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annotate libtomcrypt/tests/prng_test.c @ 1659:d32bcb5c557d

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Add Ed25519 support (#91) * Add support for Ed25519 as a public key type Ed25519 is a elliptic curve signature scheme that offers better security than ECDSA and DSA and good performance. It may be used for both user and host keys. OpenSSH key import and fuzzer are not supported yet. Initially inspired by Peter Szabo. * Add curve25519 and ed25519 fuzzers * Add import and export of Ed25519 keys
author Vladislav Grishenko <themiron@users.noreply.github.com>
date Wed, 11 Mar 2020 21:09:45 +0500
parents 6dba84798cd5
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1471
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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 #include <tomcrypt_test.h>
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10
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11 #ifdef LTC_PRNG_ENABLE_LTC_RNG
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12
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13 static unsigned long my_test_rng_read;
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14
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15 static unsigned long my_test_rng(unsigned char *buf, unsigned long len,
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16 void (*callback)(void))
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17 {
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18 unsigned long n;
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19 LTC_UNUSED_PARAM(callback);
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20 for (n = 0; n < len; ++n) {
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21 buf[n] = 4;
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22 }
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23 my_test_rng_read += n;
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24 return n;
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25 }
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26
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27 #endif
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28
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29 int prng_test(void)
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30 {
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31 int err = CRYPT_NOP;
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32 int x;
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33 unsigned char buf[4096] = { 0 };
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34 unsigned long n, one;
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35 prng_state nprng;
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36
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37 #ifdef LTC_PRNG_ENABLE_LTC_RNG
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38 unsigned long before;
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39
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40 unsigned long (*previous)(unsigned char *, unsigned long , void (*)(void)) = ltc_rng;
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41 ltc_rng = my_test_rng;
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42
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43 before = my_test_rng_read;
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44
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45 if ((err = rng_make_prng(128, find_prng("yarrow"), &yarrow_prng, NULL)) != CRYPT_OK) {
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46 fprintf(stderr, "rng_make_prng with 'my_test_rng' failed: %s\n", error_to_string(err));
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47 exit(EXIT_FAILURE);
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48 }
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49
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50 if (before == my_test_rng_read) {
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51 fprintf(stderr, "somehow there was no read from the ltc_rng! %lu == %lu\n", before, my_test_rng_read);
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52 exit(EXIT_FAILURE);
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53 }
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54
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55 ltc_rng = previous;
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56 #endif
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57
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58 /* test prngs (test, import/export) */
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59 for (x = 0; prng_descriptor[x].name != NULL; x++) {
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60 if(strstr(prng_descriptor[x].name, "no_prng") == prng_descriptor[x].name) continue;
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61 err = CRYPT_OK;
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62 DOX(prng_descriptor[x].test(), prng_descriptor[x].name);
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63 DOX(prng_descriptor[x].start(&nprng), prng_descriptor[x].name);
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64 DOX(prng_descriptor[x].add_entropy((unsigned char *)"helloworld12", 12, &nprng), prng_descriptor[x].name);
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65 DOX(prng_descriptor[x].ready(&nprng), prng_descriptor[x].name);
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66 n = sizeof(buf);
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67 if (strcmp(prng_descriptor[x].name, "sprng")) {
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68 one = 1;
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69 if (prng_descriptor[x].pexport(buf, &one, &nprng) != CRYPT_BUFFER_OVERFLOW) {
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70 fprintf(stderr, "Error testing pexport with a short buffer (%s)\n", prng_descriptor[x].name);
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71 return CRYPT_ERROR;
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72 }
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73 }
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74 DOX(prng_descriptor[x].pexport(buf, &n, &nprng), prng_descriptor[x].name);
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75 prng_descriptor[x].done(&nprng);
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76 DOX(prng_descriptor[x].pimport(buf, n, &nprng), prng_descriptor[x].name);
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77 DOX(prng_descriptor[x].pimport(buf, 4096, &nprng), prng_descriptor[x].name); /* try to import larger data */
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78 DOX(prng_descriptor[x].ready(&nprng), prng_descriptor[x].name);
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79 if (prng_descriptor[x].read(buf, 100, &nprng) != 100) {
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80 fprintf(stderr, "Error reading from imported PRNG (%s)!\n", prng_descriptor[x].name);
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81 return CRYPT_ERROR;
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82 }
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83 prng_descriptor[x].done(&nprng);
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84 }
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85 return err;
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86 }
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87
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88 /* ref: $Format:%D$ */
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89 /* git commit: $Format:%H$ */
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90 /* commit time: $Format:%ai$ */