passage en objet fini mais segfault
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aes
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</entry>
|
||||
<entry file="file://$PROJECT_DIR$/aes.hpp">
|
||||
<provider selected="true" editor-type-id="text-editor">
|
||||
<state vertical-scroll-proportion="0.0">
|
||||
<caret line="0" column="0" selection-start-line="0" selection-start-column="0" selection-end-line="0" selection-end-column="0" />
|
||||
<folding />
|
||||
</state>
|
||||
</provider>
|
||||
</entry>
|
||||
<entry file="file://$PROJECT_DIR$/main.cpp">
|
||||
<provider selected="true" editor-type-id="text-editor">
|
||||
<state vertical-scroll-proportion="0.0">
|
||||
<caret line="9" column="25" selection-start-line="9" selection-start-column="25" selection-end-line="9" selection-end-column="25" />
|
||||
<folding />
|
||||
</state>
|
||||
</provider>
|
||||
</entry>
|
||||
<entry file="file://$PROJECT_DIR$/CMakeLists.txt">
|
||||
<provider selected="true" editor-type-id="text-editor">
|
||||
<state vertical-scroll-proportion="0.0">
|
||||
<caret line="4" column="42" selection-start-line="4" selection-start-column="42" selection-end-line="4" selection-end-column="42" />
|
||||
<folding />
|
||||
</state>
|
||||
</provider>
|
||||
</entry>
|
||||
<entry file="file://$PROJECT_DIR$/aes.cpp">
|
||||
<provider selected="true" editor-type-id="text-editor">
|
||||
<state vertical-scroll-proportion="0.25684932">
|
||||
<caret line="10" column="0" selection-start-line="10" selection-start-column="0" selection-end-line="10" selection-end-column="0" />
|
||||
<folding />
|
||||
</state>
|
||||
</provider>
|
||||
</entry>
|
||||
</component>
|
||||
</project>
|
||||
|
|
@ -0,0 +1,8 @@
|
|||
cmake_minimum_required(VERSION 3.3)
|
||||
project(aes)
|
||||
|
||||
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wall -Wextra -ggdb -lcrypto")
|
||||
include_directories("/usr/include/openssl/")
|
||||
|
||||
set(SOURCE_FILES aes.cpp)
|
||||
add_executable(crypto.ex ${SOURCE_FILES})
|
||||
285
aes.cpp
285
aes.cpp
|
|
@ -1,256 +1,83 @@
|
|||
#include <openssl/evp.h>
|
||||
#include <openssl/pem.h>
|
||||
#include <openssl/aes.h>
|
||||
#include <openssl/err.h>
|
||||
#include <openssl/rand.h>
|
||||
|
||||
#include <iostream>
|
||||
#include <stdio.h>
|
||||
#include <string>
|
||||
#include <string.h>
|
||||
|
||||
#define FAILURE -1
|
||||
#define SUCCESS 0
|
||||
|
||||
#define AES_KEYLEN 256
|
||||
#define AES_ROUNDS 6
|
||||
|
||||
|
||||
int aesDecrypt(EVP_CIPHER_CTX* aesDecryptCtx, unsigned char* aesKey, unsigned char* aesIV, unsigned char *encMsg, size_t encMsgLen, unsigned char **decMsg) {
|
||||
size_t decLen = 0;
|
||||
size_t blockLen = 0;
|
||||
|
||||
*decMsg = (unsigned char*)malloc(encMsgLen);
|
||||
if(*decMsg == NULL) return FAILURE;
|
||||
|
||||
if(!EVP_DecryptInit_ex(aesDecryptCtx, EVP_aes_256_cbc(), NULL, aesKey, aesIV)) {
|
||||
return FAILURE;
|
||||
}
|
||||
|
||||
if(!EVP_DecryptUpdate(aesDecryptCtx, (unsigned char*)*decMsg, (int*)&blockLen, encMsg, (int)encMsgLen)) {
|
||||
return FAILURE;
|
||||
}
|
||||
decLen += blockLen;
|
||||
|
||||
if(!EVP_DecryptFinal_ex(aesDecryptCtx, (unsigned char*)*decMsg + decLen, (int*)&blockLen)) {
|
||||
return FAILURE;
|
||||
}
|
||||
decLen += blockLen;
|
||||
|
||||
EVP_CIPHER_CTX_cleanup(aesDecryptCtx);
|
||||
|
||||
return (int)decLen;
|
||||
}
|
||||
|
||||
int aesEncrypt(EVP_CIPHER_CTX* aesEncryptCtx, unsigned char* aesKey, unsigned char* aesIV, const unsigned char *msg, size_t msgLen, unsigned char **encMsg) {
|
||||
size_t blockLen = 0;
|
||||
size_t encMsgLen = 0;
|
||||
|
||||
*encMsg = (unsigned char*)malloc(msgLen + AES_BLOCK_SIZE);
