kx.c

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    1 
    2 #define TEST_NAME "kx"
    3 #include "cmptest.h"
    4 
    5 static const unsigned char small_order_p[crypto_scalarmult_BYTES] = {
    6     0xe0, 0xeb, 0x7a, 0x7c, 0x3b, 0x41, 0xb8, 0xae, 0x16, 0x56, 0xe3,
    7     0xfa, 0xf1, 0x9f, 0xc4, 0x6a, 0xda, 0x09, 0x8d, 0xeb, 0x9c, 0x32,
    8     0xb1, 0xfd, 0x86, 0x62, 0x05, 0x16, 0x5f, 0x49, 0xb8, 0x00
    9 };
   10 
   11 static void
   12 tv_kx(void)
   13 {
   14     unsigned char *seed;
   15     unsigned char *client_pk, *client_sk;
   16     unsigned char *client_rx, *client_tx;
   17     unsigned char *server_pk, *server_sk;
   18     unsigned char *server_rx, *server_tx;
   19     char           hex[65];
   20     int            i;
   21 
   22     seed = (unsigned char *) sodium_malloc(crypto_kx_SEEDBYTES);
   23     for (i = 0; i < crypto_kx_SEEDBYTES; i++) {
   24         seed[i] = (unsigned char) i;
   25     }
   26     client_pk = (unsigned char *) sodium_malloc(crypto_kx_PUBLICKEYBYTES);
   27     client_sk = (unsigned char *) sodium_malloc(crypto_kx_SECRETKEYBYTES);
   28     crypto_kx_seed_keypair(client_pk, client_sk, seed);
   29 
   30     sodium_bin2hex(hex, sizeof hex, client_pk, crypto_kx_PUBLICKEYBYTES);
   31     printf("client_pk: [%s]\n", hex);
   32     sodium_bin2hex(hex, sizeof hex, client_sk, crypto_kx_SECRETKEYBYTES);
   33     printf("client_sk: [%s]\n", hex);
   34 
   35     server_pk = (unsigned char *) sodium_malloc(crypto_kx_PUBLICKEYBYTES);
   36     server_sk = (unsigned char *) sodium_malloc(crypto_kx_SECRETKEYBYTES);
   37     crypto_kx_keypair(server_pk, server_sk);
   38 
   39     client_rx = (unsigned char *) sodium_malloc(crypto_kx_SESSIONKEYBYTES);
   40     client_tx = (unsigned char *) sodium_malloc(crypto_kx_SESSIONKEYBYTES);
   41 
   42     assert(crypto_kx_client_session_keys(client_rx, client_tx,
   43                                          client_pk, client_sk,
   44                                          small_order_p) == -1);
   45     if (crypto_kx_client_session_keys(client_rx, client_tx,
   46                                       client_pk, client_sk, server_pk) != 0) {
   47         printf("crypto_kx_client_session_keys() failed\n");
   48     }
   49 
   50     server_rx = (unsigned char *) sodium_malloc(crypto_kx_SESSIONKEYBYTES);
   51     server_tx = (unsigned char *) sodium_malloc(crypto_kx_SESSIONKEYBYTES);
   52 
   53     assert(crypto_kx_server_session_keys(server_rx, server_tx,
   54                                          server_pk, server_sk,
   55                                          small_order_p) == -1);
   56     if (crypto_kx_server_session_keys(server_rx, server_tx,
   57                                       server_pk, server_sk, client_pk) != 0) {
   58         printf("crypto_kx_server_session_keys() failed\n");
   59     }
   60     if (memcmp(server_rx, client_tx, crypto_kx_SESSIONKEYBYTES) != 0 ||
   61         memcmp(server_tx, client_rx, crypto_kx_SESSIONKEYBYTES) != 0) {
   62         printf("client session keys != server session keys\n");
   63     }
   64 
   65     sodium_increment(client_pk, crypto_kx_PUBLICKEYBYTES);
   66     if (crypto_kx_server_session_keys(server_rx, server_tx,
   67                                       server_pk, server_sk, client_pk) != 0) {
   68         printf("crypto_kx_server_session_keys() failed\n");
   69     }
   70     if (memcmp(server_rx, client_tx, crypto_kx_SESSIONKEYBYTES) == 0 &&
   71         memcmp(server_tx, client_rx, crypto_kx_SESSIONKEYBYTES) == 0) {
   72         printf("peer's public key is ignored\n");
   73     }
   74 
   75     crypto_kx_keypair(client_pk, client_sk);
   76     if (crypto_kx_server_session_keys(server_rx, server_tx,
