#include <stdio.h>
#include <stdbool.h>
#include <string.h>
#include "kdf.h"
#include "log.h"
#include "global.h"

static const char * _kdf2_input = "Test data for kdf2";

static bool
_test_kdf2_sha256_pass()
{
    const uint8_t output_cmp[] = {
            0x85, 0xc0, 0x97, 0xf6, 0x09, 0xfb, 0x8c, 0x9b, 0xe6, 0xc4, 0xfa, 0xf1, 0x10, 0xde, 0xb6, 0xcf,
            0x9a, 0xda, 0xb0, 0xe4, 0x8a, 0x34, 0x50, 0xad, 0x96, 0xcc, 0xb0, 0x7a, 0xd1, 0x78, 0xed, 0xcc,
            0xca, 0x0d, 0x37, 0xfa, 0xc6, 0xba, 0x17, 0x35, 0x2a, 0xcf, 0xb6, 0x38, 0x2b, 0xe4, 0x45, 0xff,
            0xc7, 0x57, 0x15, 0x41, 0x38, 0x66, 0x34, 0xef, 0xb5, 0x5c, 0x7b, 0x06, 0x0a, 0x85, 0x22, 0xfc,
            0x98, 0x30, 0x26, 0x55, 0x71, 0xdd, 0x57, 0xb1, 0xbd, 0x72, 0xdc, 0xf4, 0x9d, 0xb5, 0xa4, 0xb7,
            0xd7, 0x22, 0x12, 0x19, 0x92, 0x59, 0x87, 0x07, 0xf1, 0x59, 0x0e, 0x1f, 0x0f, 0x3f, 0x99, 0x8e
    };

    uint8_t output[96];

    if (IOTELIC_OK != kdf(KDF_2, HASH_SHA_256,
                          (const uint8_t *)_kdf2_input, strlen(_kdf2_input),
                          output, sizeof(output))) {
        return KDF_ERROR_GENERAL;
    }

    return 0 == memcmp(output_cmp, output, sizeof(output));
}

static bool
_test_kdf2_sha384_pass()
{
    const uint8_t output_cmp[] = {
            0xf8, 0xcb, 0x2b, 0x97, 0x55, 0xbd, 0xae, 0xdb, 0xb4, 0xcf, 0x97, 0x36, 0x00, 0xb9, 0x2f, 0x13,
            0x49, 0xd9, 0x9d, 0xd3, 0x79, 0x09, 0x92, 0x78, 0x38, 0x55, 0x77, 0x35, 0x22, 0x55, 0x82, 0x53,
            0x4b, 0xc0, 0x85, 0x40, 0xf1, 0xad, 0x73, 0x50, 0x4d, 0x71, 0x7f, 0x79, 0x99, 0x1c, 0x36, 0x63,
            0x0a, 0x81, 0xbc, 0x72, 0x58, 0x52, 0x35, 0xc9, 0xbb, 0x3d, 0xda, 0x11, 0x26, 0xc4, 0xee, 0xd2,
            0x51, 0xf7, 0x78, 0x33, 0xfd, 0x28, 0xdc, 0xca, 0x6d, 0x80, 0xa5, 0xea, 0x7f, 0x8d, 0xe1, 0xd1,
            0xde, 0x90, 0x78, 0xa3, 0x00, 0xf3, 0xa4, 0xb3, 0x7a, 0x70, 0x57, 0x97, 0xd0, 0x5d, 0xd6, 0xb9

    };

    uint8_t output[96];

    if (IOTELIC_OK != kdf(KDF_2, HASH_SHA_384,
                          (const uint8_t *)_kdf2_input, strlen(_kdf2_input),
                          output, sizeof(output))) {
        return KDF_ERROR_GENERAL;
    }

    return 0 == memcmp(output_cmp, output, sizeof(output));
}

static bool
_test_kdf2_sha512_pass()
{
    const uint8_t output_cmp[] = {
            0xfe, 0x4f, 0xc9, 0x6e, 0xc9, 0x31, 0xde, 0x14, 0x3d, 0xec, 0x5f, 0x73, 0x5e, 0xae, 0xe3, 0xd4,
            0xb0, 0x62, 0xc8, 0x29, 0x9f, 0x45, 0xe8, 0xb9, 0xea, 0xaf, 0xed, 0xe7, 0x5e, 0x33, 0x2a, 0x91,
            0x97, 0x01, 0x4b, 0x31, 0x7d, 0xfb, 0x2e, 0xed, 0x75, 0x27, 0x68, 0xa3, 0xc2, 0xb4, 0x25, 0xa4,
            0xee, 0x9b, 0x1f, 0x53, 0xcb, 0x16, 0x22, 0x51, 0x53, 0x28, 0x2c, 0x28, 0xd7, 0xcb, 0xb8, 0xfc,
            0x2c, 0xab, 0xc7, 0x95, 0x1e, 0xb0, 0x6c, 0x39, 0x6b, 0x5b, 0xda, 0x0d, 0x42, 0x17, 0xab, 0x03,
            0x51, 0xc8, 0x15, 0x48, 0x68, 0x9c, 0xbc, 0x23, 0x91, 0xe6, 0x8a, 0xf2, 0x2c, 0xb2, 0x96, 0xc2

