使用Crypto ++通过SHA1生成随机哈希 [英] Using Crypto++ to generate random hashes with SHA1

问题描述

我需要使用SHA1生成一个使用Crypto ++的随机哈希。目前我有：

  #include  
 #include< cryptopp / filters.h> 
 #include< cryptopp / hex.h> 
 
 ... 
 
 CryptoPP :: SHA1 sha1; 
 string source =Hello; //这会以某种方式随机生成
 string hash =; 
 StringSource（source，true，new HashFilter（sha1，new HexEncoder（new StringSink（hash））））; 
  

当我编译时，出现以下错误报告：

 错误：'HashFilter'之前的预期类型说明符
错误：预期'）'之前'HashFilter'
错误：'StringSource'was was没有在此范围内声明
  

任何人都可以帮助我解决这个问题吗？使用这个库有没有更简单的方法来执行此操作？我是使用Crypto ++的新手，所以所有的帮助都将非常感谢。

谢谢。

解决方案

  #include< cryptopp / sha.h> 
 #include< cryptopp / filters.h> 
 #include< cryptopp / hex.h> 
 
 #include< string> 
 
 int main（）
 {
 CryptoPP :: SHA1 sha1; 
 std :: string source =Hello; //这会以某种方式随机生成
 std :: string hash =; 
 CryptoPP :: StringSource（source，true，new CryptoPP :: HashFilter（sha1，new CryptoPP :: HexEncoder（new CryptoPP :: StringSink（hash））））; 
} 
  

I need to generate a random hash using Crypto++, using SHA1. At the moment I have:

#include <cryptopp/sha.h>
#include <cryptopp/filters.h>
#include <cryptopp/hex.h>

...

CryptoPP::SHA1 sha1;
string source = "Hello";  //This will be randomly generated somehow
string hash = "";
StringSource(source, true, new HashFilter(sha1, new HexEncoder(new StringSink(hash))));

When I come to compile, I get the following error reported:

error: expected type-specifier before 'HashFilter'
error: expected ')' before 'HashFilter'
error: 'StringSource' was not declared in this scope

Can anyone help me to get this working? Is there a much simpler way of performing this using this library? I am new to using Crypto++ so all help will be much appreciated.

Thanks.

解决方案

Just specify your namespaces correctly and carefully:

#include <cryptopp/sha.h>
#include <cryptopp/filters.h>
#include <cryptopp/hex.h>

#include <string>

int main()
{
  CryptoPP::SHA1 sha1;
  std::string source = "Hello";  //This will be randomly generated somehow
  std::string hash = "";
  CryptoPP::StringSource(source, true, new CryptoPP::HashFilter(sha1, new CryptoPP::HexEncoder(new CryptoPP::StringSink(hash))));
}

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