/// <summary>
/// 解压缩字符串
/// </summary>
/// <param name="source"></param>
/// <param name="key"></param>
/// <returns></returns>
public static string UnCryString(string source, string key)
{
string tmpStr = I3MD5.MD5String(key);
byte[] keyBytes = Encoding.ASCII.GetBytes(tmpStr); //32*8
byte[] ivBytes = Encoding.ASCII.GetBytes(I3StringUtil.SubString(tmpStr, 0, 16)); //16*8
return(I3CryWeb.Decrypt(source, "Rijndael", keyBytes, ivBytes));
}
/// <summary>
/// 加密流
/// </summary>
/// <param name="source"></param>
/// <param name="dest"></param>
/// <param name="key"></param>
/// <returns></returns>
public static I3MsgInfo CryStream(Stream source, Stream dest, string key)
{
try
{
string tmpStr = I3MD5.MD5String(key);
byte[] keyBytes = Encoding.ASCII.GetBytes(tmpStr); //32*8
byte[] ivBytes = Encoding.ASCII.GetBytes(I3StringUtil.SubString(tmpStr, 0, 16)); //16*8
SymmetricAlgorithm sym = SymmetricAlgorithm.Create("Rijndael");
sym.Key = keyBytes;
sym.IV = ivBytes;
I3CryWeb cry = new I3CryWeb();
cry.EncryptData(source, dest, sym, null, null, null);
return(I3MsgInfo.Default);
}
catch (Exception ex)
{
return(new I3MsgInfo(false, ex.Message, ex));
}
}