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u-boot FIT image signing in dtb
2019 Community Moderator ElectionTrying to understand uboot image copyingHow to create a U-boot Image?Error signing certificateBooting kernel (FIT image) with no rootfsU-Boot : boot without reloading DTBLinux cannot boot with u-boot and FIT(flatten image tree)Getting U-Boot to load dtb from FIT imagelinux FIT image won't boot with standard bootm,bootzLinux: FIT flat image tree format execute a scriptUboot Hangs when Initrd size increased in FIT image
Creating a dtb to attach to u-boot that has public keys to verify a signed FIT image is a 2 step process:
1) dtc u-boot_pubkey.dts -O dtb -o u-boot_pubkey.dtb
2) tools/mkimage -f fitImage.its -K u-boot_pubkey.dtb -k /path/to/keys -r fitImage
After each step the u-boot_pubkey.dtb grows in size.
Why is this the case? Can't the public keys be embedded in the dtb before signing the FIT image? This makes me think the dtb is not reuseable the next time a FIT image is signed.
The above steps were taken from https://elinux.org/images/e/e0/Josserand-schulz-secure-boot.pdf
and do indeed work
Any insight would be helpful.
linux openssl u-boot
asked 23 hours ago
Rich OGradyRich OGrady
1
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Creating a dtb to attach to u-boot that has public keys to verify a signed FIT image is a 2 step process:
1) dtc u-boot_pubkey.dts -O dtb -o u-boot_pubkey.dtb
2) tools/mkimage -f fitImage.its -K u-boot_pubkey.dtb -k /path/to/keys -r fitImage
After each step the u-boot_pubkey.dtb grows in size.
Why is this the case? Can't the public keys be embedded in the dtb before signing the FIT image? This makes me think the dtb is not reuseable the next time a FIT image is signed.
The above steps were taken from https://elinux.org/images/e/e0/Josserand-schulz-secure-boot.pdf
and do indeed work
Any insight would be helpful.
linux openssl u-boot
asked 23 hours ago
Rich OGradyRich OGrady
1
New contributor
Rich OGrady is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
Creating a dtb to attach to u-boot that has public keys to verify a signed FIT image is a 2 step process:
1) dtc u-boot_pubkey.dts -O dtb -o u-boot_pubkey.dtb
2) tools/mkimage -f fitImage.its -K u-boot_pubkey.dtb -k /path/to/keys -r fitImage
After each step the u-boot_pubkey.dtb grows in size.
Why is this the case? Can't the public keys be embedded in the dtb before signing the FIT image? This makes me think the dtb is not reuseable the next time a FIT image is signed.
The above steps were taken from https://elinux.org/images/e/e0/Josserand-schulz-secure-boot.pdf
and do indeed work
Any insight would be helpful.
linux openssl u-boot
asked 23 hours ago
Rich OGradyRich OGrady
1
New contributor
Rich OGrady is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Creating a dtb to attach to u-boot that has public keys to verify a signed FIT image is a 2 step process:
1) dtc u-boot_pubkey.dts -O dtb -o u-boot_pubkey.dtb
2) tools/mkimage -f fitImage.its -K u-boot_pubkey.dtb -k /path/to/keys -r fitImage
After each step the u-boot_pubkey.dtb grows in size.
Why is this the case? Can't the public keys be embedded in the dtb before signing the FIT image? This makes me think the dtb is not reuseable the next time a FIT image is signed.
The above steps were taken from https://elinux.org/images/e/e0/Josserand-schulz-secure-boot.pdf
and do indeed work
Any insight would be helpful.
linux openssl u-boot
linux openssl u-boot
asked 23 hours ago
Rich OGradyRich OGrady
1
New contributor
Rich OGrady is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 23 hours ago
Rich OGradyRich OGrady
1
New contributor
Rich OGrady is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 23 hours ago
Rich OGradyRich OGrady
1
New contributor
Rich OGrady is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 23 hours ago
Rich OGradyRich OGrady
1
asked 23 hours ago
Rich OGradyRich OGrady
1
1
New contributor
Rich OGrady is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Rich OGrady is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Rich OGrady is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
add a comment |
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