A class that can be used for encryption/decryption

It can be used to encrypt/decrypt database users and passwords.
Using System;
Using System. IO;
Using System. Text;
Using System. Security. Cryptography;
Namespace Common
{
/// <Summary>
/// Summary of SecurityService.
/// </Summary>
Public class SecurityService
{
Static protected Byte [] byteKey = {125, 14, 45, 67,112, 79, 77, 99, 37,104, 13, 9,118, 51, 87,108 };
Static protected Byte [] byteIV = {86, 19, 79, 15, 72, 58,117, 45 };
Static public string encryption ricencrypt (String sPlainText)
{
Byte [] bytePlaintext;
MemoryStream EncryptedStream;
ICryptoTransform Encryptor;
CryptoStream TheCryptoStream;
If (sPlainText = "") return "";
BytePlaintext = Encoding. ASCII. GetBytes (sPlainText );
EncryptedStream = new MemoryStream (sPlainText. Length );
Encryptor = GetEncryptor ();
TheCryptoStream = new CryptoStream (EncryptedStream, Encryptor, CryptoStreamMode. Write );
TheCryptoStream. Write (bytePlaintext, 0, bytePlaintext. Length );
TheCryptoStream. FlushFinalBlock ();
TheCryptoStream. Close ();
Return Convert. ToBase64String (EncryptedStream. ToArray ());
} // End Function
Static public string encryption ricdecrypt (String sEncryptedText)
{
Byte [] byteEncrypted;
MemoryStream PlaintextStream;
ICryptoTransform Decryptor;
CryptoStream TheCryptoStream;
If (sEncryptedText = "") return "";
ByteEncrypted = Convert. FromBase64String (sEncryptedText. Trim ());