    };

    uint8_t output[96];

    if (IOTELIC_OK != kdf(KDF_2, HASH_SHA_512,
                          (const uint8_t *)_kdf2_input, strlen(_kdf2_input),
                          output, sizeof(output))) {
        return KDF_ERROR_GENERAL;
    }

    return 0 == memcmp(output_cmp, output, sizeof(output));
}

static bool
_test_kdf_sha384_fail()
{
    uint8_t output_cmp[96];
    uint8_t output[96];

    memset(output_cmp, 0xAA, sizeof(output_cmp));

    if (IOTELIC_OK != kdf(KDF_2, HASH_SHA_384,
                          (const uint8_t *)_kdf2_input, strlen(_kdf2_input),
                          output, sizeof(output))) {
        return KDF_ERROR_GENERAL;
    }

    return 0 == memcmp(output_cmp, output, sizeof(output));
}

static bool
_test_hkdf_sha384_pass()
{
    const char * input = "Test input";
    const char * salt = "Test salt";
    const char * info = "Test info";

    const uint8_t hkdf_val_cmp[] = {
            0x8c, 0xf1, 0x41, 0x94, 0x81, 0x14, 0x74, 0xd0, 0xe7, 0x62, 0x6c, 0x86, 0x2f, 0xf8, 0xb1, 0x31,
            0x5c, 0xe8, 0xc4, 0xb9, 0x68, 0xb6, 0x80, 0x27, 0xc1, 0xb7, 0xdd, 0xfd, 0x5b, 0x94, 0xe9, 0x15,
            0x13, 0x9d, 0x3e, 0x86, 0xf1, 0xd6, 0xac, 0xf6, 0xa2, 0xc1, 0x93, 0xa2, 0x6c, 0x4c, 0x2f, 0xb0,
            0xd7, 0xd8, 0x6a, 0xb3, 0x76, 0xc8, 0x25, 0x29, 0x8f, 0x87, 0x58, 0xb7, 0x43, 0xa9, 0xde, 0x8b,
            0x1d, 0xd1, 0x9e, 0x51, 0xa2, 0x09, 0x26, 0xe2, 0x8f, 0xb7, 0x94, 0x52, 0x43, 0x77, 0x5c, 0x28,
            0x9a, 0x43, 0x43, 0x03, 0x14, 0xa5, 0x6a, 0x3d, 0x38, 0x03, 0x26, 0xe8, 0xd9, 0xe5, 0xfe, 0x34,
            0xab, 0xb2, 0x6e, 0x4f, 0x71, 0x0e, 0x9f, 0xd9, 0x7a, 0x34, 0xd8, 0x3d, 0x8f, 0xf0, 0xde, 0xe4,
            0xf9, 0x2a, 0x2d, 0xa4, 0x3b, 0x80, 0x51, 0x95, 0x00, 0xcd, 0xef, 0xbf, 0x35, 0x7c, 0x63, 0x53
    };

    uint8_t hkdf_val[128];
    int shift = 0;

    if (IOTELIC_OK != hkdf(HASH_SHA_384,
                           (uint8_t *)input, strlen(input) + shift,
                           (uint8_t *)salt, strlen(salt) + shift,
                           (uint8_t *)info, strlen(info) + shift,
                           hkdf_val, sizeof(hkdf_val))) {
        return false;
    }

    return 0 == memcmp(hkdf_val_cmp, hkdf_val, sizeof(hkdf_val));
}


bool
test_kdf(void)
{
    if (!_test_kdf2_sha256_pass()) {
        LOG("KDF2 + %s fail", hash_name(HASH_SHA_256));
        return false;
    }
    if (!_test_kdf2_sha384_pass()) {
        LOG("KDF2 + %s fail", hash_name(HASH_SHA_384));
        return false;
    }
    if (!_test_kdf2_sha512_pass()) {
        LOG("KDF2 + %s fail", hash_name(HASH_SHA_512));
        return false;
    }
    if (_test_kdf_sha384_fail()) {
        LOG("Passed wrong usage of KDF. So, it's error.");
        return false;
    }
    if (!_test_hkdf_sha384_pass()) {
        LOG("HKDF + %s fail", hash_name(HASH_SHA_384));
        return false;
    }
    return true;
}