Openssl aes h windows

Инструкция установки openSSL на win.

1. Переходим по ссылке

   http://slproweb.com/products/Win32OpenSSL.html

2. Качаем не лайт версию (32 бит пробовал).
3. Во время установки выбираем пункт:
   
the openssl binaries (/bin) directory / sistem files

4. После установки добавляем в переменные среды в переменную
   
PATH

   :
   
C:\OpenSSL-Win32\lib

5. В .pro-файл проекта на QT добавляем строчку:
   
INCLUDEPATH += C:/OpenSSL-Win32/include

6. В main.cpp пробуем для примера написать строчку :
   
#include <openssl/aes.h>

   и скомпилировать.
7. Готово. Ф-ции видят, но при попытке компиляции вылетает ошибки : undefined reference to `AES_encrypt’

Думал собрать статический qt с вшитым openssl.

На сайте

wiki.qt.io

есть скрипт для PowerShell:

windows-build-qt-static.ps1

. Скрипт автоматически скачивает и устанавливает QT в статической сборке. Вот только мне нужно добавить OpenSSL.

Из изменений скрипта явно нужно заменить старую ссылку скачивания на новую:

// $QtSrcUrl = "http://download.qt-project.org/official_releases/qt/5.3/5.3.0/single/qt-everywhere-opensource-src-5.3.0.7z"
// заменить на
$QtSrcUrl = "http://download.qt.io/official_releases/qt/5.11/5.11.0/single/qt-everywhere-src-5.11.0.zip"

cmd /c "configure.bat -static -debug-and-release -platform win32-g++ -prefix $QtDir `
    -qt-zlib -qt-pcre -qt-libpng -qt-libjpeg -qt-freetype -opengl desktop -qt-sql-sqlite`
    -no-openssl -opensource -confirm-license `
    -make libs -nomake tools -nomake examples -nomake tests"

И что делать с тем что архив ожидался 7z а сейчас он zip? Что нужно сделать с openSSL до запуска скрипта? Установить в системные папки или в папки bin? или ничего не нужно делать?

Based on OpenSSL using the AES encryption feature implemented by C ++, support file encryption, byte arrays encryption. Both Linux and Windows (PS: Using this way, you need to install OpenSSL).

Source File

aes.h

#ifndef __AES_H__
#define __AES_H__

#define OS_LINUX	0x00
#define	OS_WINDOWS	0x01

#define type_OS os_windows // Windows Used

#if TYPE_OS == OS_WINDOWS
 // Remove compilation warning
#define _CRT_NONSTDC_NO_DEPRECATE 
#define _CRT_SECURE_NO_WARNINGS

#pragma comment(lib,"libssl.lib")
#pragma comment(lib,"libcrypto.lib")
#endif

#define AES_BIT		256//192//256
#define AES_KEYLEN  AES_BIT/8

   // Error code definition
enum SysErrCode {
	ErrNone = 0,
	ErrSrcNotExist,
	ErrSrcOpenFail,
	ErrDstOpenFail,
	ErrWriteFail,
	ErrAesFileFormat
};

class aes {
public:
	enum AESBIT {
		AES_256 = 256,
		AES_192 = 192,
		AES_128 = 128,
	};

	int aesBit;
	int aesKeyLen;
	unsigned char *myKey;

	/**
	   * @Brief AES constructor
	  */
	aes();

	/**
	   * @brief AES destructor
	  */
	~aes();

	/**
	   * @brief settings encryption key
	  */
	int setKey(unsigned char *key, AESBIT bit);

	/**
	   * @Brief encryption input buffer content
	  */
	int encryptBuf(unsigned char *inbuf, int inbuflen, unsigned char *outbuf);

	/**
	   * @Brief decrypt input buffer content
	  */
	int decryptBuf(unsigned char *inbuf, int inbuflen, unsigned char *outbuf);

	/**
	   * @Brief AES file encryption
	  */
	int encryptFile(const char *src_path, const char *dst_path);

	/**
	   * @Brief AES file decryption
	  */
	int decryptFile(const char *src_path, const char *dst_path);

};

#endif

aes.cpp

#include "aes.h"
#include <stdio.h>
#include <stdarg.h>
#include <sys/types.h> 
#include <fcntl.h>
#include <sys/stat.h>
#include <memory.h>
#include <stdlib.h>
#include <openssl/aes.h>

