Base64加密解密

public class Base64Encrypt
{
public string Base64Code(string content)
{
byte[] bytes = System.Text.Encoding.Default.GetBytes(content);
return Convert.ToBase64String(bytes);
}
public string Base64Decode(string content)
{
byte[] bytes = Convert.FromBase64String(content);
return System.Text.Encoding.Default.GetString(bytes);
}
public string Base64Code(string code, string content)
{
byte[] bytes = System.Text.Encoding.GetEncoding(code).GetBytes(content);
return Convert.ToBase64String(bytes);
}
public string Base64Decode(string code, string content)
{
byte[] bytes = Convert.FromBase64String(content);
return System.Text.Encoding.GetEncoding(code).GetString(bytes);
}
}