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-rw-r--r--tests/test_ecc_utils.c345
1 files changed, 193 insertions, 152 deletions
diff --git a/tests/test_ecc_utils.c b/tests/test_ecc_utils.c
index a635ebe..5c81eba 100644
--- a/tests/test_ecc_utils.c
+++ b/tests/test_ecc_utils.c
@@ -1,7 +1,30 @@
/* test_ecc_utils.c - TinyCrypt common functions for ECC tests */
+/* Copyright (c) 2014, Kenneth MacKay
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * * 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.
+ *
+ * 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.*/
+
/*
- * Copyright (C) 2015 by Intel Corporation, All Rights Reserved.
+ * Copyright (C) 2017 by Intel Corporation, All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
@@ -32,8 +55,7 @@
* test_ecc_utils.c -- Implementation of some common functions for ECC tests.
*
*/
-#include <tinycrypt/ecc.h>
-#include <tinycrypt/ecc_dh.h>
+
#include <test_ecc_utils.h>
#include <tinycrypt/constants.h>
@@ -41,190 +63,209 @@
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
+#include <fcntl.h>
+#include <stdbool.h>
+#include <unistd.h>
-extern int randfd;
-
-void getRandomBytes(void *p_dest, unsigned p_size) {
- if(read(randfd, p_dest, p_size) != (int)p_size) {
- printf("Failed to get random bytes.\n");
- }
-}
-
-int hex2int (char hex) {
- uint8_t dec;
+int hex2int (char hex)
+{
+ uint8_t dec;
- if ('0' <= hex && hex <= '9') dec = hex - '0';
- else if ('a' <= hex && hex <= 'f') dec = hex - 'a' + 10;
- else if ('A' <= hex && hex <= 'F') dec = hex - 'A' + 10;
- else return -1;
+ if ('0' <= hex && hex <= '9') dec = hex - '0';
+ else if ('a' <= hex && hex <= 'f') dec = hex - 'a' + 10;
+ else if ('A' <= hex && hex <= 'F') dec = hex - 'A' + 10;
+ else return -1;
- return dec;
+ return dec;
}
/*
* Convert hex string to byte string
* Return number of bytes written to buf, or 0 on error
*/
-int hex2bin(
- uint8_t *buf,
- const size_t buflen,
- const char *hex,
- const size_t hexlen) {
-
- int dec;
-
- if (buflen < hexlen/2 + hexlen%2)
- return false;
-
- // if hexlen is uneven, insert leading zero nibble
- if (hexlen%2) {
- dec = hex2int(hex[0]);
- if (dec == -1)
- return false;
- buf[0] = dec;
- buf++;
- hex++;
- }
-
- // regular hex conversion
- for (size_t i = 0; i<hexlen/2; i++) {
- dec = hex2int(hex[2*i]);
- if (dec == -1)
- return false;
- buf[i] = dec << 4;
-
- dec = hex2int(hex[2*i+1]);
- if (dec == -1)
- return false;
- buf[i] += dec;
- }
- return hexlen/2 + hexlen%2;
+int hex2bin(uint8_t *buf, const size_t buflen, const char *hex,
+ const size_t hexlen)
+{
+
+ int dec;
+
+ if (buflen < hexlen / 2 + hexlen % 2)
+ {
+ return false;
+ }
+
+ /* if hexlen is uneven, insert leading zero nibble */
+ if (hexlen % 2)
+ {
+ dec = hex2int(hex[0]);
+ if (dec == -1)
+ return false;
+ buf[0] = dec;
+ buf++;
+ hex++;
+ }
+
+ /* regular hex conversion */
+ for (size_t i = 0; i < hexlen / 2; i++)
+ {
+ dec = hex2int(hex[2 * i]);
+ if (dec == -1)
+ {
+ return false;
+ }
+ buf[i] = dec << 4;
+
+ dec = hex2int(hex[ 2 * i + 1]);
+ if (dec == -1)
+ {
+ return false;
+ }
+ buf[i] += dec;
+ }
+ return hexlen / 2 + hexlen % 2;
}
/*
* Convert hex string to zero-padded nanoECC scalar
*/
-void string2scalar(uint32_t * scalar, uint32_t num_word32, char *str) {
+void string2scalar(unsigned int *scalar, unsigned int num_word32, char *str)
+{
- uint32_t num_bytes = 4*num_word32;
- uint8_t tmp[num_bytes];
- size_t hexlen = strlen(str);
+ unsigned int num_bytes = 4 * num_word32;
+ uint8_t tmp[num_bytes];
+ size_t hexlen = strlen(str);
- int padding;
+ int padding;
- if (0 > (padding = 2*num_bytes - strlen(str))) {
- printf(
- "Error: 2*num_bytes(%u) < strlen(hex) (%zu)\n",
- 2*num_bytes,
- strlen(str));
- exit(-1);
- }
+ if (0 > (padding = 2 * num_bytes - strlen(str)))
+ {
+ printf("Error: 2 * num_bytes(%d) < strlen(hex) (%zu)\n",
