--- /dev/null
+/*
+ * Copyright (c) 2012, JANET(UK)
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of JANET(UK) nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#include <tr_dh.h>
+
+char tmp_key1[32] =
+ {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+ 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
+ 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
+ 0x19, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F};
+
+char tmp_key2[32] =
+ {0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+ 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02,
+ 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03,
+ 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04};
+
+int tmp_len = 32;
+
+int main (int argc,
+ const char *argv[])
+{
+ DH *c_dh = NULL;
+ DH *s_dh = NULL;
+ char *c_keybuf = NULL;
+ char *s_keybuf = NULL;
+ int dh_err = 0, c_keylen = 0, s_keylen = 0;
+
+ /* TBD -- Generate random private keys */
+
+ /* Generate initial DH params on the client side */
+ if (NULL == (c_dh = tr_create_dh_params(tmp_key1, tmp_len))) {
+ printf("Error: Can't create client DH params, exiting.\n");
+ exit(1);
+ }
+
+ fprintf(stderr, "Client DH Parameters:\n");
+ DHparams_print_fp(stdout, c_dh);
+ fprintf(stderr, "\n");
+
+ /*** Would now send DH params and client's public key to the server ***/
+
+ /* Generate DH params on the server side */
+ if (NULL == (s_dh = tr_create_matching_dh(tmp_key2, tmp_len, c_dh))) {
+ printf("Error: Can't create server server DH params, exiting.\n");
+ exit(1);
+ }
+
+ fprintf(stderr, "Server DH Parameters:\n");
+ DHparams_print_fp(stdout, s_dh);
+ fprintf(stderr, "\n");
+
+ /*** Would now send server's pub key to client ***/
+
+ /* Compute key on client */
+ if (NULL == (c_keybuf = malloc(DH_size(c_dh)))) {
+ printf ("Error: Can't allocate client keybuf, exiting.\n");
+ exit(1);
+ }
+ if (0 > (c_keylen = tr_compute_dh_key(c_keybuf,
+ DH_size(c_dh),
+ s_dh->pub_key,
+ c_dh))) {
+
+ }
+
+ /* Compute key on server */
+ if (NULL == (s_keybuf = malloc(DH_size(c_dh)))) {
+ printf ("Error: Can't allocate server keybuf, exiting.\n");
+ exit(1);
+ }
+ if (0 > (s_keylen = tr_compute_dh_key(s_keybuf,
+ DH_size(s_dh),
+ c_dh->pub_key,
+ s_dh))) {
+
+ }
+
+ /* Compare the two keys to see if they match */
+ if ((c_keylen != s_keylen) &&
+ (0 != memcmp(c_keybuf, s_keybuf, c_keylen))) {
+ printf("Error: Different keys generated!\n");
+ exit(1);
+ }
+
+ printf("Success: Identical keys generated!\n");
+ exit(0);
+}
+
+
+
--- /dev/null
+/*
+ * Copyright (c) 2012, JANET(UK)
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of JANET(UK) nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <openssl/dh.h>
+
+unsigned char tr_2048_dhprime[2048/8] = {
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xC9, 0x0F, 0xDA, 0xA2, 0x21, 0x68, 0xC2, 0x34,
+ 0xC4, 0xC6, 0x62, 0x8B, 0x80, 0xDC, 0x1C, 0xD1,
+ 0x29, 0x02, 0x4E, 0x08, 0x8A, 0x67, 0xCC, 0x74,
+ 0x02, 0x0B, 0xBE, 0xA6, 0x3B, 0x13, 0x9B, 0x22,
+ 0x51, 0x4A, 0x08, 0x79, 0x8E, 0x34, 0x04, 0xDD,
+ 0xEF, 0x95, 0x19, 0xB3, 0xCD, 0x3A, 0x43, 0x1B,
+ 0x30, 0x2B, 0x0A, 0x6D, 0xF2, 0x5F, 0x14, 0x37,
+ 0x4F, 0xE1, 0x35, 0x6D, 0x6D, 0x51, 0xC2, 0x45,
+ 0xE4, 0x85, 0xB5, 0x76, 0x62, 0x5E, 0x7E, 0xC6,
+ 0xF4, 0x4C, 0x42, 0xE9, 0xA6, 0x37, 0xED, 0x6B,
+ 0x0B, 0xFF, 0x5C, 0xB6, 0xF4, 0x06, 0xB7, 0xED,
+ 0xEE, 0x38, 0x6B, 0xFB, 0x5A, 0x89, 0x9F, 0xA5,
+ 0xAE, 0x9F, 0x24, 0x11, 0x7C, 0x4B, 0x1F, 0xE6,
+ 0x49, 0x28, 0x66, 0x51, 0xEC, 0xE4, 0x5B, 0x3D,
