This patch adds a function fit_image_read_key_iv_data that checks the
return value of snprintf and allows to generate a sensible error
message when generating binary images using filenames that are too
long for the OS to handle.
This is especially relevant for automated builds such as Buildroot and
Yocto builds.
Signed-off-by: Hugo Cornelis <hugo.cornelis@essensium.com>
Commit cb9faa6f98 ("tools: Use a single target-independent config to
enable OpenSSL") introduced a target-independent configuration to build
crypto features in host tools.
But since commit 2c21256b27 ("hash: Use Kconfig to enable hashing in
host tools and SPL") the build without OpenSSL is broken, due to FIT
signature/encryption features. Add missing conditional compilation
tokens to fix this.
Signed-off-by: Paul-Erwan Rio <paulerwan.rio@gmail.com>
Tested-by: Alexander Dahl <ada@thorsis.com>
Cc: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
The make by default cuts off the stdout output from external tools,
so all error messages from the image-host are not shown in a make
output. Besides that, it is a common approach to use stderr stream
for error messages.
Use stderr for all error messages in image-host.
Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@foundries.io>
Reviewed-by: Simon Glass <sjg@chromium.org>
Add messages to make it clearer which part of the FIT creation is failing.
This can happen when an invalid 'algo' property is provided in the .its
file.
Signed-off-by: Simon Glass <sjg@chromium.org>
Just like we exclude data-size, data-position, and data-offset from
fit_config_check_sig, we must exclude them while signing as well.
While we're at it, use the FIT_DATA_* defines for fit_config_check_sig
as welll.
Fixes: 8edecd3110 ("fit: Fix verification of images with external data")
Fixes: c522949a29 ("rsa: sig: fix config signature check for fit with padding")
Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Putting these definitions in a header will allow signatures to be
validated independently of bootm.
Signed-off-by: Steven Lawrance <steven.lawrance@softathome.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit enhances mkimage to update the node
/image/pre-load/sig with the public key.
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
At present mkimage displays the node information but it is not clear what
signing action was taken. Add a message that shows it. For now it only
supports showing a single signing action, since that is the common case.
Sample:
Signature written to 'sha1-basic/test.fit',
node '/configurations/conf-1/signature'
Public key written to 'sha1-basic/sandbox-u-boot.dtb',
node '/signature/key-dev'
Signed-off-by: Simon Glass <sjg@chromium.org>
Update the two functions that call add_verify_data() so that the caller
can see the node that was written to.
Signed-off-by: Simon Glass <sjg@chromium.org>
This permits to prepare FIT image description that do not hard-code the
final choice of the signature algorithm, possibly requiring the user to
patch the sources.
When -o <algo> is specified, this information is used in favor of the
'algo' property in the signature node. Furthermore, that property is set
accordingly when writing the image.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
This value is either 0 for success or -1 for error. Coverity reports that
"ret" is passed to a parameter that cannot be negative, pointing to the
condition 'if (ret < 0)'.
Adjust it to just check for non-zero and avoid showing -1 in the error
message, which is pointless. Perhaps these changes will molify Coverity.
Reported-by: Coverity (CID: 312956)
Signed-off-by: Simon Glass <sjg@chromium.org>
The return value '-ENOSPC' of fit_set_timestamp function does not match
the caller fit_image_write_sig's expection which is '-FDT_ERR_NOSPACE'.
Fix it by not calling fit_set_timestamp, but call fdt_setprop instead.
This fixes a following mkimage error:
| Can't write signature for 'signature@1' signature node in
| 'conf@imx6ull-colibri-wifi-eval-v3.dtb' conf node: <unknown error>
| mkimage Can't add hashes to FIT blob: -1
Signed-off-by: Ming Liu <liu.ming50@gmail.com>
Tested-by: Igor Opaniuk <igor.opaniuk@foundries.io>
It's not always desirable to use 'keydir' and some ad-hoc heuristics
to get the filename of the signing key. More often, just passing the
filename is the simpler, easier, and logical thing to do.
Since mkimage doesn't use long options, we're slowly running out of
letters. I've chosen '-G' because it was available.
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
The propoerty sign-images points to images in the configuration
node. But thoses images may references severals "sub-images" (for
example for images loadable). This commit adds the support of
severals sub-images.
Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
This commit creates a function fit_config_add_hash that will be
used in the next commit to support several 'sub-images'.
Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
In the function get_random_data, strerrno is called with
the variable ret (which is the return of the function
clock_gettime). It should be called with errnor. This
commit fixes this mistake.
Reported-by: Coverity (CID: 312956)
Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
According to the manpage of rand, it is recommended
to use random instead of rand. This commit updates
the function get_random_data to use random.
Reported-by: Coverity (CID: 312953)
Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
When building on a 32bit host the following warning occurs:
tools/image-host.c: In function ‘fit_image_read_data’:
tools/image-host.c:296:56: warning: format ‘%ld’ expects argument of
type ‘long int’, but argument 3 has type ‘__off64_t’
{aka ‘long long int’} [-Wformat=]
printf("File %s don't have the expected size (size=%ld, expected=%d)\n",
~~^
%lld
filename, sbuf.st_size, expected_size);
~~~~~~~~~~~~
tools/image-host.c:311:62: warning: format ‘%ld’ expects argument of
type ‘long int’, but argument 4 has type ‘__off64_t’
{aka ‘long long int’} [-Wformat=]
printf("Can't read all file %s (read %zd bytes, expexted %ld)\n",
~~^
%lld
filename, n, sbuf.st_size);
~~~~~~~~~~~~
Fix the format strings.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Binaries may be encrypted in a FIT image with AES. This
algo needs a key and an IV (Initialization Vector). The
IV is provided in a file (pointer by iv-name-hint in the
ITS file) when building the ITB file.
This commits adds provide an alternative way to manage
the IV. If the property iv-name-hint is not provided in
the ITS file, the tool mkimage will generate an random
IV and store it in the FIT image.
Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
This patch addresses issue #2 for signed configurations.
-----8<-----
Including the image cipher properties in the configuration signature
prevents an attacker from modifying cipher, key or iv properties.
Signed-off-by: Patrick Oppenlander <patrick.oppenlander@gmail.com>
Reviewed-by: Philippe Reynes <philippe.reynes@softathome.com>
Previously, mkimage -F could be run multiple times causing already
ciphered image data to be ciphered again.
Signed-off-by: Patrick Oppenlander <patrick.oppenlander@gmail.com>
Reviewed-by: Philippe Reynes <philippe.reynes@softathome.com>
Also replace fdt_delprop/fdt_setprop with fdt_setprop as fdt_setprop can
replace an existing property value.
Signed-off-by: Patrick Oppenlander <patrick.oppenlander@gmail.com>
Reviewed-by: Philippe Reynes <philippe.reynes@softathome.com>
Previously mkimage would process any node matching the regex cipher.*
and apply the ciphers to the image data in the order they appeared in
the FDT. This meant that data could be inadvertently ciphered multiple
times.
Switch to processing a single cipher node which exactly matches
FIT_CIPHER_NODENAME.
Signed-off-by: Patrick Oppenlander <patrick.oppenlander@gmail.com>
Reviewed-by: Philippe Reynes <philippe.reynes@softathome.com>
fdt_region APIs are not part of libfdt. They are U-Boot extension
for the verified boot. Split the declarations related to fdt_region
out of <fdt_region.h>. This allows <linux/libfdt.h> to become a
simple wrapper file, like Linux does.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
When building on a 32bit host the following warning occurs:
tools/image-host.c: In function ‘fit_image_read_data’:
tools/image-host.c:310:42: warning: format ‘%ld’ expects argument of type
‘long int’, but argument 3 has type ‘ssize_t’ {aka ‘int’} [-Wformat=]
printf("Can't read all file %s (read %ld bytes, expexted %ld)\n",
~~^
%d
filename, n, sbuf.st_size);
~
n is of type ssize_t so we should use %zd for printing.
Fixes: 7298e42250 ("mkimage: fit: add support to encrypt image with aes")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
These are used in multiple places so update them to use a shared #define.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Philippe Reynes <philippe.reynes@softathome.com>
This tool always verifies the default configuration. It is useful to be
able to verify a specific one. Add a command-line flag for this and plumb
the logic through.
Signed-off-by: Simon Glass <sjg@chromium.org>
It is useful to be a little more specific about what is being checked.
Update a few messages to help with this.