#if TYPE_OS == OS_WINDOWS
#include <io.h>
#define lstat		_stati64
#define	stat		_stati64
#else
#include <sys/vfs.h>
#endif // TYPE_OS == OS_WINDOWS

#define DEBUG(fromat,...) 	printf(fromat,##__VA_ARGS__)

using namespace std;

static const unsigned int READ_BUF_LEN = 1024 * 1024;
#if AES_BIT == 256
unsigned char gAESKEY[AES_KEYLEN] = { 0x45,0x4d,0x5e,0xdf,0x8c,0xae,0x53,0x23,
								   0xc4,0xed,0xac,0x99,0xaa,0x78,0x29,0x45,
								   0x11,0x54,0x36,0x65,0x45,0x88,0xac,0xea,
								   0xde,0xdd,0xea,0xeb,0xbd,0x8b,0x9a,0xb5 };
#elif AES_BIT == 192
unsigned char gAESKEY[AES_KEYLEN] = { 0x85,0x4d,0x55,0xdf,0x8c,0xae,0x53,0x23,
								   0xca,0xed,0xac,0x99,0xaa,0x76,0x29,0x45,
								   0x11,0x54,0x31,0x65,0x45,0x28,0xac,0xea };

#elif AES_BIT == 128
unsigned char gAESKEY[AES_KEYLEN] = { 0x85,0x4d,0x5e,0xdf,0x8c,0x5e,0x53,0x23,
								   0xca,0xed,0xac,0x97s,0xaa,0x78,0x29,0x45 };
#endif

/**
     * @Brief constructor
  */
aes::aes()
{
	aesBit = AES_BIT;
	aesKeyLen = AES_KEYLEN;
	myKey = new unsigned char[aesKeyLen];
	memcpy(myKey, gAESKEY, aesKeyLen);
}

/**
     * @Brief destructor
  */
aes::~aes()
{
	delete[] myKey;
}

/**
     * @brief sets the number of keys and encryption bits
     * @ Para1 Key Key
     * @ Para2 bit encrypted number
  * @expl
     * @Return 0: Success-1: Failure
  */
int aes::setKey(unsigned char * key, AESBIT bit)
{
	aesBit = bit;
	aesKeyLen = bit / 8;
	delete[] myKey;
	myKey = new unsigned char[aesKeyLen];
	memcpy(myKey, key, aesKeyLen);
	return 0;
}


/**
     * @Brief encryption input buffer content
     * @ Para1 Inbuf input buffer
     * @ ipa2 inbuflen input buffer size
     * @ Para3 Outbuf Output Buffer
  * @expl
     * @return's number of bytes after encryption
  */
int aes::encryptBuf(unsigned char *inbuf, int inbuflen, unsigned char *outbuf)
{
	AES_KEY aeskey;
	int read_size, remain;
	int block, block_remain;
	unsigned char *mInbuf = new unsigned char[inbuflen+32];
	memcpy(mInbuf,inbuf,inbuflen);

	read_size = inbuflen;
	block = read_size / 16;
	block_remain = read_size % 16;

	AES_set_encrypt_key(myKey, aesBit, &aeskey);

	for (int i = 0; i < block; i++) {
		AES_encrypt(&mInbuf[i * 16], &outbuf[i * 16], &aeskey);
	}
	remain = 32 - block_remain;
	for (int i = block_remain; i < 16; i++) 
		mInbuf[i + block * 16] = remain;
	AES_encrypt(&mInbuf[block * 16], &outbuf[block * 16], &aeskey);
	block++;
	for (int i =0; i < 16; i++)
		mInbuf[i + block * 16] = remain;
	AES_encrypt(&mInbuf[block * 16], &outbuf[block * 16], &aeskey);
	block++;

	delete [] mInbuf;
	return block * 16;
}

/**
     * @Brief decrypt input buffer content
     * @ Para1 Inbuf input buffer
     * @ ipa2 inbuflen input buffer size
     * @ Para3 Outbuf Output Buffer
  * @expl
     * @return's number of bytes after encryption
  */
int aes::decryptBuf(unsigned char *inbuf, int inbuflen, unsigned char *outbuf)
{
	AES_KEY aeskey;
	int same = 0, write_len;
	int read_size, block;
	unsigned char data;

