crypto7.0移植筆記

Crypto移植筆記

2018.06.12 許靜

 

1.     環境： vs2017, crypto7.0 

2.     修改代碼，使編譯通過。測試crylib項目。

無法打開源文件stdio.h, stddef.h,stdlib.h等文件， 在包含目錄中添加：

C:\Program Files(x86)\Windows Kits\10\Include\10.0.16299.0\ucrt

注意10.0.16299.0版本是否存在本機目錄下。

“找不到Windows SDK版本8.1. 請安裝所需的版本的Windows SDK或者在項目屬性頁中或通過右鍵單擊解決方案並選擇“重定解決方案目標”來更改SDK版本”。更改一下，不出現錯誤。

 

3.     添加cryptlib.lib和所有.h文件。

4.     屬性->c/c++->代碼生成->運行庫 多線程調試。

出錯。

#error指令：Please use the /MD switch for _AFXDLL builds.

原因：將MFC設置成在共享dll中使用MFC.

解決方案：屬性->常規->MFC的使用->在靜態庫中使用MFC.

 

5.     源文件

#ifndef __RSA_MAIN_H__
#define __RSA_MAIN_H__

#include <iostream>
#include <string>



#define _GEN_RSA        1
#if !_GEN_RSA
#define _SPE_RSA    1
#endif

class RSA_C {
public:
    RSA_C(void);
    ~RSA_C(void);
    std::string PubEn(const char* message);
    std::string PriDe(const char* chiphtertext);
    void GenerateRSAKey(unsigned int keyLength, const char *privFilename, const char *pubFilename, const char *seed);

private:
    unsigned int keyLen;
    char *privFilename;
    char *pubFilename;
    char *seed;
    /*
#if _SPE_RSA
    RSA::PrivateKey k1;
    RSA::PublicKey k2;
    AutoSeededRandomPool rnd;
#endif
*/
};

extern RSA_C g_RSA_App;








#endif

#include "RSA_main.h"

#include "rsa.h"
#include "randpool.h"
#include "hex.h"
#include "files.h"
#include "cryptlib.h"
#include "queue.h"
#include "filters.h"

#include "osrng.h"

#include <stdexcept>
using std::runtime_error;

using namespace CryptoPP;
#pragma comment(lib, "cryptlib.lib")


RSA_C g_RSA_App;

#if _GEN_RSA
static std::string RSADecryptString(const char *privFilename, const char *ciphertext);
static std::string RSAEncryptString(const char *pubFilename, const char *seed, const char *message);
static RandomPool& GlobalRNG(void);

void Encode(const std::string& filename, const BufferedTransformation& bt);
#endif

#if _SPE_RSA
void Encode(const std::string& filename, const BufferedTransformation& bt);
void Decode(const std::string& filename, BufferedTransformation& bt);
#endif


#if _SPE_RSA
RSA::PrivateKey k1;
RSA::PublicKey k2;
AutoSeededRandomPool rnd;
#endif

RSA_C::RSA_C(void)
{
    privFilename = new char[1024];
    pubFilename = new char[1024];
    seed = new char[1024];

}

RSA_C::~RSA_C()
{
    delete privFilename;
    delete pubFilename;
    delete seed;
}

std::string RSA_C::PubEn(const char* message)
{
    std::string enText = "";

#if _GEN_RSA
    std::cout << "origin text:" << message << '\n';
    enText = RSAEncryptString(pubFilename, seed, message);
    std::cout << "Encrypted Text:" << enText << '\n';
#endif

#if _SPE_RSA
    RSAES_OAEP_SHA_Encryptor e(k2);
    StringSource(message, true, new PK_EncryptorFilter(rnd,e, new StringSink(enText)));

#endif

    return enText;
}


std::string RSA_C::PriDe(const char* chiphtertext)
{
    std::string deText = "";
#if _GEN_RSA
    std::cout << "Encryped text:" << chiphtertext << '\n';
    deText = RSADecryptString(privFilename, chiphtertext);
    std::cout << "Decrypted Text:" << deText << '\n';
#endif

#if _SPE_RSA
    RSAES_OAEP_SHA_Decryptor d(k1);
    StringSource(chiphtertext, true, new PK_DecryptorFilter(rnd, d, new StringSink(deText)));


#endif

    return deText;
}


#if _GEN_RSA
static RandomPool& GlobalRNG(void)
{
    static RandomPool randomPool;

    return randomPool;
}
#endif


#if _SPE_RSA
void EncodePrivateKey(const std::string& filename, const RSA::PrivateKey& key)
{
    // http://www.cryptopp.com/docs/ref/class_byte_queue.html
    ByteQueue queue;
    key.DEREncodePrivateKey(queue);

    Encode(filename, queue);
}

void EncodePublicKey(const std::string& filename, const RSA::PublicKey& key)
{
    // http://www.cryptopp.com/docs/ref/class_byte_queue.html
    ByteQueue queue;
    key.DEREncodePublicKey(queue);

