mirror of
https://github.com/espressif/esp-idf.git
synced 2024-10-05 20:47:46 -04:00
ad7cb5f5c1
This commit add following crypto changes 1. Update current crypto code with upstream supplicant code 2. Add a proper porting layer to use mbedtls APIs for all the crypto operations used by supplicant. Internal crypto will be used when USE_MBEDLTS flag is disabled in supplicant's menuconfig. This commit also removes the clutter in crypto files due to partial porting of some APIs to mbedtls, all the code from those files have been removed and rewritten in a generic way, this is inspired from current upstream code. This also reduces the lib size significantly, supplicant's lib size reduces around ~567kb after this change(NB: lib size doesn't indicate reduction in final bin size).
547 lines
17 KiB
C
547 lines
17 KiB
C
// Copyright 2015-2018 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <stdio.h>
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#include <ctype.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <time.h>
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#include "unity.h"
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#include <string.h>
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#include "utils/common.h"
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#include "utils/includes.h"
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#include "crypto/crypto.h"
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#include "mbedtls/ecp.h"
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typedef struct crypto_bignum crypto_bignum;
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TEST_CASE("Test crypto lib bignum apis", "[wpa_crypto]")
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{
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{
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uint8_t buf[32], buf2[32];
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/* BN - Init & Deinit*/
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crypto_bignum *bn = crypto_bignum_init();
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crypto_bignum_deinit(bn, 1);
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/* BN - Binary to bignum & bignum to binary*/
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TEST_ASSERT(!os_get_random(buf, 32));
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bn = crypto_bignum_init_set(buf, 32);
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TEST_ASSERT_NOT_NULL(bn);
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TEST_ASSERT(crypto_bignum_to_bin(bn, buf2, 32, 0) == 32);
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TEST_ASSERT(!memcmp(buf, buf2, 32));
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crypto_bignum_deinit(bn, 1);
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}
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{ /** BN summation*/
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uint8_t buf1[32], buf2[32], buf3[32], buf4[32];
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crypto_bignum *bn1, *bn2, *sum;
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uint8_t count;
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sum = crypto_bignum_init();
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for (count = 0; count < 32; count++) {
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buf1[count] = 0x11;
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buf2[count] = 0x22;
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buf3[count] = 0x33; //expected result
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buf4[count] = 0x0; //Calculated result
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}
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bn1 = crypto_bignum_init_set(buf1, 32);
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TEST_ASSERT_NOT_NULL(bn1);
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bn2 = crypto_bignum_init_set(buf2, 32);
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TEST_ASSERT_NOT_NULL(bn2);
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TEST_ASSERT(crypto_bignum_add(bn1, bn2, sum) == 0);
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TEST_ASSERT(crypto_bignum_to_bin(sum, buf4, 32, 0) == 32);
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TEST_ASSERT(!memcmp(buf3, buf4, 32));
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crypto_bignum_deinit(bn1, 1);
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crypto_bignum_deinit(bn2, 1);
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crypto_bignum_deinit(sum, 1);
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}
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{ /** BN mod*/
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uint8_t buf1[32], buf2[32], buf3[32], buf4[32];
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crypto_bignum *bn1, *bn2, *mod;
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uint8_t count;
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mod = crypto_bignum_init();
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for (count = 0; count < 32; count++) {
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buf1[count] = 0x33;
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buf2[count] = 0x22;
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buf3[count] = 0x11; //expected result
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buf4[count] = 0x0; //Calculated result
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}
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bn1 = crypto_bignum_init_set(buf1, 32);
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TEST_ASSERT_NOT_NULL(bn1);
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bn2 = crypto_bignum_init_set(buf2, 32);
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TEST_ASSERT_NOT_NULL(bn2);
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TEST_ASSERT(crypto_bignum_mod(bn1, bn2, mod) == 0);
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TEST_ASSERT(crypto_bignum_to_bin(mod, buf4, 32, 0) == 32);
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TEST_ASSERT(!memcmp(buf3, buf4, 32));
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crypto_bignum_deinit(bn1, 1);
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crypto_bignum_deinit(bn2, 1);
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crypto_bignum_deinit(mod, 1);
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}
