public string Login(User user)
{
try
{
var u = _dbcontext.Users.First(s => s.username == user.username);
if (u.passwd == user.passwd)
{
user.Id = u.Id;
user.passwd = "******";
var token = AesTool.Encrypt(Newtonsoft.Json.JsonConvert.SerializeObject(user));
CookieOptions options = new CookieOptions();
options.Expires = DateTime.Now.AddDays(30);
HttpContext.Session.SetString("Token", token);
HttpContext.Response.Cookies.Append("Token", token, options);
return("1");
}
else
{
return("账号或者密码错误");
}
}
catch (Exception ex)
{
return(ex.Message);
}
}
public static DataEntity DeData(string s, string email, string passcode)
{
DataEntity result = null;
try
{
string ds = AesTool.Decrypt(s, passcode);
ds = AesTool.Decrypt(ds, email);
result = Json.String2Object <DataEntity>(ds);
}
catch { }
return(result);
}
public static string EnData(DataEntity data)
{
string s = "";
try
{
s = Json.Object2String(data);
s = AesTool.Encrypt(s, data.User.Email);
s = AesTool.Encrypt(s, data.User.Passcode);
}
catch { }
return(s);
}
/// <summary>
/// 文件加密
/// </summary>
/// <param name="srcFile">源文件</param>
/// <param name="dstFile">目标文件</param>
/// <param name="password">加密密码</param>
/// <param name="progress">回调进度</param>
/// <param name="overwrite">是否覆盖已有目标文件</param>
/// <returns>
/// >0：操作成功（操作共计秒数）
/// -11：要加密的文件不存在
/// -12：加密后的目标文件已存在
/// -404：未知错误，操作失败
/// </returns>
public static int Encrypt(string srcFile, string dstFile, string password, ProgressDelegate.ProgressHandler progress = null, object sender = null, bool overwrite = true)
{
DateTime beginTime = DateTime.Now;
if (!File.Exists(srcFile))
{
return(-11); //要加密的文件不存在
}
if (File.Exists(dstFile) && !overwrite)
{
return(-12); //加密后的目标文件已存在
}
string fmtPwd = AesTool.FmtPassword(password);
string pwdMd5 = MD5Tool.Encrypt(MD5Tool.Encrypt(fmtPwd));
string md5 = FileTool.GetMD5(srcFile);
using (FileStream fsRead = new FileStream(srcFile, FileMode.Open))
{
using (FileStream fsWrite = new FileStream(dstFile, FileMode.Create))
{
try
{
//写入文件类型标识和版本号
byte[] filetypeandversion = Encoding.Default.GetBytes(FileType + FileVersion);
fsWrite.Write(filetypeandversion, 0, filetypeandversion.Length);
//文件头部数据定义
List <byte[]> headdata = new List <byte[]>()
{
Encoding.Default.GetBytes(FileType),
Encoding.Default.GetBytes(md5),
Encoding.Default.GetBytes(AesTool.Encrypt(fmtPwd, AesTool.DefaultPassword)),
Encoding.Default.GetBytes(pwdMd5),
Encoding.Default.GetBytes(DateTime.Now.ToString())
};
//写入头部信息个数
byte[] count = BitConverter.GetBytes(headdata.Count);
fsWrite.Write(count, 0, count.Length);
//写入各部分长度
for (int i = 0; i < headdata.Count; i++)
{
byte[] length = BitConverter.GetBytes(headdata[i].Length);
fsWrite.Write(length, 0, length.Length);
}
//写入各部分数据
for (int i = 0; i < headdata.Count; i++)
{
fsWrite.Write(headdata[i], 0, headdata[i].Length);
}
//写入文件源数据
int readCount = 0;
byte[] buffer = new byte[FileBuffer];
while ((readCount = fsRead.Read(buffer, 0, buffer.Length)) > 0)
{
if (readCount != buffer.Length)
{
byte[] temp = new byte[readCount];
Buffer.BlockCopy(buffer, 0, temp, 0, readCount);
byte[] enbyte = AesTool.Encrypt(temp, fmtPwd);
fsWrite.Write(enbyte, 0, enbyte.Length);
}
else
{
byte[] enbyte = AesTool.Encrypt(buffer, fmtPwd);
fsWrite.Write(enbyte, 0, enbyte.Length);
}
progress?.Invoke(sender, new ProgressEventArgs(fsRead.Position, fsRead.Length));