|
||||
if(encMsg == NULL) return FAILURE;
|
||||
|
||||
if(!EVP_EncryptInit_ex(aesEncryptCtx, EVP_aes_256_cbc(), NULL, aesKey, aesIV)) {
|
||||
return FAILURE;
|
||||
}
|
||||
|
||||
if(!EVP_EncryptUpdate(aesEncryptCtx, *encMsg, (int*)&blockLen, (unsigned char*)msg, msgLen)) {
|
||||
return FAILURE;
|
||||
}
|
||||
encMsgLen += blockLen;
|
||||
|
||||
if(!EVP_EncryptFinal_ex(aesEncryptCtx, *encMsg + encMsgLen, (int*)&blockLen)) {
|
||||
return FAILURE;
|
||||
}
|
||||
|
||||
EVP_CIPHER_CTX_cleanup(aesEncryptCtx);
|
||||
|
||||
return encMsgLen + blockLen;
|
||||
}
|
||||
|
||||
void clear_all(EVP_CIPHER_CTX* aesEncryptCtx, EVP_CIPHER_CTX* aesDecryptCtx, unsigned char* aesKey, unsigned char* aesIV) {
|
||||
EVP_CIPHER_CTX_cleanup(aesEncryptCtx);
|
||||
EVP_CIPHER_CTX_cleanup(aesDecryptCtx);
|
||||
|
||||
free(aesEncryptCtx);
|
||||
free(aesDecryptCtx);
|
||||
|
||||
free(aesIV);
|
||||
free(aesKey);
|
||||
}
|
||||
|
||||
void init_all(EVP_CIPHER_CTX* aesEncryptCtx, EVP_CIPHER_CTX* aesDecryptCtx, unsigned char* aesKey, unsigned char* aesIV) {
|
||||
EVP_CIPHER_CTX_init(aesEncryptCtx);
|
||||
EVP_CIPHER_CTX_init(aesDecryptCtx);
|
||||
|
||||
unsigned char *aesPass = (unsigned char*)malloc(AES_KEYLEN/8);
|
||||
unsigned char *aesSalt = (unsigned char*)malloc(8);
|
||||
|
||||
if(aesKey == NULL || aesIV == NULL || aesPass == NULL || aesSalt == NULL) {
|
||||
exit(FAILURE);
|
||||
}
|
||||
|
||||
#define USE_PBKDF
|
||||
#ifdef USE_PBKDF
|
||||
std::cerr << "utilisation de USE_PBKDF" << std::endl;
|
||||
// Get some random data to use as the AES pass and salt
|
||||
if(RAND_bytes(aesPass, AES_KEYLEN/8) == 0) {
|
||||
exit(FAILURE);
|
||||
}
|
||||
|
||||
if(RAND_bytes(aesSalt, 8) == 0) {
|
||||
exit(FAILURE);
|
||||
}
|
||||
|
||||
if(EVP_BytesToKey(EVP_aes_256_cbc(), EVP_sha256(), aesSalt, aesPass, AES_KEYLEN/8, AES_ROUNDS, aesKey, aesIV) == 0) {
|
||||
exit(FAILURE);
|
||||
}
|
||||
#else
|
||||
if(RAND_bytes(aesKey, AES_KEYLEN/8) == 0) {
|
||||
exit(FAILURE);
|
||||
}
|
||||
|
||||
if(RAND_bytes(aesIV, AES_KEYLEN/8) == 0) {
|
||||
exit(FAILURE);
|
||||
}
|
||||
#endif
|
||||
|
||||
free(aesPass);
|
||||
free(aesSalt);
|
||||
}
|
||||
|
||||
void writeFile(char *filename, unsigned char *file, size_t fileLength) {
|
||||
FILE *fd = fopen(filename, "wb");
|
||||
if(fd == NULL) {
|
||||
fprintf(stderr, "Failed to open file: %s\n", strerror(errno));
|
||||
exit(1);
|
||||
}
|
||||
|
||||
size_t bytesWritten = fwrite(file, 1, fileLength, fd);
|
||||
|
||||
if(bytesWritten != fileLength) {
|
||||
fprintf(stderr, "Failed to write file\n");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
fclose(fd);
|
||||
}
|
||||
|
||||
int readFile(char *filename, unsigned char **file) {
|
||||
FILE *fd = fopen(filename, "rb");
|
||||
if(fd == NULL) {
|
||||
fprintf(stderr, "Failed to open file: %s\n", strerror(errno));
|
||||
exit(1);
|
||||
}
|
||||
|
||||
// Determine size of the file
|
||||
fseek(fd, 0, SEEK_END);
|
||||
size_t fileLength = ftell(fd);
|
||||
fseek(fd, 0, SEEK_SET);
|
||||
|
||||
// Allocate space for the file
|
||||
*file = (unsigned char*)malloc(fileLength);
|
||||
if(*file == NULL) {
|
||||
fprintf(stderr, "Failed to allocate memory\n");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
// Read the file into the buffer
|
||||
size_t bytesRead = fread(*file, 1, fileLength, fd);
|
||||
|
||||
if(bytesRead != fileLength) {
|
||||
fprintf(stderr, "Error reading file\n");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
fclose(fd);
|
||||
|
||||
return fileLength;
|
||||
}
|
||||
#include "aes.hpp"
|
||||
#include "crypt.hpp"
|
||||
#include "decrypt.hpp"
|
||||
|
||||
