2 * Copyright (c) 2012, JANET(UK)
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39 #include <trust_router/tr_dh.h>
41 // char tmp_key1[32] =
42 // {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
43 // 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
44 // 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
45 // 0x19, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F};
47 // char tmp_key2[32] =
48 // {0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
49 // 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02,
50 // 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03,
51 // 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04};
60 unsigned char *c_keybuf = NULL;
61 unsigned char *s_keybuf = NULL;
62 int c_keylen = 0, s_keylen = 0, i = 0;
64 /* TBD -- Generate random private keys */
66 /* Generate initial DH params on the client side */
67 if (NULL == (c_dh = tr_create_dh_params(NULL, 0))) {
68 printf("Error: Can't create client DH params, exiting.\n");
72 fprintf(stderr, "Client DH Parameters:\n");
73 DHparams_print_fp(stdout, c_dh);
74 fprintf(stderr, "\n");
76 /*** Would now send DH params and client's public key to the server ***/
78 /* Generate DH params on the server side */
79 if (NULL == (s_dh = tr_create_matching_dh(NULL, 0, c_dh))) {
80 printf("Error: Can't create server server DH params, exiting.\n");
84 fprintf(stdout, "Server DH Parameters:\n");
85 DHparams_print_fp(stdout, s_dh);
86 fprintf(stdout, "\n");
88 /*** Would now send server's pub key to client ***/
90 /* Compute key on client */
91 if (0 > (c_keylen = tr_compute_dh_key(&c_keybuf,
97 /* Compute key on server */
98 if (0 > (s_keylen = tr_compute_dh_key(&s_keybuf,
101 printf("Error: Can't compute server key.\n");
105 /* Print out the client key. */
106 printf("Client Key Generated (len = %d):\n", c_keylen);
107 for (i = 0; i < c_keylen; i++) {
108 printf("%2x", c_keybuf[i]);
112 /* Print out the server key. */
113 printf("Server Key Generated (len = %d):\n", s_keylen);
114 for (i = 0; i < s_keylen; i++) {
115 printf("%2x", s_keybuf[i]);
119 /* Compare the two keys to see if they match */
120 if ((c_keylen != s_keylen) ||
121 (0 != memcmp(c_keybuf, s_keybuf, c_keylen))) {
122 printf("Error: Different keys generated!\n");
126 printf("Success: Identical keys generated, key length = %d!\n", c_keylen);