}
return((int)Math.Ceiling((DateTime.Now - beginTime).TotalSeconds));//操作成功
}
catch (Exception e) { }
}
//加密失败后，删除加密的文件
try { File.Delete(dstFile); } catch (Exception e) { }
}
return(-404);//未知错误，操作失败
}
/// <summary>
/// 文件解密
/// </summary>
/// <param name="srcFile">源文件</param>
/// <param name="dstFile">目标文件</param>
/// <param name="password">解密密码</param>
/// <param name="progress">回调进度</param>
/// <param name="overwrite">是否覆盖已有目标文件</param>
/// <returns>
/// >0：操作成功（操作共计秒数）
/// -11：要解密的文件不存在
/// -12：解密后的目标文件已存在
/// -20：文件类型不匹配
/// -30：文件头不长度不吻合
/// -90：解锁密码错误
/// -404：未知错误，操作失败
/// </returns>
public static int Decrypt(string srcFile, string dstFile, string password, ProgressDelegate.ProgressHandler progress = null, object sender = null, bool overwrite = true)
{
DateTime beginTime = DateTime.Now;
if (!File.Exists(srcFile))
{
return(-11); //要解密的文件不存在
}
if (File.Exists(dstFile) && !overwrite)
{
return(-12); //解密后的目标文件已存在
}
string fmtPwd = AesTool.FmtPassword(password);
string pwdMd5 = MD5Tool.Encrypt(MD5Tool.Encrypt(fmtPwd));
List <string> headdata = new List <string>();
using (FileStream fsRead = new FileStream(srcFile, FileMode.Open))
{
try
{
//读取文件类型标识和版本号
byte[] filetype = Encoding.Default.GetBytes(FileType);
fsRead.Read(filetype, 0, filetype.Length);
string filetypestr = Encoding.Default.GetString(filetype);
byte[] fileversion = Encoding.Default.GetBytes(FileVersion);
fsRead.Read(fileversion, 0, fileversion.Length);
string fileversionstr = Encoding.Default.GetString(fileversion);
if (filetypestr != FileType && fileversionstr != FileVersion)
{
return(-20); //文件类型不匹配
}
//读取头部信息个数
byte[] count = new byte[4];
fsRead.Read(count, 0, count.Length);
int countint = BitConverter.ToInt32(count, 0);
//读取各部分长度和数据
byte[] headlength = new byte[4 * countint];
if (fsRead.Read(headlength, 0, headlength.Length) == headlength.Length)
{
for (int i = 0; i < countint; i++)
{
int datalong = BitConverter.ToInt32(headlength, i * 4);
byte[] tempdata = new byte[datalong];
fsRead.Read(tempdata, 0, datalong);
headdata.Add(Encoding.Default.GetString(tempdata));
}
}
if (headdata.Count < 5)
{
return(-30); //文件头不长度不吻合
}
if (pwdMd5 != headdata[3])
{
return(-90); //解锁密码错误
}
using (FileStream fsWrite = new FileStream(dstFile, FileMode.Create))
{
int readCount = 0;
byte[] buffer = new byte[FileBuffer + 16];
while ((readCount = fsRead.Read(buffer, 0, buffer.Length)) > 0)
{
if (readCount != buffer.Length)
{
byte[] temp = new byte[readCount];
Buffer.BlockCopy(buffer, 0, temp, 0, readCount);
byte[] debyte = AesTool.Decrypt(temp, fmtPwd);
fsWrite.Write(debyte, 0, debyte.Length);
}
else
{
byte[] debyte = AesTool.Decrypt(buffer, fmtPwd);
fsWrite.Write(debyte, 0, debyte.Length);
}
progress?.Invoke(sender, new ProgressEventArgs(fsRead.Position, fsRead.Length));
}
}
}
catch (Exception e) { }
}
string md5 = FileTool.GetMD5(dstFile);
if (headdata.Count > 1 && md5 == headdata[1])
{
return((int)Math.Ceiling((DateTime.Now - beginTime).TotalSeconds));//操作成功
}
else
{
//解密失败后，删除解密的文件
try { File.Delete(dstFile); } catch (Exception e) { }
}
return(-404);//未知错误，操作失败
}
public static string DePasscode(string email, string passcode)
{
return(AesTool.Decrypt(passcode, email));
}
public static string EnPasscode(string email, string password)
{
return(AesTool.Encrypt(MD5Tool.Encrypt(password), email));
}
