/// <summary>
/// 使用指定的密钥和向量初始化
/// </summary>
/// <param name="key">密钥</param>
/// <param name="vi">向量</param>
/// <param name="flag">唯一标识，如果传入标识则会将加密器缓存，获取时将使用缓存</param>
/// <param name="setting">额外设置</param>
public YusStringEncrypt(byte[] key, byte[] vi, string flag = null, YusStringEncryptSetting setting = null)
{
// 如果没传设置就使用默认设置
if (setting == null)
{
setting = new YusStringEncryptSetting();
}
//加密解密是常用功能，预加载所需资源
Manager = new RijndaelManaged
{
Mode = setting.Mode,
Padding = setting.Padding,
KeySize = setting.KeySize,
BlockSize = setting.BlockSize,
Key = key, //设定密钥
IV = vi //设定向量
};
// 创建加密器
Encryptor = Manager.CreateEncryptor();
// 创建解密器
Decryptor = Manager.CreateDecryptor();
// 未设置Flag就不操作缓存
if (flag.YusNullOrWhiteSpace())
{
return;
}
// 已存在就替换
if (_InstanceCache.ContainsKey(flag))
{
_InstanceCache[flag] = this;
}
// 否则就新增
else
{
_InstanceCache.Add(flag, this);
}
}
/// <param name="key">密钥</param>
/// <param name="vi">向量</param>
/// <param name="flag">唯一标识，如果传入标识则会将加密器缓存，获取时将使用缓存</param>
/// <param name="setting">额外设置</param>
public static YusStringEncrypt GetInstance(byte[] key, byte[] vi, string flag = null, YusStringEncryptSetting setting = null)
{
var instance = GetInstance(flag);
if (instance != null)
{
return(instance);
}
return(new YusStringEncrypt(key, vi, flag, setting));
}