int main(int argc, char* argv[]) {
|
||||
if(argc != 2) {
|
||||
fprintf(stderr, "No file argument supplied.\n");
|
||||
std::cerr << "No file argument supplied.\n";
|
||||
return 1;
|
||||
}
|
||||
|
||||
EVP_CIPHER_CTX* aesEncryptCtx = (EVP_CIPHER_CTX*)malloc(sizeof(EVP_CIPHER_CTX));
|
||||
EVP_CIPHER_CTX* aesDecryptCtx = (EVP_CIPHER_CTX*)malloc(sizeof(EVP_CIPHER_CTX));
|
||||
if(aesDecryptCtx == NULL || aesEncryptCtx == NULL) {
|
||||
return FAILURE;
|
||||
}
|
||||
|
||||
unsigned char* aesKey = (unsigned char*)malloc(AES_KEYLEN/8);
|
||||
unsigned char* aesIV = (unsigned char*)malloc(AES_KEYLEN/8);
|
||||
|
||||
init_all(aesEncryptCtx, aesDecryptCtx, aesKey, aesIV);
|
||||
|
||||
//***************************************************
|
||||
char* filename = argv[1];
|
||||
|
||||
aes O = crypt(filename);
|
||||
|
||||
// Read the file to encrypt
|
||||
unsigned char *file;
|
||||
size_t fileLength = readFile(filename, &file);
|
||||
// readFile fait l'aloccation mémoire !!! pensé au free
|
||||
size_t fileLength = O.readFile(&file);
|
||||
printf("%d bytes to be encrypted\n", (int)fileLength);
|
||||
|
||||
|
||||
// Encrypt the file
|
||||
unsigned char *encryptedFile;
|
||||
int encryptedFileLength;
|
||||
if((encryptedFileLength = aesEncrypt(aesEncryptCtx, aesKey, aesIV, (const unsigned char*)file, fileLength, &encryptedFile)) == -1) {
|
||||
fprintf(stderr, "Encryption failed\n");
|
||||
return 1;
|
||||
}
|
||||
printf("%d bytes encrypted\n", encryptedFileLength);
|
||||
|
||||
// Append .enc to the filename
|
||||
char *encryptedFilename = (char*)malloc(strlen(filename) + 5);
|
||||
if(encryptedFilename == NULL) {
|
||||
fprintf(stderr, "Failed to allocate memory\n");
|
||||
return 1;
|
||||
}
|
||||
sprintf(encryptedFilename, "%s.enc", filename);
|
||||
|
||||
// Write the encrypted file to its own file
|
||||
writeFile(encryptedFilename, encryptedFile, encryptedFileLength);
|
||||
|
||||
std::cerr << "aesKey : ";
|
||||
for (int i = 0; i < 32; i++) {
|
||||
std::cerr << std::hex << aesKey[i];
|
||||
}
|
||||
std::cerr << std::endl;
|
||||
crypt temp = static_cast<crypt>(O);
|
||||
|
||||
// if((encryptedFileLength = (temp).aesEncrypt((const unsigned char*)file, fileLength, &encryptedFile) ) == -1) {
|
||||
// fprintf(stderr, "Encryption failed\n");
|
||||
// return 1;
|
||||
// }
|
||||
// printf("%d bytes encrypted\n", encryptedFileLength);
|
||||
|
||||
printf("Encrypted message written to \"%s\"\n", encryptedFilename);
|
||||
// // Append .enc to the filename
|
||||
// char *encryptedFilename = (char*)malloc(strlen(filename) + 5);
|
||||
// if(encryptedFilename == NULL) {
|
||||
// fprintf(stderr, "Failed to allocate memory\n");
|
||||
// return 1;
|
||||
// }
|
||||
// sprintf(encryptedFilename, "%s.enc", filename);
|
||||
|
||||
// // Write the encrypted file to its own file
|
||||
// writeFile(encryptedFilename, encryptedFile, encryptedFileLength);
|
||||
|
||||
// std::cerr << "aesKey : ";
|
||||
// for (int i = 0; i < 32; i++) {
|
||||
// std::cerr << std::hex << aesKey[i];
|
||||
// }
|
||||
// std::cerr << std::endl;
|
||||
|
||||
// printf("Encrypted message written to \"%s\"\n", encryptedFilename);
|
||||
|
||||
free(file);
|
||||
//***************************************************
|
||||
// //***************************************************
|
||||
|
||||
fileLength = readFile(encryptedFilename, &file);
|
||||
// fileLength = readFile(encryptedFilename, &file);
|
||||
|
||||
// Decrypt the encrypted file
|
||||
unsigned char *decryptedFile;
|
||||
int decryptedFileLength;
|
||||
if((decryptedFileLength = aesDecrypt(aesDecryptCtx, aesKey, aesIV, file, fileLength, &decryptedFile)) == -1) {
