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The xcbc template is setting its alignmask to that of its underlying
'cipher'. Yet, it doesn't care itself about how its inputs and outputs
are aligned, which is ostensibly the point of the alignmask. Instead,
xcbc actually just uses its alignmask itself to runtime-align certain
fields in its tfm and desc contexts appropriately for its underlying
cipher. That is almost entirely pointless too, though, since xcbc is
already using the cipher API functions that handle alignment themselves,
and few ciphers set a nonzero alignmask anyway. Also, even without
runtime alignment, an alignment of at least 4 bytes can be guaranteed.
Thus, at best this code is optimizing for the rare case of ciphers that
set an alignmask >= 7, at the cost of hurting the common cases.
Therefore, this patch removes the manual alignment code from xcbc and
makes it stop setting an alignmask.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The vmac template is setting its alignmask to that of its underlying
'cipher'. This doesn't actually accomplish anything useful, though, so
stop doing it. (vmac_update() does have an alignment bug, where it
assumes u64 alignment when it shouldn't, but that bug exists both before
and after this patch.) This is a prerequisite for removing support for
nonzero alignmasks from shash.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The hmac template is setting its alignmask to that of its underlying
unkeyed hash algorithm, and it is aligning the ipad and opad fields in
its tfm context to that alignment. However, hmac does not actually need
any sort of alignment itself, which makes this pointless except to keep
the pads aligned to what the underlying algorithm prefers. But very few
shash algorithms actually set an alignmask, and it is being removed from
those remaining ones; also, after setkey, the pads are only passed to
crypto_shash_import and crypto_shash_export which ignore the alignmask.
Therefore, make the hmac template stop setting an alignmask and simply
use natural alignment for ipad and opad. Note, this change also moves
the pads from the beginning of the tfm context to the end, which makes
much more sense; the variable-length fields should be at the end.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The cmac template is setting its alignmask to that of its underlying
'cipher'. Yet, it doesn't care itself about how its inputs and outputs
are aligned, which is ostensibly the point of the alignmask. Instead,
cmac actually just uses its alignmask itself to runtime-align certain
fields in its tfm and desc contexts appropriately for its underlying
cipher. That is almost entirely pointless too, though, since cmac is
already using the cipher API functions that handle alignment themselves,
and few ciphers set a nonzero alignmask anyway. Also, even without
runtime alignment, an alignment of at least 4 bytes can be guaranteed.
Thus, at best this code is optimizing for the rare case of ciphers that
set an alignmask >= 7, at the cost of hurting the common cases.
Therefore, this patch removes the manual alignment code from cmac and
makes it stop setting an alignmask.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The cbcmac template is aligning a field in its desc context to the
alignmask of its underlying 'cipher', at runtime. This is almost
entirely pointless, since cbcmac is already using the cipher API
functions that handle alignment themselves, and few ciphers set a
nonzero alignmask anyway. Also, even without runtime alignment, an
alignment of at least 4 bytes can be guaranteed.
Thus, at best this code is optimizing for the rare case of ciphers that
set an alignmask >= 7, at the cost of hurting the common cases.
Therefore, remove the manual alignment code from cbcmac.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Most shash algorithms don't have custom ->import and ->export functions,
resulting in the memcpy() based default being used. Yet,
crypto_shash_import() and crypto_shash_export() still make an indirect
call, which is expensive. Therefore, change how the default import and
export are called to make it so that crypto_shash_import() and
crypto_shash_export() don't do an indirect call in this case.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Add a module alias for pkcs1pas so that it can be auto-loaded by
modprobe.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The modular build fails because the self-test code depends on pkcs7
which in turn depends on x509 which contains the self-test.
Split the self-test out into its own module to break the cycle.
Fixes: 3cde3174eb91 ("certs: Add FIPS selftests")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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When an algorithm of the new "lskcipher" type is exposed through the
"skcipher" API, calls to crypto_skcipher_setkey() don't pass on the
CRYPTO_TFM_REQ_FORBID_WEAK_KEYS flag to the lskcipher. This causes
self-test failures for ecb(des), as weak keys are not rejected anymore.
