[OS/UBUNTU] openssl 명령 : AES 복호화 파일 생성하기
■ openssl 명령을 사용해 AES 복호화 파일을 생성하는 방법을 보여준다. 1. CTRL + ALT + T 키를 눌러서 [터미널]을 실행한다. 2. [터미널]에서
[태그:] AES
[OS/UBUNTU] openssl 명령 : AES 암호화 파일 생성하기
■ openssl 명령을 사용해 AES 암호화 파일 생성하는 방법을 보여준다. 1. CTRL + ALT + T 키를 눌러서 [터미널]을 실행한다. 2. [터미널]에서
[OS/UBUNTU] openssl 명령 : AES 암호화 파일 생성하기
■ openssl 명령을 사용해 AES 암호화 파일을 생성하는 방법을 보여준다. 1. CTRL + ALT + T 키를 눌러서 [터미널]을 실행한다. 2. [터미널]에서
[RUST/COMMON] AES 암호화 도구 만들기
■ AES 암호화 도구를 만드는 방법을 보여준다. ▶ Cargo.toml
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[package] name = "test_project" version = "0.1.0" edition = "2021" [dependencies] aes = "0.7.5" block-modes = "0.8.1" base64 = "0.13.0" sha2 = "0.9.8" getrandom = "0.2.3" |
▶ src/cipher.rs
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use aes; use block_modes; use block_modes::block_padding; use block_modes::BlockMode; use sha2; use sha2::Digest; type AesCbc = block_modes::Cbc<aes::Aes256, block_padding::Pkcs7>; const SALT : &str = "LFsMH#kL!IfY:dcEz9F/dvj17nUN"; pub fn encrypt(plain_text : &str, password : &str, initial_value_byte_vector : &Vec<u8>) -> String { let key_byte_vector : Vec<u8> = get_key_byte_vector(password); let cbc : block_modes::Cbc<aes::Aes256, block_padding::Pkcs7> = AesCbc::new_from_slices(&key_byte_vector, &initial_value_byte_vector).unwrap(); let encrypted_byte_vector : Vec<u8> = cbc.encrypt_vec(plain_text.as_bytes()); let encrypted_text : String = base64::encode(encrypted_byte_vector); return encrypted_text; } pub fn decrypt(encrypted_text : &str, password : &str, initial_value_byte_vector : &Vec<u8>) -> String { let key_byte_vector : Vec<u8> = get_key_byte_vector(password); let encrypted_byte_vector : Vec<u8> = base64::decode(encrypted_text).unwrap(); let cbc : block_modes::Cbc<aes::Aes256, block_padding::Pkcs7> = AesCbc::new_from_slices(&key_byte_vector, initial_value_byte_vector).unwrap(); let plain_byte_vector : Vec<u8> = cbc.decrypt_vec(&encrypted_byte_vector).unwrap(); return String::from_utf8(plain_byte_vector).unwrap(); } fn get_key_byte_vector(password : &str) -> Vec<u8> { let password_salt : String = format!("{}::{}", password, SALT); let mut sha256 : sha2::Sha256 = sha2::Sha256::new(); sha256.update(password_salt.as_bytes()); return sha256.finalize().to_vec(); } pub fn get_initial_value_byte_vector() -> Vec<u8> { let mut initial_value_byte_vector : Vec<u8> = vec! [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ]; getrandom::getrandom(&mut initial_value_byte_vector).unwrap(); return initial_value_byte_vector; } |
▶ src/main.rs
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use std::env; mod cipher; fn main() { let argument_vector : Vec<String> = env::args().collect(); if argument_vector.len() < 4 { print_usage_message(); return; } let method : String = String::from(argument_vector[1].trim()); let password : String = String::from(argument_vector[2].trim()); let source : String = String::from(argument_vector[3].trim()); let initial_value_byte_vector : Vec<u8> = cipher::get_initial_value_byte_vector(); let target : String = match &method[..] { "enc" => cipher::encrypt(&source, &password, &initial_value_byte_vector), "dec" => cipher::decrypt(&source, &password, &initial_value_byte_vector), _ => { print_usage_message(); return; } }; println!("{}", target); } fn print_usage_message() { println!("[USAGE] test_project (enc|dec) password source"); } |
test_project.zip
[RUST/COMMON] 크레이트 설치 : aes
■ aes 크레이트를 설치하는 방법을 보여준다. ▶ Cargo.toml
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... [dependencies] aes = "0.7.5" |
[C#/COMMON] AesCryptoServiceProvider 클래스 : 암호화/복호화 사용하기
■ AesCryptoServiceProvider 클래스를 사용해 암호화/복호화하는 방법을 보여준다. ▶ SecurityHelper.cs