|
||||
fprintf(stderr, "Decryption failed\n");
|
||||
return 1;
|
||||
}
|
||||
printf("%d bytes decrypted\n", (int)decryptedFileLength);
|
||||
// // Decrypt the encrypted file
|
||||
// unsigned char *decryptedFile;
|
||||
// int decryptedFileLength;
|
||||
// if((decryptedFileLength = aesDecrypt(aesDecryptCtx, aesKey, aesIV, file, fileLength, &decryptedFile)) == -1) {
|
||||
// fprintf(stderr, "Decryption failed\n");
|
||||
// return 1;
|
||||
// }
|
||||
// printf("%d bytes decrypted\n", (int)decryptedFileLength);
|
||||
|
||||
// Append .dec to the filename
|
||||
char *decryptedFilename = (char*)malloc(strlen(filename) + 5);
|
||||
if(decryptedFilename == NULL) {
|
||||
fprintf(stderr, "Failed to allocate memory\n");
|
||||
return 1;
|
||||
}
|
||||
sprintf(decryptedFilename, "%s.dec", filename);
|
||||
// // Append .dec to the filename
|
||||
// char *decryptedFilename = (char*)malloc(strlen(filename) + 5);
|
||||
// if(decryptedFilename == NULL) {
|
||||
// fprintf(stderr, "Failed to allocate memory\n");
|
||||
// return 1;
|
||||
// }
|
||||
// sprintf(decryptedFilename, "%s.dec", filename);
|
||||
|
||||
// Write the decrypted file to its own file
|
||||
writeFile(decryptedFilename, decryptedFile, decryptedFileLength);
|
||||
printf("Decrypted file written to \"%s\"\n", decryptedFilename);
|
||||
// // Write the decrypted file to its own file
|
||||
// writeFile(decryptedFilename, decryptedFile, decryptedFileLength);
|
||||
// printf("Decrypted file written to \"%s\"\n", decryptedFilename);
|
||||
|
||||
free(decryptedFile);
|
||||
free(file);
|
||||
// free(decryptedFile);
|
||||
// free(file);
|
||||
|
||||
|
||||
//***************************************************
|
||||
clear_all(aesEncryptCtx, aesDecryptCtx, aesKey, aesIV);
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -0,0 +1,256 @@
|
|||
#include <iostream>
|
||||
#include <stdio.h>
|
||||
#include <string>
|
||||
#include <string.h>
|
||||
|
||||
#include <openssl/evp.h>
|
||||
#include <openssl/pem.h>
|
||||
#include <openssl/aes.h>
|
||||
#include <openssl/err.h>
|
||||
#include <openssl/rand.h>
|
||||
|
||||
#define FAILURE -1
|
||||
#define SUCCESS 0
|
||||
|
||||
#define AES_KEYLEN 256
|
||||
#define AES_ROUNDS 6
|
||||
|
||||
|
||||
int aesDecrypt(EVP_CIPHER_CTX* aesDecryptCtx, unsigned char* aesKey, unsigned char* aesIV, unsigned char *encMsg, size_t encMsgLen, unsigned char **decMsg) {
|
||||
size_t decLen = 0;
|
||||
size_t blockLen = 0;
|
||||
|
||||
*decMsg = (unsigned char*)malloc(encMsgLen);
|
||||
if(*decMsg == NULL) return FAILURE;
|
||||
|
||||
if(!EVP_DecryptInit_ex(aesDecryptCtx, EVP_aes_256_cbc(), NULL, aesKey, aesIV)) {
|
||||
return FAILURE;
|
||||
}
|
||||
|
||||
if(!EVP_DecryptUpdate(aesDecryptCtx, (unsigned char*)*decMsg, (int*)&blockLen, encMsg, (int)encMsgLen)) {
|
||||
return FAILURE;
|
||||
}
|
||||
decLen += blockLen;
|
||||
|
||||
if(!EVP_DecryptFinal_ex(aesDecryptCtx, (unsigned char*)*decMsg + decLen, (int*)&blockLen)) {
|
||||
return FAILURE;
|
||||
}
|
||||
decLen += blockLen;
|
||||
|
||||
EVP_CIPHER_CTX_cleanup(aesDecryptCtx);
|
||||
|
||||
return (int)decLen;
|
||||
}
|
||||
|
||||
int aesEncrypt(EVP_CIPHER_CTX* aesEncryptCtx, unsigned char* aesKey, unsigned char* aesIV, const unsigned char *msg, size_t msgLen, unsigned char **encMsg) {
|
||||
size_t blockLen = 0;
|
||||
size_t encMsgLen = 0;
|
||||
|
||||
*encMsg = (unsigned char*)malloc(msgLen + AES_BLOCK_SIZE);
|
||||
if(encMsg == NULL) return FAILURE;
|
||||
|
||||
if(!EVP_EncryptInit_ex(aesEncryptCtx, EVP_aes_256_cbc(), NULL, aesKey, aesIV)) {
|
||||
return FAILURE;
|
||||
}
|
||||
|
||||
