Both SHA1 and (especially) MD5 are no longer as safe as they once were for cryptographic use. Replace examples that use them with examples using SHA256 instead. This will provide more-secure defaults for users who use documentation examples as a base for their own use. This is not too necessary for non-verified-boot scenarios (since someone could just replace the checksum), but I wanted to be complete.

All the new hashes were generated like

echo fake kernel hash | sha256sum

which should be fine, since the actual values are just for example anyway.

Signed-off-by: Sean Anderson seanga2@gmail.com Reviewed-by: Simon Glass sjg@chromium.org Reviewed-by: Peter Robinson pbrobinson@gmail.com Reviewed-by: Tom Rini trini@konsulko.com ---

Changes in v2: - Mention CONFIG_SHA256/512 in doc/usage/fit/signature.rst - Describe how the hashes were generated in the commit message

doc/chromium/files/chromebook_jerry.its | 4 +- doc/chromium/files/nyan-big.its | 4 +- doc/usage/cmd/imxtract.rst | 6 +- doc/usage/fit/beaglebone_vboot.rst | 74 ++++++++++++------------ doc/usage/fit/howto.rst | 40 ++++++------- doc/usage/fit/kernel.rst | 6 +- doc/usage/fit/kernel_fdt.rst | 4 +- doc/usage/fit/kernel_fdts_compressed.rst | 6 +- doc/usage/fit/multi-with-fpga.rst | 6 +- doc/usage/fit/multi-with-loadables.rst | 8 +-- doc/usage/fit/multi.rst | 12 ++-- doc/usage/fit/sign-configs.rst | 6 +- doc/usage/fit/sign-images.rst | 4 +- doc/usage/fit/signature.rst | 28 +++++---- doc/usage/fit/update3.rst | 6 +- doc/usage/fit/update_uboot.rst | 2 +- doc/usage/fit/x86-fit-boot.rst | 8 +-- 17 files changed, 115 insertions(+), 109 deletions(-)

diff --git a/doc/chromium/files/chromebook_jerry.its b/doc/chromium/files/chromebook_jerry.its index 7505a20535b..02e5e1340f3 100644 --- a/doc/chromium/files/chromebook_jerry.its +++ b/doc/chromium/files/chromebook_jerry.its @@ -15,7 +15,7 @@ load = <0>; entry = <0>; hash-2 { - algo = "sha1"; + algo = "sha256"; }; };

@@ -26,7 +26,7 @@ arch = "arm"; compression = "none"; hash-1{ - algo = "sha1"; + algo = "sha256"; }; }; }; diff --git a/doc/chromium/files/nyan-big.its b/doc/chromium/files/nyan-big.its index bd412915e95..60bdffbb829 100644 --- a/doc/chromium/files/nyan-big.its +++ b/doc/chromium/files/nyan-big.its @@ -15,7 +15,7 @@ load = <0>; entry = <0>; hash-2 { - algo = "sha1"; + algo = "sha256"; }; };

@@ -26,7 +26,7 @@ arch = "arm"; compression = "none"; hash-1{ - algo = "sha1"; + algo = "sha256"; }; }; }; diff --git a/doc/usage/cmd/imxtract.rst b/doc/usage/cmd/imxtract.rst index eb64b1cefab..16be60b4aab 100644 --- a/doc/usage/cmd/imxtract.rst +++ b/doc/usage/cmd/imxtract.rst @@ -45,14 +45,14 @@ Examples

With verify=no incorrect hashes, signatures, or check sums don't stop the extraction. But correct hashes are still indicated in the output -(here: md5, sha1). +(here: sha256, sha512).

