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annotate libtomcrypt/tests/prng_test.c @ 1902:4a6725ac957c

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Revert "Don't include sk keys at all in KEX list" This reverts git commit f972813ecdc7bb981d25b5a63638bd158f1c8e72. The sk algorithms need to remain in the sigalgs list so that they are included in the server-sig-algs ext-info message sent by the server. RFC8308 for server-sig-algs requires that all algorithms are listed (though OpenSSH client 8.4p1 tested doesn't require that)
author Matt Johnston <matt@ucc.asn.au>
date Thu, 24 Mar 2022 13:42:08 +0800
parents 6dba84798cd5
children
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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: $Format:%ai$ */