torrent文件, 这是什么编码?

hurryboylqs 2012-06-04 10:59:36

Rq4Yh0UAAABiAHQAMgB0AHIAYQBjAGsAMQAuAHIAaQBjAGgAYgBhAHIALgBuAGUAd
AAuAGMAbgA6ADQANAAzADoAMwAxADMAMwAxAHwAYgB0ADIAdAByAGEAYwBrADIALg
ByAGkAYwBoAGIAYQByAC4AbgBlAHQALgBjAG4AOgA0ADQAMwA6ADMAMQAzADMAMQAV
AAAAUgBUAC0ALQBSAFQARwBhAG0AZQBNAGEAbgBhAGcAZQByAC4AaQBkAHgA5dR/zd
jQkozj7asTjgoXUAAABACZAQAAAQAAAA4y5MyZAQAAAAAAAAAAAAAAAAAAkFMgD2JCz
QFDWjAxAAAAAA
--------------------------

一个 *.torrent文件

...全文

348 5 打赏收藏转发到动态举报

写回复

用AI写文章

5 条回复

切换为时间正序

请发表友善的回复…

发表回复

hurryboylqs 2012-06-05

打赏
举报

还是不知道这么解析

Kaile 2012-06-05

打赏
举报

象Base64

用这个函数解码看下：

std::string base64_decode(std::string const& encoded_string)
{
int in_len = encoded_string.size();
int i = 0, j = 0, in_ = 0;
unsigned char char_array_4[4], char_array_3[3];
std::string ret;

while (in_len-- && ( encoded_string[in_] != '=') && is_base64(encoded_string[in_]))
{
char_array_4[i++] = encoded_string[in_]; in_++;
if (i ==4) {
for (i = 0; i <4; i++)
char_array_4[i] = base64_chars.find(char_array_4[i]);

char_array_3[0] = (char_array_4[0] << 2) + ((char_array_4[1] & 0x30) >> 4);
char_array_3[1] = ((char_array_4[1] & 0xf) << 4) + ((char_array_4[2] & 0x3c) >> 2);
char_array_3[2] = ((char_array_4[2] & 0x3) << 6) + char_array_4[3];

for (i = 0; (i < 3); i++)
ret += char_array_3[i];
i = 0;
}
}

if (i)
{
for (j = i; j <4; j++)
char_array_4[j] = 0;

for (j = 0; j <4; j++)
char_array_4[j] = base64_chars.find(char_array_4[j]);

char_array_3[0] = (char_array_4[0] << 2) + ((char_array_4[1] & 0x30) >> 4);
char_array_3[1] = ((char_array_4[1] & 0xf) << 4) + ((char_array_4[2] & 0x3c) >> 2);
char_array_3[2] = ((char_array_4[2] & 0x3) << 6) + char_array_4[3];

for (j = 0; (j < i - 1); j++)
ret += char_array_3[j];
}

return ret;
}