 |
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41 used = (size_t) (ctx->bytes & 0x3f); |
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42 ctx->bytes += size; |
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43 |
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44 if (used) { |
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45 free = 64 - used; |
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46 |
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47 if (size < free) { |
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48 ngx_memcpy(&ctx->buffer[used], data, size); |
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49 return; |
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50 } |
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51 |
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52 ngx_memcpy(&ctx->buffer[used], data, free); |
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53 data = (u_char *) data + free; |
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54 size -= free; |
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55 (void) ngx_sha1_body(ctx, ctx->buffer, 64); |
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56 } |
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57 |
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58 if (size >= 64) { |
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59 data = ngx_sha1_body(ctx, data, size & ~(size_t) 0x3f); |
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60 size &= 0x3f; |
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61 } |
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62 |
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63 ngx_memcpy(ctx->buffer, data, size); |
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64 } |
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65 |
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66 |
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67 void |
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68 ngx_sha1_final(u_char result[20], ngx_sha1_t *ctx) |
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69 { |
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70 size_t used, free; |
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71 |
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72 used = (size_t) (ctx->bytes & 0x3f); |
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73 |
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74 ctx->buffer[used++] = 0x80; |
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75 |
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76 free = 64 - used; |
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77 |
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78 if (free < 8) { |
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79 ngx_memzero(&ctx->buffer[used], free); |
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80 (void) ngx_sha1_body(ctx, ctx->buffer, 64); |
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81 used = 0; |
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82 free = 64; |
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83 } |
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84 |
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85 ngx_memzero(&ctx->buffer[used], free - 8); |
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86 |
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87 ctx->bytes <<= 3; |
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88 ctx->buffer[56] = (u_char) (ctx->bytes >> 56); |
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89 ctx->buffer[57] = (u_char) (ctx->bytes >> 48); |
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90 ctx->buffer[58] = (u_char) (ctx->bytes >> 40); |
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91 ctx->buffer[59] = (u_char) (ctx->bytes >> 32); |
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92 ctx->buffer[60] = (u_char) (ctx->bytes >> 24); |
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93 ctx->buffer[61] = (u_char) (ctx->bytes >> 16); |
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94 ctx->buffer[62] = (u_char) (ctx->bytes >> 8); |
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95 ctx->buffer[63] = (u_char) ctx->bytes; |
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96 |
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97 (void) ngx_sha1_body(ctx, ctx->buffer, 64); |
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98 |
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99 result[0] = (u_char) (ctx->a >> 24); |
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100 result[1] = (u_char) (ctx->a >> 16); |
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101 result[2] = (u_char) (ctx->a >> 8); |
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102 result[3] = (u_char) ctx->a; |
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103 result[4] = (u_char) (ctx->b >> 24); |
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104 result[5] = (u_char) (ctx->b >> 16); |
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105 result[6] = (u_char) (ctx->b >> 8); |
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106 result[7] = (u_char) ctx->b; |
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107 result[8] = (u_char) (ctx->c >> 24); |
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108 result[9] = (u_char) (ctx->c >> 16); |
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109 result[10] = (u_char) (ctx->c >> 8); |
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110 result[11] = (u_char) ctx->c; |
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111 result[12] = (u_char) (ctx->d >> 24); |
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112 result[13] = (u_char) (ctx->d >> 16); |
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113 result[14] = (u_char) (ctx->d >> 8); |
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114 result[15] = (u_char) ctx->d; |
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115 result[16] = (u_char) (ctx->e >> 24); |
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116 result[17] = (u_char) (ctx->e >> 16); |
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117 result[18] = (u_char) (ctx->e >> 8); |
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118 result[19] = (u_char) ctx->e; |
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119 |
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120 ngx_memzero(ctx, sizeof(*ctx)); |
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121 } |
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122 |
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123 |
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124 /* |
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125 * Helper functions. |
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126 */ |
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127 |
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128 #define ROTATE(bits, word) (((word) << (bits)) | ((word) >> (32 - (bits)))) |
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129 |
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130 #define F1(b, c, d) (((b) & (c)) | ((~(b)) & (d))) |
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131 #define F2(b, c, d) ((b) ^ (c) ^ (d)) |
