Linux使用wincrypt.h实现加密 (linux use wincrypt.h)

Introduction

Linux is an open-source operating system widely used in servers, supercomputers, and artphones. Security is critical for any operating system, and Linux has several encryption tools to secure the data. Wincrypt.h is a Windows Cryptography API that can be used to design cryptography applications in Linux systems. In this article, we will learn about using wincrypt.h in Linux to implement encryption.

What is wincrypt.h?

Wincrypt.h is a library that provides cryptographic services to Windows operating systems. It includes data encryption, decryption, digital signature creation and verification, and random number generation. Wincrypt.h has been widely used by Windows developers to ensure data security. However, wincrypt.h can be compiled to work with Linux for cryptography purposes.

How to use wincrypt.h for encryption in Linux?

To use wincrypt.h for encryption in Linux, you need to have a Linux machine with necessary software installed. The following steps illustrate how to use wincrypt.h in Linux:

1. Install OpenSSL library

OpenSSL is an open-source cryptographic library that is widely used by Linux systems. The library provides reliable encryption, decryption, and secure communication. To install OpenSSL, run the following command on Ubuntu:

“`

sudo apt-get install openssl

“`

2. Download and install Mingw-w64 cross-compiler

Mingw-w64 is a cross-compiler that can be used to compile Windows code on Linux systems. It can be used to compile wincrypt.h code to work in Linux. To install Mingw-w64 on Ubuntu, run the following command:

“`

sudo apt-get install mingw-w64

“`

3. Compile wincrypt.h to work with Linux

The next step is to compile wincrypt.h to work with Linux using Mingw-w64. To do this, run the following command:

“`

i686-w64-mingw32-gcc -DCRYPT_EXPORTS -c wincrypt.c

“`

4. Install Wine

Wine is a compatibility layer that can run Windows applications on Linux. To install Wine on Ubuntu, run the following command:

“`

sudo apt-get install wine

“`

5. Testing

After installing all the necessary software, you can test the wincrypt.h library in Linux. To do this, create a simple encryption program and compile it using Mingw-w64. Then, run the resulting executable using Wine. Here is a sample program to encrypt a file using wincrypt.h:

“`

#include

#include

int mn() {

HCRYPTPROV hProv;

HCRYPTKEY hKey;

DWORD dwHandle = 0;

LPCSTR pszPassword = “mypassword”;

LPCSTR pszFile = “myfile.txt”;

CryptAcquireContext(&hProv, NULL, MS_ENHANCED_PROV, PROV_RSA_FULL, 0);

CryptCreateHash(hProv, CALG_MD5, 0, 0, &dwHandle);

CryptHashData(dwHandle, (BYTE *)pszPassword, strlen(pszPassword), 0);

CryptDeriveKey(hProv, CALG_AES_256, dwHandle, 0, &hKey);

FILE *fp_in = fopen(pszFile, “rb”);

FILE *fp_out = fopen(“encrypted.txt”, “wb”);

BYTE buffer[1024];

DWORD nread = 0, nwritten = 0;

while ((nread = fread(buffer, 1, sizeof(buffer), fp_in)) > 0) {

CryptEncrypt(hKey, NULL, TRUE, 0, buffer, &nread, sizeof(buffer));

fwrite(buffer, 1, nread, fp_out);

}

fclose(fp_in);

fclose(fp_out);

CryptDestroyKey(hKey);

CryptDestroyHash(dwHandle);

CryptReleaseContext(hProv, 0);

return 0;

}

“`

Compile the above program using Mingw-w64 with the following command:

“`

i686-w64-mingw32-gcc -o encrypt.exe encrypt.c wincrypt.o -L/usr/lib/i386-linux-gnu -lssl -lcrypto

“`

Run the resulting executable using Wine:

“`

wine encrypt.exe

“`

If the program runs successfully, it will encrypt the file myfile.txt to encrypted.txt using wincrypt.h in Linux.

Conclusion