我在处理unicode字符串时遇到问题，wchar_t类型。
在我的程序中，我得到的输入是wchar_t，我应该对它进行异或，然后将其写入文件，读回并将其打印到命令行。
这是我的密码

const unsigned int XORKey = 0xff;


size_t XORit(const wchar_t* value, wchar_t* xorred)
{
    size_t length = wcslen(value);
    for (int i = 0; i < length; i++)
        xorred[i] = ((char)(value[i] ^ XORKey));

    return length;
}

int main()
{
    setlocale(LC_ALL, "en_US.UTF-8");
    // XOR it
    wchar_t sample[] = { L"TEST1自己人" };
    int samplelen = wcslen(sample);
    printf("%ls", sample);
    printf("\n");

    printf("Plain:\n\t");
    for (int i = 0; i < samplelen; i++)
    {
        printf("%02X ", sample[i]);
    }
    printf("\n");


    wchar_t* xorred = (wchar_t*)malloc(samplelen);
    if (xorred == NULL) return -1;
    memset(xorred, 0, samplelen);
    XORit(sample, xorred);
    printf("XOR'ed\n\t");
    for (int i = 0; i < samplelen; i++)
    {
        printf("%02X ", xorred[i]);
    }
    printf("\n");

    // Write to file
    FILE* fpW = _wfopen(L"logon.bin", L"wb");
    fwrite(xorred, sizeof(wchar_t), samplelen, fpW);
    fclose(fpW);

    // Read from file
    FILE* fpR = fopen("logon.bin", "rb");
    fseek(fpR, 0, SEEK_END);
    int filesize = ftell(fpR);
    wchar_t* unxorred = (wchar_t*)malloc(filesize + sizeof(wchar_t));
    if (unxorred == NULL) return -1;

    rewind(fpR);

    fread(unxorred, sizeof(wchar_t), filesize, fpW);
    fclose(fpW);

    printf("Reading\n\t");
    for (int i = 0; i < samplelen; i++)
    {
        printf("%02X ", unxorred[i]);
    }
    printf("\n");

    printf("Un-XOR'ed\n\t");
    for (int i = 0; i < samplelen; i++)
    {
        printf("%02X ", unxorred[i] ^ XORKey);
    }
    printf("\n");
    printf("%ls", unxorred);

    return 0;
}

我从文件中阅读回的值与我写的不匹配！：（我是C编程新手，我尽了最大的努力来做好这件事，请原谅我在理解和实现这个问题时犯的任何错误。
先谢谢你了
我根据注解修改了代码

const unsigned int XORKey = 0xff;


size_t XORit(const wchar_t* value, wchar_t* xorred)
{
    size_t length = wcslen(value);
    for (int i = 0; i < length; i++)
        xorred[i] = (value[i] ^ XORKey);

    return length;
}

int main()
{
    setlocale(LC_ALL, "en_US.UTF-8");
    // XOR it
    wchar_t sample[] = { L"Test1自己人自己人A" };
    int samplelen = wcslen(sample);
    printf("%ls", sample);
    printf("\n");

    printf("Plain:\n\t");
    for (int i = 0; i < samplelen; i++)
    {
        printf("%0*X ", (int)sizeof(wchar_t), (unsigned int)sample[i]);
    }
    printf("\n");


    wchar_t* xorred = (wchar_t*)malloc(samplelen);
    if (xorred == NULL) return -1;
    memset(xorred, 0, samplelen);
    XORit(sample, xorred);
    printf("XOR'ed\n\t");
    for (int i = 0; i < samplelen; i++)
    {
        printf("%0*X ", (int)sizeof(wchar_t), (unsigned int)xorred[i]);
    }
    printf("\n");

    // Write to file
    FILE* fpW = _wfopen(L"logon.bin", L"wb");
    fwrite(xorred, sizeof(wchar_t), samplelen, fpW);
    fclose(fpW);

    // Read from file
    FILE* fpR = fopen("logon.bin", "rb");
    fseek(fpR, 0, SEEK_END);
    int filesize = ftell(fpR);
    int whattoread = (filesize / sizeof(wchar_t));
    wchar_t* ReadXOR = (wchar_t*)malloc(filesize + 1);
    if (ReadXOR == NULL) return -1;
    memset(ReadXOR, 0, filesize + 1);

    rewind(fpR);

    fread(ReadXOR, sizeof(wchar_t), whattoread, fpR);
    fclose(fpW);

    printf("Reading\n\t");
    for (int i = 0; i < samplelen; i++)
    {
        printf("%0*X ", (int)sizeof(wchar_t), (unsigned int)ReadXOR[i]);
    }
    printf("\n");

    wchar_t* unxorred = (wchar_t*)malloc(whattoread);
    if (unxorred == NULL) return -1;
    memset(unxorred, 0, whattoread);
    printf("Un-XOR'ed\n\t");
    for (int i = 0; i < whattoread; i++)
    {
        unxorred[i] = ReadXOR[i] ^ 0xff;
        printf("%0*X ", (int)sizeof(wchar_t), (unsigned int)unxorred[i]);
    }
    printf("\n");
    printf("%ls\n", unxorred);
    printf("%ls\n", sample);
    

    return 0;

输出如下所示，

Test1自己人自己人A
Plain:
        54 65 73 74 31 81EA 5DF1 4EBA 81EA 5DF1 4EBA 41
XOR'ed
        AB 9A 8C 8B CE 8115 5D0E 4E45 8115 5D0E 4E45 BE
Reading
        AB 9A 8C 8B CE 8115 5D0E 4E45 8115 5D0E 4E45 BE
Un-XOR'ed
        54 65 73 74 31 81EA 5DF1 4EBA 81EA 5DF1 4EBA 41
Test1自己人自己人A粘蹊?言?萉?
Test1自己人自己人A

当我修改unicode字符串时，我在输出中得到了错误的文本！