    Encode(filename, queue);
}

void Encode(const std::string& filename, const BufferedTransformation& bt)
{
    // http://www.cryptopp.com/docs/ref/class_file_sink.html
    FileSink file(filename.c_str());

    bt.CopyTo(file);
    file.MessageEnd();
}

void DecodePrivatekey(const std::string& filename, RSA::PrivateKey& key)
{
    ByteQueue queue;

    Decode(filename, queue);
    key.BERDecodePrivateKey(queue, false, queue.MaxRetrievable());

}

void DecodePublickey(const std::string& filename, RSA::PublicKey& key)
{
    ByteQueue queue;

    Decode(filename, queue);
    key.BERDecodePublicKey(queue, false, queue.MaxRetrievable());

}


void Decode(const std::string& filename, BufferedTransformation& bt)
{
    FileSource file(filename.c_str(), true);

    file.TransferTo(bt);
    bt.MessageEnd();
}

#endif

void RSA_C::GenerateRSAKey(unsigned int ikeyLength, const char *iprivFilename, const char *ipubFilename, const char *iseed)
{
#if _GEN_RSA
    keyLen = ikeyLength;
    strcpy(privFilename, iprivFilename);
    strcpy(pubFilename, ipubFilename);
    strcpy(seed, iseed);

    // DEREncode() changed to Save() at Issue 569.
    RandomPool randPool;
    randPool.IncorporateEntropy((byte *)iseed, strlen(seed));

    RSAES_OAEP_SHA_Decryptor priv(randPool, ikeyLength);
    HexEncoder privFile(new FileSink(iprivFilename));
    priv.AccessMaterial().Save(privFile);
    privFile.MessageEnd();

    RSAES_OAEP_SHA_Encryptor pub(priv);
    HexEncoder pubFile(new FileSink(ipubFilename));
    pub.AccessMaterial().Save(pubFile);
    pubFile.MessageEnd();
#endif

#if _SPE_RSA
    AutoSeededRandomPool rnd;

    RSA::PrivateKey rsaPrivate;
    rsaPrivate.GenerateRandomWithKeySize(rnd, 2048);

    RSA::PublicKey rsaPublic(rsaPrivate);
    // generate
    EncodePrivateKey("C:\\rsa05\\rsa-private.key", rsaPrivate);  //將密鑰放在C:\\rsa05目錄下
    EncodePublicKey("C:\\rsa05\\rsa-public.key", rsaPublic);     //必須預先在C盤建立rsa05文件夾，否則出錯
    std::cout << "Successfully generated and saved RSA keys" << '\n';
    //load
    DecodePrivatekey("C:\\rsa05\\rsa-private.key", k1);
    DecodePublickey("C:\\rsa05\\rsa-public.key", k2);

    //check
    if (!k1.Validate(rnd, 3))
        throw runtime_error("Rsa private key validation failed");
    if (!k2.Validate(rnd, 3))
        throw runtime_error("Rsa public key validation failed");
    /*
    if (rsaPrivate.GetModulus() != k1.GetModulus() || rsaPrivate.GetPublicExponent() != k1.GetPublicExponent() || rsaPrivate.GetPrivateExponent() != k1.GetPrivateExponent)
    {
        throw runtime_error("private key data did not round trip");
    }
    if (rsaPublic.GetModulus() != k2.GetModulus() || rsaPublic.GetPublicExponent != k2.GetPublicExponent())
    {
        throw runtime_error("public key data did not round trip");
    }
        //successfully!
*/

#endif

}

#if _GEN_RSA
static std::string RSAEncryptString(const char *pubFilename, const char *seed, const char *message)
{
    FileSource pubFile(pubFilename, true, new HexDecoder);
    RSAES_OAEP_SHA_Encryptor pub(pubFile);

    RandomPool randPool;
    randPool.IncorporateEntropy((byte *)seed, strlen(seed));

    std::string result;
    StringSource(message, true, new PK_EncryptorFilter(randPool, pub, new HexEncoder(new StringSink(result))));
    return result;
}
#endif

#if _GEN_RSA
static std::string RSADecryptString(const char *privFilename, const char *ciphertext)
{
    FileSource privFile(privFilename, true, new HexDecoder);
    RSAES_OAEP_SHA_Decryptor priv(privFile);

    std::string result;
    StringSource(ciphertext, true, new HexDecoder(new PK_DecryptorFilter(GlobalRNG(), priv, new StringSink(result))));
    return result;
}
#endif

外加一個lib庫。

/**********************************************************************************************************************/ 

生成cryptest工程

官方文檔

 

https://www.cryptopp.com/wiki/Keys_and_Formats#Generating.2C_Validating.2C_Saving.2C_and_Loading_Keys

 

在工程目錄下添加CryptoPP文件夾，將編譯好的lib，以及頭文件放入（頭文件放在include文件夾下） 

流程

 

 

同時，也可以根據項目不同，生成不同的key。將項目名稱作爲seed替換。