Mercurial > dropbear
annotate libtomcrypt/src/headers/tomcrypt_prng.h @ 1758:1365661f6be6
Disable stderr output for fuzzer by default
author | Matt Johnston <matt@ucc.asn.au> |
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date | Sat, 24 Oct 2020 22:40:08 +0800 |
parents | 6dba84798cd5 |
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rev | line source |
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1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis |
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2 * |
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3 * LibTomCrypt is a library that provides various cryptographic |
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4 * algorithms in a highly modular and flexible manner. |
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5 * |
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6 * The library is free for all purposes without any express |
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7 * guarantee it works. |
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8 */ |
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9 |
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10 /* ---- PRNG Stuff ---- */ |
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11 #ifdef LTC_YARROW |
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12 struct yarrow_prng { |
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13 int cipher, hash; |
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14 unsigned char pool[MAXBLOCKSIZE]; |
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15 symmetric_CTR ctr; |
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16 }; |
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17 #endif |
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18 |
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19 #ifdef LTC_RC4 |
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20 struct rc4_prng { |
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21 rc4_state s; |
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22 }; |
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23 #endif |
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24 |
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25 #ifdef LTC_CHACHA20_PRNG |
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26 struct chacha20_prng { |
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27 chacha_state s; /* chacha state */ |
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28 unsigned char ent[40]; /* entropy buffer */ |
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29 unsigned long idx; /* entropy counter */ |
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30 }; |
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31 #endif |
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32 |
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33 #ifdef LTC_FORTUNA |
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34 struct fortuna_prng { |
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35 hash_state pool[LTC_FORTUNA_POOLS]; /* the pools */ |
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36 |
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37 symmetric_key skey; |
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38 |
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39 unsigned char K[32], /* the current key */ |
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40 IV[16]; /* IV for CTR mode */ |
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41 |
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42 unsigned long pool_idx, /* current pool we will add to */ |
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43 pool0_len, /* length of 0'th pool */ |
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44 wd; |
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45 |
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46 ulong64 reset_cnt; /* number of times we have reset */ |
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47 }; |
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48 #endif |
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49 |
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50 #ifdef LTC_SOBER128 |
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51 struct sober128_prng { |
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52 sober128_state s; /* sober128 state */ |
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53 unsigned char ent[40]; /* entropy buffer */ |
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54 unsigned long idx; /* entropy counter */ |
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55 }; |
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56 #endif |
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57 |
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58 typedef struct { |
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59 union { |
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60 char dummy[1]; |
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61 #ifdef LTC_YARROW |
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62 struct yarrow_prng yarrow; |
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63 #endif |
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64 #ifdef LTC_RC4 |
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65 struct rc4_prng rc4; |
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66 #endif |
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67 #ifdef LTC_CHACHA20_PRNG |
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68 struct chacha20_prng chacha; |
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69 #endif |
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70 #ifdef LTC_FORTUNA |
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71 struct fortuna_prng fortuna; |
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72 #endif |
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73 #ifdef LTC_SOBER128 |
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74 struct sober128_prng sober128; |
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75 #endif |
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76 }; |
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77 short ready; /* ready flag 0-1 */ |
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78 LTC_MUTEX_TYPE(lock) /* lock */ |
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79 } prng_state; |
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80 |
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81 /** PRNG descriptor */ |
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82 extern struct ltc_prng_descriptor { |
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83 /** Name of the PRNG */ |
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84 const char *name; |
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85 /** size in bytes of exported state */ |
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86 int export_size; |
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87 /** Start a PRNG state |
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88 @param prng [out] The state to initialize |
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89 @return CRYPT_OK if successful |
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90 */ |
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91 int (*start)(prng_state *prng); |
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92 /** Add entropy to the PRNG |
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93 @param in The entropy |
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94 @param inlen Length of the entropy (octets)\ |
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95 @param prng The PRNG state |
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96 @return CRYPT_OK if successful |
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97 */ |
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98 int (*add_entropy)(const unsigned char *in, unsigned long inlen, prng_state *prng); |
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99 /** Ready a PRNG state to read from |
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100 @param prng The PRNG state to ready |
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101 @return CRYPT_OK if successful |
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102 */ |
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103 int (*ready)(prng_state *prng); |
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104 /** Read from the PRNG |
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105 @param out [out] Where to store the data |
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106 @param outlen Length of data desired (octets) |
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107 @param prng The PRNG state to read from |
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108 @return Number of octets read |
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109 */ |
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110 unsigned long (*read)(unsigned char *out, unsigned long outlen, prng_state *prng); |
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111 /** Terminate a PRNG state |
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112 @param prng The PRNG state to terminate |
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113 @return CRYPT_OK if successful |
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114 */ |
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115 int (*done)(prng_state *prng); |
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116 /** Export a PRNG state |
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117 @param out [out] The destination for the state |
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118 @param outlen [in/out] The max size and resulting size of the PRNG state |
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119 @param prng The PRNG to export |
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120 @return CRYPT_OK if successful |
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121 */ |
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122 int (*pexport)(unsigned char *out, unsigned long *outlen, prng_state *prng); |
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123 /** Import a PRNG state |
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124 @param in The data to import |
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125 @param inlen The length of the data to import (octets) |