if(!EVP_EncryptUpdate(aesEncryptCtx, *encMsg, (int*)&blockLen, (unsigned char*)msg, msgLen)) {
|
||||
return FAILURE;
|
||||
}
|
||||
encMsgLen += blockLen;
|
||||
|
||||
if(!EVP_EncryptFinal_ex(aesEncryptCtx, *encMsg + encMsgLen, (int*)&blockLen)) {
|
||||
return FAILURE;
|
||||
}
|
||||
|
||||
EVP_CIPHER_CTX_cleanup(aesEncryptCtx);
|
||||
|
||||
return encMsgLen + blockLen;
|
||||
}
|
||||
|
||||
void clear_all(EVP_CIPHER_CTX* aesEncryptCtx, EVP_CIPHER_CTX* aesDecryptCtx, unsigned char* aesKey, unsigned char* aesIV) {
|
||||
EVP_CIPHER_CTX_cleanup(aesEncryptCtx);
|
||||
EVP_CIPHER_CTX_cleanup(aesDecryptCtx);
|
||||
|
||||
free(aesEncryptCtx);
|
||||
free(aesDecryptCtx);
|
||||
|
||||
free(aesIV);
|
||||
free(aesKey);
|
||||
}
|
||||
|
||||
void init_all(EVP_CIPHER_CTX* aesEncryptCtx, EVP_CIPHER_CTX* aesDecryptCtx, unsigned char* aesKey, unsigned char* aesIV) {
|
||||
EVP_CIPHER_CTX_init(aesEncryptCtx);
|
||||
EVP_CIPHER_CTX_init(aesDecryptCtx);
|
||||
|
||||
unsigned char *aesPass = (unsigned char*)malloc(AES_KEYLEN/8);
|
||||
unsigned char *aesSalt = (unsigned char*)malloc(8);
|
||||
|
||||
if(aesKey == NULL || aesIV == NULL || aesPass == NULL || aesSalt == NULL) {
|
||||
exit(FAILURE);
|
||||
}
|
||||
|
||||
#define USE_PBKDF
|
||||
#ifdef USE_PBKDF
|
||||
std::cerr << "utilisation de USE_PBKDF" << std::endl;
|
||||
// Get some random data to use as the AES pass and salt
|
||||
if(RAND_bytes(aesPass, AES_KEYLEN/8) == 0) {
|
||||
exit(FAILURE);
|
||||
}
|
||||
|
||||
if(RAND_bytes(aesSalt, 8) == 0) {
|
||||
exit(FAILURE);
|
||||
}
|
||||
|
||||
if(EVP_BytesToKey(EVP_aes_256_cbc(), EVP_sha256(), aesSalt, aesPass, AES_KEYLEN/8, AES_ROUNDS, aesKey, aesIV) == 0) {
|
||||
exit(FAILURE);
|
||||
}
|
||||
#else
|
||||
if(RAND_bytes(aesKey, AES_KEYLEN/8) == 0) {
|
||||
exit(FAILURE);
|
||||
}
|
||||
|
||||
if(RAND_bytes(aesIV, AES_KEYLEN/8) == 0) {
|
||||
exit(FAILURE);
|
||||
}
|
||||
#endif
|
||||
|
||||
free(aesPass);
|
||||
free(aesSalt);
|
||||
}
|
||||
|
||||
void writeFile(char *filename, unsigned char *file, size_t fileLength) {
|
||||
FILE *fd = fopen(filename, "wb");
|
||||
if(fd == NULL) {
|
||||
fprintf(stderr, "Failed to open file: %s\n", strerror(errno));
|
||||
exit(1);
|
||||
}
|
||||
|
||||
size_t bytesWritten = fwrite(file, 1, fileLength, fd);
|
||||
|
||||
if(bytesWritten != fileLength) {
|
||||
fprintf(stderr, "Failed to write file\n");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
fclose(fd);
|
||||
}
|
||||
|
||||
int readFile(char *filename, unsigned char **file) {
|
||||
FILE *fd = fopen(filename, "rb");
|
||||
if(fd == NULL) {
|
||||
fprintf(stderr, "Failed to open file: %s\n", strerror(errno));
|
||||
exit(1);
|
||||
}
|
||||
|
||||
// Determine size of the file
|
||||
fseek(fd, 0, SEEK_END);
|
||||
size_t fileLength = ftell(fd);
|
||||
fseek(fd, 0, SEEK_SET);
|
||||
|
||||
// Allocate space for the file
|
||||
*file = (unsigned char*)malloc(fileLength);
|
||||
if(*file == NULL) {
|
||||
fprintf(stderr, "Failed to allocate memory\n");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
// Read the file into the buffer
|
||||
size_t bytesRead = fread(*file, 1, fileLength, fd);
|
||||
|
||||
if(bytesRead != fileLength) {
|
||||
fprintf(stderr, "Error reading file\n");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
fclose(fd);
|
||||
|
||||
return fileLength;
|
||||
}
|
||||
|
||||
int main(int argc, char* argv[]) {
|
||||
if(argc != 2) {
|
||||
fprintf(stderr, "No file argument supplied.\n");
|
||||
return 1;
|
||||
}
|
||||
|
||||
EVP_CIPHER_CTX* aesEncryptCtx = (EVP_CIPHER_CTX*)malloc(sizeof(EVP_CIPHER_CTX));
|
||||
EVP_CIPHER_CTX* aesDecryptCtx = (EVP_CIPHER_CTX*)malloc(sizeof(EVP_CIPHER_CTX));
|