+ 0xC2, 0x00, 0x7C, 0xB8, 0xA1, 0x63, 0xBF, 0x05,
+ 0x98, 0xDA, 0x48, 0x36, 0x1C, 0x55, 0xD3, 0x9A,
+ 0x69, 0x16, 0x3F, 0xA8, 0xFD, 0x24, 0xCF, 0x5F,
+ 0x83, 0x65, 0x5D, 0x23, 0xDC, 0xA3, 0xAD, 0x96,
+ 0x1C, 0x62, 0xF3, 0x56, 0x20, 0x85, 0x52, 0xBB,
+ 0x9E, 0xD5, 0x29, 0x07, 0x70, 0x96, 0x96, 0x6D,
+ 0x67, 0x0C, 0x35, 0x4E, 0x4A, 0xBC, 0x98, 0x04,
+ 0xF1, 0x74, 0x6C, 0x08, 0xCA, 0x18, 0x21, 0x7C,
+ 0x32, 0x90, 0x5E, 0x46, 0x2E, 0x36, 0xCE, 0x3B,
+ 0xE3, 0x9E, 0x77, 0x2C, 0x18, 0x0E, 0x86, 0x03,
+ 0x9B, 0x27, 0x83, 0xA2, 0xEC, 0x07, 0xA2, 0x8F,
+ 0xB5, 0xC5, 0x5D, 0xF0, 0x6F, 0x4C, 0x52, 0xC9,
+ 0xDE, 0x2B, 0xCB, 0xF6, 0x95, 0x58, 0x17, 0x18,
+ 0x39, 0x95, 0x49, 0x7C, 0xEA, 0x95, 0x6A, 0xE5,
+ 0x15, 0xD2, 0x26, 0x18, 0x98, 0xFA, 0x05, 0x10,
+ 0x15, 0x72, 0x8E, 0x5A, 0x8A, 0xAC, 0xAA, 0x68,
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF
+};
+
+DH *tr_create_dh_params(char *priv_key,
+ size_t keylen) {
+
+ DH *dh = NULL;
+ int dh_err = 0;
+
+ if (NULL == (dh = DH_new()))
+ return NULL;
+
+ if ((NULL == (dh->g = BN_new())) ||
+ (NULL == (dh->p = BN_new())) ||
+ (NULL == (dh->q = BN_new()))) {
+ DH_free(dh);
+ }
+
+ BN_set_word(dh->g, 2);
+ dh->p = BN_bin2bn(tr_2048_dhprime, sizeof(tr_2048_dhprime), NULL);
+ BN_rshift1(dh->q, dh->p);
+
+ if ((priv_key) && (keylen > 0))
+ dh->priv_key = BN_bin2bn(priv_key, keylen, NULL);
+
+ DH_generate_key(dh); /* generates the public key */
+ DH_check(dh, &dh_err);
+ if (0 != dh_err) {
+ fprintf(stderr, "Warning: dh_check failed with %d", dh_err);
+ if (dh_err & DH_CHECK_P_NOT_PRIME)
+ fprintf(stderr, ": p value is not prime\n");
+ else if (dh_err & DH_CHECK_P_NOT_SAFE_PRIME)
+ fprintf(stderr, ": p value is not a safe prime\n");
+ else if (dh_err & DH_UNABLE_TO_CHECK_GENERATOR)
+ fprintf(stderr, ": unable to check the generator value\n");
+ else if (dh_err & DH_NOT_SUITABLE_GENERATOR)
+ fprintf (stderr, ": the g value is not a generator\n");
+ else
+ fprintf(stderr, "\n");
+ }
+
+ return(dh);
+}
+
+DH *tr_create_matching_dh (char *priv_key,
+ size_t keylen,
+ DH *in_dh) {
+ DH *dh = NULL;
+ int dh_err = 0;
+
+ if (!in_dh)
+ return NULL;
+
+ if (NULL == (dh = DH_new()))
+ return NULL;
+
+ if ((NULL == (dh->g = BN_dup(in_dh->g))) ||
+ (NULL == (dh->p = BN_dup(in_dh->p))) ||
+ (NULL == (dh->q = BN_dup(in_dh->q)))) {
+ DH_free(dh);
+ }
+
+ /* TBD -- share code with previous function */
+ if ((priv_key) && (keylen > 0))
+ dh->priv_key = BN_bin2bn(priv_key, keylen, NULL);
+
+ DH_generate_key(dh); /* generates the public key */
+ DH_check(dh, &dh_err);
+ if (0 != dh_err) {
+ fprintf(stderr, "Warning: dh_check failed with %d", dh_err);
+ if (dh_err & DH_CHECK_P_NOT_PRIME)
+ fprintf(stderr, ": p value is not prime\n");
+ else if (dh_err & DH_CHECK_P_NOT_SAFE_PRIME)
+ fprintf(stderr, ": p value is not a safe prime\n");
+ else if (dh_err & DH_UNABLE_TO_CHECK_GENERATOR)
+ fprintf(stderr, ": unable to check the generator value\n");
+ else if (dh_err & DH_NOT_SUITABLE_GENERATOR)
+ fprintf (stderr, ": the g value is not a generator\n");
+ else
+ fprintf(stderr, "\n");
+ }
+
+ return(dh);
+}
+
+void tr_destroy_dh_params(DH *dh) {
+
+ if (dh) {
+ DH_free(dh);
+ }
+}
+
+int tr_compute_dh_key(unsigned char *buf,
+ size_t buflen,
+ BIGNUM *pub_key,
+ DH *priv_dh) {
+
+ int rc = 0;
+
+ if ((!buf) ||
+ (!pub_key) ||
+ (!priv_dh) ||
+ (buflen < DH_size(priv_dh)))
+ return(-1);
+
+ rc = DH_compute_key(buf, pub_key, priv_dh);
+ return rc;
+}
+
+
+
+
projects / trust_router.git / commitdiff