Fix this.
Fixes: 31865c4c4db2 ("crypto: skcipher - Add lskcipher")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Set the error value to -EINVAL instead of zero when the underlying
name (within "ecb()") fails basic sanity checks.
Fixes: 8aee5d4ebd11 ("crypto: lskcipher - Add compatibility wrapper around ECB")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/r/202310111323.ZjK7bzjw-lkp@intel.com/
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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It is possible to stand up own certificates and sign PE-COFF binaries
using SHA-224. However it never became popular or needed since it has
similar costs as SHA-256. Windows Authenticode infrastructure never
had support for SHA-224, and all secureboot keys used fro linux
vmlinuz have always been using at least SHA-256.
Given the point of mscode_parser is to support interoperatiblity with
typical de-facto hashes, remove support for SHA-224 to avoid
posibility of creating interoperatibility issues with rhboot/shim,
grub, and non-linux systems trying to sign or verify vmlinux.
SHA-224 itself is not removed from the kernel, as it is truncated
SHA-256. If requested I can write patches to remove SHA-224 support
across all of the drivers.
Signed-off-by: Dimitri John Ledkov <dimitri.ledkov@canonical.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Removes support for sha1 signed kernel modules, importing sha1 signed
x.509 certificates.
rsa-pkcs1pad keeps sha1 padding support, which seems to be used by
virtio driver.
sha1 remains available as there are many drivers and subsystems using
it. Note only hmac(sha1) with secret keys remains cryptographically
secure.
In the kernel there are filesystems, IMA, tpm/pcr that appear to be
using sha1. Maybe they can all start to be slowly upgraded to
something else i.e. blake3, ParallelHash, SHAKE256 as needed.
Signed-off-by: Dimitri John Ledkov <dimitri.ledkov@canonical.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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When the source scatterlist is a single page, optimize the first hash
step of adiantum to use crypto_shash_digest() instead of
init/update/final, and use the same local kmap for both hashing the bulk
part and loading the narrow part of the source data.
Likewise, when the destination scatterlist is a single page, optimize
the second hash step of adiantum to use crypto_shash_digest() instead of
init/update/final, and use the same local kmap for both hashing the bulk
part and storing the narrow part of the destination data.
In some cases these optimizations improve performance significantly.
Note: ideally, for optimal performance each architecture should
implement the full "adiantum(xchacha12,aes)" algorithm and fully
optimize the contiguous buffer case to use no indirect calls. That's
not something I've gotten around to doing, though. This commit just
makes a relatively small change that provides some benefit with the
existing template-based approach.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Fold shash_digest_unaligned() into its only remaining caller. Also,
avoid a redundant check of CRYPTO_TFM_NEED_KEY by replacing the call to
crypto_shash_init() with shash->init(desc). Finally, replace
shash_update_unaligned() + shash_final_unaligned() with
shash_finup_unaligned() which does exactly that.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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For an shash algorithm that doesn't implement ->digest, currently
crypto_shash_digest() with aligned input makes 5 indirect calls: 1 to
shash_digest_unaligned(), 1 to ->init, 2 to ->update ('alignmask + 1'
bytes, then the rest), then 1 to ->final. This is true even if the
algorithm implements ->finup. This is caused by an unnecessary fallback
to code meant to handle unaligned inputs. In fact,
crypto_shash_digest() already does the needed alignment check earlier.
Therefore, optimize the number of indirect calls for aligned inputs to 3
when the algorithm implements ->finup. It remains at 5 when the
algorithm implements neither ->finup nor ->digest.
Similarly, for an shash algorithm that doesn't implement ->finup,
currently crypto_shash_finup() with aligned input makes 4 indirect
calls: 1 to shash_finup_unaligned(), 2 to ->update, and
1 to ->final. Optimize this to 3 calls.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Since commit adad556efcdd ("crypto: api - Fix built-in testing
dependency failures"), the following warning appears when booting an
x86_64 kernel that is configured with
CONFIG_CRYPTO_MANAGER_EXTRA_TESTS=y and CONFIG_CRYPTO_AES_NI_INTEL=y,
even when CONFIG_CRYPTO_XTS=y and CONFIG_CRYPTO_AES=y:
alg: skcipher: skipping comparison tests for xts-aes-aesni because xts(ecb(aes-generic)) is unavailable
This is caused by an issue in the xts template where it allocates an
"aes" single-block cipher without declaring a dependency on it via the
crypto_spawn mechanism. This issue was exposed by the above commit
because it reversed the order that the algorithms are tested in.