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{ /** BN sub*/
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uint8_t buf1[32], buf2[32], buf3[32], buf4[32];
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crypto_bignum *bn1, *bn2, *sub;
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uint8_t count;
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sub = crypto_bignum_init();
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for (count = 0; count < 32; count++) {
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buf1[count] = 0x44;
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buf2[count] = 0x11;
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buf3[count] = 0x33; //expected result
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buf4[count] = 0x0; //Calculated result
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}
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bn1 = crypto_bignum_init_set(buf1, 32);
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TEST_ASSERT_NOT_NULL(bn1);
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bn2 = crypto_bignum_init_set(buf2, 32);
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TEST_ASSERT_NOT_NULL(bn2);
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TEST_ASSERT(crypto_bignum_sub(bn1, bn2, sub) == 0);
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TEST_ASSERT(crypto_bignum_to_bin(sub, buf4, 32, 0) == 32);
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TEST_ASSERT(!memcmp(buf3, buf4, 32));
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crypto_bignum_deinit(bn1, 1);
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crypto_bignum_deinit(bn2, 1);
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crypto_bignum_deinit(sub, 1);
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}
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{ /** BN div*/
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uint8_t buf1[32], buf2[32], buf3[32], buf4[32];
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crypto_bignum *bn1, *bn2, *div;
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uint8_t count;
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div = crypto_bignum_init();
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for (count = 0; count < 32; count++) {
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buf1[count] = 0x44;
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buf2[count] = 0x22;
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buf3[count] = count ? 0 : 0x2; //expected result
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buf4[count] = 0x0; //Calculated result
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}
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bn1 = crypto_bignum_init_set(buf1, 32);
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TEST_ASSERT_NOT_NULL(bn1);
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bn2 = crypto_bignum_init_set(buf2, 32);
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TEST_ASSERT_NOT_NULL(bn2);
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TEST_ASSERT(crypto_bignum_div(bn1, bn2, div) == 0);
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TEST_ASSERT(crypto_bignum_to_bin(div, buf4, 32, 0) == 1);
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TEST_ASSERT(!memcmp(buf3, buf4, 1));
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crypto_bignum_deinit(bn1, 1);
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crypto_bignum_deinit(bn2, 1);
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crypto_bignum_deinit(div, 1);
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}
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{ /** BN mul mod*/
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uint8_t buf1[32], buf2[32], buf3[32], buf4[32], buf5[32];
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crypto_bignum *bn1, *bn2, *bn3, *mulmod;
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uint8_t count;
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for (count = 0; count < 32; count++) {
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buf1[count] = 0x22;
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buf2[count] = 0x11;
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buf3[count] = (count < 4) ? 0x21 : 0;
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buf4[count] = (count < 4) ? 0x14 : 0;
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buf5[count] = 0;
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}
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mulmod = crypto_bignum_init();
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bn1 = crypto_bignum_init_set(buf1, 32);
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TEST_ASSERT_NOT_NULL(bn1);
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bn2 = crypto_bignum_init_set(buf2, 32);
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TEST_ASSERT_NOT_NULL(bn2);
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bn3 = crypto_bignum_init_set(buf3, 4);
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TEST_ASSERT_NOT_NULL(bn3);
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TEST_ASSERT(crypto_bignum_mulmod(bn1, bn2, bn3, mulmod) == 0);
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TEST_ASSERT(crypto_bignum_to_bin(mulmod, buf5, 32, 0) == 4);
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TEST_ASSERT(!memcmp(buf5, buf4, 4));
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crypto_bignum_deinit(bn1, 1);
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crypto_bignum_deinit(bn2, 1);
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crypto_bignum_deinit(bn3, 1);
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crypto_bignum_deinit(mulmod, 1);
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}
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{ /** BN exp mod*/
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uint8_t buf1[32], buf2[32], buf3[32], buf4[32], buf5[32];
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crypto_bignum *bn1, *bn2, *bn3, *expmod;
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uint8_t count;
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expmod = crypto_bignum_init();
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for (count = 0; count < 32; count++) {
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buf1[count] = 0x22;
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buf2[count] = (count >= 30) ? 0x11 : 0;