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132 #define F3(b, c, d) (((b) & (c)) | ((b) & (d)) | ((c) & (d))) |
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133 |
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134 #define STEP(f, a, b, c, d, e, w, t) \ |
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135 temp = ROTATE(5, (a)) + f((b), (c), (d)) + (e) + (w) + (t); \ |
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136 (e) = (d); \ |
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137 (d) = (c); \ |
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138 (c) = ROTATE(30, (b)); \ |
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139 (b) = (a); \ |
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140 (a) = temp; |
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141 |
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142 |
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143 /* |
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144 * GET() reads 4 input bytes in big-endian byte order and returns |
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145 * them as uint32_t. |
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146 */ |
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147 |
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148 #define GET(n) \ |
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149 ((uint32_t) p[n * 4 + 3] | \ |
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150 ((uint32_t) p[n * 4 + 2] << 8) | \ |
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151 ((uint32_t) p[n * 4 + 1] << 16) | \ |
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152 ((uint32_t) p[n * 4] << 24)) |
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153 |
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154 |
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155 /* |
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156 * This processes one or more 64-byte data blocks, but does not update |
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157 * the bit counters. There are no alignment requirements. |
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158 */ |
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159 |
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160 static const u_char * |
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161 ngx_sha1_body(ngx_sha1_t *ctx, const u_char *data, size_t size) |
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162 { |
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163 uint32_t a, b, c, d, e, temp; |
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164 uint32_t saved_a, saved_b, saved_c, saved_d, saved_e; |
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165 uint32_t words[80]; |
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166 ngx_uint_t i; |
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167 const u_char *p; |
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168 |
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169 p = data; |
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170 |
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171 a = ctx->a; |
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172 b = ctx->b; |
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173 c = ctx->c; |
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174 d = ctx->d; |
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175 e = ctx->e; |
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176 |
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177 do { |
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178 saved_a = a; |
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179 saved_b = b; |
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180 saved_c = c; |
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181 saved_d = d; |
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182 saved_e = e; |
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183 |
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184 /* Load data block into the words array */ |
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185 |
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186 for (i = 0; i < 16; i++) { |
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187 words[i] = GET(i); |
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188 } |
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189 |
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190 for (i = 16; i < 80; i++) { |
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191 words[i] = ROTATE(1, words[i - 3] ^ words[i - 8] ^ words[i - 14] |
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An internal SHA1 implementation.
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192 ^ words[i - 16]); |
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193 } |
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194 |
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195 /* Transformations */ |
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196 |
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197 STEP(F1, a, b, c, d, e, words[0], 0x5a827999); |
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198 STEP(F1, a, b, c, d, e, words[1], 0x5a827999); |
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199 STEP(F1, a, b, c, d, e, words[2], 0x5a827999); |
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200 STEP(F1, a, b, c, d, e, words[3], 0x5a827999); |
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201 STEP(F1, a, b, c, d, e, words[4], 0x5a827999); |
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202 STEP(F1, a, b, c, d, e, words[5], 0x5a827999); |
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203 STEP(F1, a, b, c, d, e, words[6], 0x5a827999); |
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204 STEP(F1, a, b, c, d, e, words[7], 0x5a827999); |
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205 STEP(F1, a, b, c, d, e, words[8], 0x5a827999); |
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206 STEP(F1, a, b, c, d, e, words[9], 0x5a827999); |
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207 STEP(F1, a, b, c, d, e, words[10], 0x5a827999); |
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208 STEP(F1, a, b, c, d, e, words[11], 0x5a827999); |
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209 STEP(F1, a, b, c, d, e, words[12], 0x5a827999); |
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210 STEP(F1, a, b, c, d, e, words[13], 0x5a827999); |
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211 STEP(F1, a, b, c, d, e, words[14], 0x5a827999); |
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212 STEP(F1, a, b, c, d, e, words[15], 0x5a827999); |
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213 STEP(F1, a, b, c, d, e, words[16], 0x5a827999); |
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214 STEP(F1, a, b, c, d, e, words[17], 0x5a827999); |
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215 STEP(F1, a, b, c, d, e, words[18], 0x5a827999); |
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216 STEP(F1, a, b, c, d, e, words[19], 0x5a827999); |
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An internal SHA1 implementation.