.. code-block:: console

=> setenv verify no => imxtract $loadaddr kernel-1 $kernel_addr_r ## Copying 'kernel-1' subimage from FIT image at 40200000 ... - md5+ sha1+ Loading part 0 ... OK + sha256+ sha512+ Loading part 0 ... OK =>

With verify=yes incorrect hashes, signatures, or check sums stop the extraction. @@ -62,7 +62,7 @@ With verify=yes incorrect hashes, signatures, or check sums stop the extraction. => setenv verify yes => imxtract $loadaddr kernel-1 $kernel_addr_r ## Copying 'kernel-1' subimage from FIT image at 40200000 ... - md5 error! + sha256 error! Bad hash value for 'hash-1' hash node in 'kernel-1' image node Bad Data Hash => diff --git a/doc/usage/fit/beaglebone_vboot.rst b/doc/usage/fit/beaglebone_vboot.rst index a102be187bd..cd6bb141910 100644 --- a/doc/usage/fit/beaglebone_vboot.rst +++ b/doc/usage/fit/beaglebone_vboot.rst @@ -145,7 +145,7 @@ Put this into a file in that directory called sign.its:: load = <0x80008000>; entry = <0x80008000>; hash-1 { - algo = "sha1"; + algo = "sha256"; }; }; fdt-1 { @@ -155,7 +155,7 @@ Put this into a file in that directory called sign.its:: arch = "arm"; compression = "none"; hash-1 { - algo = "sha1"; + algo = "sha256"; }; }; }; @@ -165,7 +165,7 @@ Put this into a file in that directory called sign.its:: kernel = "kernel"; fdt = "fdt-1"; signature-1 { - algo = "sha1,rsa2048"; + algo = "sha256,rsa2048"; key-name-hint = "dev"; sign-images = "fdt", "kernel"; }; @@ -227,8 +227,8 @@ You should see something like this:: OS: Linux Load Address: 0x80008000 Entry Point: 0x80008000 - Hash algo: sha1 - Hash value: c94364646427e10f423837e559898ef02c97b988 + Hash algo: sha256 + Hash value: 51b2adf9c1016ed46f424d85dcc6c34c46a20b9bee7227e06a6b6320ca5d35c1 Image 1 (fdt-1) Description: beaglebone-black Created: Sun Jun 1 12:50:30 2014 @@ -236,8 +236,8 @@ You should see something like this:: Compression: uncompressed Data Size: 31547 Bytes = 30.81 kB = 0.03 MB Architecture: ARM - Hash algo: sha1 - Hash value: cb09202f889d824f23b8e4404b781be5ad38a68d + Hash algo: sha256 + Hash value: 807d5842a04132261ba092373bd40c78991bc7ce173d1175cd976ec37858e7cd Default Configuration: 'conf-1' Configuration 0 (conf-1) Description: unavailable @@ -255,11 +255,11 @@ You can also run fit_check_sign to check it::

which results in::

- Verifying Hash Integrity ... sha1,rsa2048:dev+ + Verifying Hash Integrity ... sha256,rsa2048:dev+ ## Loading kernel from FIT Image at 7fc6ee469000 ... Using 'conf-1' configuration Verifying Hash Integrity ... - sha1,rsa2048:dev+ + sha256,rsa2048:dev+ OK

Trying 'kernel' kernel subimage @@ -272,10 +272,10 @@ which results in:: OS: Linux Load Address: 0x80008000 Entry Point: 0x80008000 - Hash algo: sha1 - Hash value: c94364646427e10f423837e559898ef02c97b988 + Hash algo: sha256 + Hash value: 51b2adf9c1016ed46f424d85dcc6c34c46a20b9bee7227e06a6b6320ca5d35c1 Verifying Hash Integrity ... - sha1+ + sha256+ OK

Unimplemented compression type 4 @@ -288,10 +288,10 @@ which results in:: Compression: uncompressed Data Size: 31547 Bytes = 30.81 kB = 0.03 MB Architecture: ARM - Hash algo: sha1 - Hash value: cb09202f889d824f23b8e4404b781be5ad38a68d + Hash algo: sha256 + Hash value: 807d5842a04132261ba092373bd40c78991bc7ce173d1175cd976ec37858e7cd Verifying Hash Integrity ... - sha1+ + sha256+ OK

Loading Flat Device Tree ... OK @@ -303,14 +303,14 @@ which results in:: Signature check OK

-At the top, you see "sha1,rsa2048:dev+". This means that it checked an RSA key -of size 2048 bits using SHA1 as the hash algorithm. The key name checked was +At the top, you see "sha256,rsa2048:dev+". This means that it checked an RSA key +of size 2048 bits using SHA256 as the hash algorithm. The key name checked was 'dev' and the '+' means that it verified. If it showed '-' that would be bad.

