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view libtomcrypt/tests/multi_test.c @ 1788:1fc0012b9c38

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Fix handling of replies to global requests (#112) The current code assumes that all global requests want / need a reply. This isn't always true and the request itself indicates if it wants a reply or not. It causes a specific problem with [email protected] messages. These are sent by OpenSSH after authentication to inform the client of potential other host keys for the host. This can be used to add a new type of host key or to rotate host keys. The initial information message from the server is sent as a global request, but with want_reply set to false. This means that the server doesn't expect an answer to this message. Instead the client needs to send a prove request as a reply if it wants to receive proof of ownership for the host keys. The bug doesn't cause any current problems with due to how OpenSSH treats receiving the failure message. It instead treats it as a keepalive message and further ignores it. Arguably this is a protocol violation though of Dropbear and it is only accidental that it doesn't cause a problem with OpenSSH. The bug was found when adding host keys support to libssh, which is more strict protocol wise and treats the unexpected failure message an error, also see https://gitlab.com/libssh/libssh-mirror/-/merge_requests/145 for more information. The fix here is to honor the want_reply flag in the global request and to only send a reply if the other side expects a reply.
author Dirkjan Bussink <d.bussink@gmail.com>
date Thu, 10 Dec 2020 16:13:13 +0100
parents 6dba84798cd5
children
line wrap: on
line source

/* LibTomCrypt, modular cryptographic library -- Tom St Denis
 *
 * LibTomCrypt is a library that provides various cryptographic
 * algorithms in a highly modular and flexible manner.
 *
 * The library is free for all purposes without any express
 * guarantee it works.
 */
/* test the multi helpers... */
#include <tomcrypt_test.h>

int multi_test(void)
{
   unsigned char key[32] = { 0 };
   unsigned char buf[2][MAXBLOCKSIZE];
   unsigned long len, len2;

/* register algos */
   register_hash(&sha256_desc);
   register_cipher(&aes_desc);

/* HASH testing */
   len = sizeof(buf[0]);
   hash_memory(find_hash("sha256"), (unsigned char*)"hello", 5, buf[0], &len);
   len2 = sizeof(buf[0]);
   hash_memory_multi(find_hash("sha256"), buf[1], &len2, (unsigned char*)"hello", 5, NULL);
   if (len != len2 || memcmp(buf[0], buf[1], len)) {
      printf("Failed: %d %lu %lu\n", __LINE__, len, len2);
      return CRYPT_FAIL_TESTVECTOR;
   }
   len2 = sizeof(buf[0]);
   hash_memory_multi(find_hash("sha256"), buf[1], &len2, (unsigned char*)"he", 2UL, "llo", 3UL, NULL, 0);
   if (len != len2 || memcmp(buf[0], buf[1], len)) {
      printf("Failed: %d %lu %lu\n", __LINE__, len, len2);
      return CRYPT_FAIL_TESTVECTOR;
   }
   len2 = sizeof(buf[0]);
   hash_memory_multi(find_hash("sha256"), buf[1], &len2, (unsigned char*)"h", 1UL, "e", 1UL, "l", 1UL, "l", 1UL, "o", 1UL, NULL);
   if (len != len2 || memcmp(buf[0], buf[1], len)) {
      printf("Failed: %d %lu %lu\n", __LINE__, len, len2);
      return CRYPT_FAIL_TESTVECTOR;
   }

#ifdef LTC_HMAC
   len = sizeof(buf[0]);
   hmac_memory(find_hash("sha256"), key, 16, (unsigned char*)"hello", 5, buf[0], &len);
   len2 = sizeof(buf[0]);
   hmac_memory_multi(find_hash("sha256"), key, 16, buf[1], &len2, (unsigned char*)"hello", 5UL, NULL);
   if (len != len2 || memcmp(buf[0], buf[1], len)) {
      printf("Failed: %d %lu %lu\n", __LINE__, len, len2);
      return CRYPT_FAIL_TESTVECTOR;
   }
   len2 = sizeof(buf[0]);
   hmac_memory_multi(find_hash("sha256"), key, 16, buf[1], &len2, (unsigned char*)"he", 2UL, "llo", 3UL, NULL);
   if (len != len2 || memcmp(buf[0], buf[1], len)) {
      printf("Failed: %d %lu %lu\n", __LINE__, len, len2);
      return CRYPT_FAIL_TESTVECTOR;
   }
   len2 = sizeof(buf[0]);
   hmac_memory_multi(find_hash("sha256"), key, 16, buf[1], &len2, (unsigned char*)"h", 1UL, "e", 1UL, "l", 1UL, "l", 1UL, "o", 1UL, NULL);
   if (len != len2 || memcmp(buf[0], buf[1], len)) {
      printf("Failed: %d %lu %lu\n", __LINE__, len, len2);
      return CRYPT_FAIL_TESTVECTOR;
   }
#endif