	AES_set_decrypt_key(myKey, aesBit, &aeskey);

	read_size = inbuflen;

	block = read_size / 16;

	for (int i = 0; i < block; i++)
		AES_decrypt(&inbuf[i * 16], &outbuf[i * 16], &aeskey);

	write_len = read_size;

	data = outbuf[read_size - 1];
	for (int i = 0; i < 32; i++) {
		if (data == outbuf[read_size - 1 - i]) {
			same++;
		}
		else {
			break;
		}
	}
	if (same > 0 && same >= data) {
		 DEBUG ("" Document Multi-% D byte% D \ N ", Same, DATAs;
		write_len = read_size - same;
	}

	return write_len;
}

/**
     * @Brief AES file encryption
     * @ Para1 SRC_Path Source File, Uncrypsed File
     * @ para2 DST_PATH destination file, encrypted file
  * @expl
     * @return 0: Successful: failed
  */
int aes::encryptFile(const char *src_path, const char *dst_path)
{

	AES_KEY aeskey;
	struct stat src_stat;
	int read_fd, write_fd, ret, add_tail = 0;
	long long read_file_size;
	int read_size, remain;
	int block, block_remain;
	unsigned char *inbuf=new unsigned char[READ_BUF_LEN+32];
	unsigned char *outbuf=new unsigned char[READ_BUF_LEN+32];

	 / * Get file properties * /
	if (lstat(src_path, &src_stat) != 0)
		return ErrSrcNotExist;

	read_file_size = src_stat.st_size;

	if (read_file_size % 16 == 0 || read_file_size == 0)
		add_tail = 1;


	read_fd = open(src_path, O_RDONLY | O_BINARY);
	if (read_fd < 0)
		return ErrSrcOpenFail;


	write_fd = open(dst_path, O_CREAT | O_WRONLY | O_BINARY);
	if (write_fd < 0) {
		close(read_fd);
		return ErrDstOpenFail;
	}

	AES_set_encrypt_key(myKey, aesBit, &aeskey);

	while (read_file_size > 0) {
		read_size = read(read_fd, inbuf, READ_BUF_LEN);
		block = read_size / 16;
		block_remain = read_size % 16;
		for (int i = 0; i < block; i++) {
			AES_encrypt(&inbuf[i * 16], &outbuf[i * 16], &aeskey);
		}
		if (block_remain != 0) {
			remain = 32 - block_remain;
			for (int i = block_remain; i < 16; i++)
				inbuf[i + block * 16] = remain;
			AES_encrypt(&inbuf[block * 16], &outbuf[block * 16], &aeskey);
			block++;
			for (int i = 0; i < 16; i++)
				inbuf[i + block * 16] = remain;
			AES_encrypt(&inbuf[block * 16], &outbuf[block * 16], &aeskey);
			block++;
		}
		ret = write(write_fd, outbuf, block * 16);
		if (ret < 0)
			goto END;
		read_file_size -= read_size;
	}

	if (add_tail == 1) {
		for (int k = 0; k < 2; k++) {
			memset(inbuf, 32, 16);
			AES_encrypt(inbuf, outbuf, &aeskey);
			ret = write(write_fd, outbuf, 16);
			if (ret < 0)
				goto END;
		}
	}

END:
	close(read_fd);
	close(write_fd);

	delete[] inbuf;
	delete[] outbuf;
	if (ret < 0)
		return ErrWriteFail;

	return ErrNone;
}

/**
     * @Brief AES file decryption
     * @ Para1 src_path source file, ciphertext before decryption
     * @ @ para2 DST_PATH destination file, decryption
  * @expl
     * @return 0: Successful: failed
  */
int aes::decryptFile(const char *src_path, const char *dst_path)
{
	AES_KEY aeskey;
	struct stat src_stat;
	int read_fd, write_fd, ret, same = 0, write_len;
	long long read_file_size;
	int read_size, block;
	unsigned char *inbuf= new unsigned char[READ_BUF_LEN+32];
	unsigned char *outbuf=new unsigned char[READ_BUF_LEN+32];
	unsigned char data;
	char *dstfileDir = NULL;

	 / * Get file properties * /
	if (lstat(src_path, &src_stat) != 0)
		return ErrSrcNotExist;

	read_file_size = src_stat.st_size;

	 / * Judging whether the length of the encrypted file is legal, normal is a multiple of 16 * /
	if (read_file_size % 16 != 0 || read_file_size == 0)
		return ErrAesFileFormat;

	read_fd = open(src_path, O_RDONLY | O_BINARY);
	if (read_fd < 0)
		return ErrSrcOpenFail;

