/// <summary>
/// 打开并以用户权限进入加密狗
/// </summary>
/// <param name="errMsg"></param>
public static bool OpenDog(out string errMsg)
{
errMsg = string.Empty;
int index = 1;//默认仅打开第一个加密狗
byte[] bytPID = new byte[8];
bytPID = System.Text.Encoding.ASCII.GetBytes(Properties.Resources.PID);
uint result = ET99_API.et_OpenToken(ref ET99_API.dogHandle, bytPID, index);
if (result == ET99_API.ET_SUCCESS)//打开成功
{
byte[] bytPIN = new byte[16];
bytPIN = System.Text.Encoding.ASCII.GetBytes(Properties.Resources.UserPIN);
result = ET99_API.et_Verify(ET99_API.dogHandle, ET99_API.ET_VERIFY_USERPIN, bytPIN);
if (result == ET99_API.ET_SUCCESS)
{
return(true);
}
else
{
errMsg = string.Format("加密狗认证失败，请检查！\r\n错误：{0}",
ET99_API.ShowResultText(result));
return(false);
}
}
else
{
errMsg = string.Format("打开加密狗失败，请检查！\r\n错误：{0}",
ET99_API.ShowResultText(result));
return(false);
}
}
/// <summary>
/// 临时获得管理员权限，写入数据到加密狗，然后返回到用户权限
/// </summary>
/// <param name="origin">欲写入的原始字串</param>
/// <param name="offset">偏移字节地址</param>
public static void TempAdminWriteDog(string origin, int offset)
{
//因为此函数的调用前提是通过校验了的狗，省略相关校验，加速
//获取SOPIN
string sopin = Helper.ReadOffsetDataAndDecrypt(0, 32);
//提升管理员权限
byte[] bytPIN = new byte[16];
bytPIN = System.Text.Encoding.ASCII.GetBytes(sopin);
ET99_API.et_Verify(ET99_API.dogHandle, ET99_API.ET_VERIFY_SOPIN, bytPIN);
//写入
int intRandom = new Random().Next(1, 9); //随即取1~8
string key16 = Helper.HMAC_MD5_dog(intRandom, "武汉创方科技");
string encryptString = Helper.RC2Encrypt(origin, key16); //密文
byte[] zyn = System.Text.Encoding.Default.GetBytes(encryptString);
ET99_API.et_Write(ET99_API.dogHandle, (ushort)offset, zyn.Length, zyn);
//重新进入用户权限
bytPIN = System.Text.Encoding.ASCII.GetBytes(Properties.Resources.UserPIN);
ET99_API.et_Verify(ET99_API.dogHandle, ET99_API.ET_VERIFY_USERPIN, bytPIN);
}