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217 |
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218 STEP(F2, a, b, c, d, e, words[20], 0x6ed9eba1); |
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219 STEP(F2, a, b, c, d, e, words[21], 0x6ed9eba1); |
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220 STEP(F2, a, b, c, d, e, words[22], 0x6ed9eba1); |
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An internal SHA1 implementation.
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221 STEP(F2, a, b, c, d, e, words[23], 0x6ed9eba1); |
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An internal SHA1 implementation.
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222 STEP(F2, a, b, c, d, e, words[24], 0x6ed9eba1); |
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An internal SHA1 implementation.
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223 STEP(F2, a, b, c, d, e, words[25], 0x6ed9eba1); |
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An internal SHA1 implementation.
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224 STEP(F2, a, b, c, d, e, words[26], 0x6ed9eba1); |
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An internal SHA1 implementation.
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225 STEP(F2, a, b, c, d, e, words[27], 0x6ed9eba1); |
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An internal SHA1 implementation.
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226 STEP(F2, a, b, c, d, e, words[28], 0x6ed9eba1); |
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An internal SHA1 implementation.
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227 STEP(F2, a, b, c, d, e, words[29], 0x6ed9eba1); |
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An internal SHA1 implementation.
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228 STEP(F2, a, b, c, d, e, words[30], 0x6ed9eba1); |
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An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
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229 STEP(F2, a, b, c, d, e, words[31], 0x6ed9eba1); |
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An internal SHA1 implementation.
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230 STEP(F2, a, b, c, d, e, words[32], 0x6ed9eba1); |
1064ea81ed3a
An internal SHA1 implementation.
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231 STEP(F2, a, b, c, d, e, words[33], 0x6ed9eba1); |
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An internal SHA1 implementation.
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232 STEP(F2, a, b, c, d, e, words[34], 0x6ed9eba1); |
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An internal SHA1 implementation.
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233 STEP(F2, a, b, c, d, e, words[35], 0x6ed9eba1); |
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An internal SHA1 implementation.
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234 STEP(F2, a, b, c, d, e, words[36], 0x6ed9eba1); |
1064ea81ed3a
An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
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235 STEP(F2, a, b, c, d, e, words[37], 0x6ed9eba1); |
1064ea81ed3a
An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
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236 STEP(F2, a, b, c, d, e, words[38], 0x6ed9eba1); |
1064ea81ed3a
An internal SHA1 implementation.
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237 STEP(F2, a, b, c, d, e, words[39], 0x6ed9eba1); |
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An internal SHA1 implementation.