Specifically, when "xts(ecb(aes-generic))" is instantiated and tested
during the comparison tests for "xts-aes-aesni", the "xts" template
allocates an "aes" crypto_cipher for encrypting tweaks. This resolves
to "aes-aesni". (Getting "aes-aesni" instead of "aes-generic" here is a
bit weird, but it's apparently intended.) Due to the above-mentioned
commit, the testing of "aes-aesni", and the finalization of its
registration, now happens at this point instead of before. At the end
of that, crypto_remove_spawns() unregisters all algorithm instances that
depend on a lower-priority "aes" implementation such as "aes-generic"
but that do not depend on "aes-aesni". However, because "xts" does not
use the crypto_spawn mechanism for its "aes", its dependency on
"aes-aesni" is not recognized by crypto_remove_spawns(). Thus,
crypto_remove_spawns() unexpectedly unregisters "xts(ecb(aes-generic))".
Fix this issue by making the "xts" template use the crypto_spawn
mechanism for its "aes" dependency, like what other templates do.
Note, this fix could be applied as far back as commit f1c131b45410
("crypto: xts - Convert to skcipher"). However, the issue only got
exposed by the much more recent changes to how the crypto API runs the
self-tests, so there should be no need to backport this to very old
kernels. Also, an alternative fix would be to flip the list iteration
order in crypto_start_tests() to restore the original testing order.
I'm thinking we should do that too, since the original order seems more
natural, but it shouldn't be relied on for correctness.
Fixes: adad556efcdd ("crypto: api - Fix built-in testing dependency failures")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The new sign/verify code broke the case of pkcs1pad without a
hash algorithm. Fix it by setting issig correctly for this case.
Fixes: 63ba4d67594a ("KEYS: asymmetric: Use new crypto interface without scatterlists")
Cc: stable@vger.kernel.org # v6.5
Reported-by: Denis Kenzior <denkenz@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Tested-by: Denis Kenzior <denkenz@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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In case a health test error occurs during runtime, the power-up health
tests are rerun to verify that the noise source is still good and
that the reported health test error was an outlier. For performing this
power-up health test, the already existing entropy collector instance
is used instead of allocating a new one. This change has the following
implications:
* The noise that is collected as part of the newly run health tests is
inserted into the entropy collector and thus stirs the existing
data present in there further. Thus, the entropy collected during
the health test is not wasted. This is also allowed by SP800-90B.
* The power-on health test is not affected by the state of the entropy
collector, because it resets the APT / RCT state. The remainder of
the state is unrelated to the health test as it is only applied to
newly obtained time stamps.
This change also fixes a bug report about an allocation while in an
atomic lock (the lock is taken in jent_kcapi_random, jent_read_entropy
is called and this can call jent_entropy_init).