   77                                       server_pk, server_sk, client_pk) != 0) {
   78         printf("crypto_kx_server_session_keys() failed\n");
   79     }
   80     if (memcmp(server_rx, client_tx, crypto_kx_SESSIONKEYBYTES) == 0 ||
   81         memcmp(server_tx, client_rx, crypto_kx_SESSIONKEYBYTES) == 0) {
   82         printf("session keys are constant\n");
   83     }
   84 
   85     crypto_kx_seed_keypair(client_pk, client_sk, seed);
   86     sodium_increment(seed, crypto_kx_SEEDBYTES);
   87     crypto_kx_seed_keypair(server_pk, server_sk, seed);
   88     if (crypto_kx_server_session_keys(server_rx, server_tx,
   89                                       server_pk, server_sk, client_pk) != 0) {
   90         printf("crypto_kx_server_session_keys() failed\n");
   91     }
   92     sodium_bin2hex(hex, sizeof hex, server_rx, crypto_kx_SESSIONKEYBYTES);
   93     printf("server_rx: [%s]\n", hex);
   94     sodium_bin2hex(hex, sizeof hex, server_tx, crypto_kx_SESSIONKEYBYTES);
   95     printf("server_tx: [%s]\n", hex);
   96 
   97     if (crypto_kx_client_session_keys(client_rx, client_tx,
   98                                       client_pk, client_sk, server_pk) != 0) {
   99         printf("crypto_kx_client_session_keys() failed\n");
  100     }
  101     sodium_bin2hex(hex, sizeof hex, client_rx, crypto_kx_SESSIONKEYBYTES);
  102     printf("client_rx: [%s]\n", hex);
  103     sodium_bin2hex(hex, sizeof hex, client_tx, crypto_kx_SESSIONKEYBYTES);
  104     printf("client_tx: [%s]\n", hex);
  105 
  106     randombytes_buf(client_rx, crypto_kx_SESSIONKEYBYTES);
  107     randombytes_buf(client_tx, crypto_kx_SESSIONKEYBYTES);
  108     randombytes_buf(server_rx, crypto_kx_SESSIONKEYBYTES);
  109     randombytes_buf(server_tx, crypto_kx_SESSIONKEYBYTES);
  110     if (crypto_kx_client_session_keys(client_rx, NULL,
  111                                       client_pk, client_sk, server_pk) != 0 ||
  112         crypto_kx_client_session_keys(NULL, client_tx,
  113                                       client_pk, client_sk, server_pk) != 0 ||
  114         crypto_kx_server_session_keys(server_rx, NULL,
  115                                       server_pk, server_sk, client_pk) != 0 ||
  116         crypto_kx_server_session_keys(NULL, server_tx,
  117                                       server_pk, server_sk, client_pk) != 0) {
  118         printf("failure when one of the pointers happens to be NULL");
  119     }
  120     assert(memcmp(client_rx, client_tx, crypto_kx_SESSIONKEYBYTES) == 0);
  121     assert(memcmp(client_tx, server_rx, crypto_kx_SESSIONKEYBYTES) == 0);
  122     assert(memcmp(server_rx, server_tx, crypto_kx_SESSIONKEYBYTES) == 0);
  123 
  124     sodium_free(client_rx);
  125     sodium_free(client_tx);
  126     sodium_free(server_rx);
  127     sodium_free(server_tx);
  128     sodium_free(server_sk);
  129     sodium_free(server_pk);
  130     sodium_free(client_sk);
  131     sodium_free(client_pk);
  132     sodium_free(seed);
  133 
  134     assert(strcmp(crypto_kx_primitive(), crypto_kx_PRIMITIVE) == 0);
  135     assert(crypto_kx_publickeybytes() == crypto_kx_PUBLICKEYBYTES);
  136     assert(crypto_kx_secretkeybytes() == crypto_kx_SECRETKEYBYTES);
  137     assert(crypto_kx_seedbytes() == crypto_kx_SEEDBYTES);
  138     assert(crypto_kx_sessionkeybytes() == crypto_kx_SESSIONKEYBYTES);
  139 
  140     printf("tv_kx: ok\n");
  141 }
  142 
  143 int
  144 main(void)
  145 {
  146     tv_kx();
  147 
  148     return 0;
  149 }

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FreeBSD/Linux Kernel Cross Reference sys/contrib/libsodium/test/default/kx.c

FreeBSD/Linux Kernel Cross Reference
sys/contrib/libsodium/test/default/kx.c