||||
if(aesDecryptCtx == NULL || aesEncryptCtx == NULL) {
|
||||
return FAILURE;
|
||||
}
|
||||
|
||||
unsigned char* aesKey = (unsigned char*)malloc(AES_KEYLEN/8);
|
||||
unsigned char* aesIV = (unsigned char*)malloc(AES_KEYLEN/8);
|
||||
|
||||
init_all(aesEncryptCtx, aesDecryptCtx, aesKey, aesIV);
|
||||
|
||||
//***************************************************
|
||||
char* filename = argv[1];
|
||||
|
||||
// Read the file to encrypt
|
||||
unsigned char *file;
|
||||
size_t fileLength = readFile(filename, &file);
|
||||
printf("%d bytes to be encrypted\n", (int)fileLength);
|
||||
|
||||
// Encrypt the file
|
||||
unsigned char *encryptedFile;
|
||||
int encryptedFileLength;
|
||||
if((encryptedFileLength = aesEncrypt(aesEncryptCtx, aesKey, aesIV, (const unsigned char*)file, fileLength, &encryptedFile)) == -1) {
|
||||
fprintf(stderr, "Encryption failed\n");
|
||||
return 1;
|
||||
}
|
||||
printf("%d bytes encrypted\n", encryptedFileLength);
|
||||
|
||||
// Append .enc to the filename
|
||||
char *encryptedFilename = (char*)malloc(strlen(filename) + 5);
|
||||
if(encryptedFilename == NULL) {
|
||||
fprintf(stderr, "Failed to allocate memory\n");
|
||||
return 1;
|
||||
}
|
||||
sprintf(encryptedFilename, "%s.enc", filename);
|
||||
|
||||
// Write the encrypted file to its own file
|
||||
writeFile(encryptedFilename, encryptedFile, encryptedFileLength);
|
||||
|
||||
std::cerr << "aesKey : ";
|
||||
for (int i = 0; i < 32; i++) {
|
||||
std::cerr << std::hex << aesKey[i];
|
||||
}
|
||||
std::cerr << std::endl;
|
||||
|
||||
printf("Encrypted message written to \"%s\"\n", encryptedFilename);
|
||||
|
||||
free(file);
|
||||
//***************************************************
|
||||
|
||||
fileLength = readFile(encryptedFilename, &file);
|
||||
|
||||
// Decrypt the encrypted file
|
||||
unsigned char *decryptedFile;
|
||||
int decryptedFileLength;
|
||||
if((decryptedFileLength = aesDecrypt(aesDecryptCtx, aesKey, aesIV, file, fileLength, &decryptedFile)) == -1) {
|
||||
fprintf(stderr, "Decryption failed\n");
|
||||
return 1;
|
||||
}
|
||||
printf("%d bytes decrypted\n", (int)decryptedFileLength);
|
||||
|
||||
// Append .dec to the filename
|
||||
char *decryptedFilename = (char*)malloc(strlen(filename) + 5);
|
||||
if(decryptedFilename == NULL) {
|
||||
fprintf(stderr, "Failed to allocate memory\n");
|
||||
return 1;
|
||||
}
|
||||
sprintf(decryptedFilename, "%s.dec", filename);
|
||||
|
||||
// Write the decrypted file to its own file
|
||||
writeFile(decryptedFilename, decryptedFile, decryptedFileLength);
|
||||
printf("Decrypted file written to \"%s\"\n", decryptedFilename);
|
||||
|
||||
free(decryptedFile);
|
||||
free(file);
|
||||
|
||||
|
||||
//***************************************************
|
||||
clear_all(aesEncryptCtx, aesDecryptCtx, aesKey, aesIV);
|
||||
return 0;
|
||||
}
|
||||
143
aes.hpp
143
aes.hpp
|
|
@ -0,0 +1,143 @@
|
|||
#ifndef _AES
|
||||
#define _AES
|
||||
|
||||
#include <iostream>
|
||||
#include <stdio.h>
|
||||
#include <string>
|
||||
#include <string.h>
|
||||
|
||||
#include <openssl/evp.h>
|
||||
#include <openssl/pem.h>
|
||||
#include <openssl/aes.h>
|
||||
#include <openssl/err.h>
|
||||
#include <openssl/rand.h>
|
||||
|
||||
#define FAILURE -1
|
||||
#define SUCCESS 0
|
||||
|
||||
#define AES_KEYLEN 256
|
||||
#define AES_ROUNDS 6
|
||||
|
||||
class aes {
|
||||
protected:
|
||||
unsigned char* aesKey;
|
||||
unsigned char* aesIV;
|
||||
private:
|
||||
std::string filename;
|
||||
|
||||
public:
|
||||
aes(std::string _filename);
|
||||
aes(const aes& _e);
|
||||
void init_all();
|
||||
void writeFile(unsigned char *file, size_t fileLength);
