Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/include/mupdf/fitz/crypt.h @ 46:7ee69f120f19 default tip

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>>>>> tag v1.26.5+1 for changeset b74429b0f5c4
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 17:17:30 +0200
parents b50eed0cc0ef
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2
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1 // Copyright (C) 2004-2025 Artifex Software, Inc.
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2 //
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3 // This file is part of MuPDF.
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4 //
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5 // MuPDF is free software: you can redistribute it and/or modify it under the
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6 // terms of the GNU Affero General Public License as published by the Free
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7 // Software Foundation, either version 3 of the License, or (at your option)
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8 // any later version.
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9 //
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10 // MuPDF is distributed in the hope that it will be useful, but WITHOUT ANY
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11 // WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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12 // FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
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13 // details.
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14 //
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15 // You should have received a copy of the GNU Affero General Public License
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16 // along with MuPDF. If not, see <https://www.gnu.org/licenses/agpl-3.0.en.html>
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17 //
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18 // Alternative licensing terms are available from the licensor.
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19 // For commercial licensing, see <https://www.artifex.com/> or contact
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20 // Artifex Software, Inc., 39 Mesa Street, Suite 108A, San Francisco,
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21 // CA 94129, USA, for further information.
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22
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23 #ifndef MUPDF_FITZ_CRYPT_H
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24 #define MUPDF_FITZ_CRYPT_H
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26 #include "mupdf/fitz/system.h"
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28 /* md5 digests */
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29
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30 /**
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31 Structure definition is public to enable stack
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32 based allocation. Do not access the members directly.
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33 */
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34 typedef struct
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35 {
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36 uint32_t lo, hi;
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37 uint32_t a, b, c, d;
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38 unsigned char buffer[64];
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39 } fz_md5;
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41 /**
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42 MD5 initialization. Begins an MD5 operation, writing a new
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43 context.
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44
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45 Never throws an exception.
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46 */
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47 void fz_md5_init(fz_md5 *state);
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48
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49 /**
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50 MD5 block update operation. Continues an MD5 message-digest
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51 operation, processing another message block, and updating the
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52 context.
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53
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54 Never throws an exception.
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55 */
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56 void fz_md5_update(fz_md5 *state, const unsigned char *input, size_t inlen);
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58 /**
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59 MD5 block update operation. Continues an MD5 message-digest
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60 operation, processing an int64, and updating the context.
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61
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62 Never throws an exception.
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63 */
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64 void fz_md5_update_int64(fz_md5 *state, int64_t i);
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65
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66 /**
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67 MD5 finalization. Ends an MD5 message-digest operation, writing
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68 the message digest and zeroizing the context.
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70 Never throws an exception.
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71 */
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72 void fz_md5_final(fz_md5 *state, unsigned char digest[16]);
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73
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74 /* sha-256 digests */
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75
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76 /**
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77 Structure definition is public to enable stack
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78 based allocation. Do not access the members directly.
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79 */
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80 typedef struct
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81 {
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82 unsigned int state[8];
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83 unsigned int count[2];
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84 union {
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85 unsigned char u8[64];
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86 unsigned int u32[16];
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87 } buffer;
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88 } fz_sha256;
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89
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90 /**
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91 SHA256 initialization. Begins an SHA256 operation, initialising
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92 the supplied context.
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93
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94 Never throws an exception.
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95 */
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96 void fz_sha256_init(fz_sha256 *state);
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97
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98 /**
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99 SHA256 block update operation. Continues an SHA256 message-
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100 digest operation, processing another message block, and updating
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101 the context.
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102
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103 Never throws an exception.
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104 */
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parents:
diff changeset
105 void fz_sha256_update(fz_sha256 *state, const unsigned char *input, size_t inlen);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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106
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107 /**
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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diff changeset
108 MD5 finalization. Ends an MD5 message-digest operation, writing
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parents:
diff changeset
109 the message digest and zeroizing the context.
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110
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111 Never throws an exception.
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parents:
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112 */
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parents:
diff changeset
113 void fz_sha256_final(fz_sha256 *state, unsigned char digest[32]);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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114
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115 /* sha-512 digests */
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116
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117 /**
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118 Structure definition is public to enable stack
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119 based allocation. Do not access the members directly.
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120 */
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121 typedef struct
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122 {
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123 uint64_t state[8];
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124 unsigned int count[2];
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125 union {
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126 unsigned char u8[128];
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127 uint64_t u64[16];
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128 } buffer;
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129 } fz_sha512;
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130
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131 /**
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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diff changeset
132 SHA512 initialization. Begins an SHA512 operation, initialising
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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133 the supplied context.
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134
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135 Never throws an exception.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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136 */
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137 void fz_sha512_init(fz_sha512 *state);
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138
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139 /**
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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diff changeset
140 SHA512 block update operation. Continues an SHA512 message-
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
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diff changeset
141 digest operation, processing another message block, and updating
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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diff changeset
142 the context.
