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annotate libtomcrypt/tests/store_test.c @ 1861:2b3a8026a6ce

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Add re-exec for server This allows ASLR to re-randomize the address space for every connection, preventing some vulnerabilities from being exploitable by repeated probing. Overhead (memory and time) is yet to be confirmed. At present this is only enabled on Linux. Other BSD platforms with fexecve() would probably also work though have not been tested.
author Matt Johnston <matt@ucc.asn.au>
date Sun, 30 Jan 2022 10:14:56 +0800
parents 6dba84798cd5
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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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 /* Test store/load macros with offsets */
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12 int store_test(void)
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13 {
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14 unsigned char buf[256];
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15 int y;
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16 ulong32 L, L1;
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17 ulong64 LL, LL1;
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18 #ifdef LTC_FAST
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19 int x, z;
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20 #endif
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21
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22 for (y = 0; y < 4; y++) {
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23 L = 0x12345678UL;
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24 L1 = 0;
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25 STORE32L(L, buf + y);
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26 LOAD32L(L1, buf + y);
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27 if (L1 != L) {
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28 fprintf(stderr, "\n32L failed at offset %d\n", y);
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29 return 1;
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30 }
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31 STORE32H(L, buf + y);
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32 LOAD32H(L1, buf + y);
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33 if (L1 != L) {
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34 fprintf(stderr, "\n32H failed at offset %d\n", y);
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35 return 1;
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36 }
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37 }
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38
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39 for (y = 0; y < 8; y++) {
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40 LL = CONST64 (0x01020304050607);
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41 LL1 = 0;
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42 STORE64L(LL, buf + y);
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43 LOAD64L(LL1, buf + y);
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44 if (LL1 != LL) {
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45 fprintf(stderr, "\n64L failed at offset %d\n", y);
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46 return 1;
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47 }
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48 STORE64H(LL, buf + y);
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49 LOAD64H(LL1, buf + y);
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50 if (LL1 != LL) {
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51 fprintf(stderr, "\n64H failed at offset %d\n", y);
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52 return 1;
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53 }
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54 }
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55
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56 /* test LTC_FAST */
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57 #ifdef LTC_FAST
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58 y = 16;
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59
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60 for (z = 0; z < y; z++) {
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61 /* fill y bytes with random */
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62 yarrow_read(buf+z, y, &yarrow_prng);
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63 yarrow_read(buf+z+y, y, &yarrow_prng);
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64
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65 /* now XOR it byte for byte */
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66 for (x = 0; x < y; x++) {
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67 buf[2*y+z+x] = buf[z+x] ^ buf[z+y+x];
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68 }
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69
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70 /* now XOR it word for word */
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71 for (x = 0; x < y; x += sizeof(LTC_FAST_TYPE)) {
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72 *(LTC_FAST_TYPE_PTR_CAST(&buf[3*y+z+x])) = *(LTC_FAST_TYPE_PTR_CAST(&buf[z+x])) ^ *(LTC_FAST_TYPE_PTR_CAST(&buf[z+y+x]));
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73 }
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74
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75 if (memcmp(&buf[2*y+z], &buf[3*y+z], y)) {
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76 fprintf(stderr, "\nLTC_FAST failed at offset %d\n", z);
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77 return 1;
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78 }
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79 }
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80 #endif
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81 return 0;
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82 }
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83
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84 /* ref: $Format:%D$ */
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85 /* git commit: $Format:%H$ */
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86 /* commit time: $Format:%ai$ */