+ 2 * num_bytes, strlen(str));
+ exit(-1);
+ }
- memset(tmp, 0, padding/2);
+ memset(tmp, 0, padding / 2);
- if (false == hex2bin(tmp+padding/2, num_bytes, str, hexlen))
- exit(-1);
- ecc_bytes2native(scalar, tmp);
+ if (false == hex2bin(tmp + padding / 2, num_bytes, str, hexlen))
+ {
+ exit(-1);
+ }
+ uECC_vli_bytesToNative(scalar, tmp, num_bytes);
}
-void vli_print(uint32_t *p_vli, unsigned int p_size) {
- while(p_size) {
- printf("%08X ", (unsigned)p_vli[p_size - 1]);
- --p_size;
- }
+void vli_print_bytes(uint8_t *vli, unsigned int size)
+{
+ for(unsigned i = 0; i < size; ++i)
+ {
+ printf("%02X ", (unsigned)vli[i]);
+ }
}
-void print_ecc_scalar(
- const char *label,
- const uint32_t * p_vli,
- uint32_t num_word32) {
- uint32_t i;
+void print_ecc_scalar(const char *label, const unsigned int * p_vli,
+ unsigned int num_word32)
+{
+ unsigned int i;
- if (label)
- printf("%s = { ", label);
+ if (label) {
+ printf("%s = { ", label);
+ }
- for(i=0; i<num_word32-1; ++i)
- printf("0x%08lX, ", (unsigned long)p_vli[i]);
- printf("0x%08lX", (unsigned long)p_vli[i]);
+ for(i = 0; i < num_word32 - 1; ++i) {
+ printf("0x%08lX, ", (unsigned long)p_vli[i]);
+ }
+ printf("0x%08lX", (unsigned long)p_vli[i]);
- if (label)
- printf(" };\n");
+ if (label) {
+ printf(" };\n");
+ }
}
-void check_code(const int num,
- const char *name,
- const int expected,
- const int computed,
- const int verbose) {
-
- if (expected != computed) {
- printf("\n Vector #%02d check %s - FAILURE:\n", num, name);
- printf("\n Expected: %d, computed: %d\n\n", expected, computed);
- exit(-1);
+int check_ecc_result(const int num, const char *name,
+ const unsigned int *expected,
+ const unsigned int *computed,
+ const unsigned int num_word32, const bool verbose)
+{
+ uint32_t num_bytes = 4 * num_word32;
+ if (memcmp(computed, expected, num_bytes)) {
+ TC_PRINT("\n Vector #%02d check %s - FAILURE:\n\n", num, name);
+ print_ecc_scalar("Expected", expected, num_word32);
+ print_ecc_scalar("Computed", computed, num_word32);
+ TC_PRINT("\n");
+ return TC_FAIL;
}
+ if (verbose) {
+ TC_PRINT(" Vector #%02d check %s - success\n", num, name);
+ }
+ return TC_PASS;
+}
- if (verbose)
- printf(" Vector #%02d check %s - success (%d=%d)\n",
- num,
- name,
- expected,
- computed);
+int check_code(const int num, const char *name, const int expected,
+ const int computed, const int verbose)
+{
-}
+ if (expected != computed) {
+ TC_ERROR("\n Vector #%02d check %s - FAILURE:\n", num, name);
+ TC_ERROR("\n Expected: %d, computed: %d\n\n", expected, computed);
+ return TC_FAIL;
+ }
-void check_ecc_result(const int num, const char *name,
- const uint32_t *expected,
- const uint32_t *computed,
- const uint32_t num_word32,
- const bool verbose) {
+ if (verbose) {
+ TC_PRINT(" Vector #%02d check %s - success (%d=%d)\n", num, name,
+ expected, computed);
+ }
- uint32_t num_bytes = 4*num_word32;
- if (memcmp(computed, expected, num_bytes)) {
- printf("\n Vector #%02d check %s - FAILURE:\n\n", num, name);
- print_ecc_scalar("Expected", expected, num_word32);
- print_ecc_scalar("Computed", computed, num_word32);
- printf("\n");
- exit(-1);
- }
- if (verbose)
- printf(" Vector #%02d check %s - success\n", num, name);
+ return TC_PASS;
}
/* Test ecc_make_keys, and also as keygen part of other tests */
-EccPoint keygen_vectors(char **d_vec,
- char **qx_vec,
- char **qy_vec,
- int tests,
- bool verbose) {
-
- EccPoint pub;
- uint32_t seed[NUM_ECC_DIGITS * 2];
- uint32_t prv[NUM_ECC_DIGITS];
-
- /* expected outputs (converted input vectors) */
- EccPoint exp_pub;
- uint32_t exp_prv[NUM_ECC_DIGITS];
-
- for (int i=0; i<tests; i++) {
-
- string2scalar(exp_prv, NUM_ECC_DIGITS, d_vec[i]);
- string2scalar(exp_pub.x, NUM_ECC_DIGITS, qx_vec[i]);
- string2scalar(exp_pub.y, NUM_ECC_DIGITS, qy_vec[i]);
-
- /*
- * Feed prvkey vector as padded random seed into ecc_make_key.