Fixes: 04597c8dd6c4 ("jitter - add RCT/APT support for different OSRs")
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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As skcipher spawns may be of the type lskcipher, only the common
fields may be accessed. This was already the case but use the
correct helpers to make this more obvious.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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As skcipher spawns may be of the type lskcipher, only the common
fields may be accessed. This was already the case but use the
correct helpers to make this more obvious.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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As skcipher spawns may be of the type lskcipher, only the common
fields may be accessed. This was already the case but use the
correct helpers to make this more obvious.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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As skcipher spawns may be of the type lskcipher, only the common
fields may be accessed. This was already the case but use the
correct helpers to make this more obvious.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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As skcipher spawns may be of the type lskcipher, only the common
fields may be accessed. This was already the case but use the
correct helpers to make this more obvious.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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As skcipher spawns may be of the type lskcipher, only the common
fields may be accessed. This was already the case but use the
correct helpers to make this more obvious.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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As skcipher spawns may be of the type lskcipher, only the common
fields may be accessed. This was already the case but use the
correct helpers to make this more obvious.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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As skcipher spawns may be of the type lskcipher, only the common
fields may be accessed. This was already the case but use the
correct helpers to make this more obvious.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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As skcipher spawns may be of the type lskcipher, only the common
fields may be accessed. This was already the case but use the
correct helpers to make this more obvious.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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As skcipher spawns may be of the type lskcipher, only the common
fields may be accessed. This was already the case but use the
correct helpers to make this more obvious.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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As skcipher spawns may be of the type lskcipher, only the common
fields may be accessed. This was already the case but use the
correct helpers to make this more obvious.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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As skcipher spawns may be of the type lskcipher, only the common
fields may be accessed. This was already the case but use the
correct helpers to make this more obvious.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Add code to handle an underlying lskcihper object when grabbing
an skcipher spawn.
Fixes: 31865c4c4db2 ("crypto: skcipher - Add lskcipher")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Replace skcipher implementation with lskcipher.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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As lskcipher requires the ecb wrapper for the transition add an
explicit dependency on it so that it is always present. This can
be removed once all simple ciphers have been converted to lskcipher.
Reported-by: Nathan Chancellor <nathan@kernel.org>
Fixes: 705b52fef3c7 ("crypto: cbc - Convert from skcipher to lskcipher")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Remove zlib-deflate test vectors as it no longer exists in the kernel.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
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Remove the implementation of zlib-deflate because it is completely
unused in the kernel.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
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Remove support for md4 md5 hash and signatures in x.509 certificate
parsers, pkcs7 signature parser, authenticode parser.
All of these are insecure or broken, and everyone has long time ago
migrated to alternative hash implementations.
Also remove md2 & md3 oids which have already didn't have support.
This is also likely the last user of md4 in the kernel, and thus
crypto/md4.c and related tests in tcrypt & testmgr can likely be
removed. Other users such as cifs smbfs ext modpost sumversions have
their own internal implementation as needed.
Signed-off-by: Dimitri John Ledkov <dimitri.ledkov@canonical.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The ASN.1 module in RFC 5280 appendix A.1 uses EXPLICIT TAGS whereas the
one in appendix A.2 uses IMPLICIT TAGS.
The kernel's simplified asn1_compiler.c always uses EXPLICIT TAGS, hence
definitions from appendix A.2 need to be annotated as IMPLICIT for the
compiler to generate RFC-compliant code.
In particular, GeneralName is defined in appendix A.2:
GeneralName ::= CHOICE {
otherName [0] OtherName,
...
dNSName [2] IA5String,
x400Address [3] ORAddress,
directoryName [4] Name,
...
}
Because appendix A.2 uses IMPLICIT TAGS, the IA5String tag (0x16) of a
dNSName is not rendered. Instead, the string directly succeeds the
[2] tag (0x82).
Likewise, the SEQUENCE tag (0x30) of an OtherName is not rendered.
Instead, only the constituents of the SEQUENCE are rendered: An OID tag
(0x06), a [0] tag (0xa0) and an ANY tag. That's three consecutive tags
instead of a single encompassing tag.
The situation is different for x400Address and directoryName choices:
They reference ORAddress and Name, which are defined in appendix A.1,
therefore use EXPLICIT TAGS.
The AKID ASN.1 module is missing several IMPLICIT annotations, hence
isn't RFC-compliant. In the unlikely event that an AKID contains other
elements beside a directoryName, users may see parse errors.
Add the missing annotations but do not tag this commit for stable as I
am not aware of any issue reports. Fixes are only eligible for stable
if they're "obviously correct" and with ASN.1 there's no such thing.
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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All callers ignore the return value, so simplify by not providing one.
Note that crypto_engine_exit() is typically called in a device driver's
remove path (or the error path in probe), where errors cannot be handled
anyhow.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The oversampling rate used by the Jitter RNG allows the configuration of
the heuristically implied entropy in one timing measurement. This
entropy rate is (1 / OSR) bits of entropy per time stamp.
