在AES 256 Crypto ++中获取十六进制加密字符串 [英] Get hexadecimal encrypted string in AES 256 Crypto++

问题描述

我正在MS视觉工作室中使用Crypto ++来实现AES 256算法。操作系统是Windows 7（64位）。

我需要将密钥提供为十六进制字符串，密码为字符串，最后我希望加密字符串也是十六进制字符串。

这是我要做的：

我的加密方法：

  std :: string encrypt（const std :: string& password）
 {
 std :: string plain = password ; 
 std :: string ciphertext; 
 char * decodedKey =729308A8E815F6A46EB3A8AE6D5463CA7B64A0E2E11BC26A68106FC7697E727E37011; 
 
 byte key [CryptoPP :: AES :: MAX_KEYLENGTH]，iv [CryptoPP :: AES :: BLOCKSIZE]; 
 CryptoPP :: StringSource（reinterpret_cast< const char *>（decodeKey），true，
 new CryptoPP :: HashFilter（*（new CryptoPP :: SHA256），new CryptoPP :: ArraySink（key，CryptoPP :: AES :: MAX_KEYLENGTH）））; 
 memset（iv，0x00，CryptoPP :: AES :: BLOCKSIZE）; 
 
 CryptoPP :: CBC_Mode< CryptoPP :: AES> ::加密加密器（key，sizeof（key），iv）; 
 CryptoPP :: StringSource（plain，true，new CryptoPP :: StreamTransformationFilter（Encryptor，
 new CryptoPP :: HexEncoder（new CryptoPP :: StringSink（ciphertext））））; 
 
 std :: cout<密文：<<密文; 
返回密文; 
} 
  

从main方法

  int main（int argc，char * argv []）{
 
 encrypt（test）; 
 return 0; 
} 
  

目前，我正在硬编码密钥仅用于调试目的。我的键是十六进制字符串，如下所示。我需要将输出加密的字符串作为十六进制字符串。

解决方案

我需要提供密钥作为十六进制字符串，密码为字符串，最后我想加密的字符串也是十六进制字符串。

这在Crypto ++ wiki（有很多例子可以复制/粘贴）。从 HexDecoder的脚本和字符串：

< blockquote>

有时邮件列表将收到有关
交叉验证的问题。例如，请参阅AES CTR Chiper。 PHP-mcrypt和Crypto ++之间输出不同的
。在这个问题中，PHP-mcrypt字符串
使用如下：

  $ key =12345678901234567890123456789012345678901234; 
 $ key = pack（H.strlen（$ key），$ key）; 
 $ iv =1111111111222222222233333333334444444444555555555566666666667777; 
 $ iv = pack（H.strlen（$ iv），$ iv）; 
  

避免打字错误的最简单的方法之一是复制/粘贴和
HexDecoder：

  string encodedKey =1234567890123456789012345678901234567890123456789012345678901234; 
 string encodedIv =1111111111222222222233333333334444444444555555555566666666667777; 
 string key，iv; （
 
 StringSource ssk // StringSource 
 
 StringSource ssv（encodedIv，true / * pumpAll * /，
 new HexDecoder（
 new StringSink（iv）
）// HexDecoder 
）; // StringSource 
  

运行上述代码后， key 和 iv 是十六进制（即二进制）字符串，而不是可打印（即ASCII）字符串。

I am trying to implement the AES 256 algorithm using Crypto++ in MS visual studio. Operating system is Windows 7 (64 bit).

I need to provide the key as a hexadecimal string, password as string and finally i want the encrypted string to also be hexadecimal string.

Here is what I am trying to do:

My encrypt method:

std::string encrypt(const std::string &password)
{
    std::string plain = password;
    std::string ciphertext;
    char * decodedKey= "729308A8E815F6A46EB3A8AE6D5463CA7B64A0E2E11BC26A68106FC7697E727E37011";

    byte key[ CryptoPP::AES::MAX_KEYLENGTH ], iv[ CryptoPP::AES::BLOCKSIZE ];
    CryptoPP::StringSource( reinterpret_cast<const char *>(decodedKey), true,
              new  CryptoPP::HashFilter(*(new  CryptoPP::SHA256), new CryptoPP::ArraySink(key, CryptoPP::AES::MAX_KEYLENGTH)) );
    memset( iv, 0x00,  CryptoPP::AES::BLOCKSIZE );

    CryptoPP::CBC_Mode<CryptoPP::AES>::Encryption Encryptor( key, sizeof(key), iv );
    CryptoPP::StringSource( plain, true, new CryptoPP::StreamTransformationFilter( Encryptor,
              new CryptoPP::HexEncoder(new CryptoPP::StringSink( ciphertext ) ) ) );

    std::cout<<"Ciphertext:" << ciphertext;
    return ciphertext;
}

From main method

int main(int argc, char* argv[]) {

    encrypt("test");
    return 0;
}

At present I am hardcoding the key just for debugging purposes. My key is hexadecimal string as seen below. I need to get the output encrypted string as hex string.

解决方案

I need to provide the key as a hexadecimal string, password as string and finally i want the encrypted string to also be hexadecimal string.

This is covered in the Crypto++ wiki (there's lots of examples in there ready for copy/paste). From HexDecoder's Scripting and Strings:

On occasion, the mailing list will receive questions on cross-validation. For example, see AES CTR Chiper. Different output between PHP-mcrypt and Crypto++. In the question, PHP-mcrypt strings are used as follows:

$key = "1234567890123456789012345678901234567890123456789012345678901234";
$key = pack("H".strlen($key), $key);
$iv = "1111111111222222222233333333334444444444555555555566666666667777";
$iv = pack("H".strlen($iv), $iv);

One of the easiest ways to avoid typos is via Copy/Paste and a HexDecoder:

string encodedKey = "1234567890123456789012345678901234567890123456789012345678901234";
string encodedIv = "1111111111222222222233333333334444444444555555555566666666667777";
string key, iv;

StringSource ssk(encodedKey, true /*pumpAll*/,
    new HexDecoder(
        new StringSink(key)
    ) // HexDecoder
); // StringSource

StringSource ssv(encodedIv, true /*pumpAll*/,
    new HexDecoder(
        new StringSink(iv)
    ) // HexDecoder
); // StringSource

After running the above code, key and iv are hexadecimal (i.e., binary) strings rather than printable (i.e., ASCII) strings.

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