Windows: Add DCS EFI Bootloader files that are signed. Add certificates and powershell script to update Secure Boot configuration.

src/Boot/EFI/Readme.txt

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+To update secure boot configuration
+1. Enter BIOS configuration
+2. Switch Secure boot to setup mode (or custom mode). It deletes PK (platform certificate) and allows to load DCS platform key.
+3. Boot Windows
+4. execute from admin command prompt
+   powershell -File sb_set_siglists.ps1
+It sets in PK (platform key) - DCS_platform
+It sets in KEK (key exchange key) - DCS_key_exchange
+It sets in db - DCS_sign MicWinProPCA2011_2011-10-19 MicCorUEFCA2011_2011-06-27 
+
+All DCS modules are protected by DCS_sign. 
+All Windows modules are protected by MicWinProPCA2011_2011-10-19
+All SHIM(linux) modules are protected by MicCorUEFCA2011_2011-06-27 

src/Boot/EFI/certs/Readme.txt

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+Apart from DCS certificates, there are two public DB entries - one for Windows and one for the UEFI Certificate Authority (CA).
+Windows DB: http://www.microsoft.com/pkiops/certs/MicWinProPCA2011_2011-10-19.crt
+UEFI DB: http://www.microsoft.com/pkiops/certs/MicCorUEFCA2011_2011-06-27.crt 

src/Boot/EFI/sb_set_siglists.ps1

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+Set-ExecutionPolicy Bypass -Force
+Import-Module secureboot
+
+Set-SecureBootUEFI -Name PK -Time 2015-09-11 -Content $null
+Set-SecureBootUEFI -Name KEK -Time 2015-09-11 -Content $null
+Set-SecureBootUEFI -Name db -Time 2015-09-11 -Content $null
+Set-SecureBootUEFI -Name dbx -Time 2015-09-11 -Content $null
+
+Write-Host "Setting self-signed PK..."
+Set-SecureBootUEFI -Time 2016-08-08T00:00:00Z -ContentFilePath siglists\DCS_platform_SigList.bin -SignedFilePath siglists\DCS_platform_SigList_Serialization.bin.p7 -Name PK
+
+Write-Host "Setting PK-signed KEK..."
+Set-SecureBootUEFI -Time 2016-08-08T00:00:00Z -ContentFilePath siglists\DCS_key_exchange_SigList.bin -SignedFilePath siglists\DCS_key_exchange_SigList_Serialization.bin.p7 -Name KEK
+
+Write-Host "Setting KEK-signed DCS cert in db..."
+Set-SecureBootUEFI -Time 2016-08-08T00:00:00Z -ContentFilePath siglists\DCS_sign_SigList.bin -SignedFilePath siglists\DCS_sign_SigList_Serialization.bin.p7 -Name db
+
+Write-Host "Setting KEK-signed MS cert in db..."
+Set-SecureBootUEFI -Time 2016-08-08T00:00:00Z -ContentFilePath siglists\MicWinProPCA2011_2011-10-19_SigList.bin -SignedFilePath siglists\MicWinProPCA2011_2011-10-19_SigList_Serialization.bin.p7 -Name db -AppendWrite:$true
+
+Write-Host "Setting KEK-signed MS UEFI cert in db..."
+Set-SecureBootUEFI -Time 2016-08-08T00:00:00Z -ContentFilePath siglists\MicCorUEFCA2011_2011-06-27_SigList.bin -SignedFilePath siglists\MicCorUEFCA2011_2011-06-27_SigList_Serialization.bin.p7 -Name db -AppendWrite:$true