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238 |
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An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
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239 STEP(F3, a, b, c, d, e, words[40], 0x8f1bbcdc); |
1064ea81ed3a
An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
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240 STEP(F3, a, b, c, d, e, words[41], 0x8f1bbcdc); |
1064ea81ed3a
An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
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241 STEP(F3, a, b, c, d, e, words[42], 0x8f1bbcdc); |
1064ea81ed3a
An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
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242 STEP(F3, a, b, c, d, e, words[43], 0x8f1bbcdc); |
1064ea81ed3a
An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
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243 STEP(F3, a, b, c, d, e, words[44], 0x8f1bbcdc); |
1064ea81ed3a
An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
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244 STEP(F3, a, b, c, d, e, words[45], 0x8f1bbcdc); |
1064ea81ed3a
An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
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|
245 STEP(F3, a, b, c, d, e, words[46], 0x8f1bbcdc); |
1064ea81ed3a
An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
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246 STEP(F3, a, b, c, d, e, words[47], 0x8f1bbcdc); |
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247 STEP(F3, a, b, c, d, e, words[48], 0x8f1bbcdc); |
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248 STEP(F3, a, b, c, d, e, words[49], 0x8f1bbcdc); |
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249 STEP(F3, a, b, c, d, e, words[50], 0x8f1bbcdc); |
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250 STEP(F3, a, b, c, d, e, words[51], 0x8f1bbcdc); |
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251 STEP(F3, a, b, c, d, e, words[52], 0x8f1bbcdc); |
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252 STEP(F3, a, b, c, d, e, words[53], 0x8f1bbcdc); |
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253 STEP(F3, a, b, c, d, e, words[54], 0x8f1bbcdc); |
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254 STEP(F3, a, b, c, d, e, words[55], 0x8f1bbcdc); |
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255 STEP(F3, a, b, c, d, e, words[56], 0x8f1bbcdc); |
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256 STEP(F3, a, b, c, d, e, words[57], 0x8f1bbcdc); |
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257 STEP(F3, a, b, c, d, e, words[58], 0x8f1bbcdc); |
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258 STEP(F3, a, b, c, d, e, words[59], 0x8f1bbcdc); |
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259 |
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260 STEP(F2, a, b, c, d, e, words[60], 0xca62c1d6); |
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261 STEP(F2, a, b, c, d, e, words[61], 0xca62c1d6); |
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262 STEP(F2, a, b, c, d, e, words[62], 0xca62c1d6); |
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263 STEP(F2, a, b, c, d, e, words[63], 0xca62c1d6); |
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264 STEP(F2, a, b, c, d, e, words[64], 0xca62c1d6); |
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265 STEP(F2, a, b, c, d, e, words[65], 0xca62c1d6); |
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266 STEP(F2, a, b, c, d, e, words[66], 0xca62c1d6); |
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267 STEP(F2, a, b, c, d, e, words[67], 0xca62c1d6); |
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268 STEP(F2, a, b, c, d, e, words[68], 0xca62c1d6); |
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269 STEP(F2, a, b, c, d, e, words[69], 0xca62c1d6); |
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270 STEP(F2, a, b, c, d, e, words[70], 0xca62c1d6); |
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271 STEP(F2, a, b, c, d, e, words[71], 0xca62c1d6); |
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272 STEP(F2, a, b, c, d, e, words[72], 0xca62c1d6); |
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273 STEP(F2, a, b, c, d, e, words[73], 0xca62c1d6); |
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274 STEP(F2, a, b, c, d, e, words[74], 0xca62c1d6); |
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275 STEP(F2, a, b, c, d, e, words[75], 0xca62c1d6); |
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276 STEP(F2, a, b, c, d, e, words[76], 0xca62c1d6); |
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An internal SHA1 implementation.
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277 STEP(F2, a, b, c, d, e, words[77], 0xca62c1d6); |
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An internal SHA1 implementation.
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278 STEP(F2, a, b, c, d, e, words[78], 0xca62c1d6); |
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An internal SHA1 implementation.
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279 STEP(F2, a, b, c, d, e, words[79], 0xca62c1d6); |
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An internal SHA1 implementation.
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280 |
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281 a += saved_a; |
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282 b += saved_b; |
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283 c += saved_c; |
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284 d += saved_d; |
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285 e += saved_e; |
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286 |
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287 p += 64; |
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288 |
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289 } while (size -= 64); |
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290 |
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291 ctx->a = a; |
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292 ctx->b = b; |
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293 ctx->c = c; |
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294 ctx->d = d; |
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295 ctx->e = e; |
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296 |
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297 return p; |
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298 } |
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299 |
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300 #endif |