Mercurial > dropbear

annotate libtomcrypt/testprof/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 f849a5ca2efc
children
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rev   line source
285
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diff changeset
1 #include <tomcrypt_test.h>
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2
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3 /* Test store/load macros with offsets */
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4 int store_test(void)
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5 {
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6 unsigned char buf[256];
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7 int y;
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8 ulong32 L, L1;
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9 ulong64 LL, LL1;
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10 #ifdef LTC_FAST
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11 int x, z;
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12 #endif
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13
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14 for (y = 0; y < 4; y++) {
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15 L = 0x12345678UL;
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16 L1 = 0;
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17 STORE32L(L, buf + y);
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18 LOAD32L(L1, buf + y);
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19 if (L1 != L) {
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20 fprintf(stderr, "\n32L failed at offset %d\n", y);
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21 return 1;
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22 }
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23 STORE32H(L, buf + y);
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24 LOAD32H(L1, buf + y);
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25 if (L1 != L) {
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26 fprintf(stderr, "\n32H failed at offset %d\n", y);
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27 return 1;
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28 }
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29 }
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30
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31 for (y = 0; y < 8; y++) {
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32 LL = CONST64 (0x01020304050607);
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33 LL1 = 0;
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34 STORE64L(LL, buf + y);
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35 LOAD64L(LL1, buf + y);
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36 if (LL1 != LL) {
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37 fprintf(stderr, "\n64L failed at offset %d\n", y);
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38 return 1;
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39 }
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40 STORE64H(LL, buf + y);
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41 LOAD64H(LL1, buf + y);
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42 if (LL1 != LL) {
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43 fprintf(stderr, "\n64H failed at offset %d\n", y);
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44 return 1;
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45 }
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46 }
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47
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48 /* test LTC_FAST */
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49 #ifdef LTC_FAST
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50 y = 16;
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51
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
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52 for (z = 0; z < y; z++) {
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53 /* fill y bytes with random */
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54 yarrow_read(buf+z, y, &yarrow_prng);
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55 yarrow_read(buf+z+y, y, &yarrow_prng);
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56
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57 /* now XOR it byte for byte */
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58 for (x = 0; x < y; x++) {
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59 buf[2*y+z+x] = buf[z+x] ^ buf[z+y+x];
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60 }
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61
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62 /* now XOR it word for word */
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63 for (x = 0; x < y; x += sizeof(LTC_FAST_TYPE)) {
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64 *((LTC_FAST_TYPE*)(&buf[3*y+z+x])) = *((LTC_FAST_TYPE*)(&buf[z+x])) ^ *((LTC_FAST_TYPE*)(&buf[z+y+x]));
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65 }
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66
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67 if (memcmp(&buf[2*y+z], &buf[3*y+z], y)) {
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68 fprintf(stderr, "\nLTC_FAST failed at offset %d\n", z);
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69 return 1;
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70 }
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71 }
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72 #endif
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73 return 0;
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74 }
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75
1435
f849a5ca2efc update to libtomcrypt 1.17 (with Dropbear changes)
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76 /* $Source$ */
f849a5ca2efc update to libtomcrypt 1.17 (with Dropbear changes)
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77 /* $Revision$ */
f849a5ca2efc update to libtomcrypt 1.17 (with Dropbear changes)
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78 /* $Date$ */