Mercurial > dropbear
annotate libtomcrypt/testprof/ecc_test.c @ 404:a588558bfc94
Fix potential null pointer dereference found by Klokwork
author | Matt Johnston <matt@ucc.asn.au> |
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date | Sat, 03 Feb 2007 09:58:14 +0000 |
parents | 1b9e69c058d2 |
children | 0cbe8f6dbf9e |
rev | line source |
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285
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1 #include <tomcrypt_test.h> |
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2 |
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3 #ifdef MECC |
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4 |
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5 static int sizes[] = { |
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6 #ifdef ECC192 |
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7 24, |
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8 #endif |
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9 #ifdef ECC224 |
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10 28, |
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11 #endif |
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12 #ifdef ECC256 |
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13 32, |
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14 #endif |
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15 #ifdef ECC384 |
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16 48, |
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17 #endif |
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18 #ifdef ECC512 |
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19 65 |
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20 #endif |
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21 }; |
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22 |
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23 int ecc_tests (void) |
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24 { |
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25 unsigned char buf[4][4096]; |
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26 unsigned long x, y, z, s; |
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27 int stat, stat2; |
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28 ecc_key usera, userb, pubKey, privKey; |
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29 |
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30 DO(ecc_test ()); |
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31 |
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32 for (s = 0; s < (int)(sizeof(sizes)/sizeof(sizes[0])); s++) { |
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33 /* make up two keys */ |
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34 DO(ecc_make_key (&yarrow_prng, find_prng ("yarrow"), sizes[s], &usera)); |
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35 DO(ecc_make_key (&yarrow_prng, find_prng ("yarrow"), sizes[s], &userb)); |
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36 |
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37 /* make the shared secret */ |
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38 x = 4096; |
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39 DO(ecc_shared_secret (&usera, &userb, buf[0], &x)); |
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40 |
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41 y = 4096; |
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42 DO(ecc_shared_secret (&userb, &usera, buf[1], &y)); |
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43 |
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44 if (y != x) { |
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45 fprintf(stderr, "ecc Shared keys are not same size."); |
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46 return 1; |
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47 } |
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48 |
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49 if (memcmp (buf[0], buf[1], x)) { |
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50 fprintf(stderr, "ecc Shared keys not same contents."); |
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51 return 1; |
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52 } |
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53 |
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54 /* now export userb */ |
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55 y = 4096; |
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56 DO(ecc_export (buf[1], &y, PK_PUBLIC, &userb)); |
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57 ecc_free (&userb); |
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58 |
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59 /* import and make the shared secret again */ |
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60 DO(ecc_import (buf[1], y, &userb)); |
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61 |
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62 z = 4096; |
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63 DO(ecc_shared_secret (&usera, &userb, buf[2], &z)); |
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64 |
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65 if (z != x) { |
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66 fprintf(stderr, "failed. Size don't match?"); |
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67 return 1; |
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68 } |
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69 if (memcmp (buf[0], buf[2], x)) { |
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70 fprintf(stderr, "Failed. Contents didn't match."); |
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71 return 1; |
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72 } |
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73 ecc_free (&usera); |
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74 ecc_free (&userb); |
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75 |
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76 /* test encrypt_key */ |
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77 DO(ecc_make_key (&yarrow_prng, find_prng ("yarrow"), sizes[s], &usera)); |
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78 |
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79 /* export key */ |
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80 x = sizeof(buf[0]); |
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81 DO(ecc_export(buf[0], &x, PK_PUBLIC, &usera)); |
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82 DO(ecc_import(buf[0], x, &pubKey)); |
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83 x = sizeof(buf[0]); |
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84 DO(ecc_export(buf[0], &x, PK_PRIVATE, &usera)); |
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85 DO(ecc_import(buf[0], x, &privKey)); |
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86 |
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87 for (x = 0; x < 32; x++) { |
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88 buf[0][x] = x; |
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89 } |
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90 y = sizeof (buf[1]); |
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91 DO(ecc_encrypt_key (buf[0], 32, buf[1], &y, &yarrow_prng, find_prng ("yarrow"), find_hash ("sha256"), &pubKey)); |
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92 zeromem (buf[0], sizeof (buf[0])); |
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93 x = sizeof (buf[0]); |
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94 DO(ecc_decrypt_key (buf[1], y, buf[0], &x, &privKey)); |
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95 if (x != 32) { |
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96 fprintf(stderr, "Failed (length)"); |
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97 return 1; |
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98 } |
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99 for (x = 0; x < 32; x++) { |
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100 if (buf[0][x] != x) { |
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101 fprintf(stderr, "Failed (contents)"); |
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102 return 1; |
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103 } |
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104 } |
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105 /* test sign_hash */ |
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106 for (x = 0; x < 16; x++) { |
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107 buf[0][x] = x; |
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108 } |
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109 x = sizeof (buf[1]); |
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110 DO(ecc_sign_hash (buf[0], 16, buf[1], &x, &yarrow_prng, find_prng ("yarrow"), &privKey)); |
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111 DO(ecc_verify_hash (buf[1], x, buf[0], 16, &stat, &pubKey)); |
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112 buf[0][0] ^= 1; |
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113 DO(ecc_verify_hash (buf[1], x, buf[0], 16, &stat2, &privKey)); |
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114 if (!(stat == 1 && stat2 == 0)) { |
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115 fprintf(stderr, "ecc_verify_hash failed %d, %d, ", stat, stat2); |
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116 return 1; |
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117 } |
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118 ecc_free (&usera); |
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119 ecc_free (&pubKey); |
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120 ecc_free (&privKey); |
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121 } |
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122 return 0; |
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123 } |
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124 |
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125 #else |
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126 |
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127 int ecc_tests(void) |
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128 { |
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129 fprintf(stderr, "NOP"); |
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130 return 0; |
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131 } |
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132 |
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133 #endif |
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134 |
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135 /* $Source: /cvs/libtom/libtomcrypt/testprof/ecc_test.c,v $ */ |
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136 /* $Revision: 1.9 $ */ |
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137 /* $Date: 2005/06/14 19:43:29 $ */ |