	 / * Delete the existing destination file * /
	unlink(dst_path);

	write_fd = open(dst_path, O_CREAT | O_WRONLY | O_BINARY);
	if (write_fd < 0) {
		close(read_fd);
		return ErrDstOpenFail;
	}

	AES_set_decrypt_key(myKey, aesBit, &aeskey);

	while (read_file_size > 0) {
		read_size = read(read_fd, inbuf, READ_BUF_LEN);

		block = read_size / 16;

		for (int i = 0; i < block; i++)
			AES_decrypt(&inbuf[i * 16], &outbuf[i * 16], &aeskey);

		write_len = read_size;

		if (read_size == read_file_size) {
			data = outbuf[read_size - 1];
			for (int i = 0; i < 32; i++) {
				if (data == outbuf[read_size - 1 - i]) {
					same++;
				}
				else {
					break;
				}
			}
			if (same > 0 && same >= data) {
				 DEBUG ("" Document Multi-% D byte% D \ N ", Same, DATAs;
				write_len = read_size - data;
			}
		}
		ret = write(write_fd, outbuf, write_len);
		if (ret < 0)
			goto END;
		read_file_size -= read_size;
	}
END:
	close(read_fd);
	close(write_fd);

	delete[] inbuf;
	delete[] outbuf;

	if (ret < 0)
		return ErrWriteFail;
	return ErrNone;
}

Example of use and test:

// Document decryption
aes Aes;
Aes.encryptFile("F:/src_9.txt", "F:/src_9.aes");
Aes.decryptFile("F:/src_9.aes", "F:/src_9_new.txt");
Aes.encryptFile("F:/src_16.txt", "F:/src_16.aes");
Aes.decryptFile("F:/src_16.aes", "F:/src_16_new.txt");
Aes.encryptFile("F:/src_20.txt", "F:/src_20.aes");
Aes.decryptFile("F:/src_20.aes", "F:/src_20_new.txt");
Aes.encryptFile("F:/src_32.txt", "F:/src_32.aes");
Aes.decryptFile("F:/src_32.aes", "F:/src_32_new.txt");

 // Byte array addresses (PS: encrypted output array length is at least 32 bytes of input array)
unsigned char buf_7[] = { 0x13,0x24,0x35,0x42,0x78,0x9,0xad };
unsigned char buf_16[] = { 0x13,0x24,0x35,0x42,0x78,0x9,0xad,0xed,0xac,0xcb,0x87,0x34,0x76,0x23,0x13,0x1 };
unsigned char buf_31[] = { 0x13,0x24,0x35,0x42,0x78,0x9,0xad,0xed,0xac,0xcb,0x87,0x34,0x76,0x23,0x13,0x3 , 0x13,0x24,0x35,0x42,0x78,0x9,0xad,0xed,0xac,0xcb,0x87,0x34,0x76,0x23,0x1 };
unsigned char buf_64[] = { 0x13,0x24,0x35,0x42,0x78,0x9,0xad,0xed,0xac,0xcb,0x87,0x34,0x76,0x23,0x13,0x3 , 0x13,0x24,0x35,0x42,0x78,0x9,0xad,0xed,0xac,0xcb,0x87,0x34,0x76,0x23,0x13,0x3 ,
				0x13,0x24,0x35,0x42,0x78,0x9,0xad,0xed,0xac,0xcb,0x87,0x34,0x76,0x23,0x13,0x3 , 0x13,0x24,0x35,0x42,0x78,0x9,0xad,0xed,0xac,0xcb,0x87,0x34,0x76,0x23,0x13,0x3 };

unsigned char buf_7_aes[128] = { 0 };
unsigned char buf_16_aes[128] = { 0 };
unsigned char buf_31_aes[128] = { 0 };
unsigned char buf_64_aes[128] = { 0 };

unsigned char buf_7_out[128] = { 0 };
unsigned char buf_16_out[128] = { 0 };
unsigned char buf_31_out[128] = { 0 };
unsigned char buf_64_out[128] = { 0 };

int aeslen, srclen,i;
aeslen = Aes.encryptBuf(buf_7, sizeof(buf_7), buf_7_aes);
srclen = Aes.decryptBuf(buf_7_aes,aeslen,buf_7_out);
if (srclen == sizeof(buf_7)) {
	for (i = 0; i < srclen; i++) {
		if (buf_7[i] != buf_7_out[i]) {
			printf("buf_7 not equal\n");
			break;
		}
	}
}
else
	printf("buf_7 not equal len=%d\n",srclen);