#ifdef LTC_OMAC
   len = sizeof(buf[0]);
   omac_memory(find_cipher("aes"), key, 16, (unsigned char*)"hello", 5, buf[0], &len);
   len2 = sizeof(buf[0]);
   omac_memory_multi(find_cipher("aes"), key, 16, buf[1], &len2, (unsigned char*)"hello", 5UL, NULL);
   if (len != len2 || memcmp(buf[0], buf[1], len)) {
      printf("Failed: %d %lu %lu\n", __LINE__, len, len2);
      return CRYPT_FAIL_TESTVECTOR;
   }
   len2 = sizeof(buf[0]);
   omac_memory_multi(find_cipher("aes"), key, 16, buf[1], &len2, (unsigned char*)"he", 2UL, "llo", 3UL, NULL);
   if (len != len2 || memcmp(buf[0], buf[1], len)) {
      printf("Failed: %d %lu %lu\n", __LINE__, len, len2);
      return CRYPT_FAIL_TESTVECTOR;
   }
   len2 = sizeof(buf[0]);
   omac_memory_multi(find_cipher("aes"), key, 16, buf[1], &len2, (unsigned char*)"h", 1UL, "e", 1UL, "l", 1UL, "l", 1UL, "o", 1UL, NULL);
   if (len != len2 || memcmp(buf[0], buf[1], len)) {
      printf("Failed: %d %lu %lu\n", __LINE__, len, len2);
      return CRYPT_FAIL_TESTVECTOR;
   }
#endif

#ifdef LTC_PMAC
   len = sizeof(buf[0]);
   pmac_memory(find_cipher("aes"), key, 16, (unsigned char*)"hello", 5, buf[0], &len);
   len2 = sizeof(buf[0]);
   pmac_memory_multi(find_cipher("aes"), key, 16, buf[1], &len2, (unsigned char*)"hello", 5, NULL);
   if (len != len2 || memcmp(buf[0], buf[1], len)) {
      printf("Failed: %d %lu %lu\n", __LINE__, len, len2);
      return CRYPT_FAIL_TESTVECTOR;
   }
   len2 = sizeof(buf[0]);
   pmac_memory_multi(find_cipher("aes"), key, 16, buf[1], &len2, (unsigned char*)"he", 2UL, "llo", 3UL, NULL);
   if (len != len2 || memcmp(buf[0], buf[1], len)) {
      printf("Failed: %d %lu %lu\n", __LINE__, len, len2);
      return CRYPT_FAIL_TESTVECTOR;
   }
   len2 = sizeof(buf[0]);
   pmac_memory_multi(find_cipher("aes"), key, 16, buf[1], &len2, (unsigned char*)"h", 1UL, "e", 1UL, "l", 1UL, "l", 1UL, "o", 1UL, NULL);
   if (len != len2 || memcmp(buf[0], buf[1], len)) {
      printf("Failed: %d %lu %lu\n", __LINE__, len, len2);
      return CRYPT_FAIL_TESTVECTOR;
   }
#endif

#ifdef LTC_XCBC
   len = sizeof(buf[0]);
   xcbc_memory(find_cipher("aes"), key, 16, (unsigned char*)"hello", 5, buf[0], &len);
   len2 = sizeof(buf[0]);
   xcbc_memory_multi(find_cipher("aes"), key, 16, buf[1], &len2, (unsigned char*)"hello", 5, NULL);
   if (len != len2 || memcmp(buf[0], buf[1], len)) {
      printf("Failed: %d %lu %lu\n", __LINE__, len, len2);
      return CRYPT_FAIL_TESTVECTOR;
   }
   len2 = sizeof(buf[0]);
   xcbc_memory_multi(find_cipher("aes"), key, 16, buf[1], &len2, (unsigned char*)"he", 2UL, "llo", 3UL, NULL);
   if (len != len2 || memcmp(buf[0], buf[1], len)) {
      printf("Failed: %d %lu %lu\n", __LINE__, len, len2);
      return CRYPT_FAIL_TESTVECTOR;
   }
   len2 = sizeof(buf[0]);
   xcbc_memory_multi(find_cipher("aes"), key, 16, buf[1], &len2, (unsigned char*)"h", 1UL, "e", 1UL, "l", 1UL, "l", 1UL, "o", 1UL, NULL);
   if (len != len2 || memcmp(buf[0], buf[1], len)) {
      printf("Failed: %d %lu %lu\n", __LINE__, len, len2);
      return CRYPT_FAIL_TESTVECTOR;
   }
#endif