|
||||
int readFile(unsigned char **file);
|
||||
void clear_all();
|
||||
~aes();
|
||||
};
|
||||
|
||||
aes::aes(std::string _filename) {
|
||||
filename = _filename;
|
||||
aesKey = (unsigned char*)malloc(AES_KEYLEN/8);
|
||||
aesIV = (unsigned char*)malloc(AES_KEYLEN/8);
|
||||
}
|
||||
|
||||
aes::aes(const aes& _e) : filename(_e.filename) {
|
||||
std::cerr << "salut\n";
|
||||
}
|
||||
|
||||
void aes::init_all() {
|
||||
|
||||
unsigned char *aesPass = (unsigned char*)malloc(AES_KEYLEN/8);
|
||||
unsigned char *aesSalt = (unsigned char*)malloc(8);
|
||||
|
||||
if(aesKey == NULL || aesIV == NULL || aesPass == NULL || aesSalt == NULL) {
|
||||
exit(FAILURE);
|
||||
}
|
||||
|
||||
#define USE_PBKDF
|
||||
#ifdef USE_PBKDF
|
||||
std::cerr << "utilisation de USE_PBKDF" << std::endl;
|
||||
// Get some random data to use as the AES pass and salt
|
||||
if(RAND_bytes(aesPass, AES_KEYLEN/8) == 0) {
|
||||
exit(FAILURE);
|
||||
}
|
||||
|
||||
if(RAND_bytes(aesSalt, 8) == 0) {
|
||||
exit(FAILURE);
|
||||
}
|
||||
|
||||
if(EVP_BytesToKey(EVP_aes_256_cbc(), EVP_sha256(), aesSalt, aesPass, AES_KEYLEN/8, AES_ROUNDS, aesKey, aesIV) == 0) {
|
||||
exit(FAILURE);
|
||||
}
|
||||
#else
|
||||
if(RAND_bytes(aesKey, AES_KEYLEN/8) == 0) {
|
||||
exit(FAILURE);
|
||||
}
|
||||
|
||||
if(RAND_bytes(aesIV, AES_KEYLEN/8) == 0) {
|
||||
exit(FAILURE);
|
||||
}
|
||||
#endif
|
||||
|
||||
free(aesPass);
|
||||
free(aesSalt);
|
||||
}
|
||||
|
||||
// peut être déporté le buffer lut avec methode pour travaillé dessus
|
||||
int aes::readFile(unsigned char **file) {
|
||||
FILE *fd = fopen(filename.c_str(), "rb");
|
||||
if(fd == NULL) {
|
||||
fprintf(stderr, "Failed to open file: %s\n", strerror(errno));
|
||||
exit(1);
|
||||
}
|
||||
|
||||
// Determine size of the file
|
||||
fseek(fd, 0, SEEK_END);
|
||||
size_t fileLength = ftell(fd);
|
||||
fseek(fd, 0, SEEK_SET);
|
||||
|
||||
// Allocate space for the file
|
||||
*file = (unsigned char*)malloc(fileLength);
|
||||
if(*file == NULL) {
|
||||
fprintf(stderr, "Failed to allocate memory\n");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
// Read the file into the buffer
|
||||
size_t bytesRead = fread(*file, 1, fileLength, fd);
|
||||
|
||||
if(bytesRead != fileLength) {
|
||||
fprintf(stderr, "Error reading file\n");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
fclose(fd);
|
||||
|
||||
return fileLength;
|
||||
}
|
||||
|
||||
void aes::writeFile(unsigned char *file, size_t fileLength) {
|
||||
FILE *fd = fopen(filename.c_str(), "wb");
|
||||
if(fd == NULL) {
|
||||
fprintf(stderr, "Failed to open file: %s\n", strerror(errno));
|
||||
exit(1);
|
||||
}
|
||||
|
||||
size_t bytesWritten = fwrite(file, 1, fileLength, fd);
|
||||
|
||||
if(bytesWritten != fileLength) {
|
||||
fprintf(stderr, "Failed to write file\n");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
fclose(fd);
|
||||
}
|
||||
|
||||
void aes::clear_all() {
|
||||
free(aesIV);
|
||||
free(aesKey);
|
||||
}
|
||||
|
||||
aes::~aes() {}
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,75 @@
|
|||
#ifndef _CRYPT
|
||||
#define _CRYPT
|
||||
|
||||
#include "aes.hpp"
|
||||
|
||||
class crypt : public aes {
|
||||
private:
|
||||
EVP_CIPHER_CTX* aesEncryptCtx;
|
||||
|
||||
public:
|
||||
crypt(std::string filename);
|
||||
crypt(const aes& a);
|
||||
void init_all();
|
||||
int aesEncrypt(const unsigned char *msg, size_t msgLen, unsigned char **encMsg);
|
||||
~crypt();
|
||||
};
|
||||
|
||||
crypt::crypt(std::string filename) : aes(filename) {
|
||||
aesEncryptCtx = (EVP_CIPHER_CTX*)malloc(sizeof(EVP_CIPHER_CTX));
|
||||
if(aesEncryptCtx == NULL) {
|
||||