- * Internal mod-reduction will be zero-op and generate correct prv/pub
- */
- memset(seed, 0, NUM_ECC_BYTES * 2);
- string2scalar(seed, NUM_ECC_DIGITS, d_vec[i]);
- ecc_make_key(&pub, prv, seed);
-
- // validate correctness of vector conversion and make_key()
- check_ecc_result(i, "prv ", exp_prv, prv, NUM_ECC_DIGITS, verbose);
- check_ecc_result(i, "pub.x", exp_pub.x, pub.x, NUM_ECC_DIGITS, verbose);
- check_ecc_result(i, "pub.y", exp_pub.y, pub.y, NUM_ECC_DIGITS, verbose);
-
- }
- return pub;
+int keygen_vectors(char **d_vec, char **qx_vec, char **qy_vec, int tests,
+ bool verbose)
+{
+
+ unsigned int pub[2 * NUM_ECC_WORDS];
+ unsigned int d[NUM_ECC_WORDS];
+ unsigned int prv[NUM_ECC_WORDS];
+ unsigned int result = TC_PASS;
+
+ /* expected outputs (converted input vectors) */
+ unsigned int exp_pub[2 * NUM_ECC_WORDS];
+ unsigned int exp_prv[NUM_ECC_WORDS];
+
+ for (int i = 0; i < tests; i++) {
+ string2scalar(exp_prv, NUM_ECC_WORDS, d_vec[i]);
+ string2scalar(exp_pub, NUM_ECC_WORDS, qx_vec[i]);
+ string2scalar(exp_pub + NUM_ECC_WORDS, NUM_ECC_WORDS, qy_vec[i]);
+
+ /*
+ * Feed prvkey vector as padded random seed into ecc_make_key.
+ * Internal mod-reduction will be zero-op and generate correct prv/pub
+ */
+ memset(d, 0, NUM_ECC_WORDS);
+ string2scalar(d, NUM_ECC_WORDS, d_vec[i]);
+
+ uint8_t pub_bytes[2*NUM_ECC_BYTES];
+ uint8_t prv_bytes[NUM_ECC_BYTES];
+
+ uECC_make_key_with_d(pub_bytes, prv_bytes, d, uECC_secp256r1());
+
+ uECC_vli_bytesToNative(prv, prv_bytes, NUM_ECC_BYTES);
+ uECC_vli_bytesToNative(pub, pub_bytes, NUM_ECC_BYTES);
+ uECC_vli_bytesToNative(pub + NUM_ECC_WORDS, pub_bytes + NUM_ECC_BYTES, NUM_ECC_BYTES);
+
+ /* validate correctness of vector conversion and make_key() */
+ result = check_ecc_result(i, "prv ", exp_prv, prv, NUM_ECC_WORDS, verbose);
+ if (result == TC_FAIL) {
+ return result;
+ }
+ result = check_ecc_result(i, "pub.x", exp_pub, pub, NUM_ECC_WORDS, verbose);
+ if (result == TC_FAIL) {
+ return result;
+ }
+ result = check_ecc_result(i, "pub.y", exp_pub + NUM_ECC_WORDS, pub + NUM_ECC_WORDS, NUM_ECC_WORDS, verbose);
+ if (result == TC_FAIL) {
+ return result;
+ }
+ }
+ return result;
}
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