Once the configuration is verified it is then possible to rely on the hashes in each image referenced by that configuration. So fit_check_sign goes on to load each of the images. We have a kernel and an FDT but no ramkdisk. In each -case fit_check_sign checks the hash and prints sha1+ meaning that the SHA1 +case fit_check_sign checks the hash and prints sha256+ meaning that the SHA256 hash verified. This means that none of the images has been tampered with.

There is a test in test/vboot which uses U-Boot's sandbox build to verify that @@ -328,11 +328,11 @@ This tells us that the kernel starts at byte offset 168 (decimal) in image.fit and extends for about 7MB. Try changing a byte at 0x2000 (say) and run fit_check_sign again. You should see something like::

- Verifying Hash Integrity ... sha1,rsa2048:dev+ + Verifying Hash Integrity ... sha256,rsa2048:dev+ ## Loading kernel from FIT Image at 7f5a39571000 ... Using 'conf-1' configuration Verifying Hash Integrity ... - sha1,rsa2048:dev+ + sha256,rsa2048:dev+ OK

Trying 'kernel' kernel subimage @@ -345,10 +345,10 @@ fit_check_sign again. You should see something like:: OS: Linux Load Address: 0x80008000 Entry Point: 0x80008000 - Hash algo: sha1 - Hash value: c94364646427e10f423837e559898ef02c97b988 + Hash algo: sha256 + Hash value: 51b2adf9c1016ed46f424d85dcc6c34c46a20b9bee7227e06a6b6320ca5d35c1 Verifying Hash Integrity ... - sha1 error + sha256 error Bad hash value for 'hash-1' hash node in 'kernel' image node Bad Data Hash

@@ -361,10 +361,10 @@ fit_check_sign again. You should see something like:: Compression: uncompressed Data Size: 31547 Bytes = 30.81 kB = 0.03 MB Architecture: ARM - Hash algo: sha1 - Hash value: cb09202f889d824f23b8e4404b781be5ad38a68d + Hash algo: sha256 + Hash value: 807d5842a04132261ba092373bd40c78991bc7ce173d1175cd976ec37858e7cd Verifying Hash Integrity ... - sha1+ + sha256+ OK

Loading Flat Device Tree ... OK @@ -419,13 +419,13 @@ need to change the hash to match. Let's simulate that by changing a byte of the hash::

fdtget -tx image.fit /images/kernel/hash-1 value - c9436464 6427e10f 423837e5 59898ef0 2c97b988 - fdtput -tx image.fit /images/kernel/hash-1 value c9436464 6427e10f 423837e5 59898ef0 2c97b981 + 51b2adf9 c1016ed4 6f424d85 dcc6c34c 46a20b9b ee7227e0 6a6b6320 ca5d35c1 + fdtput -tx image.fit /images/kernel/hash-1 value 51b2adf9 c1016ed4 6f424d85 dcc6c34c 46a20b9b ee7227e0 6a6b6320 ca5d35c8

Now check it again::