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using System; using System.IO; using System.Security.Cryptography; using System.Text; namespace TestProject { /// <summary> /// 보안 헬퍼 /// </summary> public static class SecurityHelper { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// RNG 암호 서비스 공급자 /// </summary> private static RNGCryptoServiceProvider _provider = new RNGCryptoServiceProvider(); #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Public #region 문자열로 암호화하기 - EncryptToString(source, password, salt) /// <summary> /// 문자열로 암호화하기 /// </summary> /// <param name="source">소스 문자열</param> /// <param name="password">패스워드</param> /// <param name="salt">솔트</param> /// <returns>암호화 문자열</returns> public static string EncryptToString(string source, string password, string salt) { return GetHexadecimalString(Encrypt(source, password, salt)); } #endregion #region 문자열에서 복호화하기 - DecryptFromString(source, password, salt) /// <summary> /// 문자열에서 복호화하기 /// </summary> /// <param name="source">소스 문자열</param> /// <param name="password">패스워드</param> /// <param name="salt">솔트</param> /// <returns>복호화 문자열</returns> public static string DecryptFromString(string source, string password, string salt) { return Decrypt(GetByteArrayFromHexadecimalString(source), password, salt); } #endregion #region 임의 정수 값 구하기 - GetRandomIntegerValue(minimumValue, maximumValue) /// <summary> /// 임의 정수 값 구하기 /// </summary> /// <param name="minimumValue">최소 값</param> /// <param name="maximumValue">최대 값</param> /// <returns>임의 정수 값</returns> public static int GetRandomIntegerValue(int minimumValue, int maximumValue) { uint scale = uint.MaxValue; while(scale == uint.MaxValue) { byte[] byteArray = new byte[4]; _provider.GetBytes(byteArray); scale = BitConverter.ToUInt32(byteArray, 0); } return (int)(minimumValue + (maximumValue - minimumValue) * (scale / (double)uint.MaxValue)); } #endregion #region 임의 솔트 구하기 - GetRandomSalt() /// <summary> /// 임의 솔트 구하기 /// </summary> /// <returns>임의 솔트</returns> public static string GetRandomSalt() { int byteArrayLength = GetRandomIntegerValue(10, 20); byte[] saltByteArray = new byte[byteArrayLength]; _provider.GetBytes(saltByteArray); return GetHexadecimalString(saltByteArray); } #endregion //////////////////////////////////////////////////////////////////////////////// Private #region 16진수 문자열에서 바이트 배열 구하기 - GetByteArrayFromHexadecimalString(source) /// <summary> /// 16진수 문자열에서 바이트 배열 구하기 /// </summary> /// <param name="source">소스 문자여</param> /// <returns>바이트 배열</returns> private static byte[] GetByteArrayFromHexadecimalString(string source) { source = source.Replace(" ", string.Empty); int byteCount = source.Length / 2; byte[] targetByteArray = new byte[byteCount]; for(int i = 0; i < byteCount; i++) { targetByteArray[i] = Convert.ToByte(source.Substring(2 * i, 2), 16); } return targetByteArray; } #endregion #region 16진수 문자열 구하기 - GetHexadecimalString(sourceByteArray) /// <summary> /// 16진수 문자열 구하기 /// </summary> /// <param name="sourceByteArray">소스 바이트 배열</param> /// <returns>16진수 문자열</returns> private static string GetHexadecimalString(byte[] sourceByteArray) { string target = string.Empty; foreach(byte sourceByte in sourceByteArray) { target += " " + sourceByte.ToString("X2"); } if(target.Length > 0) { target = target.Substring(1); } return target; } #endregion #region 키/초기 값 만들기 - MakeKeyAndInitialValue(password, saltByteArray, keySizeBitCount, blockSizeBitCount, keyByteArray, initialValueByteArray) /// <summary> /// 키/초기 값 만들기 /// </summary> /// <param name="password">패스워드</param> /// <param name="saltByteArray">솔트 바이트 배열</param> /// <param name="keySizeBitCount">키 크기 비트 카운트</param> /// <param name="blockSizeBitCount">블럭 크기 비트 카운트</param> /// <param name="keyByteArray">키 바이트 배열</param> /// <param name="initialValueByteArray">초기 값 바이트 배열</param> private static void