Mercurial > dropbear

annotate libtomcrypt/tests/pkcs_1_emsa_test.c @ 1715:3974f087d9c0

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Disallow leading lines before the ident for server (#102) Per RFC4253 4.2 clients must be able to process other lines of data before the version string, server behavior is not defined neither with MUST/SHOULD nor with MAY. If server process up to 50 lines too - it may cause too long hanging session with invalid/evil client that consume host resources and potentially may lead to DDoS on poor embedded boxes. Let's require first line from client to be version string and fail early if it's not - matches both RFC and real OpenSSH behavior.
author Vladislav Grishenko <themiron@users.noreply.github.com>
date Mon, 15 Jun 2020 18:22:18 +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 #if defined(LTC_PKCS_1) && defined(LTC_TEST_MPI)
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12
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13 #include "../notes/rsa-testvectors/pkcs1v15sign-vectors.c"
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14
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15
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16
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17 int pkcs_1_emsa_test(void)
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18 {
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19 int hash_idx = find_hash("sha1");
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20 unsigned int i;
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21 unsigned int j;
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22
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23 DO(hash_is_valid(hash_idx));
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24
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25 for (i = 0; i < sizeof(testcases_emsa)/sizeof(testcases_emsa[0]); ++i) {
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26 testcase_t* t = &testcases_emsa[i];
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27 rsa_key k, *key = &k;
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28 DOX(mp_init_multi(&key->e, &key->d, &key->N, &key->dQ,
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29 &key->dP, &key->qP, &key->p, &key->q, NULL), t->name);
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30
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31 DOX(mp_read_unsigned_bin(key->e, t->rsa.e, t->rsa.e_l), t->name);
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32 DOX(mp_read_unsigned_bin(key->d, t->rsa.d, t->rsa.d_l), t->name);
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33 DOX(mp_read_unsigned_bin(key->N, t->rsa.n, t->rsa.n_l), t->name);
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34 DOX(mp_read_unsigned_bin(key->dQ, t->rsa.dQ, t->rsa.dQ_l), t->name);
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35 DOX(mp_read_unsigned_bin(key->dP, t->rsa.dP, t->rsa.dP_l), t->name);
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36 DOX(mp_read_unsigned_bin(key->qP, t->rsa.qInv, t->rsa.qInv_l), t->name);
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37 DOX(mp_read_unsigned_bin(key->q, t->rsa.q, t->rsa.q_l), t->name);
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38 DOX(mp_read_unsigned_bin(key->p, t->rsa.p, t->rsa.p_l), t->name);
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39 key->type = PK_PRIVATE;
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40
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41 for (j = 0; j < sizeof(t->data)/sizeof(t->data[0]); ++j) {
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42 rsaData_t* s = &t->data[j];
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43 unsigned char buf[20], obuf[256];
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44 unsigned long buflen = sizeof(buf), obuflen = sizeof(obuf);
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45 int stat;
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46 DOX(hash_memory(hash_idx, s->o1, s->o1_l, buf, &buflen), s->name);
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47 DOX(rsa_sign_hash_ex(buf, buflen, obuf, &obuflen, LTC_PKCS_1_V1_5, NULL, -1, hash_idx, 0, key), s->name);
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48 DOX(obuflen == (unsigned long)s->o2_l?CRYPT_OK:CRYPT_FAIL_TESTVECTOR, s->name);
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49 DOX(memcmp(s->o2, obuf, s->o2_l)==0?CRYPT_OK:CRYPT_FAIL_TESTVECTOR, s->name);
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50 DOX(rsa_verify_hash_ex(obuf, obuflen, buf, buflen, LTC_PKCS_1_V1_5, hash_idx, 0, &stat, key), s->name);
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51 DOX(stat == 1?CRYPT_OK:CRYPT_FAIL_TESTVECTOR, s->name);
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52 } /* for */
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53
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54 mp_clear_multi(key->d, key->e, key->N, key->dQ, key->dP, key->qP, key->p, key->q, NULL);
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55 } /* for */
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56
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57 return 0;
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58 }
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59
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60 #else
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61
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62 int pkcs_1_emsa_test(void)
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63 {
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64 return CRYPT_NOP;
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65 }
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66
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67 #endif
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68
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69
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70 /* ref: $Format:%D$ */
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71 /* git commit: $Format:%H$ */
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72 /* commit time: $Format:%ai$ */