$UOUT/tools/fit_check_sign -f image.fit -k am335x-boneblack-pubkey.dtb - Verifying Hash Integrity ... sha1,rsa2048:devrsa_verify_with_keynode: RSA failed to verify: -13 + Verifying Hash Integrity ... sha256,rsa2048:devrsa_verify_with_keynode: RSA failed to verify: -13 rsa_verify_with_keynode: RSA failed to verify: -13 - Failed to verify required signature 'key-dev' @@ -446,7 +446,7 @@ running the mkimage link again. Then:: fdtput -p image.fit /configurations/conf-1/signature-1 value fred $UOUT/tools/fit_check_sign -f image.fit -k am335x-boneblack-pubkey.dtb Verifying Hash Integrity ... - - sha1,rsa2048:devrsa_verify_with_keynode: RSA failed to verify: -13 + sha256,rsa2048:devrsa_verify_with_keynode: RSA failed to verify: -13 rsa_verify_with_keynode: RSA failed to verify: -13 - Failed to verify required signature 'key-dev' @@ -528,7 +528,7 @@ You should then see something like this:: U-Boot# bootm 82000000 ## Loading kernel from FIT Image at 82000000 ... Using 'conf-1' configuration - Verifying Hash Integrity ... sha1,rsa2048:dev+ OK + Verifying Hash Integrity ... sha256,rsa2048:dev+ OK Trying 'kernel' kernel subimage Description: unavailable Created: 2014-06-01 19:32:54 UTC @@ -540,9 +540,9 @@ You should then see something like this:: OS: Linux Load Address: 0x80008000 Entry Point: 0x80008000 - Hash algo: sha1 - Hash value: c94364646427e10f423837e559898ef02c97b988 - Verifying Hash Integrity ... sha1+ OK + Hash algo: sha256 + Hash value: 51b2adf9c1016ed46f424d85dcc6c34c46a20b9bee7227e06a6b6320ca5d35c1 + Verifying Hash Integrity ... sha256+ OK ## Loading fdt from FIT Image at 82000000 ... Using 'conf-1' configuration Trying 'fdt-1' fdt subimage @@ -553,9 +553,9 @@ You should then see something like this:: Data Start: 0x8276e2ec Data Size: 31547 Bytes = 30.8 KiB Architecture: ARM - Hash algo: sha1 - Hash value: cb09202f889d824f23b8e4404b781be5ad38a68d - Verifying Hash Integrity ... sha1+ OK + Hash algo: sha256 + Hash value: 807d5842a04132261ba092373bd40c78991bc7ce173d1175cd976ec37858e7cd + Verifying Hash Integrity ... sha256+ OK Booting using the fdt blob at 0x8276e2ec Uncompressing Kernel Image ... OK Loading Device Tree to 8fff5000, end 8ffffb3a ... OK diff --git a/doc/usage/fit/howto.rst b/doc/usage/fit/howto.rst index def12a70f7b..b5097d4460b 100644 --- a/doc/usage/fit/howto.rst +++ b/doc/usage/fit/howto.rst @@ -8,7 +8,7 @@ Overview

The new uImage format allows more flexibility in handling images of various types (kernel, ramdisk, etc.), it also enhances integrity protection of images -with sha1 and md5 checksums. +with cryptographic checksums.

