Rijndael 알고리즘을 이용한 암호화 예제 C#

• 암호화 모듈
  https://msdn.microsoft.com/ko-kr/library/system.security.cryptography.rijndaelmanaged(v=vs.110).aspx
  

  using System.Security.Cryptography;
  
  private static readonly int KEYSIZE = 128;
  private static readonly int BLOCKSIZE = 128;
  
  private readonly RijndaelManaged rijndael = new RijndaelManaged();
  
  rijndael.Mode = CipherMode.CBC;
  rijndael.Padding = PaddingMode.PKCS7;
  rijndael.KeySize = KEYSIZE;
  rijndael.BlockSize = BLOCKSIZE;
  
  // 복호화
  public byte[] decrypt(byte[] inputBuffer)
  {
      return rijndael.CreateDecryptor().TransformFinalBlock(inputBuffer, 0, inputBuffer.Length);
  }
  // 암호화
  public byte[] encrypt(byte[] inputBuffer)
  {
       return rijndael.CreateEncryptor().TransformFinalBlock(inputBuffer, 0, inputBuffer.Length);
  }

Rijndael 알고리즘을 이용한 암호화 처리.

byte[]로 되어 있는 rijndael.Key, rijndael.IV를 키로 사용하여 암호화, 복호화를 진행한다.