将CryptoPP :: Integer转换为LPCTSTR [英] Convert CryptoPP::Integer to LPCTSTR

问题描述

我找不到正确的代码将CryptoPP::Integer(从RSA密钥生成)转换为LPCTSTR(我想将密钥存储在注册表中).你能帮我吗?

I can't find the right code to convert a CryptoPP::Integer (from a RSA key generation) to a LPCTSTR (I want to store the key in the registry). Could you help me ?

谢谢！

推荐答案

...将CryptoPP::Integer(从RSA密钥生成)转换为LPCTSTR(我要将密钥存储在注册表中).你能帮我吗?

... convert a CryptoPP::Integer (from a RSA key generation) to a LPCTSTR (I want to store the key in the registry). Could you help me ?

应该执行以下操作. Integer类在integer.h中重载 operator<< :

Something like the following should do. The Integer class overloads operator<< in integer.h:

Integer n("0x0123456789012345678901234567890123456789");
ostringstream oss;    
oss << std::hex << n;

string str(oss.str());
LPCSTR ptr = str.c_str();

使用插入运算符时，Integer类始终打印后缀.在上面的代码中，由于std::hex，将附加 h .因此，您可能要添加:

The Integer class always prints a suffix when using the insertion operator. In the code above, a h will be appended because of std::hex. So you might want to add:

string str(oss.str());
str.erase(str.end() - 1);

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另一种方法是使用功能 IntToString<Integer>() 来自misc.h.但是，它仅适用于窄字符串，而不适用于宽字符串.

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Another way to do it is use the function IntToString<Integer>() from misc.h. However, it only works on narrow strings, and not wide strings.

Integer n("0x0123456789012345678901234567890123456789");
string val = IntToString(n, 16)

IntToString不打印后缀.但是，需要黑客才能以大写形式打印字符串(如手册中所示).

IntToString does not print the suffix. However, hacks are needed to print the string in uppercase (as shown in the manual).

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