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In crypto_authenc_esn_setkey we save pointers to the authenc keys
in a local variable of type struct crypto_authenc_keys and we don't
zeroize it after use. Fix this and don't leak pointers to the
authenc keys.
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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In crypto_authenc_setkey we save pointers to the authenc keys in
a local variable of type struct crypto_authenc_keys and we don't
zeroize it after use. Fix this and don't leak pointers to the
authenc keys.
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Adds zstd support to crypto and scompress. Only supports the default
level.
Previously we held off on this patch, since there weren't any users.
Now zram is ready for zstd support, but depends on CONFIG_CRYPTO_ZSTD,
which isn't defined until this patch is in. I also see a patch adding
zstd to pstore [0], which depends on crypto zstd.
[0] lkml.kernel.org/r/9c9416b2dff19f05fb4c35879aaa83d11ff72c92.1521626182.git.geliangtang@gmail.com
Signed-off-by: Nick Terrell <terrelln@fb.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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On the quest to remove all VLAs from the kernel[1], this avoids VLAs
by just using the maximum allocation size (4 bytes) for stack arrays.
All the VLAs in ecc were either 3 or 4 bytes (or a multiple), so just
make it 4 bytes all the time. Initialization routines are adjusted to
check that ndigits does not end up larger than the arrays.
This includes a removal of the earlier attempt at this fix from
commit a963834b4742 ("crypto/ecc: Remove stack VLA usage")
[1] https://lkml.org/lkml/2018/3/7/621
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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During freeing of the internal buffers used by the DRBG, set the pointer
to NULL. It is possible that the context with the freed buffers is
reused. In case of an error during initialization where the pointers
do not yet point to allocated memory, the NULL value prevents a double
free.
Cc: stable@vger.kernel.org
Fixes: faba028f3f7b4 ("crypto: drbg - use aligned buffers")
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Reported-by: syzbot+75397ee3df5c70164154@syzkaller.appspotmail.com
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Commit a8e5d48808e1 ("crypto: api - Keep failed instances alive") is
making allocating crypto transforms sometimes fail with ELIBBAD, when
multiple processes try to access encrypted files with fscrypt for the
first time since boot. The problem is that the "request larval" for the
algorithm is being mistaken for an algorithm which failed its tests.
Fix it by only returning ELIBBAD for "non-larval" algorithms. Also
don't leak a reference to the algorithm.
Fixes: a8e5d48808e1 ("crypto: api - Keep failed instances alive")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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syzbot reported :
BUG: KMSAN: uninit-value in alg_bind+0xe3/0xd90 crypto/af_alg.c:162
We need to check addr_len before dereferencing sa (or uaddr)
Fixes: 5bbed7cae7b5 ("crypto: af_alg - whitelist mask and type")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Cc: Stephan Mueller <smueller@chronox.de>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Our convention is to distinguish file types by suffixes with a period
as a separator.
*-asn1.[ch] is a different pattern from other generated sources such
as *.lex.c, *.tab.[ch], *.dtb.S, etc. More confusing, files with
'-asn1.[ch]' are generated files, but '_asn1.[ch]' are checked-in
files:
net/netfilter/nf_conntrack_h323_asn1.c
include/linux/netfilter/nf_conntrack_h323_asn1.h
include/linux/sunrpc/gss_asn1.h
Rename generated files to *.asn1.[ch] for consistency.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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Clean up these patterns from the top Makefile to omit 'clean-files'
in each Makefile.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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These are common patterns where source files are parsed by the
asn1_compiler.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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When we have an unaligned SG list entry where there is no leftover
aligned data, the hash walk code will incorrectly return zero as if
the entire SG list has been processed.
This patch fixes it by moving onto the next page instead.
Reported-by: Eli Cooper <elicooper@gmx.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The buffer rctx->ext contains potentially sensitive data and should
be freed with kzfree.
Cc: <stable@vger.kernel.org>
Fixes: f96ee41be16a ("crypto: lrw - Convert to skcipher")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Deduplicate le32_to_cpu_array() and cpu_to_le32_array() by moving them
to the generic header.
No functional change implied.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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This patch reverts commit 8e239e586ec3 ("crypto: api - remove
instance when test failed") and fixes the underlying problem
in a different way.
To recap, prior to the reverted commit, an instance that fails
a self-test is kept around. However, it would satisfy any new
lookups against its name and therefore the system may accumlulate
an unbounded number of failed instances for the same algorithm
name.
The reverted commit fixed it by unregistering the instance. Hoever,
this still does not prevent the creation of the same failed instance
over and over again each time the name is looked up.
This patch fixes it by keeping the failed instance around, just as
we would if it were a normal algorithm. However, the lookup code
has been udpated so that we do not attempt to create another
instance as long as this failed one is still registered. Of course,
you could still force a new creation by deleting the instance from
user-space.