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126 @param prng The PRNG to initialize/import |
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127 @return CRYPT_OK if successful |
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128 */ |
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129 int (*pimport)(const unsigned char *in, unsigned long inlen, prng_state *prng); |
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130 /** Self-test the PRNG |
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131 @return CRYPT_OK if successful, CRYPT_NOP if self-testing has been disabled |
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132 */ |
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133 int (*test)(void); |
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134 } prng_descriptor[]; |
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135 |
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136 #ifdef LTC_YARROW |
285
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137 int yarrow_start(prng_state *prng); |
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138 int yarrow_add_entropy(const unsigned char *in, unsigned long inlen, prng_state *prng); |
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139 int yarrow_ready(prng_state *prng); |
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140 unsigned long yarrow_read(unsigned char *out, unsigned long outlen, prng_state *prng); |
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141 int yarrow_done(prng_state *prng); |
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142 int yarrow_export(unsigned char *out, unsigned long *outlen, prng_state *prng); |
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143 int yarrow_import(const unsigned char *in, unsigned long inlen, prng_state *prng); |
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144 int yarrow_test(void); |
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145 extern const struct ltc_prng_descriptor yarrow_desc; |
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146 #endif |
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147 |
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148 #ifdef LTC_FORTUNA |
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149 int fortuna_start(prng_state *prng); |
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150 int fortuna_add_entropy(const unsigned char *in, unsigned long inlen, prng_state *prng); |
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151 int fortuna_ready(prng_state *prng); |
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152 unsigned long fortuna_read(unsigned char *out, unsigned long outlen, prng_state *prng); |
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153 int fortuna_done(prng_state *prng); |
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154 int fortuna_export(unsigned char *out, unsigned long *outlen, prng_state *prng); |
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155 int fortuna_import(const unsigned char *in, unsigned long inlen, prng_state *prng); |
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156 int fortuna_test(void); |
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157 extern const struct ltc_prng_descriptor fortuna_desc; |
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158 #endif |
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159 |
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160 #ifdef LTC_RC4 |
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161 int rc4_start(prng_state *prng); |
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162 int rc4_add_entropy(const unsigned char *in, unsigned long inlen, prng_state *prng); |
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163 int rc4_ready(prng_state *prng); |
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164 unsigned long rc4_read(unsigned char *out, unsigned long outlen, prng_state *prng); |
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165 int rc4_done(prng_state *prng); |
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166 int rc4_export(unsigned char *out, unsigned long *outlen, prng_state *prng); |
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167 int rc4_import(const unsigned char *in, unsigned long inlen, prng_state *prng); |
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168 int rc4_test(void); |
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169 extern const struct ltc_prng_descriptor rc4_desc; |
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170 #endif |
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171 |
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172 #ifdef LTC_CHACHA20_PRNG |
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173 int chacha20_prng_start(prng_state *prng); |
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174 int chacha20_prng_add_entropy(const unsigned char *in, unsigned long inlen, prng_state *prng); |
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175 int chacha20_prng_ready(prng_state *prng); |
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176 unsigned long chacha20_prng_read(unsigned char *out, unsigned long outlen, prng_state *prng); |
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177 int chacha20_prng_done(prng_state *prng); |
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178 int chacha20_prng_export(unsigned char *out, unsigned long *outlen, prng_state *prng); |
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179 int chacha20_prng_import(const unsigned char *in, unsigned long inlen, prng_state *prng); |
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180 int chacha20_prng_test(void); |
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181 extern const struct ltc_prng_descriptor chacha20_prng_desc; |
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182 #endif |
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183 |
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184 #ifdef LTC_SPRNG |
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185 int sprng_start(prng_state *prng); |
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186 int sprng_add_entropy(const unsigned char *in, unsigned long inlen, prng_state *prng); |
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187 int sprng_ready(prng_state *prng); |
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188 unsigned long sprng_read(unsigned char *out, unsigned long outlen, prng_state *prng); |
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189 int sprng_done(prng_state *prng); |
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190 int sprng_export(unsigned char *out, unsigned long *outlen, prng_state *prng); |
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191 int sprng_import(const unsigned char *in, unsigned long inlen, prng_state *prng); |
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192 int sprng_test(void); |
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193 extern const struct ltc_prng_descriptor sprng_desc; |
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194 #endif |
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195 |
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196 #ifdef LTC_SOBER128 |
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197 int sober128_start(prng_state *prng); |
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198 int sober128_add_entropy(const unsigned char *in, unsigned long inlen, prng_state *prng); |
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199 int sober128_ready(prng_state *prng); |
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200 unsigned long sober128_read(unsigned char *out, unsigned long outlen, prng_state *prng); |
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201 int sober128_done(prng_state *prng); |
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202 int sober128_export(unsigned char *out, unsigned long *outlen, prng_state *prng); |
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203 int sober128_import(const unsigned char *in, unsigned long inlen, prng_state *prng); |
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204 int sober128_test(void); |
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205 extern const struct ltc_prng_descriptor sober128_desc; |
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206 #endif |
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207 |
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208 int find_prng(const char *name); |
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209 int register_prng(const struct ltc_prng_descriptor *prng); |
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210 int unregister_prng(const struct ltc_prng_descriptor *prng); |
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211 int register_all_prngs(void); |
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212 int prng_is_valid(int idx); |
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213 LTC_MUTEX_PROTO(ltc_prng_mutex) |
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214 |
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215 /* Slow RNG you **might** be able to use to seed a PRNG with. Be careful as this |
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216 * might not work on all platforms as planned |
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217 */ |
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218 unsigned long rng_get_bytes(unsigned char *out, |
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219 unsigned long outlen, |
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220 void (*callback)(void)); |
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221 |
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222 int rng_make_prng(int bits, int wprng, prng_state *prng, void (*callback)(void)); |
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223 |
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224 #ifdef LTC_PRNG_ENABLE_LTC_RNG |
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225 extern unsigned long (*ltc_rng)(unsigned char *out, unsigned long outlen, |
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226 void (*callback)(void)); |
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227 #endif |
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228 |
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229 |
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230 /* ref: $Format:%D$ */ |
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231 /* git commit: $Format:%H$ */ |
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232 /* commit time: $Format:%ai$ */ |