MakeKeyAndInitialValue ( string password, byte[] saltByteArray, int keySizeBitCount, int blockSizeBitCount, ref byte[] keyByteArray, ref byte[] initialValueByteArray ) { Rfc2898DeriveBytes rfc2898DeriveBytes = new Rfc2898DeriveBytes(password, saltByteArray, 513); keyByteArray = rfc2898DeriveBytes.GetBytes(keySizeBitCount / 8); initialValueByteArray = rfc2898DeriveBytes.GetBytes(blockSizeBitCount / 8); } #endregion #region 암호화/복호화하기 - EncryptOrDecrypt(password, sourceByteArray, salt, encrypt) /// <summary> /// 암호화/복호화하기 /// </summary> /// <param name="password">패스워드</param> /// <param name="sourceByteArray">소스 바이트 배열</param> /// <param name="salt">솔트</param> /// <param name="encrypt">암호화 여부</param> /// <returns>암호화/복호화 바이트 배열</returns> private static byte[] EncryptOrDecrypt(string password, byte[] sourceByteArray, string salt, bool encrypt) { AesCryptoServiceProvider provider = new AesCryptoServiceProvider(); int keySizeBitCount = 0; for(int i = 1024; i >= 1; i--) { if(provider.ValidKeySize(i)) { keySizeBitCount = i; break; } } int blockSizeBitCount = provider.BlockSize; byte[] saltByteArray = GetByteArrayFromHexadecimalString(salt); byte[] keyByteArray = null; byte[] initialValueByteArray = null; MakeKeyAndInitialValue(password, saltByteArray, keySizeBitCount, blockSizeBitCount, ref keyByteArray, ref initialValueByteArray); ICryptoTransform cryptoTransform; if(encrypt) { cryptoTransform = provider.CreateEncryptor(keyByteArray, initialValueByteArray); } else { cryptoTransform = provider.CreateDecryptor(keyByteArray, initialValueByteArray); } MemoryStream targetStream = new MemoryStream(); CryptoStream cryptoStream = new CryptoStream(targetStream, cryptoTransform, CryptoStreamMode.Write); cryptoStream.Write(sourceByteArray, 0, sourceByteArray.Length); try { cryptoStream.FlushFinalBlock(); } catch(CryptographicException) { } catch { throw; } byte[] targetByteArray = targetStream.ToArray(); try { cryptoStream.Close(); } catch(CryptographicException) { } catch { throw; } targetStream.Close(); return targetByteArray; } #endregion #region 암호화하기 - Encrypt(source, password, salt) /// <summary> /// 암호화하기 /// </summary> /// <param name="source">소스 문자열</param> /// <param name="password">패스워드</param> /// <param name="salt">솔트</param> /// <returns>암호화 바이트 배열</returns> private static byte[] Encrypt(string source, string password, string salt) { UTF8Encoding encoding = new UTF8Encoding(); byte[] sourceByteArray = encoding.GetBytes(source); return EncryptOrDecrypt(password, sourceByteArray, salt, true); } #endregion #region 복호화하기 - Decrypt(sourceByteArray, password, salt) /// <summary> /// 복호화하기 /// </summary> /// <param name="sourceByteArray">소스 바이트 배열</param> /// <param name="password">패스워드</param> /// <param name="salt">솔트</param> /// <returns>복호화 문자열</returns> private static string Decrypt(byte[] sourceByteArray, string password, string salt) { byte[] targetByteArray = EncryptOrDecrypt(password, sourceByteArray, salt, false); UTF8Encoding encoding = new UTF8Encoding(); return new string(encoding.GetChars(targetByteArray)); } #endregion } } |
▶ Program.cs
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using System; namespace TestProject { /// <summary> /// 프로그램 /// </summary> class Program { //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Private #region 프로그램 시작하기 - Main() /// <summary> /// 프로그램 시작하기 /// </summary> private static void Main() { string plainText = "무궁화 꽃이 피었습니다."; string password = "test"; string salt = SecurityHelper.GetRandomSalt(); string textEncrypted = SecurityHelper.EncryptToString(plainText, password, salt); string textDecrypted = SecurityHelper.DecryptFromString(textEncrypted, password, salt); Console.WriteLine($"평문 : {plainText}"); Console.WriteLine($"패스워드 : {password}"); Console.WriteLine($"솔트 : {salt}"); Console.WriteLine($"암호문 : {textEncrypted}"); Console.WriteLine($"복호문 : {textDecrypted}"); } #endregion } } |
