我正在接收字符串中的二进制数据。我想将其编码为 Base64。是否有任何类可以执行该操作(我想要一个 API)。

最佳答案

CryptBinaryToString
...如果您的目标是 Windows 平台

这是一个小示例:

#include <Windows.h>

#pragma comment(lib, "crypt32.lib")

int main()
{
    LPCSTR pszSource = "Man is distinguished, not only by his reason, but ...";
    DWORD nDestinationSize;
    if (CryptBinaryToString(reinterpret_cast<const BYTE*> (pszSource), strlen(pszSource), CRYPT_STRING_BASE64, nullptr, &nDestinationSize))
    {
        LPTSTR pszDestination = static_cast<LPTSTR> (HeapAlloc(GetProcessHeap(), HEAP_NO_SERIALIZE, nDestinationSize * sizeof(TCHAR)));
        if (pszDestination)
        {
            if (CryptBinaryToString(reinterpret_cast<const BYTE*> (pszSource), strlen(pszSource), CRYPT_STRING_BASE64, pszDestination, &nDestinationSize))
            {
                // Succeeded: 'pszDestination' is 'pszSource' encoded to base64.
            }
            HeapFree(GetProcessHeap(), HEAP_NO_SERIALIZE, pszDestination);
        }
    }
    return 0;
}

关于c++ - 如何将二进制字符串转换为 base64 编码的数据,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/6385319/

10-08 22:04