Two auxiliary tools are needed on the development host system in order to create an uImage in the new format: mkimage and dtc, although only one @@ -99,7 +99,7 @@ started by ATF where SPL is loading U-Boot (as loadables) and ATF (as firmware). load = <0x8 0x8000000>; entry = <0x8 0x8000000>; hash { - algo = "md5"; + algo = "sha256"; }; }; atf { @@ -112,7 +112,7 @@ started by ATF where SPL is loading U-Boot (as loadables) and ATF (as firmware). load = <0xfffea000>; entry = <0xfffea000>; hash { - algo = "md5"; + algo = "sha256"; }; }; fdt_1 { @@ -123,7 +123,7 @@ started by ATF where SPL is loading U-Boot (as loadables) and ATF (as firmware). compression = "none"; load = <0x100000>; hash { - algo = "md5"; + algo = "sha256"; }; }; }; @@ -190,8 +190,8 @@ its contents: Entry Point: 0x00000000 Hash algo: crc32 Hash value: 2ae2bb40 - Hash algo: sha1 - Hash value: 3c200f34e2c226ddc789240cca0c59fc54a67cf4 + Hash algo: sha256 + Hash value: c22f6bb5a3f96942507a37e7d6a9333ebdc7da57971bc4c082113fe082fdc40f Default Configuration: 'config-1' Configuration 0 (config-1) Description: Boot Linux kernel @@ -236,8 +236,8 @@ specific to the new image format). Entry Point: 0x00000000 Hash algo: crc32 Hash value: 2ae2bb40 - Hash algo: sha1 - Hash value: 3c200f34e2c226ddc789240cca0c59fc54a67cf4 + Hash algo: sha256 + Hash value: c22f6bb5a3f96942507a37e7d6a9333ebdc7da57971bc4c082113fe082fdc40f Default Configuration: 'config-1' Configuration 0 (config-1) Description: Boot Linux kernel @@ -258,8 +258,8 @@ specific to the new image format). Entry Point: 0x00000000 Hash algo: crc32 Hash value: 2ae2bb40 - Hash algo: sha1 - Hash value: 3c200f34e2c226ddc789240cca0c59fc54a67cf4 + Hash algo: sha256 + Hash value: c22f6bb5a3f96942507a37e7d6a9333ebdc7da57971bc4c082113fe082fdc40f Verifying Hash Integrity ... crc32+ sha1+ OK Uncompressing Kernel Image ... OK Memory BAT mapping: BAT2=256Mb, BAT3=0Mb, residual: 0Mb @@ -302,8 +302,8 @@ modified to take the files from some other location if needed): Entry Point: 0x00000000 Hash algo: crc32 Hash value: 2c0cc807 - Hash algo: sha1 - Hash value: 264b59935470e42c418744f83935d44cdf59a3bb + Hash algo: sha256 + Hash value: a3e9e18b793873827d27c97edfbca67c404a1972d9f36cf48e73ff85d69a422c Image 1 (fdt-1) Description: Flattened Device Tree blob Type: Flat Device Tree @@ -312,8 +312,8 @@ modified to take the files from some other location if needed): Architecture: PowerPC Hash algo: crc32 Hash value: 0d655d71 - Hash algo: sha1 - Hash value: 25ab4e15cd4b8a5144610394560d9c318ce52def + Hash algo: sha256 + Hash value: e9b9a40c5e2e12213ac819e7ccad7271ef43eb5edf9b421f0fa0b4b51bfdb214 Default Configuration: 'conf-1' Configuration 0 (conf-1) Description: Boot Linux kernel with FDT blob @@ -353,8 +353,8 @@ inspected and booted: Entry Point: 0x00000000 Hash algo: crc32 Hash value: 2c0cc807 - Hash algo: sha1 - Hash value: 264b59935470e42c418744f83935d44cdf59a3bb + Hash algo: sha256 + Hash value: a3e9e18b793873827d27c97edfbca67c404a1972d9f36cf48e73ff85d69a422c Image 1 (fdt-1) Description: Flattened Device Tree blob Type: Flat Device Tree @@ -364,8 +364,8 @@ inspected and booted: Architecture: PowerPC Hash algo: crc32 Hash value: 0d655d71 - Hash algo: sha1 - Hash value: 25ab4e15cd4b8a5144610394560d9c318ce52def + Hash algo: sha256 + Hash value: e9b9a40c5e2e12213ac819e7ccad7271ef43eb5edf9b421f0fa0b4b51bfdb214 Default Configuration: 'conf-1' Configuration 0 (conf-1) Description: Boot Linux kernel with FDT blob @@ -387,7 +387,7 @@ inspected and booted: Hash algo: crc32 Hash value: 2c0cc807 Hash algo: sha1 - Hash value: 264b59935470e42c418744f83935d44cdf59a3bb + Hash value: a3e9e18b793873827d27c97edfbca67c404a1972d9f36cf48e73ff85d69a422c Verifying Hash Integrity ... crc32+ sha1+ OK Uncompressing Kernel Image ... OK ## Flattened Device Tree from FIT Image at 00900000 @@ -402,7 +402,7 @@ inspected and booted: Hash algo: crc32 Hash value: 0d655d71 Hash algo: sha1 - Hash value: 25ab4e15cd4b8a5144610394560d9c318ce52def + Hash value: e9b9a40c5e2e12213ac819e7ccad7271ef43eb5edf9b421f0fa0b4b51bfdb214 Verifying Hash Integrity ... crc32+ sha1+ OK Booting using the fdt blob at 0xa0abdc Loading Device Tree to 007fc000, end 007fffff ... OK diff --git a/doc/usage/fit/kernel.rst b/doc/usage/fit/kernel.rst index 012a81efead..e56017985b2 100644 --- a/doc/usage/fit/kernel.rst +++ b/doc/usage/fit/kernel.rst @@ -25,7 +25,7 @@ Single kernel algo = "crc32"; }; hash-2 { - algo = "sha1"; + algo = "sha256"; }; }; }; @@ -59,7 +59,7 @@ For x86 a setup node is also required: see x86-fit-boot:: load = <0x01000000>; entry = <0x00000000>; hash-2 { - algo = "sha1"; + algo = "sha256"; }; };