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buf3[count] = (count >= 31) ? 0xE9 : 0;
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buf4[count] = count ? 0 : 0x62;
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buf5[count] = 0;
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}
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bn1 = crypto_bignum_init_set(buf1, 32);
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TEST_ASSERT_NOT_NULL(bn1);
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bn2 = crypto_bignum_init_set(buf2, 32);
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TEST_ASSERT_NOT_NULL(bn2);
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bn3 = crypto_bignum_init_set(buf3, 32);
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TEST_ASSERT_NOT_NULL(bn3);
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TEST_ASSERT(crypto_bignum_exptmod(bn1, bn2, bn3, expmod) == 0);
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TEST_ASSERT(crypto_bignum_to_bin(expmod, buf5, 32, 0) == 1);
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TEST_ASSERT(!memcmp(buf5, buf4, 1));
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crypto_bignum_deinit(bn1, 1);
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crypto_bignum_deinit(bn2, 1);
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crypto_bignum_deinit(bn3, 1);
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crypto_bignum_deinit(expmod, 1);
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}
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{ /** BN Legendre symbol test*/
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uint8_t buf1[32], buf2[32];
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crypto_bignum *bn1, *bn2;
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buf1[0] = 0xf;
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buf2[0] = 0x11;
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bn1 = crypto_bignum_init_set(buf1, 1);
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TEST_ASSERT_NOT_NULL(bn1);
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bn2 = crypto_bignum_init_set(buf2, 1);
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TEST_ASSERT_NOT_NULL(bn2);
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TEST_ASSERT(crypto_bignum_legendre(bn1, bn2) == 1);
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crypto_bignum_deinit(bn1, 1);
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buf1[0] = 0xa;
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bn1 = crypto_bignum_init_set(buf1, 1);
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TEST_ASSERT_NOT_NULL(bn1);
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TEST_ASSERT(crypto_bignum_legendre(bn1, bn2) == -1);
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crypto_bignum_deinit(bn1, 1);
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buf1[0] = 0x11;
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bn1 = crypto_bignum_init_set(buf1, 1);
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TEST_ASSERT_NOT_NULL(bn1);
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TEST_ASSERT(crypto_bignum_legendre(bn1, bn2) == 0);
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crypto_bignum_deinit(bn1, 1);
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crypto_bignum_deinit(bn2, 1);
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}
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}
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/*
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* Conversion macros for embedded constants:
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* build lists of mbedtls_mpi_uint's from lists of unsigned char's grouped by 8, 4 or 2
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*/
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#if defined(MBEDTLS_HAVE_INT32)
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#define BYTES_TO_T_UINT_4( a, b, c, d ) \
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( (mbedtls_mpi_uint) a << 0 ) | \
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( (mbedtls_mpi_uint) b << 8 ) | \
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( (mbedtls_mpi_uint) c << 16 ) | \
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( (mbedtls_mpi_uint) d << 24 )
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#define BYTES_TO_T_UINT_2( a, b ) \
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BYTES_TO_T_UINT_4( a, b, 0, 0 )
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#define BYTES_TO_T_UINT_8( a, b, c, d, e, f, g, h ) \
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BYTES_TO_T_UINT_4( a, b, c, d ), \
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BYTES_TO_T_UINT_4( e, f, g, h )
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#else /* 64-bits */
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#define BYTES_TO_T_UINT_8( a, b, c, d, e, f, g, h ) \
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( (mbedtls_mpi_uint) a << 0 ) | \
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( (mbedtls_mpi_uint) b << 8 ) | \
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( (mbedtls_mpi_uint) c << 16 ) | \
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( (mbedtls_mpi_uint) d << 24 ) | \
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( (mbedtls_mpi_uint) e << 32 ) | \
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( (mbedtls_mpi_uint) f << 40 ) | \
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( (mbedtls_mpi_uint) g << 48 ) | \
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( (mbedtls_mpi_uint) h << 56 )
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#define BYTES_TO_T_UINT_4( a, b, c, d ) \
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BYTES_TO_T_UINT_8( a, b, c, d, 0, 0, 0, 0 )
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#define BYTES_TO_T_UINT_2( a, b ) \
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BYTES_TO_T_UINT_8( a, b, 0, 0, 0, 0, 0, 0 )
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#endif /* bits in mbedtls_mpi_uint */
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/*
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* Create an MPI from embedded constants
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* (assumes len is an exact multiple of sizeof mbedtls_mpi_uint)
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* Allocate a new memory as well so that it can be freed.
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*/
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static inline void ecp_mpi_load( mbedtls_mpi *X, const mbedtls_mpi_uint *p, size_t len )
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{
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X->s = 1;
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X->n = len / sizeof( mbedtls_mpi_uint );
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X->p = os_zalloc(len);
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memcpy(X->p, (void *)p, len);
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}
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TEST_CASE("Test crypto lib ECC apis", "[wpa_crypto]")
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{
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static const mbedtls_mpi_uint secp256r1_gx[] = {
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BYTES_TO_T_UINT_8( 0x96, 0xC2, 0x98, 0xD8, 0x45, 0x39, 0xA1, 0xF4 ),
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BYTES_TO_T_UINT_8( 0xA0, 0x33, 0xEB, 0x2D, 0x81, 0x7D, 0x03, 0x77 ),
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BYTES_TO_T_UINT_8( 0xF2, 0x40, 0xA4, 0x63, 0xE5, 0xE6, 0xBC, 0xF8 ),
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BYTES_TO_T_UINT_8( 0x47, 0x42, 0x2C, 0xE1, 0xF2, 0xD1, 0x17, 0x6B ),
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};
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static const mbedtls_mpi_uint secp256r1_gy[] = {
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BYTES_TO_T_UINT_8( 0xF5, 0x51, 0xBF, 0x37, 0x68, 0x40, 0xB6, 0xCB ),
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BYTES_TO_T_UINT_8( 0xCE, 0x5E, 0x31, 0x6B, 0x57, 0x33, 0xCE, 0x2B ),
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BYTES_TO_T_UINT_8( 0x16, 0x9E, 0x0F, 0x7C, 0x4A, 0xEB, 0xE7, 0x8E ),
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BYTES_TO_T_UINT_8( 0x9B, 0x7F, 0x1A, 0xFE, 0xE2, 0x42, 0xE3, 0x4F ),
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};
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{
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/* Check init and deinit APIs*/
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struct crypto_ec *e = crypto_ec_init(19);
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struct crypto_ec_point *pt = crypto_ec_point_init(e);
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crypto_ec_point_deinit(pt, 1);
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crypto_ec_deinit(e);
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}
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{
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uint8_t pt1[64], pt2[64];
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struct crypto_ec *e = crypto_ec_init(19);
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struct crypto_ec_point *p;
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TEST_ASSERT_NOT_NULL(e);
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/* Note this is just testing coversion & not whether point is
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* in the group or not*/
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TEST_ASSERT(!os_get_random(pt1, 64));
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p = crypto_ec_point_from_bin(e, pt1);
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TEST_ASSERT(crypto_ec_prime_len(e) == 32);
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TEST_ASSERT(crypto_ec_point_to_bin(e, p, pt2, &pt2[32]) == 0);
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TEST_ASSERT(!memcmp(pt1, pt2, sizeof(pt1)));
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crypto_ec_point_deinit(p, 1);
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crypto_ec_deinit(e);
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}
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{
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/* Check addition and multiplication APIs
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* yield the same answer.
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*/
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struct crypto_ec *e = crypto_ec_init(19);
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struct crypto_ec_point *p = crypto_ec_point_init(e);
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struct crypto_ec_point *q = crypto_ec_point_init(e);
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struct crypto_ec_point *r = crypto_ec_point_init(e);
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mbedtls_mpi num;
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TEST_ASSERT_NOT_NULL(e);
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TEST_ASSERT_NOT_NULL(p);
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TEST_ASSERT_NOT_NULL(q);
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TEST_ASSERT_NOT_NULL(r);
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mbedtls_mpi_init( &num );
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mbedtls_mpi_lset( &num, 3 );
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ecp_mpi_load(& ((mbedtls_ecp_point *)p)->X, secp256r1_gx, sizeof(secp256r1_gx));
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ecp_mpi_load(& ((mbedtls_ecp_point *)p)->Y, secp256r1_gy, sizeof(secp256r1_gy));
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mbedtls_mpi_lset((&((mbedtls_ecp_point *)p)->Z), 1);
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TEST_ASSERT(crypto_ec_point_mul(e, p, (crypto_bignum *) &num, q) == 0); //q = 3p
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TEST_ASSERT(crypto_ec_point_add(e, p, p, r) == 0);
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TEST_ASSERT(crypto_ec_point_add(e, p, r, r) == 0);
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TEST_ASSERT(crypto_ec_point_cmp(e, q, r) == 0);
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mbedtls_mpi_free( &num );
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crypto_ec_point_deinit(p, 1);
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crypto_ec_point_deinit(q, 1);
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crypto_ec_point_deinit(r, 1);
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crypto_ec_deinit(e);
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}
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{
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/* Generate a point using generator and take its inverse
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* Check that adding point to inverse yields identity
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*/
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struct crypto_ec *e = crypto_ec_init(19);
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struct crypto_ec_point *p = crypto_ec_point_init(e);
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struct crypto_ec_point *q = crypto_ec_point_init(e);
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struct crypto_ec_point *r = crypto_ec_point_init(e);
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mbedtls_mpi num;
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TEST_ASSERT_NOT_NULL(e);
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TEST_ASSERT_NOT_NULL(p);
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TEST_ASSERT_NOT_NULL(q);
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TEST_ASSERT_NOT_NULL(r);
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mbedtls_mpi_init( &num );
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mbedtls_mpi_lset( &num, 100 );
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ecp_mpi_load(& ((mbedtls_ecp_point *)p)->X, secp256r1_gx, sizeof(secp256r1_gx));
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ecp_mpi_load(& ((mbedtls_ecp_point *)p)->Y, secp256r1_gy, sizeof(secp256r1_gy));
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mbedtls_mpi_lset((&((mbedtls_ecp_point *)p)->Z), 1);
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TEST_ASSERT(crypto_ec_point_mul(e, p, (crypto_bignum *) &num, q) == 0);
|
|
TEST_ASSERT(crypto_ec_point_mul(e, p, (crypto_bignum *) &num, r) == 0);
|
|
|
|
TEST_ASSERT(crypto_ec_point_invert(e, r) == 0);
|
|
TEST_ASSERT(crypto_ec_point_add(e, q, r, r) == 0);
|
|
|
|
TEST_ASSERT(crypto_ec_point_is_at_infinity(e, r));
|
|
|
|
mbedtls_mpi_free( &num );
|
|
crypto_ec_point_deinit(p, 1);
|
|
crypto_ec_point_deinit(q, 1);
|
|
crypto_ec_point_deinit(r, 1);
|
|
crypto_ec_deinit(e);
|
|
|
|
}
|
|
{
|
|
/* Check y_sqr calculations and other dependent APIs */
|
|
|
|
struct crypto_ec *e = crypto_ec_init(19);
|
|
|
|
struct crypto_ec_point *p = crypto_ec_point_init(e);
|
|
struct crypto_ec_point *q = crypto_ec_point_init(e);
|
|
mbedtls_mpi num;
|
|
|
|
TEST_ASSERT_NOT_NULL(e);
|
|
TEST_ASSERT_NOT_NULL(p);
|
|
TEST_ASSERT_NOT_NULL(q);
|
|
|
|
mbedtls_mpi_init( &num );
|
|
mbedtls_mpi_lset( &num, 50 );
|
|
|
|
ecp_mpi_load(& ((mbedtls_ecp_point *)p)->X, secp256r1_gx, sizeof(secp256r1_gx));
|
|
ecp_mpi_load(& ((mbedtls_ecp_point *)p)->Y, secp256r1_gy, sizeof(secp256r1_gy));
|
|
|
|
mbedtls_mpi_lset((&((mbedtls_ecp_point *)p)->Z), 1);
|
|
|
|
/* Generator should always be on the curve*/
|
|
TEST_ASSERT(crypto_ec_point_is_on_curve(e, p));
|
|
|
|
/* Any point generated using generated should also be on the same curve*/
|
|
TEST_ASSERT(crypto_ec_point_mul(e, p, (crypto_bignum *) &num, q) == 0);
|
|
TEST_ASSERT(crypto_ec_point_is_on_curve(e, q));
|
|
|
|
|
|
mbedtls_mpi_free( &num );
|
|
crypto_ec_point_deinit(p, 1);
|
|
crypto_ec_point_deinit(q, 1);
|
|
crypto_ec_deinit(e);
|
|
|
|
}
|
|
|
|
{
|
|
/* crypto_ec_point_solve_y_coord APIs*/
|
|
|
|
struct crypto_ec *e = crypto_ec_init(19);
|
|
|
|
struct crypto_ec_point *p = crypto_ec_point_init(e);
|
|
struct crypto_ec_point *q = crypto_ec_point_init(e);
|
|
struct crypto_ec_point *r = crypto_ec_point_init(e);
|
|
mbedtls_mpi num;
|
|
|
|
TEST_ASSERT_NOT_NULL(e);
|
|
TEST_ASSERT_NOT_NULL(p);
|
|
TEST_ASSERT_NOT_NULL(q);
|
|
TEST_ASSERT_NOT_NULL(r);
|
|
|
|
mbedtls_mpi_init( &num );
|
|
mbedtls_mpi_lset( &num, 50 );
|
|
|
|
ecp_mpi_load(& ((mbedtls_ecp_point *)p)->X, secp256r1_gx, sizeof(secp256r1_gx));
|
|
ecp_mpi_load(& ((mbedtls_ecp_point *)p)->Y, secp256r1_gy, sizeof(secp256r1_gy));
|
|
|
|
mbedtls_mpi_lset((&((mbedtls_ecp_point *)p)->Z), 1);
|
|
|
|
mbedtls_mpi_copy(&((mbedtls_ecp_point *)q)->X, &((mbedtls_ecp_point *)p)->X);
|
|
mbedtls_mpi_copy(&((mbedtls_ecp_point *)r)->X, &((mbedtls_ecp_point *)p)->X);
|
|
|
|
mbedtls_mpi_lset((&((mbedtls_ecp_point *)q)->Z), 1);
|
|
mbedtls_mpi_lset((&((mbedtls_ecp_point *)r)->Z), 1);
|
|
|
|
TEST_ASSERT(crypto_ec_point_solve_y_coord(e, q, (crypto_bignum *) & ((mbedtls_ecp_point *)q)->X, 0) == 0);
|
|
TEST_ASSERT(crypto_ec_point_is_on_curve(e, q));
|
|
|
|
TEST_ASSERT(crypto_ec_point_solve_y_coord(e, r, (crypto_bignum *) & ((mbedtls_ecp_point *)q)->X, 1) == 0);
|
|
TEST_ASSERT(crypto_ec_point_is_on_curve(e, r));
|
|
|
|
TEST_ASSERT((crypto_ec_point_cmp(e, p, q) == 0) || (crypto_ec_point_cmp(e, p, r) == 0));
|
|
|
|
/* The two roots should be inverse of one another*/
|
|
TEST_ASSERT(crypto_ec_point_add(e, q, r, r) == 0);
|
|
TEST_ASSERT(crypto_ec_point_is_at_infinity(e, r));
|
|
|
|
mbedtls_mpi_free( &num );
|
|
crypto_ec_point_deinit(p, 1);
|
|
crypto_ec_point_deinit(q, 1);
|
|
crypto_ec_point_deinit(r, 1);
|
|
crypto_ec_deinit(e);
|
|
|
|
}
|
|
|
|
}
|