Viewing file:  kx.c (6.21 KB) -rw-r--r--
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#define TEST_NAME "kx"
#include "cmptest.h"
static const unsigned char small_order_p[crypto_scalarmult_BYTES] = {
0xe0, 0xeb, 0x7a, 0x7c, 0x3b, 0x41, 0xb8, 0xae, 0x16, 0x56, 0xe3,
0xfa, 0xf1, 0x9f, 0xc4, 0x6a, 0xda, 0x09, 0x8d, 0xeb, 0x9c, 0x32,
0xb1, 0xfd, 0x86, 0x62, 0x05, 0x16, 0x5f, 0x49, 0xb8, 0x00
};
static void
tv_kx(void)
{
unsigned char *seed;
unsigned char *client_pk, *client_sk;
unsigned char *client_rx, *client_tx;
unsigned char *server_pk, *server_sk;
unsigned char *server_rx, *server_tx;
char hex[65];
int i;
seed = (unsigned char *) sodium_malloc(crypto_kx_SEEDBYTES);
for (i = 0; i < crypto_kx_SEEDBYTES; i++) {
seed[i] = (unsigned char) i;
}
client_pk = (unsigned char *) sodium_malloc(crypto_kx_PUBLICKEYBYTES);
client_sk = (unsigned char *) sodium_malloc(crypto_kx_SECRETKEYBYTES);
crypto_kx_seed_keypair(client_pk, client_sk, seed);
sodium_bin2hex(hex, sizeof hex, client_pk, crypto_kx_PUBLICKEYBYTES);
printf("client_pk: [%s]\n", hex);
sodium_bin2hex(hex, sizeof hex, client_sk, crypto_kx_SECRETKEYBYTES);
printf("client_sk: [%s]\n", hex);
server_pk = (unsigned char *) sodium_malloc(crypto_kx_PUBLICKEYBYTES);
server_sk = (unsigned char *) sodium_malloc(crypto_kx_SECRETKEYBYTES);
crypto_kx_keypair(server_pk, server_sk);
client_rx = (unsigned char *) sodium_malloc(crypto_kx_SESSIONKEYBYTES);
client_tx = (unsigned char *) sodium_malloc(crypto_kx_SESSIONKEYBYTES);
assert(crypto_kx_client_session_keys(client_rx, client_tx,
client_pk, client_sk,
small_order_p) == -1);
if (crypto_kx_client_session_keys(client_rx, client_tx,
client_pk, client_sk, server_pk) != 0) {
printf("crypto_kx_client_session_keys() failed\n");
}
server_rx = (unsigned char *) sodium_malloc(crypto_kx_SESSIONKEYBYTES);
server_tx = (unsigned char *) sodium_malloc(crypto_kx_SESSIONKEYBYTES);
assert(crypto_kx_server_session_keys(server_rx, server_tx,
server_pk, server_sk,
small_order_p) == -1);
if (crypto_kx_server_session_keys(server_rx, server_tx,
server_pk, server_sk, client_pk) != 0) {
printf("crypto_kx_server_session_keys() failed\n");
}
if (memcmp(server_rx, client_tx, crypto_kx_SESSIONKEYBYTES) != 0 ||
memcmp(server_tx, client_rx, crypto_kx_SESSIONKEYBYTES) != 0) {
printf("client session keys != server session keys\n");
}
sodium_increment(client_pk, crypto_kx_PUBLICKEYBYTES);
if (crypto_kx_server_session_keys(server_rx, server_tx,
server_pk, server_sk, client_pk) != 0) {
printf("crypto_kx_server_session_keys() failed\n");
}
if (memcmp(server_rx, client_tx, crypto_kx_SESSIONKEYBYTES) == 0 &&
memcmp(server_tx, client_rx, crypto_kx_SESSIONKEYBYTES) == 0) {
printf("peer's public key is ignored\n");
}
crypto_kx_keypair(client_pk, client_sk);
if (crypto_kx_server_session_keys(server_rx, server_tx,
server_pk, server_sk, client_pk) != 0) {
printf("crypto_kx_server_session_keys() failed\n");
}
if (memcmp(server_rx, client_tx, crypto_kx_SESSIONKEYBYTES) == 0 ||
memcmp(server_tx, client_rx, crypto_kx_SESSIONKEYBYTES) == 0) {
printf("session keys are constant\n");
}
crypto_kx_seed_keypair(client_pk, client_sk, seed);
sodium_increment(seed, crypto_kx_SEEDBYTES);
crypto_kx_seed_keypair(server_pk, server_sk, seed);
if (crypto_kx_server_session_keys(server_rx, server_tx,
server_pk, server_sk, client_pk) != 0) {
printf("crypto_kx_server_session_keys() failed\n");
}
sodium_bin2hex(hex, sizeof hex, server_rx, crypto_kx_SESSIONKEYBYTES);
printf("server_rx: [%s]\n", hex);
sodium_bin2hex(hex, sizeof hex, server_tx, crypto_kx_SESSIONKEYBYTES);
printf("server_tx: [%s]\n", hex);
if (crypto_kx_client_session_keys(client_rx, client_tx,
client_pk, client_sk, server_pk) != 0) {
printf("crypto_kx_client_session_keys() failed\n");
}
sodium_bin2hex(hex, sizeof hex, client_rx, crypto_kx_SESSIONKEYBYTES);
printf("client_rx: [%s]\n", hex);
sodium_bin2hex(hex, sizeof hex, client_tx, crypto_kx_SESSIONKEYBYTES);
printf("client_tx: [%s]\n", hex);
randombytes_buf(client_rx, crypto_kx_SESSIONKEYBYTES);
randombytes_buf(client_tx, crypto_kx_SESSIONKEYBYTES);
randombytes_buf(server_rx, crypto_kx_SESSIONKEYBYTES);
randombytes_buf(server_tx, crypto_kx_SESSIONKEYBYTES);
if (crypto_kx_client_session_keys(client_rx, NULL,
client_pk, client_sk, server_pk) != 0 ||
crypto_kx_client_session_keys(NULL, client_tx,
client_pk, client_sk, server_pk) != 0 ||
crypto_kx_server_session_keys(server_rx, NULL,
server_pk, server_sk, client_pk) != 0 ||
crypto_kx_server_session_keys(NULL, server_tx,
server_pk, server_sk, client_pk) != 0) {
printf("failure when one of the pointers happens to be NULL");
}
assert(memcmp(client_rx, client_tx, crypto_kx_SESSIONKEYBYTES) == 0);
assert(memcmp(client_tx, server_rx, crypto_kx_SESSIONKEYBYTES) == 0);
assert(memcmp(server_rx, server_tx, crypto_kx_SESSIONKEYBYTES) == 0);
sodium_free(client_rx);
sodium_free(client_tx);
sodium_free(server_rx);
sodium_free(server_tx);
sodium_free(server_sk);
sodium_free(server_pk);
sodium_free(client_sk);
sodium_free(client_pk);
sodium_free(seed);
assert(strcmp(crypto_kx_primitive(), crypto_kx_PRIMITIVE) == 0);
assert(crypto_kx_publickeybytes() == crypto_kx_PUBLICKEYBYTES);
assert(crypto_kx_secretkeybytes() == crypto_kx_SECRETKEYBYTES);
assert(crypto_kx_seedbytes() == crypto_kx_SEEDBYTES);
assert(crypto_kx_sessionkeybytes() == crypto_kx_SESSIONKEYBYTES);
printf("tv_kx: ok\n");
}
int
main(void)
{
tv_kx();
return 0;
}
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