@@ -73,7 +73,7 @@ For x86 a setup node is also required: see x86-fit-boot:: load = <0x00090000>; entry = <0x00090000>; hash-2 { - algo = "sha1"; + algo = "sha256"; }; }; }; diff --git a/doc/usage/fit/kernel_fdt.rst b/doc/usage/fit/kernel_fdt.rst index 8eee13af780..9cc26fb7831 100644 --- a/doc/usage/fit/kernel_fdt.rst +++ b/doc/usage/fit/kernel_fdt.rst @@ -25,7 +25,7 @@ Single kernel and FDT blob algo = "crc32"; }; hash-2 { - algo = "sha1"; + algo = "sha256"; }; }; fdt-1 { @@ -38,7 +38,7 @@ Single kernel and FDT blob algo = "crc32"; }; hash-2 { - algo = "sha1"; + algo = "sha256"; }; }; }; diff --git a/doc/usage/fit/kernel_fdts_compressed.rst b/doc/usage/fit/kernel_fdts_compressed.rst index 0b169c7c27c..b57871da58b 100644 --- a/doc/usage/fit/kernel_fdts_compressed.rst +++ b/doc/usage/fit/kernel_fdts_compressed.rst @@ -28,7 +28,7 @@ string to match directly. algo = "crc32"; }; hash-2 { - algo = "sha1"; + algo = "sha256"; }; }; fdt@1 { @@ -41,7 +41,7 @@ string to match directly. algo = "crc32"; }; hash-2 { - algo = "sha1"; + algo = "sha256"; }; }; fdt@2 { @@ -54,7 +54,7 @@ string to match directly. algo = "crc32"; }; hash-2 { - algo = "sha1"; + algo = "sha256"; }; }; }; diff --git a/doc/usage/fit/multi-with-fpga.rst b/doc/usage/fit/multi-with-fpga.rst index 28d7d5d2626..4c7f1bebd5a 100644 --- a/doc/usage/fit/multi-with-fpga.rst +++ b/doc/usage/fit/multi-with-fpga.rst @@ -20,7 +20,7 @@ This example makes use of the 'loadables' field:: compression = "none"; load = <0x10000000>; hash-1 { - algo = "md5"; + algo = "sha256"; }; };

@@ -33,7 +33,7 @@ This example makes use of the 'loadables' field:: load = <0x30000000>; compatible = "u-boot,fpga-legacy" hash-1 { - algo = "md5"; + algo = "sha256"; }; };

@@ -47,7 +47,7 @@ This example makes use of the 'loadables' field:: load = <0x8000>; entry = <0x8000>; hash-1 { - algo = "md5"; + algo = "sha256"; }; }; }; diff --git a/doc/usage/fit/multi-with-loadables.rst b/doc/usage/fit/multi-with-loadables.rst index a0241df96ca..7849cb544f1 100644 --- a/doc/usage/fit/multi-with-loadables.rst +++ b/doc/usage/fit/multi-with-loadables.rst @@ -22,7 +22,7 @@ This example makes use of the 'loadables' field:: load = <0xa0000000>; entry = <0xa0000000>; hash-1 { - algo = "md5"; + algo = "sha256"; }; };

@@ -34,7 +34,7 @@ This example makes use of the 'loadables' field:: compression = "none"; load = <0xb0000000>; hash-1 { - algo = "md5"; + algo = "sha256"; }; };

@@ -46,7 +46,7 @@ This example makes use of the 'loadables' field:: compression = "none"; load = <0xb0400000>; hash-1 { - algo = "md5"; + algo = "sha256"; }; };

@@ -60,7 +60,7 @@ This example makes use of the 'loadables' field:: load = <0xa0000000>; entry = <0xa0000000>; hash-1 { - algo = "md5"; + algo = "sha256"; }; }; }; diff --git a/doc/usage/fit/multi.rst b/doc/usage/fit/multi.rst index 2e6ae58c409..e68752b2ad0 100644 --- a/doc/usage/fit/multi.rst +++ b/doc/usage/fit/multi.rst @@ -22,10 +22,10 @@ Multiple kernels, ramdisks and FDT blobs load = <00000000>; entry = <00000000>; hash-1 { - algo = "md5"; + algo = "sha256"; }; hash-2 { - algo = "sha1"; + algo = "sha512"; }; };