TestProject.zip
[C#/COMMON] RijndaelManaged 클래스 : 대칭키 암호화하기
■ RijndaelManaged 클래스를 사용해 대칭키 암호화하는 방법을 보여준다. ▶ MainForm.cs
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using System; using System.Windows.Forms; namespace TestProject { /// <summary> /// 메인 폼 /// </summary> public partial class MainForm : Form { //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainForm() /// <summary> /// 생성자 /// </summary> public MainForm() { InitializeComponent(); this.processButton.Click += processButton_Click; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private #region 암복호화 버튼 클릭시 처리하기 - processButton_Click(sender, e) /// <summary> /// 암복호화 버튼 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void processButton_Click(object sender, EventArgs e) { string cipherText = AESHelper.Encrypt(this.plainTextTextBox.Text, this.passwordTextBox.Text); this.cipherTextTextBox.Text = cipherText; string plainText = AESHelper.Decrypt(cipherText, this.passwordTextBox.Text); this.resultTextTextBox.Text = plainText; } #endregion } } |
▶ AESHelper.cs
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using System; using System.IO; using System.Security.Cryptography; using System.Text; namespace TestProject { /// <summary> /// AES 헬퍼 /// </summary> public class AESHelper { //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Public #region 암호화 하기 - Encrypt(plainText, password) /// <summary> /// 암호화 하기 /// </summary> /// <param name="plainText">평문 텍스트</param> /// <param name="password">패스워드</param> /// <returns>암호화 텍스트</returns> public static string Encrypt(string plainText, string password) { RijndaelManaged rijndaelManaged = new RijndaelManaged(); byte[] saltArray = new byte[] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; byte[] plaintTextArray = Encoding.Unicode.GetBytes(plainText); Rfc2898DeriveBytes rfc2898DeriveBytes = new Rfc2898DeriveBytes(password, saltArray, 100); ICryptoTransform cryptoTransform = rijndaelManaged.CreateEncryptor(rfc2898DeriveBytes.GetBytes(32), rfc2898DeriveBytes.GetBytes(16)); MemoryStream memoryStream = new MemoryStream(); CryptoStream cryptoStream = new CryptoStream(memoryStream, cryptoTransform, CryptoStreamMode.Write); cryptoStream.Write(plaintTextArray, 0, plaintTextArray.Length); cryptoStream.FlushFinalBlock(); byte[] cipherTextArray = memoryStream.ToArray(); string cipherText = Convert.ToBase64String(cipherTextArray); memoryStream.Close(); cryptoStream.Close(); return cipherText; } #endregion #region 복호화 하기 - Decrypt(cipherText, password) /// <summary> /// 복호화 하기 /// </summary> /// <param name="cipherText">암호화 텍스트</param> /// <param name="password">패스워드</param> /// <returns>평문 텍스트</returns> public static string Decrypt(string cipherText, string password) { RijndaelManaged rijndaelManaged = new RijndaelManaged(); byte[] saltArray = new byte[] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; byte[] cipherTextArray = Convert.FromBase64String(cipherText); byte[] plainTextArray = new byte[cipherTextArray.Length]; Rfc2898DeriveBytes rfc2898DeriveBytes = new Rfc2898DeriveBytes(password, saltArray, 100); ICryptoTransform cryptoTransform = rijndaelManaged.CreateDecryptor(rfc2898DeriveBytes.GetBytes(32), rfc2898DeriveBytes.GetBytes(16)); MemoryStream memoryStream = new MemoryStream(cipherTextArray); CryptoStream cryptoStream = new CryptoStream(memoryStream, cryptoTransform, CryptoStreamMode.Read); int plainTextCount = cryptoStream.Read(plainTextArray, 0, plainTextArray.Length); string plainText = Encoding.Unicode.GetString(plainTextArray, 0, plainTextCount); memoryStream.Close(); cryptoStream.Close(); return plainText; } #endregion } } |
TestProject.zip