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This project forked from kkayataka/plusaes

Header only C++ AES cipher library

License: Boost Software License 1.0

Shell 0.08% C++ 98.69% C 1.04% Objective-C 0.10% Makefile 0.04% M4 0.05%

plusaes's Introduction

plusaes

Header only C++ AES cipher library.

Development Environment

Visual Studio 16 2019 (v142)
Xcode 11.4 (Apple clang 11.0.0)
GCC 4.8.5 (CentOS 7)

Supported block cipher mode

ECB
CBC
GCM
CTR (Beta)

Usage

For example, about AES-CBC 128-bit. Encrypts by the plusaes::encrypt_cbc and decripts by the plusaes::decrypt_cbc.

You can use convenient functions like plusaes::key_from_string and plusaes::get_padded_encrypted_size.

#include "plusaes/plusaes.hpp"

#include <string>
#include <vector>

int main() {
    // AES-CBC 128-bit

    // parameters
    const std::string raw_data = "Hello, plusaes";
    const std::vector<unsigned char> key = plusaes::key_from_string(&"EncryptionKey128"); // 16-char = 128-bit
    const unsigned char iv[16] = {
        0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
        0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
    };

    // encrypt
    const unsigned long encrypted_size = plusaes::get_padded_encrypted_size(raw_data.size());
    std::vector<unsigned char> encrypted(encrypted_size);

    plusaes::encrypt_cbc((unsigned char*)raw_data.data(), raw_data.size(), &key[0], key.size(), &iv, &encrypted[0], encrypted.size(), true);
    // fb 7b ae 95 d5 0f c5 6f 43 7d 14 6b 6a 29 15 70

    // decrypt
    unsigned long padded_size = 0;
    std::vector<unsigned char> decrypted(encrypted_size);

    plusaes::decrypt_cbc(&encrypted[0], encrypted.size(), &key[0], key.size(), &iv, &decrypted[0], decrypted.size(), &padded_size);
    // Hello, plusaes
}