This patch converts authencesn to use the new skcipher interface as
opposed to ablkcipher.
It also fixes a little bug where if a sync version of authencesn
is requested we may still end up using an async ahash. This should
have no effect as none of the authencesn users can request for a
sync authencesn.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This patch converts authenc to use the new skcipher interface as
opposed to ablkcipher.
It also fixes a little bug where if a sync version of authenc
is requested we may still end up using an async ahash. This should
have no effect as none of the authenc users can request for a
sync authenc.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This patch adds a chunk size parameter to aead algorithms, just
like the chunk size for skcipher algorithms.
However, unlike skcipher we do not currently export this to AEAD
users. It is only meant to be used by AEAD implementors for now.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Current the default null skcipher is actually a crypto_blkcipher.
This patch creates a synchronous crypto_skcipher version of the
null cipher which unfortunately has to settle for the name skcipher2.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This patch allows skcipher algorithms and instances to be created
and registered with the crypto API. They are accessible through
the top-level skcipher interface, along with ablkcipher/blkcipher
algorithms and instances.
This patch also introduces a new parameter called chunk size
which is meant for ciphers such as CTR and CTS which ostensibly
can handle arbitrary lengths, but still behave like block ciphers
in that you can only process a partial block at the very end.
For these ciphers the block size will continue to be set to 1
as it is now while the chunk size will be set to the underlying
block size.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Arbitrary X.509 certificates without authority key identifiers (AKIs)
can be added to "trusted" keyrings, including IMA or EVM certs loaded
from the filesystem. Signature verification is currently bypassed for
certs without AKIs.
Trusted keys were recently refactored, and this bug is not present in
4.6.
restrict_link_by_signature should return -ENOKEY (no matching parent
certificate found) if the certificate being evaluated has no AKIs,
instead of bypassing signature checks and returning 0 (new certificate
accepted).
Reported-by: Petko Manolov <petkan@mip-labs.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
When parsing a private key, store all non-optional fields. These
are required for enabling CRT mode for decrypt and verify
Signed-off-by: Salvatore Benedetto <salvatore.benedetto@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Use the vector polynomial multiply-sum instructions in POWER8 to
speed up crc32c.
This is just over 41x faster than the slice-by-8 method that it
replaces. Measurements on a 4.1 GHz POWER8 show it sustaining
52 GiB/sec.
A simple btrfs write performance test:
dd if=/dev/zero of=/mnt/tmpfile bs=1M count=4096
sync
is over 3.7x faster.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
As the software RSA implementation now produces fixed-length
output, we need to eliminate leading zeros in the calling code
instead.
This patch does just that for pkcs1pad signature verification.
Fixes: 9b45b7bba3 ("crypto: rsa - Generate fixed-length output")
Reported-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
The multibuffer hash speed test is incorrectly bailing because
of an EINPROGRESS return value. This patch fixes it by setting
ret to zero if it is equal to -EINPROGRESS.
Reported-by: Megha Dey <megha.dey@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
In the vast majority of cases (2^-32 on 32-bit and 2^-64 on 64-bit)
cases, the result from encryption/signing will require no padding.
This patch makes these two operations write their output directly
to the final destination. Only in the exceedingly rare cases where
fixup is needed to we copy it out and back to add the leading zeroes.
This patch also makes use of the crypto_akcipher_set_crypt API
instead of writing the akcipher request directly.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Rather than repeatedly checking the key size on each operation,
we should be checking it once when the key is set.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
We don't currently support using akcipher in atomic contexts,
so GFP_KERNEL should always be used.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
The helper pkcs1pad_sg_set_buf tries to split a buffer that crosses
a page boundary into two SG entries. This is unnecessary. This
patch removes that.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
The only user of rsa-pkcs1pad always uses the hash so there is
no reason to support the case of not having a hash.
This patch also changes the digest info lookup so that it is
only done once during template instantiation rather than on each
operation.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Every implementation of RSA that we have naturally generates
output with leading zeroes. The one and only user of RSA,
pkcs1pad wants to have those leading zeroes in place, in fact
because they are currently absent it has to write those zeroes
itself.
So we shouldn't be stripping leading zeroes in the first place.
In fact this patch makes rsa-generic produce output with fixed
length so that pkcs1pad does not need to do any extra work.
This patch also changes DH to use the new interface.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This patch allows RSA implementations to produce output with
leading zeroes. testmgr will skip leading zeroes when comparing
the output.
This patch also tries to make the RSA test function generic enough
to potentially handle other akcipher algorithms.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Herbert Xu
Mat Martineau
Lans Zhang
Salvatore Benedetto
Anton Blanchard
Theodore Ts'o
raveendra padasalagi