aeslen = Aes.encryptBuf(buf_16, sizeof(buf_16), buf_16_aes);
srclen = Aes.decryptBuf(buf_16_aes, aeslen, buf_16_out);
if (srclen == sizeof(buf_16)) {
	for (i = 0; i < srclen; i++) {
		if (buf_16[i] != buf_16_out[i]) {
			printf("buf_16 not equal\n");
			break;
		}
	}
}
else
	printf("buf_16 not equal len=%d\n", srclen);

aeslen = Aes.encryptBuf(buf_31, sizeof(buf_31), buf_31_aes);
srclen = Aes.decryptBuf(buf_31_aes, aeslen, buf_31_out);
if (srclen == sizeof(buf_31)) {
	for (i = 0; i < srclen; i++) {
		if (buf_31[i] != buf_31_out[i]) {
			printf("buf_31 not equal\n");
			break;
		}
	}
}
else
	printf("buf_31 not equal len=%d\n", srclen);

aeslen = Aes.encryptBuf(buf_64, sizeof(buf_64), buf_64_aes);
srclen = Aes.decryptBuf(buf_64_aes, aeslen, buf_64_out);
if (srclen == sizeof(buf_64)) {
	for (i = 0; i < srclen; i++) {
		if (buf_64[i] != buf_64_out[i]) {
			printf("buf_64 not equal\n");
			break;
		}
	}
}
else
	printf("buf_64 not equal len=%d\n", srclen);

August 19th at 12:00am

Cryptography is a fascinating subject that I would like to learn more about. While I may not make any contributions in cryptology in my career, I can certainly appreciate the mathematics, mathematicians and engineers who have helped make encryption more mainstream. As I’m interested in applying cryptography in the software I create I decidd to look at how I can operate OpenSSL.

As with my previous foray into the world of Bouncy Castle (a C# Cryptographic library) I have found the documentation surrounding OpenSSL to be inadequate. While I hope what I write here can be useful to someone investigating one facet OpenSSL I hope to come back here in the future to refresh my memory when working with AES in OpenSSL in the future.

References

• OpenSSL is written by monkeys [peereboom.us]
• Reddit Commentary: OpenSSL is written by monkeys [reddit.com/r/programming]
   
• Comparison of TLS implementations [wikipedia.org]
• Compare SSL Libraries [curl.haxx.se]
• NaCL: Networking and Cryptographic Library [nacl.cr.yp.to]
• OpenSSL in BB10 Cascades [supportforums.blackberry.com]
   
• How to choose an AES encryption mode (CBC ECB CTR OCB CFB)? [stackoverflow.com]
• Block cipher mode of operation [wikipedia.org]
• AES Encryption -Key Generation with OpenSSL (Get Random Bytes for Key) [stackoverflow.com]
• How to do encryption using AES in Openssl [stackoverflow.com]
• AES CBC encrypt/decrypt only decrypts the first 16 bytes [stackoverflow.com]
• Initialization Vector [wikipedia.org]
   
• AES encryption/decryption demo program using OpenSSL EVP apis [saju.net.in]
• OpenSSL using EVP vs. algorithm API for symmetric crypto [stackoverflow.com]
• Some AES Ciphers are only available via EVP (like XTS) [mail-archive.com, openssl-users list]

Adventures in OpenSSL Land

I started my journey into OpenSSL with energy and optimism- I was going to learn how to work with the worlds most commonly used cryptographic library. I figured that mastering this library would help me make better, more secure software. Upon investigating the API documentation and trying out some sample code it quickly became apparent that OpenSSL has a steep learning curve. I wouldn’t be getting anything productive done anytime soon.

After my initial taste of OpenSSL I decided to look at other cryptographic libraries. Was there anything else available? I found quite a few different libraries that have different levels of capability. At the end of the day I wanted to learn a crypto library that was cross platform, well used and secure so I ended up where I started with OpenSSL. That’s not to say that the other libraries are ‘bad’, I just found that for my goals the other libraries either had too many dependencies, didn’t work on all the platforms I thought I would be working on or were too limited in functionality for my needs. If you are starting a crypto project that fits into a smaller box, the other options (Like NaCL or GnuTLS) may do what you need them to do.

