banking-secret.cs

public class BankingDetails
{
  protected string EncryptedAccountNumber { get; set; }
  protected string EncryptedRoutingTransitNumber { get; set; }
  
  public string GetAccountNumber (IDecryptor decryptor)
  {
    return string.IsNullOrWhitespace(EncryptedAccountNumber) ? "" : decryptor.Decrypt(EncryptedAccountNumber);
  }
  
  public void SetAccountNumber (IEncryptor encryptor, string accountNumber)
  {
    // TODO: add input checking (format, etc.)
    EncryptedAccountNumber = string.IsNullOrWhitespace(accountNumber) ? "" : encryptor.Encrypt(accountNumber);
  }
  
  // NOTE:
  // ... so on for routing transit number
  //
  // BankingDetails class is an ORM mapped entity,
  // ...and since I did not wanted to include service locator and had no better idea to inject IDecryptor and IEncryptor,
  // ...had to use Get/Set methods (with additional IDecryptor/IEncryptor parameters) instead of plain getters/setters...
}