Mercurial > dropbear

annotate libtomcrypt/src/stream/chacha/chacha_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
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10 /* The implementation is based on:
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11 * chacha-ref.c version 20080118
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12 * Public domain from D. J. Bernstein
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13 */
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14
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15 #include "tomcrypt.h"
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16
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17 #ifdef LTC_CHACHA
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18
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19 int chacha_test(void)
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20 {
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21 #ifndef LTC_TEST
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22 return CRYPT_NOP;
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23 #else
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24 unsigned long len;
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25 unsigned char out[1000];
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26 /* https://tools.ietf.org/html/rfc7539#section-2.4.2 */
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27 unsigned char k[] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
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28 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f };
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29 unsigned char n[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x4a, 0x00, 0x00, 0x00, 0x00 };
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30 unsigned char ct[] = { 0x6E, 0x2E, 0x35, 0x9A, 0x25, 0x68, 0xF9, 0x80, 0x41, 0xBA, 0x07, 0x28, 0xDD, 0x0D, 0x69, 0x81,
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31 0xE9, 0x7E, 0x7A, 0xEC, 0x1D, 0x43, 0x60, 0xC2, 0x0A, 0x27, 0xAF, 0xCC, 0xFD, 0x9F, 0xAE, 0x0B,
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32 0xF9, 0x1B, 0x65, 0xC5, 0x52, 0x47, 0x33, 0xAB, 0x8F, 0x59, 0x3D, 0xAB, 0xCD, 0x62, 0xB3, 0x57,
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33 0x16, 0x39, 0xD6, 0x24, 0xE6, 0x51, 0x52, 0xAB, 0x8F, 0x53, 0x0C, 0x35, 0x9F, 0x08, 0x61, 0xD8,
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34 0x07, 0xCA, 0x0D, 0xBF, 0x50, 0x0D, 0x6A, 0x61, 0x56, 0xA3, 0x8E, 0x08, 0x8A, 0x22, 0xB6, 0x5E,
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35 0x52, 0xBC, 0x51, 0x4D, 0x16, 0xCC, 0xF8, 0x06, 0x81, 0x8C, 0xE9, 0x1A, 0xB7, 0x79, 0x37, 0x36,
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36 0x5A, 0xF9, 0x0B, 0xBF, 0x74, 0xA3, 0x5B, 0xE6, 0xB4, 0x0B, 0x8E, 0xED, 0xF2, 0x78, 0x5E, 0x42,
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37 0x87, 0x4D };
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38 char pt[] = "Ladies and Gentlemen of the class of '99: If I could offer you only one tip for the future, sunscreen would be it.";
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39 chacha_state st;
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40 int err;
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41
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42 len = strlen(pt);
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43 /* crypt piece by piece */
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44 if ((err = chacha_setup(&st, k, sizeof(k), 20)) != CRYPT_OK) return err;
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45 if ((err = chacha_ivctr32(&st, n, sizeof(n), 1)) != CRYPT_OK) return err;
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46 if ((err = chacha_crypt(&st, (unsigned char*)pt, 35, out)) != CRYPT_OK) return err;
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47 if ((err = chacha_crypt(&st, (unsigned char*)pt + 35, 35, out + 35)) != CRYPT_OK) return err;
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48 if ((err = chacha_crypt(&st, (unsigned char*)pt + 70, 5, out + 70)) != CRYPT_OK) return err;
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49 if ((err = chacha_crypt(&st, (unsigned char*)pt + 75, 5, out + 75)) != CRYPT_OK) return err;
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50 if ((err = chacha_crypt(&st, (unsigned char*)pt + 80, len - 80, out + 80)) != CRYPT_OK) return err;
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51 if (compare_testvector(out, len, ct, sizeof(ct), "CHACHA-TV1", 1)) return CRYPT_FAIL_TESTVECTOR;
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52 /* crypt in one go */
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53 if ((err = chacha_setup(&st, k, sizeof(k), 20)) != CRYPT_OK) return err;
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54 if ((err = chacha_ivctr32(&st, n, sizeof(n), 1)) != CRYPT_OK) return err;
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55 if ((err = chacha_crypt(&st, (unsigned char*)pt, len, out)) != CRYPT_OK) return err;
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56 if (compare_testvector(out, len, ct, sizeof(ct), "CHACHA-TV2", 1)) return CRYPT_FAIL_TESTVECTOR;
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57 /* crypt in one go - using chacha_ivctr64() */
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58 if ((err = chacha_setup(&st, k, sizeof(k), 20)) != CRYPT_OK) return err;
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59 if ((err = chacha_ivctr64(&st, n + 4, sizeof(n) - 4, 1)) != CRYPT_OK) return err;
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60 if ((err = chacha_crypt(&st, (unsigned char*)pt, len, out)) != CRYPT_OK) return err;
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61 if (compare_testvector(out, len, ct, sizeof(ct), "CHACHA-TV3", 1)) return CRYPT_FAIL_TESTVECTOR;
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62
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63 return CRYPT_OK;
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64 #endif
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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 /* ref: $Format:%D$ */
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70 /* git commit: $Format:%H$ */
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71 /* commit time: $Format:%ai$ */