For BlackBerry 10 Developers

In your .pro file, add this line:

LIBS += -lcrypto

Without it you won’t be able to successfully build an application that leverages OpenSSL

Important Notes for New OpenSSL Devs

• When working with the AES_* APIs (such as AES_cbc_encrypt), be sure to pass in a copy of your Initialization Vector (IV) if you plan on using it elsewhere in your program. I found during my testing that if you only have one copy of the IV and use it in multiple locations that it ‘gets corrupted’ (for lack of a better term). This will be most visible when setting up a test method that Encrypts a string then immediately Decrypts it (as seen below).
   
• Before using the AES API to encrypt, you have to run AES_set_encrypt_key(…) to setup the AES Structure required by the OpenSSL API. Likewise, you have to call AES_set_decrypt_key(…) to setup the AES Structure required to decrypt data using the OpenSSL API

OpenSSL and AES Encryption (Options)

I found a couple of different APIs that can be used to perform AES Encryption using OpenSSL. That’s not to say that there may not be more, just that these are the ones I was able to find by googling:

• AES API
• This API lets you get right into encrypting or decrypting data using the AES cipher. The available functions can be found in openssl/aes.h
  (At the time of this writing I was unable to find even a stub of a page on the OpenSSL Site that describes the AES API to any depth)
   
• EVP API
• This API lets you abstract the specific type of encryption used. It makes it easy to change out which cryptographic provider is used with less refactoring on your part. The available function list can be found in openssl/evp.h

For my purposes I decided to use the AES API directly. I made this decision based on the fact that I seemed to get further faster with the examples that used the AES API. As I gain proficiency with OpenSSL I’ll be able to come back later and (hopefully) swallow the EVP API if I need to.

Get A Sample AES Encryption Function Going

In order to get the AES API to work with the ASCII data that I will be feeding it, I needed to setup:

• A random number that can be used as an Encryption Key
• A random number that can be used as an Initialization Vector
• A couple of OpenSSL AES_KEY structures for encrypting and decrypting via the API
• A function to pad my text input so it encrypts and decrypts cleanly

The result is this sample code which encrypts a string then decrypts it (minus error handling):

#include <inttypes.h>
#include <string>
#include <algorithm>
#include <openssl/aes.h>
#include <openssl/rand.h>

uint8_t Key[32];
uint8_t IV[AES_BLOCK_SIZE]; // Generate an AES Key
RAND_bytes(Key, sizeof(Key));   // and Initialization Vector
RAND_bytes(IV, sizeof(IV)); //

// Make a copy of the IV to IVd as it seems to get destroyed when used
uint8_t IVd[AES_BLOCK_SIZE];
for(int i=0; i < AES_BLOCK_SIZE; i++){
    IVd[i] = IV[i];
}

/** Setup the AES Key structure required for use in the OpenSSL APIs **/
AES_KEY* AesKey = new AES_KEY();
AES_set_encrypt_key(Key, 256, AesKey);

/** take an input string and pad it so it fits into 16 bytes (AES Block Size) **/
std::string txt("this is a test");
const int UserDataSize = (const int)txt.length();   // Get the length pre-padding
int RequiredPadding = (AES_BLOCK_SIZE - (txt.length() % AES_BLOCK_SIZE));   // Calculate required padding
std::vector<unsigned char> PaddedTxt(txt.begin(), txt.end());   // Easier to Pad as a vector
for(int i=0; i < RequiredPadding; i++){
    PaddedTxt.push_back(0); //  Increase the size of the string by
}                           //  how much padding is necessary

unsigned char * UserData = &PaddedTxt[0];// Get the padded text as an unsigned char array
const int UserDataSizePadded = (const int)PaddedTxt.size();// and the length (OpenSSl is a C-API)

/** Peform the encryption **/
unsigned char EncryptedData[512] = {0}; // Hard-coded Array for OpenSSL (C++ can't dynamic arrays)
AES_cbc_encrypt(UserData, EncryptedData, UserDataSizePadded, (const AES_KEY*)AesKey, IV, AES_ENCRYPT);

/** Setup an AES Key structure for the decrypt operation **/
AES_KEY* AesDecryptKey = new AES_KEY(); // AES Key to be used for Decryption
AES_set_decrypt_key(Key, 256, AesDecryptKey);   // We Initialize this so we can use the OpenSSL Encryption API

/** Decrypt the data. Note that we use the same function call. Only change is the last parameter **/
unsigned char DecryptedData[512] = {0}; // Hard-coded as C++ doesn't allow for dynamic arrays and OpenSSL requires an array
AES_cbc_encrypt(EncryptedData, DecryptedData, UserDataSizePadded, (const AES_KEY*)AesDecryptKey, IVd, AES_DECRYPT);

Afterword

I look forward to getting more proficient with the OpenSSL Library. I bet I’ll get the hang of it with a bit more practice.

