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annotate libtomcrypt/src/stream/rc4/rc4_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
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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 #include "tomcrypt.h"
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11
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12 #ifdef LTC_RC4_STREAM
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13
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14 int rc4_stream_test(void)
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15 {
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16 #ifndef LTC_TEST
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17 return CRYPT_NOP;
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18 #else
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19 rc4_state st;
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20 int err;
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21 const unsigned char key[] = { 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef };
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22 const unsigned char pt[] = { 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef };
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23 const unsigned char ct[] = { 0x75, 0xb7, 0x87, 0x80, 0x99, 0xe0, 0xc5, 0x96 };
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24 unsigned char buf[10];
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25
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26 if ((err = rc4_stream_setup(&st, key, sizeof(key))) != CRYPT_OK) return err;
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27 if ((err = rc4_stream_crypt(&st, pt, sizeof(pt), buf)) != CRYPT_OK) return err;
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28 if (compare_testvector(buf, sizeof(ct), ct, sizeof(ct), "RC4", 0)) return CRYPT_FAIL_TESTVECTOR;
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29 if ((err = rc4_stream_done(&st)) != CRYPT_OK) return err;
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30
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31 return CRYPT_OK;
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32 #endif
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33 }
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34
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35 #endif
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36
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37 /* ref: $Format:%D$ */
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38 /* git commit: $Format:%H$ */
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39 /* commit time: $Format:%ai$ */