#ifdef LTC_F9
   len = sizeof(buf[0]);
   f9_memory(find_cipher("aes"), key, 16, (unsigned char*)"hello", 5, buf[0], &len);
   len2 = sizeof(buf[0]);
   f9_memory_multi(find_cipher("aes"), key, 16, buf[1], &len2, (unsigned char*)"hello", 5, NULL);
   if (len != len2 || memcmp(buf[0], buf[1], len)) {
      printf("Failed: %d %lu %lu\n", __LINE__, len, len2);
      return CRYPT_FAIL_TESTVECTOR;
   }
   len2 = sizeof(buf[0]);
   f9_memory_multi(find_cipher("aes"), key, 16, buf[1], &len2, (unsigned char*)"he", 2UL, "llo", 3UL, NULL);
   if (len != len2 || memcmp(buf[0], buf[1], len)) {
      printf("Failed: %d %lu %lu\n", __LINE__, len, len2);
      return CRYPT_FAIL_TESTVECTOR;
   }
   len2 = sizeof(buf[0]);
   f9_memory_multi(find_cipher("aes"), key, 16, buf[1], &len2, (unsigned char*)"h", 1UL, "e", 1UL, "l", 1UL, "l", 1UL, "o", 1UL, NULL);
   if (len != len2 || memcmp(buf[0], buf[1], len)) {
      printf("Failed: %d %lu %lu\n", __LINE__, len, len2);
      return CRYPT_FAIL_TESTVECTOR;
   }
#endif

#ifdef LTC_PELICAN
   /* TODO: there is no pelican_memory_multi(..) */
#endif

#ifdef LTC_POLY1305
   len = sizeof(buf[0]);
   poly1305_memory(key, 32, (unsigned char*)"hello", 5, buf[0], &len);
   len2 = sizeof(buf[0]);
   poly1305_memory_multi(key, 32, buf[1], &len2, (unsigned char*)"hello", 5, NULL);
   if (len != len2 || memcmp(buf[0], buf[1], len)) {
      printf("Failed: %d %lu %lu\n", __LINE__, len, len2);
      return CRYPT_FAIL_TESTVECTOR;
   }
   len2 = sizeof(buf[0]);
   poly1305_memory_multi(key, 32, buf[1], &len2, (unsigned char*)"he", 2UL, "llo", 3UL, NULL);
   if (len != len2 || memcmp(buf[0], buf[1], len)) {
      printf("Failed: %d %lu %lu\n", __LINE__, len, len2);
      return CRYPT_FAIL_TESTVECTOR;
   }
   len2 = sizeof(buf[0]);
   poly1305_memory_multi(key, 32, buf[1], &len2, (unsigned char*)"h", 1UL, "e", 1UL, "l", 1UL, "l", 1UL, "o", 1UL, NULL);
   if (len != len2 || memcmp(buf[0], buf[1], len)) {
      printf("Failed: %d %lu %lu\n", __LINE__, len, len2);
      return CRYPT_FAIL_TESTVECTOR;
   }
#endif

#ifdef LTC_BLAKE2SMAC
   len = 32;
   blake2smac_memory(key, 16, (unsigned char*)"hello", 5, buf[0], &len);
   len2 = 32;
   blake2smac_memory_multi(key, 16, buf[1], &len2, (unsigned char*)"hello", 5, NULL);
   if (len != len2 || memcmp(buf[0], buf[1], len)) {
      printf("Failed: %d %lu %lu\n", __LINE__, len, len2);
      return CRYPT_FAIL_TESTVECTOR;
   }
   len2 = 32;
   blake2smac_memory_multi(key, 16, buf[1], &len2, (unsigned char*)"he", 2UL, "llo", 3UL, NULL);
   if (len != len2 || memcmp(buf[0], buf[1], len)) {
      printf("Failed: %d %lu %lu\n", __LINE__, len, len2);
      return CRYPT_FAIL_TESTVECTOR;
   }
   len2 = 32;
   blake2smac_memory_multi(key, 16, buf[1], &len2, (unsigned char*)"h", 1UL, "e", 1UL, "l", 1UL, "l", 1UL, "o", 1UL, NULL);
   if (len != len2 || memcmp(buf[0], buf[1], len)) {
      printf("Failed: %d %lu %lu\n", __LINE__, len, len2);
      return CRYPT_FAIL_TESTVECTOR;
   }
#endif

#ifdef LTC_BLAKE2BMAC
   len = 64;
   blake2bmac_memory(key, 16, (unsigned char*)"hello", 5, buf[0], &len);
   len2 = 64;
   blake2bmac_memory_multi(key, 16, buf[1], &len2, (unsigned char*)"hello", 5, NULL);
   if (len != len2 || memcmp(buf[0], buf[1], len)) {
      printf("Failed: %d %lu %lu\n", __LINE__, len, len2);
      return CRYPT_FAIL_TESTVECTOR;
   }
   len2 = 64;
   blake2bmac_memory_multi(key, 16, buf[1], &len2, (unsigned char*)"he", 2UL, "llo", 3UL, NULL);
   if (len != len2 || memcmp(buf[0], buf[1], len)) {
      printf("Failed: %d %lu %lu\n", __LINE__, len, len2);
      return CRYPT_FAIL_TESTVECTOR;
   }
   len2 = 64;
   blake2bmac_memory_multi(key, 16, buf[1], &len2, (unsigned char*)"h", 1UL, "e", 1UL, "l", 1UL, "l", 1UL, "o", 1UL, NULL);
   if (len != len2 || memcmp(buf[0], buf[1], len)) {
      printf("Failed: %d %lu %lu\n", __LINE__, len, len2);
      return CRYPT_FAIL_TESTVECTOR;
   }
#endif

   return CRYPT_OK;
}

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