Mercurial > dropbear
annotate ltc_prng.c @ 1631:292f79307600
fix some gcc warnings (#73)
* tweak string size
fix gcc8 warnings
```
svr-agentfwd.c: In function 'bindagent':
svr-agentfwd.c:254:53: warning: '%s' directive output may be truncated writing up to 107 bytes into a region of size between 0 and 107 [-Wformat-truncation=]
snprintf(addr.sun_path, sizeof(addr.sun_path), "%s/%s", path, sockfile);
^~ ~~~~~~~~
svr-agentfwd.c:254:2: note: 'snprintf' output between 2 and 216 bytes into a destination of size 108
snprintf(addr.sun_path, sizeof(addr.sun_path), "%s/%s", path, sockfile);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
```
* cleanup signed/unsigned comparison
fix gcc8 warnings
```
scp.c: In function 'do_local_cmd':
scp.c:132:17: warning: comparison of integer expressions of different signedness: 'u_int' {aka 'unsigned int'} and 'int' [-Wsign-compare]
for (i = 0; i < a->num; i++)
^
scpmisc.c: In function 'addargs':
scpmisc.c:161:25: warning: comparison of integer expressions of different signedness: 'int' and 'u_int' {aka 'unsigned int'} [-Wsign-compare]
} else if (args->num+2 >= nalloc)
^~
scpmisc.c: In function 'replacearg':
scpmisc.c:183:12: warning: comparison of integer expressions of different signedness: 'u_int' {aka 'unsigned int'} and 'int' [-Wsign-compare]
if (which >= args->num)
^~
scpmisc.c: In function 'freeargs':
scpmisc.c:196:17: warning: comparison of integer expressions of different signedness: 'u_int' {aka 'unsigned int'} and 'int' [-Wsign-compare]
for (i = 0; i < args->num; i++)
^
```
see https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/misc.h.diff?r1=1.16&r2=1.17
author | François Perrad <francois.perrad@gadz.org> |
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date | Wed, 20 Mar 2019 15:25:15 +0100 |
parents | d68d61e7056a |
children |
rev | line source |
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1 /* Copied from libtomcrypt/src/prngs/sprng.c and modified to |
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2 * use Dropbear's genrandom(). */ |
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3 |
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4 /* LibTomCrypt, modular cryptographic library -- Tom St Denis |
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5 * |
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6 * LibTomCrypt is a library that provides various cryptographic |
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7 * algorithms in a highly modular and flexible manner. |
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8 * |
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9 * The library is free for all purposes without any express |
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10 * guarantee it works. |
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11 * |
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12 * Tom St Denis, [email protected], http://libtomcrypt.com |
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13 */ |
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14 #include "includes.h" |
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15 #include "dbrandom.h" |
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16 #include "ltc_prng.h" |
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17 |
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18 /** |
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19 @file sprng.c |
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20 Secure PRNG, Tom St Denis |
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21 */ |
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22 |
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23 /* A secure PRNG using the RNG functions. Basically this is a |
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24 * wrapper that allows you to use a secure RNG as a PRNG |
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25 * in the various other functions. |
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26 */ |
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27 |
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28 #if DROPBEAR_LTC_PRNG |
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29 |
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30 /** |
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31 Start the PRNG |
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32 @param prng [out] The PRNG state to initialize |
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33 @return CRYPT_OK if successful |
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34 */ |
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35 int dropbear_prng_start(prng_state* UNUSED(prng)) |
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36 { |
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37 return CRYPT_OK; |
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38 } |
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39 |
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40 /** |
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41 Add entropy to the PRNG state |
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42 @param in The data to add |
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43 @param inlen Length of the data to add |
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44 @param prng PRNG state to update |
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45 @return CRYPT_OK if successful |
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46 */ |
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47 int dropbear_prng_add_entropy(const unsigned char* UNUSED(in), unsigned long UNUSED(inlen), prng_state* UNUSED(prng)) |
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48 { |
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49 return CRYPT_OK; |
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50 } |
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51 |
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52 /** |
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53 Make the PRNG ready to read from |
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54 @param prng The PRNG to make active |
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55 @return CRYPT_OK if successful |
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56 */ |
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57 int dropbear_prng_ready(prng_state* UNUSED(prng)) |
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58 { |
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59 return CRYPT_OK; |
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60 } |
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61 |
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62 /** |
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63 Read from the PRNG |
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64 @param out Destination |
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65 @param outlen Length of output |
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66 @param prng The active PRNG to read from |
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67 @return Number of octets read |
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68 */ |
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69 unsigned long dropbear_prng_read(unsigned char* out, unsigned long outlen, prng_state* UNUSED(prng)) |
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70 { |
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71 LTC_ARGCHK(out != NULL); |
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72 genrandom(out, outlen); |
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73 return outlen; |
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74 } |
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75 |
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76 /** |
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77 Terminate the PRNG |
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78 @param prng The PRNG to terminate |
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79 @return CRYPT_OK if successful |
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80 */ |
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81 int dropbear_prng_done(prng_state* UNUSED(prng)) |
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82 { |
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83 return CRYPT_OK; |
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84 } |
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85 |
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86 /** |
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87 Export the PRNG state |
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88 @param out [out] Destination |
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89 @param outlen [in/out] Max size and resulting size of the state |
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90 @param prng The PRNG to export |
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91 @return CRYPT_OK if successful |
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92 */ |
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93 int dropbear_prng_export(unsigned char* UNUSED(out), unsigned long* outlen, prng_state* UNUSED(prng)) |
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94 { |
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95 LTC_ARGCHK(outlen != NULL); |
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96 |
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97 *outlen = 0; |
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98 return CRYPT_OK; |
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99 } |
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100 |
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101 /** |
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102 Import a PRNG state |
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103 @param in The PRNG state |
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104 @param inlen Size of the state |
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105 @param prng The PRNG to import |
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106 @return CRYPT_OK if successful |
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107 */ |
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108 int dropbear_prng_import(const unsigned char* UNUSED(in), unsigned long UNUSED(inlen), prng_state* UNUSED(prng)) |
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109 { |
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110 return CRYPT_OK; |
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111 } |
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112 |
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113 /** |
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114 PRNG self-test |
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115 @return CRYPT_OK if successful, CRYPT_NOP if self-testing has been disabled |
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116 */ |
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117 int dropbear_prng_test(void) |
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118 { |
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119 return CRYPT_OK; |
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120 } |
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121 |
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122 const struct ltc_prng_descriptor dropbear_prng_desc = |
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123 { |
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124 "dropbear_prng", 0, |
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125 dropbear_prng_start, |
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126 dropbear_prng_add_entropy, |
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127 dropbear_prng_ready, |
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128 dropbear_prng_read, |
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129 dropbear_prng_done, |
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130 dropbear_prng_export, |
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131 dropbear_prng_import, |
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132 dropbear_prng_test |
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133 }; |
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134 |
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135 |
857 | 136 #endif /* DROPBEAR_LTC_PRNG */ |