[Bug 2078395] [NEW] [SRU] Add RSA3072 support to jammy

[ethan.hsieh]

Public bug reported:

[Impact]

The mkimage command is used to create images for use with the U-Boot boot loader.
mkimage on jammy doesn't support RSA3072.

The patch for adding RSA3072 support
https://github.com/u-boot/u-boot/commit/2a4b0d5890deb0c973f8db7bb03adad96aff1050

[Test case]

Create a test fitimage and sign with rsa3072 algorithm.
$ sudo mkimage -F -k keydir -f fdt.its test.dtb

[Where problems could occur]

The regression risk should be low because this patch just adds RSA3072
support.

[Other Info]

The patch is already in Noble, so we only need to backport to Jammy

** Affects: u-boot (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: oem-priority originate-from-2076399

** Tags added: oem-priority originate-from-2076399

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https://bugs.launchpad.net/bugs/2078395

Title:
  [SRU] Add RSA3072 support to jammy

Status in u-boot package in Ubuntu:
  New

Bug description:
  [Impact]

  The mkimage command is used to create images for use with the U-Boot boot loader.
  mkimage on jammy doesn't support RSA3072.

  The patch for adding RSA3072 support
  https://github.com/u-boot/u-boot/commit/2a4b0d5890deb0c973f8db7bb03adad96aff1050

  [Test case]

  Create a test fitimage and sign with rsa3072 algorithm.
  $ sudo mkimage -F -k keydir -f fdt.its test.dtb

  [Where problems could occur]

  The regression risk should be low because this patch just adds RSA3072
  support.

  [Other Info]

  The patch is already in Noble, so we only need to backport to Jammy

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