exit(FAILURE);
|
||||
}
|
||||
init_all();
|
||||
}
|
||||
|
||||
crypt::crypt(const aes& _a) : aes(_a) {
|
||||
aesEncryptCtx = (EVP_CIPHER_CTX*)malloc(sizeof(EVP_CIPHER_CTX));
|
||||
if(aesEncryptCtx == NULL) {
|
||||
exit(FAILURE);
|
||||
}
|
||||
int res = EVP_CIPHER_CTX_copy(aesEncryptCtx, static_cast<crypt>(_a).aesEncryptCtx);
|
||||
if(!res)
|
||||
exit(FAILURE);
|
||||
|
||||
// *aesEncryptCtx = (*(static_cast<crypt>(_a)).aesEncryptCtx);
|
||||
}
|
||||
|
||||
void crypt::init_all() {
|
||||
aes::init_all();
|
||||
EVP_CIPHER_CTX_init(aesEncryptCtx);
|
||||
}
|
||||
|
||||
int crypt::aesEncrypt(const unsigned char *msg, size_t msgLen, unsigned char **encMsg) {
|
||||
size_t blockLen = 0;
|
||||
size_t encMsgLen = 0;
|
||||
|
||||
*encMsg = (unsigned char*)malloc(msgLen + AES_BLOCK_SIZE);
|
||||
if(encMsg == NULL) return FAILURE;
|
||||
|
||||
if(!EVP_EncryptInit_ex(aesEncryptCtx, EVP_aes_256_cbc(), NULL, aes::aesKey, aes::aesIV)) {
|
||||
return FAILURE;
|
||||
}
|
||||
|
||||
if(!EVP_EncryptUpdate(aesEncryptCtx, *encMsg, (int*)&blockLen, (unsigned char*)msg, msgLen)) {
|
||||
return FAILURE;
|
||||
}
|
||||
encMsgLen += blockLen;
|
||||
|
||||
if(!EVP_EncryptFinal_ex(aesEncryptCtx, *encMsg + encMsgLen, (int*)&blockLen)) {
|
||||
return FAILURE;
|
||||
}
|
||||
|
||||
EVP_CIPHER_CTX_cleanup(aesEncryptCtx);
|
||||
|
||||
return encMsgLen + blockLen;
|
||||
}
|
||||
|
||||
|
||||
crypt::~crypt() {
|
||||
aes::clear_all();
|
||||
EVP_CIPHER_CTX_cleanup(aesEncryptCtx);
|
||||
free(aesEncryptCtx);
|
||||
}
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,71 @@
|
|||
#ifndef _DECRYPT
|
||||
#define _DECRYPT
|
||||
|
||||
#include "aes.hpp"
|
||||
|
||||
class decrypt : public aes {
|
||||
private:
|
||||
EVP_CIPHER_CTX* aesDecryptCtx;
|
||||
public:
|
||||
decrypt(std::string filename);
|
||||
decrypt(const aes& a);
|
||||
void init_all();
|
||||
int aesDecrypt(unsigned char *encMsg, size_t encMsgLen, unsigned char **decMsg);
|
||||
~decrypt();
|
||||
};
|
||||
|
||||
|
||||
decrypt::decrypt(std::string filename) : aes(filename) {
|
||||
aesDecryptCtx = (EVP_CIPHER_CTX*)malloc(sizeof(EVP_CIPHER_CTX));
|
||||
if(aesDecryptCtx == NULL) {
|
||||
exit(FAILURE);
|
||||
}
|
||||
init_all();
|
||||
}
|
||||
|
||||
decrypt::decrypt(const aes& _a) : aes(_a) {
|
||||
aesDecryptCtx = (EVP_CIPHER_CTX*)malloc(sizeof(EVP_CIPHER_CTX));
|
||||
if(aesDecryptCtx == NULL) {
|
||||
exit(FAILURE);
|
||||
}
|
||||
*aesDecryptCtx = (*(static_cast<decrypt>(_a)).aesDecryptCtx);
|
||||
}
|
||||
|
||||
void decrypt::init_all() {
|
||||
aes::init_all();
|
||||
EVP_CIPHER_CTX_init(aesDecryptCtx);
|
||||
}
|
||||
|
||||
int decrypt::aesDecrypt(unsigned char *encMsg, size_t encMsgLen, unsigned char **decMsg) {
|
||||
size_t decLen = 0;
|
||||
size_t blockLen = 0;
|
||||
|
||||
*decMsg = (unsigned char*)malloc(encMsgLen);
|
||||
if(*decMsg == NULL) return FAILURE;
|
||||
|
||||
if(!EVP_DecryptInit_ex(aesDecryptCtx, EVP_aes_256_cbc(), NULL, aes::aesKey, aes::aesIV)) {
|
||||
return FAILURE;
|
||||
}
|
||||
|
||||
if(!EVP_DecryptUpdate(aesDecryptCtx, (unsigned char*)*decMsg, (int*)&blockLen, encMsg, (int)encMsgLen)) {
|
||||
return FAILURE;
|
||||
}
|
||||
decLen += blockLen;
|
||||
|
||||
if(!EVP_DecryptFinal_ex(aesDecryptCtx, (unsigned char*)*decMsg + decLen, (int*)&blockLen)) {
|
||||
return FAILURE;
|
||||
}
|
||||
decLen += blockLen;
|
||||
|
||||
EVP_CIPHER_CTX_cleanup(aesDecryptCtx);
|
||||
|
||||
return (int)decLen;
|
||||
}
|
||||
|
||||
decrypt::~decrypt() {
|
||||
aes::clear_all();
|
||||
EVP_CIPHER_CTX_cleanup(aesDecryptCtx);
|
||||
free(aesDecryptCtx);
|
||||
}
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue