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esp-idf/components/wpa_supplicant/test/test_sae.c
Gauri Patankar e055f5ced7 esp_wifi: WPA3 SAE H2E support for station 
Mandate sta threshold wpa3 for ssid after receiving transition disable bit from AP
2022-08-19 15:09:14 +05:30

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/*
* SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifdef CONFIG_WPA3_SAE
#include <stdio.h>
#include <ctype.h>
#include <errno.h>
#include <stdlib.h>
#include <time.h>
#include "unity.h"
#include <string.h>
#include "utils/common.h"
#include "utils/includes.h"
#include "crypto/crypto.h"
#include "../src/common/sae.h"
#include "utils/wpabuf.h"
typedef struct crypto_bignum crypto_bignum;
static struct wpabuf *wpabuf_alloc2(size_t len)
{
struct wpabuf *buf = (struct wpabuf *)os_zalloc(sizeof(struct wpabuf) + len);
if (buf == NULL)
return NULL;
buf->size = len;
buf->buf = (u8 *)(buf+1);
return buf;
}
/**
* * wpabuf_free - Free a wpabuf
* * @buf: wpabuf buffer
* */
void wpabuf_free2(struct wpabuf *buf)
{
if (buf == NULL)
return;
os_free(buf);
}
TEST_CASE("Test SAE functionality with ECC group", "[wpa3_sae]")
{
ESP_LOGI("SAE Test", "### Beginning SAE init and deinit ###");
{
/* Test init and deinit*/
struct sae_data sae;
memset(&sae, 0, sizeof(sae));
TEST_ASSERT(sae_set_group(&sae, IANA_SECP256R1) == 0);
sae_clear_temp_data(&sae);
sae_clear_data(&sae);
}
ESP_LOGI("SAE Test", "=========== Complete ============");
ESP_LOGI("SAE Test", "### Beginning SAE commit msg formation and parsing ###");
{
/* Test SAE commit msg formation and parsing*/
struct sae_data sae;
u8 addr1[ETH_ALEN] = {0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0x11};
u8 addr2[ETH_ALEN] = {0x11, 0x22, 0x33, 0x44, 0x55, 0x66};
u8 pwd[] = "ESP32-WPA3";
struct wpabuf *buf;
int default_groups[] = { IANA_SECP256R1, 0 };
memset(&sae, 0, sizeof(sae));
TEST_ASSERT(sae_set_group(&sae, IANA_SECP256R1) == 0);
TEST_ASSERT(sae_prepare_commit(addr1, addr2, pwd, strlen((const char *)pwd), &sae) == 0);
buf = wpabuf_alloc2(SAE_COMMIT_MAX_LEN);
TEST_ASSERT( buf != NULL);
sae_write_commit(&sae, buf, NULL, NULL);// No anti-clogging token
/* Parsing commit created by self will be detected as reflection attack*/
TEST_ASSERT(sae_parse_commit(&sae,
wpabuf_mhead(buf), buf->used, NULL, 0, default_groups, 0) == SAE_SILENTLY_DISCARD);
wpabuf_free2(buf);
sae_clear_temp_data(&sae);
sae_clear_data(&sae);
}
ESP_LOGI("SAE Test", "=========== Complete ============");
ESP_LOGI("SAE Test", "### Beginning SAE handshake ###");
{
/* SAE handshake*/
struct sae_data sae1; // STA1 data
struct sae_data sae2; // STA2 data
u8 addr1[ETH_ALEN] = {0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0x11};
u8 addr2[ETH_ALEN] = {0x11, 0x22, 0x33, 0x44, 0x55, 0x66};
u8 pwd[] = "ESP32-WPA3";
memset(&sae1, 0, sizeof(sae1));
memset(&sae2, 0, sizeof(sae2));
struct wpabuf *buf1, *buf2, *buf3, *buf4;
int default_groups[] = { IANA_SECP256R1, 0 };
TEST_ASSERT(sae_set_group(&sae1, IANA_SECP256R1) == 0);
TEST_ASSERT(sae_set_group(&sae2, IANA_SECP256R1) == 0);
/* STA1 prepares for commit*/
TEST_ASSERT(sae_prepare_commit(addr1, addr2, pwd, strlen((const char *)pwd), &sae1) == 0);
/* STA2 prepares for commit*/
TEST_ASSERT(sae_prepare_commit(addr2, addr1, pwd, strlen((const char *)pwd), &sae2) == 0);
/* STA1 creates commit msg buffer*/
buf1 = wpabuf_alloc2(SAE_COMMIT_MAX_LEN);
TEST_ASSERT( buf1 != NULL);
sae_write_commit(&sae1, buf1, NULL, NULL);// No anti-clogging token
ESP_LOG_BUFFER_HEXDUMP("SAE: Commit1", wpabuf_mhead_u8(buf1), wpabuf_len(buf1), ESP_LOG_INFO);
/* STA2 creates commit msg buffer*/
buf2 = wpabuf_alloc2(SAE_COMMIT_MAX_LEN);
TEST_ASSERT( buf2 != NULL);
sae_write_commit(&sae2, buf2, NULL, NULL);// No anti-clogging token
ESP_LOG_BUFFER_HEXDUMP("SAE: Commit2", wpabuf_mhead_u8(buf2), wpabuf_len(buf2), ESP_LOG_INFO);
sae1.state = SAE_COMMITTED;
sae2.state = SAE_COMMITTED;
/* STA1 parses STA2 commit*/
TEST_ASSERT(sae_parse_commit(&sae1,
wpabuf_mhead(buf2), buf2->used, NULL, 0, default_groups, 0) == 0);
/* STA2 parses STA1 commit*/
TEST_ASSERT(sae_parse_commit(&sae2,
wpabuf_mhead(buf1), buf1->used, NULL, 0, default_groups, 0) == 0);
/* STA1 processes commit*/
TEST_ASSERT(sae_process_commit(&sae1) == 0);
/* STA2 processes commit*/
TEST_ASSERT(sae_process_commit(&sae2) == 0);
/* STA1 creates confirm msg buffer*/
buf3 = wpabuf_alloc2(SAE_COMMIT_MAX_LEN);
TEST_ASSERT( buf3 != NULL);
sae_write_confirm(&sae1, buf3);
ESP_LOG_BUFFER_HEXDUMP("SAE: Confirm1", wpabuf_mhead_u8(buf3), wpabuf_len(buf3), ESP_LOG_INFO);
/* STA2 creates confirm msg buffer*/
buf4 = wpabuf_alloc2(SAE_COMMIT_MAX_LEN);
TEST_ASSERT( buf3 != NULL);
sae_write_confirm(&sae2, buf4);
ESP_LOG_BUFFER_HEXDUMP("SAE: Confirm2", wpabuf_mhead_u8(buf4), wpabuf_len(buf4), ESP_LOG_INFO);
/* STA1 checks confirm from STA2*/
TEST_ASSERT(sae_check_confirm(&sae1, wpabuf_mhead(buf4), buf4->used) == 0);
/* STA2 checks confirm from STA1*/
TEST_ASSERT(sae_check_confirm(&sae2, wpabuf_mhead(buf3), buf3->used) == 0);
ESP_LOG_BUFFER_HEXDUMP("SAE: PMK1", sae1.pmk, SAE_PMK_LEN, ESP_LOG_INFO);
ESP_LOG_BUFFER_HEXDUMP("SAE: PMK2", sae2.pmk, SAE_PMK_LEN, ESP_LOG_INFO);
wpabuf_free2(buf1);
wpabuf_free2(buf2);
wpabuf_free2(buf3);
wpabuf_free2(buf4);
sae_clear_temp_data(&sae1);
sae_clear_temp_data(&sae2);
sae_clear_data(&sae1);
sae_clear_data(&sae2);
}
ESP_LOGI("SAE Test", "=========== Complete ============");
ESP_LOGI("SAE Test", "### SAE handshake negative testcase. ###");
{
/* SAE handshake failure when different passwords are used.*/
struct sae_data sae1; // STA1 data
struct sae_data sae2; // STA2 data
u8 addr1[ETH_ALEN] = {0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0x11};
u8 addr2[ETH_ALEN] = {0x11, 0x22, 0x33, 0x44, 0x55, 0x66};
u8 pwd1[] = "abcd1234";
u8 pwd2[] = "wxyz5678";
memset(&sae1, 0, sizeof(sae1));
memset(&sae2, 0, sizeof(sae2));
struct wpabuf *buf1, *buf2, *buf3, *buf4;
int default_groups[] = { IANA_SECP256R1, 0 };
TEST_ASSERT(sae_set_group(&sae1, IANA_SECP256R1) == 0);
TEST_ASSERT(sae_set_group(&sae2, IANA_SECP256R1) == 0);
/* STA1 prepares for commit*/
TEST_ASSERT(sae_prepare_commit(addr1, addr2, pwd1, strlen((const char *)pwd1), &sae1) == 0);
/* STA2 prepares for commit*/
TEST_ASSERT(sae_prepare_commit(addr2, addr1, pwd2, strlen((const char *)pwd2), &sae2) == 0);
/* STA1 creates commit msg buffer*/
buf1 = wpabuf_alloc2(SAE_COMMIT_MAX_LEN);
TEST_ASSERT( buf1 != NULL);
sae_write_commit(&sae1, buf1, NULL, NULL);// No anti-clogging token
/* STA2 creates commit msg buffer*/
buf2 = wpabuf_alloc2(SAE_COMMIT_MAX_LEN);
TEST_ASSERT( buf2 != NULL);
sae_write_commit(&sae2, buf2, NULL, NULL);// No anti-clogging token
sae1.state = SAE_COMMITTED;
sae2.state = SAE_COMMITTED;
/* STA1 parses STA2 commit*/
TEST_ASSERT(sae_parse_commit(&sae1,
wpabuf_mhead(buf2), buf2->used, NULL, 0, default_groups, 0) == 0);
/* STA2 parses STA1 commit*/
TEST_ASSERT(sae_parse_commit(&sae2,
wpabuf_mhead(buf1), buf1->used, NULL, 0, default_groups, 0) == 0);
/* STA1 processes commit*/
TEST_ASSERT(sae_process_commit(&sae1) == 0);
/* STA2 processes commit*/
TEST_ASSERT(sae_process_commit(&sae2) == 0);
/* STA1 creates confirm msg buffer*/
buf3 = wpabuf_alloc2(SAE_COMMIT_MAX_LEN);
TEST_ASSERT( buf3 != NULL);
sae_write_confirm(&sae1, buf3);
/* STA2 creates confirm msg buffer*/
buf4 = wpabuf_alloc2(SAE_COMMIT_MAX_LEN);
TEST_ASSERT( buf3 != NULL);
sae_write_confirm(&sae2, buf4);
/* STA1 checks confirm from STA2 and the check fails*/
TEST_ASSERT(sae_check_confirm(&sae1, wpabuf_mhead(buf4), buf4->used) != 0);
/* STA2 checks confirm from STA1 and the check fails*/
TEST_ASSERT(sae_check_confirm(&sae2, wpabuf_mhead(buf3), buf3->used) != 0);
wpabuf_free2(buf1);
wpabuf_free2(buf2);
wpabuf_free2(buf3);
wpabuf_free2(buf4);
sae_clear_temp_data(&sae1);
sae_clear_temp_data(&sae2);
sae_clear_data(&sae1);
sae_clear_data(&sae2);
}
ESP_LOGI("SAE Test", "=========== Complete ============");
}
#endif /* CONFIG_WPA3_SAE */
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