Thread: Kobo Libra Colour is using Secure Boot
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Old 08-19-2024, 02:54 PM   #1
NiMa
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Posts: 507
Karma: 2390534
Join Date: Jun 2020
Location: Somewhere in the Universe
Device: Kobo Libra, Glo HD, Touch C/B, Mini, Glo, Aura SE, Clara HD, KT
Angry Kobo Libra Colour is using Secure Boot
I guess this was bound to happen some day... but is also extremely contradictory with Kobo's "Right to repair" philosophy that honestly just seems like the dumbest thing ever said, at least considering what I have discovered.

Code:
## Checking Image at 41000000 ...
   FIT image found
   FIT description: U-Boot fitImage for Poky (Yocto Project Reference Distro)/4.9/aud8113tp1
    Image 0 (kernel@1)
     Description:  Linux kernel
     Type:         Kernel Image
     Compression:  uncompressed
     Data Start:   0x410000fc
     Data Size:    14675968 Bytes = 14 MiB
     Architecture: ARM
     OS:           Linux
     Load Address: 0x40008000
     Entry Point:  0x40008000
     Hash algo:    sha256
     Hash value:   2bae18998544ca39a2cbfe1bcc1a4408ba876db3b470a98689503fee7795d447
    Image 1 (fdt@1)
     Description:  aud8113tp1-E70T00-A0x00.dtb
     Type:         Flat Device Tree
     Compression:  uncompressed
     Data Start:   0x41dff224
     Data Size:    47831 Bytes = 46.7 KiB
     Architecture: ARM
     Load Address: 0x44000000
     Hash algo:    sha256
     Hash value:   7db67257f744a64c42f62fe0e7ef343e1ea5ec0e00a6e1726b78f15075a3bab5
    Default Configuration: 'conf@1'
    Configuration 0 (conf@1)
     Description:  Boot Linux kernel with FDT blob
     Kernel:       kernel@1
     FDT:          fdt@1
     Sign algo:    sha256,rsa2048:dev
     Sign value:   b8f687f70f33eb5597a3ac8d1e4e754d6287ad77a9cfd5dd9082c92ff198e1fd277464ab0141a71fe451fd66fe3780a67efdd0d3d7e77b6fa681ead844e46d10283499f5303c6c312dbca66fe76163f5cf57135b3667c17c80c8301afe40d3289e8272612a8da57462a884a6c41a88290cbd1309ea2aeac0e2abc820a286116f5ba371bfd1f06a7aecea106b2bbcd2c85527d5acf76270dcc7d2f7d5d15d434e3b2845fd8f3ebf770d353adffb156d266d82b5f719608115ec4b65460b7b14d07d234a4dfe92f0a4c560da7092f0dc340a57006f7285ed370d
808bd9b77423e25efd116e463b051c491dec2ece5a5ef96f137007bf81200b50190b239404acec
Kobo is now using signature verification of both the Libra Colour's U-Boot and kernel (Little Kernel is launched first, I don't know yet if that is signed or not). It is probably the case for the Clara Colour as well.

For the less techies out there: this means more locking down from Kobo's end, basically putting them a step closer to Amazon's extremely agressive practices in the jailbreaking world.

This also means that porting Quill OS/InkBox OS to these new devices is currently impossible/very difficult.

I am just angry at them now...
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