Signed-off-by: Simon Glass <sjg@chromium.org>
The include uboot_aes.h is not useful and
it breaks the compilation on android, so
we remove it.
Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
Reported-by: Praneeth Bajjuri <praneeth@ti.com>
This commit add the support of encrypting image with aes
in mkimage. To enable the ciphering, a node cipher with
a reference to a key and IV (Initialization Vector) must
be added to the its file. Then mkimage add the encrypted
image to the FIT and add the key and IV to the u-boot
device tree.
Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
The rsa signature use a padding algorithm. By default, we use the
padding pkcs-1.5. In order to add some new padding algorithm, we
add a padding framework to manage several padding algorithm.
The choice of the padding is done in the file .its.
Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
When generating timestamps in signatures, use imagetool_get_source_date()
so we can be overridden by SOURCE_DATE_EPOCH to generate reproducible
images.
Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
Reviewed-by: Simon Glass <sjg@chromum.org>
The hashed-strings signature property includes two uint32_t values.
The first is unneeded as there should never be a start offset into the
strings region. The second, the size, is needed because the added
signature node appends to this region.
See tools/image-host.c, where a static 0 value is used for the offset.
Signed-off-by: Teddy Reed <teddy.reed@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from. So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry. Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.
In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.
This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents. There's also a few places where I found we did not have a tag
and have introduced one.
Signed-off-by: Tom Rini <trini@konsulko.com>
The DT spec demands a unit-address in a node name to match the "reg"
property in that node. Newer dtc versions will throw warnings if this is
not the case.
Fix all occurences in the tree where node names were mentioned in
comments, to not give bad examples to the reader.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
This function is called when signing configuration nodes. Adjust
the error message.
I do not know why we do not need to show the error message in case of
ENOSPC. Remove the if-conditional that seems unnecessary.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
If -K option is missing when you sign image nodes, it fails with
an unclear error message:
tools/mkimage Can't add hashes to FIT blob: -1
It is hard to figure out the cause of the failure.
In contrast, when you sign configuration nodes, -K is optional because
fit_config_process_sig() returns successfully if keydest is unset.
Probably this is a preferred behavior when you want to update FIT with
the same key; you do not have to update the public key in this case.
So, this commit changes fit_image_process_sig() to continue signing
without keydest. If ->add_verify_data() fails, show a clearer error
message, which has been borrowed from fit_config_process_sig().
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
The "algo_name" points to a property in a blob being edited. The
pointer becomes stale when fit_image_write_sig() inserts signatures.
Then crypto->add_verify_data() writes wrong data to the public key
destination.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Both "conf_name" and "sig_name" point to the name of config node.
The latter should be the name of the signature node.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Add support for signing with the pkcs11 engine. This allows FIT images
to be signed with keys securely stored on a smartcard, hardware security
module, etc without exposing the keys.
Support for other engines can be added in the future by modifying
rsa_engine_get_pub_key() and rsa_engine_get_priv_key() to construct
correct key_id strings.
Signed-off-by: George McCollister <george.mccollister@gmail.com>
Remove the need to explicitly add SHA/RSA pairings. Invalid SHA/RSA
pairings will still fail on verify operations when the hash length is
longer than the key length.
Follow the same naming scheme "checksum,crytpo" without explicitly
defining the string.
Indirectly adds support for "sha1,rsa4096" signing/verification.
Signed-off-by: Andrew Duda <aduda@meraki.com>
Signed-off-by: aduda <aduda@meraki.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Cut down on the repetition of algorithm information by defining separate
checksum and crypto structs. image_sig_algos are now simply pairs of
unique checksum and crypto algos.
Signed-off-by: Andrew Duda <aduda@meraki.com>
Signed-off-by: aduda <aduda@meraki.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
[NOTE: I took v1 of these patches in, and then v2 came out, this commit
is squashing the minor deltas from v1 -> v2 of updates to c236ebd and
2b9ec76 into this commit - trini]
- Added an additional NULL check, as suggested by Simon Glass to
fit_image_process_sig
- Re-formatted the comment blocks
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Reviewed-by: Simon Glass <sjg@chromium.org>
[For merging the chnages from v2 back onto v1]
Signed-off-by: Tom Rini <trini@konsulko.com>