@@ -39,7 +39,7 @@ Multiple kernels, ramdisks and FDT blobs load = <00000000>; entry = <00000000>; hash-1 { - algo = "sha1"; + algo = "sha256"; }; };

@@ -53,7 +53,7 @@ Multiple kernels, ramdisks and FDT blobs load = <00000000>; entry = <00000000>; hash-1 { - algo = "md5"; + algo = "sha256"; }; };

@@ -67,7 +67,7 @@ Multiple kernels, ramdisks and FDT blobs load = <00000000>; entry = <00000000>; hash-1 { - algo = "sha1"; + algo = "sha256"; }; };

@@ -104,7 +104,7 @@ Multiple kernels, ramdisks and FDT blobs compression = "none"; load = <00700000>; hash-1 { - algo = "sha1"; + algo = "sha256"; }; };

diff --git a/doc/usage/fit/sign-configs.rst b/doc/usage/fit/sign-configs.rst index 6a3df8f2c5b..6d98d44430c 100644 --- a/doc/usage/fit/sign-configs.rst +++ b/doc/usage/fit/sign-configs.rst @@ -22,7 +22,7 @@ Signed configurations entry = <0x8>; kernel-version = <1>; hash-1 { - algo = "sha1"; + algo = "sha256"; }; }; fdt-1 { @@ -33,7 +33,7 @@ Signed configurations compression = "none"; fdt-version = <1>; hash-1 { - algo = "sha1"; + algo = "sha256"; }; }; }; @@ -43,7 +43,7 @@ Signed configurations kernel = "kernel"; fdt = "fdt-1"; signature { - algo = "sha1,rsa2048"; + algo = "sha256,rsa2048"; key-name-hint = "dev"; sign-images = "fdt", "kernel"; }; diff --git a/doc/usage/fit/sign-images.rst b/doc/usage/fit/sign-images.rst index 7d54d702c97..ca7d10fab83 100644 --- a/doc/usage/fit/sign-images.rst +++ b/doc/usage/fit/sign-images.rst @@ -22,7 +22,7 @@ Signed Images entry = <0x8>; kernel-version = <1>; signature { - algo = "sha1,rsa2048"; + algo = "sha256,rsa2048"; key-name-hint = "dev"; }; }; @@ -34,7 +34,7 @@ Signed Images compression = "none"; fdt-version = <1>; signature { - algo = "sha1,rsa2048"; + algo = "sha256,rsa2048"; key-name-hint = "dev"; }; }; diff --git a/doc/usage/fit/signature.rst b/doc/usage/fit/signature.rst index 0804bffd1ed..fe59f7839c3 100644 --- a/doc/usage/fit/signature.rst +++ b/doc/usage/fit/signature.rst @@ -93,7 +93,7 @@ Public keys should be stored as sub-nodes in a /signature node. Required properties are:

algo - Algorithm name (e.g. "sha1,rsa2048" or "sha256,ecdsa256") + Algorithm name (e.g. "sha256,rsa2048" or "sha512,ecdsa256")

Optional properties are:

@@ -219,28 +219,28 @@ As an example, consider this FIT:: kernel-1 { data = <data for kernel1> signature-1 { - algo = "sha1,rsa2048"; + algo = "sha256,rsa2048"; value = <...kernel signature 1...> }; }; kernel-2 { data = <data for kernel2> signature-1 { - algo = "sha1,rsa2048"; + algo = "sha256,rsa2048"; value = <...kernel signature 2...> }; }; fdt-1 { data = <data for fdt1>; signature-1 { - algo = "sha1,rsa2048"; + algo = "sha256,rsa2048"; value = <...fdt signature 1...> }; }; fdt-2 { data = <data for fdt2>; signature-1 { - algo = "sha1,rsa2048"; + algo = "sha256,rsa2048"; value = <...fdt signature 2...> }; }; @@ -291,28 +291,28 @@ So the above example is adjusted to look like this:: kernel-1 { data = <data for kernel1> hash-1 { - algo = "sha1"; + algo = "sha256"; value = <...kernel hash 1...> }; }; kernel-2 { data = <data for kernel2> hash-1 { - algo = "sha1"; + algo = "sha256"; value = <...kernel hash 2...> }; }; fdt-1 { data = <data for fdt1>; hash-1 { - algo = "sha1"; + algo = "sha256"; value = <...fdt hash 1...> }; }; fdt-2 { data = <data for fdt2>; hash-1 { - algo = "sha1"; + algo = "sha256"; value = <...fdt hash 2...> }; }; @@ -323,7 +323,7 @@ So the above example is adjusted to look like this:: kernel = "kernel-1"; fdt = "fdt-1"; signature-1 { - algo = "sha1,rsa2048"; + algo = "sha256,rsa2048"; value = <...conf 1 signature...>; }; }; @@ -331,7 +331,7 @@ So the above example is adjusted to look like this:: kernel = "kernel-2"; fdt = "fdt-2"; signature-1 { - algo = "sha1,rsa2048"; + algo = "sha256,rsa2048"; value = <...conf 1 signature...>; }; }; @@ -419,6 +419,12 @@ be enabled: CONFIG_FIT_SIGNATURE enable signing and verification in FITs

+CONFIG_SHA256 + enable SHA-256 algorithm for hashing + +CONFIG_SHA512 + enable SHA-512 algorithm for hashing + CONFIG_RSA enable RSA algorithm for signing

diff --git a/doc/usage/fit/update3.rst b/doc/usage/fit/update3.rst index 4ff3950c01e..24235801470 100644 --- a/doc/usage/fit/update3.rst +++ b/doc/usage/fit/update3.rst @@ -19,7 +19,7 @@ Automatic software update: multiple files type = "firmware"; load = <FF700000>; hash-1 { - algo = "sha1"; + algo = "sha256"; }; }; update-2 { @@ -29,7 +29,7 @@ Automatic software update: multiple files type = "firmware"; load = <FF8E0000>; hash-1 { - algo = "sha1"; + algo = "sha256"; }; };

@@ -40,7 +40,7 @@ Automatic software update: multiple files type = "firmware"; load = <FFAC0000>; hash-1 { - algo = "sha1"; + algo = "sha256"; }; }; }; diff --git a/doc/usage/fit/update_uboot.rst b/doc/usage/fit/update_uboot.rst index a9288ee6367..811d008d13d 100644 --- a/doc/usage/fit/update_uboot.rst +++ b/doc/usage/fit/update_uboot.rst @@ -21,7 +21,7 @@ Make sure the flashing addresses ('load' prop) is correct for your board! type = "firmware"; load = <0xFFFC0000>; hash-1 { - algo = "sha1"; + algo = "sha256"; }; }; }; diff --git a/doc/usage/fit/x86-fit-boot.rst b/doc/usage/fit/x86-fit-boot.rst index 93b73bb9019..9e3e32204d5 100644 --- a/doc/usage/fit/x86-fit-boot.rst +++ b/doc/usage/fit/x86-fit-boot.rst @@ -207,16 +207,16 @@ You can take a look at the resulting fit file if you like:: OS: Linux Load Address: 0x01000000 Entry Point: 0x00000000 - Hash algo: sha1 - Hash value: 446b5163ebfe0fb6ee20cbb7a8501b263cd92392 + Hash algo: sha256 + Hash value: 4bbf49981ade163ed089f8525236fedfe44508e9b02a21a48294a96a1518107b Image 1 (setup) Description: Linux setup.bin Created: Tue Oct 7 10:57:24 2014 Type: x86 setup.bin Compression: uncompressed Data Size: 12912 Bytes = 12.61 kB = 0.01 MB - Hash algo: sha1 - Hash value: a1f2099cf47ff9816236cd534c77af86e713faad + Hash algo: sha256 + Hash value: 6aa50c2e0392cb119cdf0971dce8339f100608ed3757c8200b0e39e889e432d2 Default Configuration: 'config-1' Configuration 0 (config-1) Description: Boot Linux kernel