Considering that the Jitter RNG now support APT/RCT health tests for
different OSRs, allow this value to be configured at compile time to
support systems with limited amount of entropy in their timer.
The allowed range of OSR values complies with the APT/RCT cutoff health
test values which range from 1 through 15.
The default value of the OSR selection support is left at 1 which is the
current default. Thus, the addition of the configuration support does
not alter the default Jitter RNG behavior.
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The memory size consumed by the Jitter RNG is one contributing factor in
the amount of entropy that is gathered. As the amount of entropy
directly correlates with the distance of the memory from the CPU, the
caches that are possibly present on a given system have an impact on the
collected entropy.
Thus, the kernel compile time should offer a means to configure the
amount of memory used by the Jitter RNG. Although this option could be
turned into a runtime option (e.g. a kernel command line option), it
should remain a compile time option as otherwise adminsitrators who may
not have performed an entropy assessment may select a value that is
inappropriate.
The default value selected by the configuration is identical to the
current Jitter RNG value. Thus, the patch should not lead to any change
in the Jitter RNG behavior.
To accommodate larger memory buffers, kvzalloc / kvfree is used.
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The oversampling rate (OSR) value specifies the heuristically implied
entropy in the recorded data - H_submitter = 1/osr. A different entropy
estimate implies a different APT/RCT cutoff value. This change adds
support for OSRs 1 through 15. This OSR can be selected by the caller
of the Jitter RNG.
For this patch, the caller still uses one hard-coded OSR. A subsequent
patch allows this value to be configured.
In addition, the power-up self test is adjusted as follows:
* It allows the caller to provide an oversampling rate that should be
tested with - commonly it should be the same as used for the actual
runtime operation. This makes the power-up testing therefore consistent
with the runtime operation.
* It calls now jent_measure_jitter (i.e. collects the full entropy
that can possibly be harvested by the Jitter RNG) instead of only
jent_condition_data (which only returns the entropy harvested from
the conditioning component). This should now alleviate reports where
the Jitter RNG initialization thinks there is too little entropy.
* The power-up test now solely relies on the (enhanced) APT and RCT
test that is used as a health test at runtime.
The code allowing the different OSRs as well as the power-up test
changes are present in the user space version of the Jitter RNG 3.4.1
and thus was already in production use for some time.
Reported-by "Ospan, Abylay" <aospan@amazon.com>
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Replace the existing skcipher CBC template with an lskcipher version.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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This patch adds two different implementations of ECB. First of
all an lskcipher wrapper around existing ciphers is introduced as
a temporary transition aid.
Secondly a permanent lskcipher template is also added. It's simply
a wrapper around the underlying lskcipher algorithm.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Test lskcipher algorithms using the same logic as cipher algorithms.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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As an aid to the transition from cipher algorithm implementations
to lskcipher, add a temporary wrapper when creating simple lskcipher
templates by using ecb(X) instead of X if an lskcipher implementation
of X cannot be found.
This can be reverted once all cipher implementations have switched
over to lskcipher.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Add a new API type lskcipher designed for taking straight kernel
pointers instead of SG lists. Its relationship to skcipher will
be analogous to that between shash and ahash.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Move the macro CRYPTO_ALG_TYPE_AHASH_MASK out of linux/crypto.h
and into crypto/ahash.c so that it's not visible to users of the
Crypto API.
Also remove the unused CRYPTO_ALG_TYPE_HASH_MASK macro.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Add the helper crypto_has_aead. This is meant to replace the
existing use of crypto_has_alg to locate AEAD algorithms.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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tfm is assigned first, so it does not need to initialize
the assignment.
Signed-off-by: Li zeming <zeming@nfschina.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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In sm2_compute_z_digest() function, the newly allocated structure
mpi_ec_ctx is used, but forget to initialize it, which will cause
a crash when performing subsequent operations.
Fixes: e5221fa6a355 ("KEYS: asymmetric: Move sm2 code into x509_public_key")
Cc: stable@vger.kernel.org # v6.5
Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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