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143
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144 Never throws an exception.
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145 */
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Franz Glasner <fzglas.hg@dom66.de>
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146 void fz_sha512_update(fz_sha512 *state, const unsigned char *input, size_t inlen);
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147
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148 /**
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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diff changeset
149 SHA512 finalization. Ends an SHA512 message-digest operation,
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diff changeset
150 writing the message digest and zeroizing the context.
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151
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152 Never throws an exception.
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153 */
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154 void fz_sha512_final(fz_sha512 *state, unsigned char digest[64]);
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155
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156 /* sha-384 digests */
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157
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diff changeset
158 typedef fz_sha512 fz_sha384;
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159
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160 /**
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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diff changeset
161 SHA384 initialization. Begins an SHA384 operation, initialising
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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diff changeset
162 the supplied context.
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163
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164 Never throws an exception.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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165 */
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diff changeset
166 void fz_sha384_init(fz_sha384 *state);
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167
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parents:
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168 /**
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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diff changeset
169 SHA384 block update operation. Continues an SHA384 message-
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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diff changeset
170 digest operation, processing another message block, and updating
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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parents:
diff changeset
171 the context.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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172
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diff changeset
173 Never throws an exception.
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parents:
diff changeset
174 */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
175 void fz_sha384_update(fz_sha384 *state, const unsigned char *input, size_t inlen);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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176
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diff changeset
177 /**
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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diff changeset
178 SHA384 finalization. Ends an SHA384 message-digest operation,
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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parents:
diff changeset
179 writing the message digest and zeroizing the context.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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180
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diff changeset
181 Never throws an exception.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
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182 */
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
183 void fz_sha384_final(fz_sha384 *state, unsigned char digest[64]);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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parents:
diff changeset
184
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parents:
diff changeset
185 /* arc4 crypto */
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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186
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parents:
diff changeset
187 /**
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
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diff changeset
188 Structure definition is public to enable stack
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
189 based allocation. Do not access the members directly.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
190 */
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
191 typedef struct
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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parents:
diff changeset
192 {
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Franz Glasner <fzglas.hg@dom66.de>
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diff changeset
193 unsigned x;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
194 unsigned y;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
195 unsigned char state[256];
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
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diff changeset
196 } fz_arc4;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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197
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
198 /**
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
199 RC4 initialization. Begins an RC4 operation, writing a new
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
200 context.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
201
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
202 Never throws an exception.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
203 */
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
204 void fz_arc4_init(fz_arc4 *state, const unsigned char *key, size_t len);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
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diff changeset
205
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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206 /**
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207 RC4 block encrypt operation; encrypt src into dst (both of
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208 length len) updating the RC4 state as we go.
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209
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210 Never throws an exception.
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211 */
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212 void fz_arc4_encrypt(fz_arc4 *state, unsigned char *dest, const unsigned char *src, size_t len);
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213
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214 /**
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215 RC4 finalization. Zero the context.
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216
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217 Never throws an exception.
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218 */
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219 void fz_arc4_final(fz_arc4 *state);
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220
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221 /* AES block cipher implementation from XYSSL */
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222
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223 /**
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224 Structure definitions are public to enable stack
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225 based allocation. Do not access the members directly.
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226 */
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227 typedef struct
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228 {
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229 int nr; /* number of rounds */
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230 uint32_t *rk; /* AES round keys */
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231 uint32_t buf[68]; /* unaligned data */
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232 } fz_aes;
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233
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234 #define FZ_AES_DECRYPT 0
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235 #define FZ_AES_ENCRYPT 1
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236
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237 /**
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238 AES encryption initialization. Fills in the supplied context
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239 and prepares for encryption using the given key.
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240
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241 Returns non-zero for error (key size other than 128/192/256).
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242
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243 Never throws an exception.
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244 */
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245 int fz_aes_setkey_enc(fz_aes *ctx, const unsigned char *key, int keysize);
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246
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247 /**
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248 AES decryption initialization. Fills in the supplied context
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249 and prepares for decryption using the given key.
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250
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251 Returns non-zero for error (key size other than 128/192/256).
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252
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253 Never throws an exception.
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254 */
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255 int fz_aes_setkey_dec(fz_aes *ctx, const unsigned char *key, int keysize);
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256
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257 /**
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258 AES block processing. Encrypts or Decrypts (according to mode,
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259 which must match what was initially set up) length bytes (which
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260 must be a multiple of 16), using (and modifying) the insertion
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261 vector iv, reading from input, and writing to output.
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262
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263 Never throws an exception.
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264 */
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265 void fz_aes_crypt_cbc(fz_aes *ctx, int mode, size_t length,
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266 unsigned char iv[16],
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267 const unsigned char *input,
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268 unsigned char *output );
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269
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270 #endif