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Qualcomm devices use a special `wrappedkey` mode for FBE. This is ported
from CAF
https://source.codeaurora.org/quic/la/platform/system/vold/commit/?h=LA.UM.7.8.r4-01000-SDM710.0&id=9229262d893a8592f7bc1b4e8a8dab7aad8df68c,
originally by folks at Mokee for vold
https://mokeedev.review/c/MoKee/android_system_vold/+/34102.
This patch ports the above changes to `ext4crypt`, which we can use in
recovery. Note that since we do not have `fs_mgr` in the recovery, we
cannot read the `wrappedkey` flag from fstab. Instead, similar to
`fbe.contents`, we use a special property `fbe.data.wrappedkey` to
indicate support for wrappedkey mode. Devices that need to use this
should set this property to `true` to activate corresponding code.
Change-Id: I79c2855d577156670b45c10c7c7b1fcd9fece8d9
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Building in 9.0 may require you to add a flag to your twrp fstab
with the fileencryption details like:
fileencryption=ice:aes-256-heh
Verify this against your device's stock fstab of course.
Change-Id: If9286f5d5787280814daca9fbc8f5191ff26a839
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Includes various minor fixes for building in Android 8 trees with r23+ tag
Update FBE extended header in libtar to version 2 and include the entire
ext4_encryption_policy structure now after translating the policy.
See this post for more details:
https://plus.google.com/u/1/+DeesTroy/posts/i33ygUi7tiu
Change-Id: I2af981e51f459b17fcd895fb8c2d3f6c8200e24b
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Change-Id: Ib688ddd0c32d3999590cacd86b6d9b18eac336e9
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