Last Updated: 12/02/2024
[Average Article Time to Read: 4.7 minutes]

C/C++/Objective-C Header files, such as aes.h, are considered a type of Developer (C/C++/Objective-C Header) file. They are associated with the H file extension, developed by Apache Friends for XAMPP 5.6.40.

aes.h was first developed on 03/08/2019 for the Windows 10 Operating System in XAMPP 5.6.40.

This file marks the latest update from Apache Friends, according to our records.

In this article, you will find detailed aes.h information, a H file troubleshooting guide, and a list of versions that are available for free download.

What are aes.h Error Messages?

Most H errors are due to missing or corrupt files. Your aes.h file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with XAMPP), or deleted by a malware infection. Furthermore, aes.h file corruption could be caused from a power outage when loading XAMPP, system crash while loading or saving aes.h, bad sectors on your storage media (usually your primary hard drive), or malware infection. Thus, it’s critical to make sure your anti-virus is kept up-to-date and scanning regularly.

How to Fix aes.h Errors in 3 Steps (Time to complete: ~5-15 minutes)

If you’re encountering one of the error messages above, follow these troubleshooting steps to resolve your aes.h issue. These troubleshooting steps are listed in the recommended order of execution.

Step 1: Restore your PC back to the latest restore point, «snapshot», or backup image before error occurred.

To begin System Restore (Windows XP, Vista, 7, 8, and 10):

1. Hit the Windows Start button
2. When you see the search box, type «System Restore» and press «ENTER«.
3. In the search results, find and click System Restore.
4. Please enter the administrator password (if applicable / prompted).
5. Follow the steps in the System Restore Wizard to choose a relevant restore point.
6. Restore your computer to that backup image.

If the Step 1 fails to resolve the aes.h error, please proceed to the Step 2 below.

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Step 2: If recently installed XAMPP (or related software), uninstall then try reinstalling XAMPP software.

Step 3: Perform a Windows Update.

When the first two steps haven’t solved your issue, it might be a good idea to run Windows Update. Many aes.h error messages that are encountered can be contributed to an outdated Windows Operating System. To run Windows Update, please follow these easy steps:

1. Hit the Windows Start button
2. In the search box, type «Update» and press «ENTER«.
3. In the Windows Update dialog box, click «Check for Updates» (or similar button depending on your Windows version)
4. If updates are available for download, click «Install Updates«.
5. After the update is completed, restart your PC.

If Windows Update failed to resolve the aes.h error message, please proceed to next step. Please note that this final step is recommended for advanced PC users only.

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If Those Steps Fail: Download and Replace Your aes.h File (Caution: Advanced)

If none of the previous three troubleshooting steps have resolved your issue, you can try a more aggressive approach (Note: Not recommended for amateur PC users) by downloading and replacing your appropriate aes.h file version. We maintain a comprehensive database of 100% malware-free aes.h files for every applicable version of XAMPP. Please follow the steps below to download and properly replace you file:

1. Locate your Windows operating system version in the list of below «Download aes.h Files».
2. Click the appropriate «Download Now» button and download your Windows file version.
3. Copy this file to the appropriate XAMPP folder location:

   Windows 10: C:\xampp\FileZillaFTP\source\includes\openssl\

4. Restart your computer.

If this final step has failed and you’re still encountering the error, you’re only remaining option is to do a clean installation of Windows 10.

GEEK TIP : We must emphasize that reinstalling Windows will be a very time-consuming and advanced task to resolve aes.h problems. To avoid data loss, you must be sure that you have backed-up all of your important documents, pictures, software installers, and other personal data before beginning the process. If you are not currently backing up your data, you need to do so immediately.

Download aes.h Files (Malware-Tested 100% Clean)

CAUTION : We strongly advise against downloading and copying aes.h to your appropriate Windows system directory. Apache Friends typically does not release XAMPP H files for download because they are bundled together inside of a software installer. The installer’s task is to ensure that all correct verifications have been made before installing and placing aes.h and all other H files for XAMPP. An incorrectly installed H file may create system instability and could cause your program or operating system to stop functioning altogether. Proceed with caution.

Other Files Related to aes.h

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