A new error (ELIBBAD) has been commandeered for this purpose and
will be returned when all registered algorithm of a given name
have failed the self-test.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The function crypto_alg_lookup is only usd within the crypto API
and should be not be exported to the modules. This patch marks
it as a static function.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The lookup function in crypto_type was only used for the implicit
IV generators which have been completely removed from the crypto
API.
This patch removes the lookup function as it is now useless.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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In order to be able to test yield support under preempt, add a test
vector for CRC-T10DIF that is long enough to take multiple iterations
(and thus possible preemption between them) of the primary loop of the
accelerated x86 and arm64 implementations.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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On the quest to remove all VLAs from the kernel[1], this switches to
a pair of kmalloc regions instead of using the stack. This also moves
the get_random_bytes() after all allocations (and drops the needless
"nbytes" variable).
[1] https://lkml.org/lkml/2018/3/7/621
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Add testmgr tests for the newly introduced SM4 ECB symmetric cipher.
Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Introduce the SM4 cipher algorithms (OSCCA GB/T 32907-2016).
SM4 (GBT.32907-2016) is a cryptographic standard issued by the
Organization of State Commercial Administration of China (OSCCA)
as an authorized cryptographic algorithms for the use within China.
SMS4 was originally created for use in protecting wireless
networks, and is mandated in the Chinese National Standard for
Wireless LAN WAPI (Wired Authentication and Privacy Infrastructure)
(GB.15629.11-2003).
Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Remove the MN10300 arch as the hardware is defunct.
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Masahiro Yamada <yamada.masahiro@socionext.com>
cc: linux-am33-list@redhat.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Apparently the ecdh use case was in bluetooth which always has single
element scatterlists, so the ecdh module was hard coded to expect
them. Now we're using this in TPM, we need multi-element
scatterlists, so remove this limitation.
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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TPM security routines require encryption and decryption with AES in
CFB mode, so add it to the Linux Crypto schemes. CFB is basically a
one time pad where the pad is generated initially from the encrypted
IV and then subsequently from the encrypted previous block of
ciphertext. The pad is XOR'd into the plain text to get the final
ciphertext.
https://en.wikipedia.org/wiki/Block_cipher_mode_of_operation#CFB
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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All users of ablk_helper have been converted over to crypto_simd, so
remove ablk_helper.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Now that all users of lrw_crypt() have been removed in favor of the LRW
template wrapping an ECB mode algorithm, remove lrw_crypt(). Also
remove crypto/lrw.h as that is no longer needed either; and fold
'struct lrw_table_ctx' into 'struct priv', lrw_init_table() into
setkey(), and lrw_free_table() into exit_tfm().
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Now that all users of xts_crypt() have been removed in favor of the XTS
template wrapping an ECB mode algorithm, remove xts_crypt().
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Convert the AESNI AVX and AESNI AVX2 implementations of Camellia from
the (deprecated) ablkcipher and blkcipher interfaces over to the
skcipher interface. Note that this includes replacing the use of
ablk_helper with crypto_simd.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Convert the x86 asm implementation of Camellia from the (deprecated)
blkcipher interface over to the skcipher interface.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The XTS template now wraps an ECB mode algorithm rather than the block
cipher directly. Therefore it is now redundant for crypto modules to
wrap their ECB code with generic XTS code themselves via xts_crypt().
Remove the xts-camellia-asm algorithm which did this. Users who request
xts(camellia) and previously would have gotten xts-camellia-asm will now
get xts(ecb-camellia-asm) instead, which is just as fast.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The LRW template now wraps an ECB mode algorithm rather than the block
cipher directly. Therefore it is now redundant for crypto modules to
wrap their ECB code with generic LRW code themselves via lrw_crypt().
Remove the lrw-camellia-asm algorithm which did this. Users who request
lrw(camellia) and previously would have gotten lrw-camellia-asm will now
get lrw(ecb-camellia-asm) instead, which is just as fast.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The LRW template now wraps an ECB mode algorithm rather than the block
cipher directly. Therefore it is now redundant for crypto modules to
wrap their ECB code with generic LRW code themselves via lrw_crypt().
Remove the lrw-camellia-aesni-avx2 algorithm which did this. Users who
request lrw(camellia) and previously would have gotten
lrw-camellia-aesni-avx2 will now get lrw(ecb-camellia-aesni-avx2)
instead, which is just as fast.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The LRW template now wraps an ECB mode algorithm rather than the block
cipher directly. Therefore it is now redundant for crypto modules to
wrap their ECB code with generic LRW code themselves via lrw_crypt().
Remove the lrw-camellia-aesni algorithm which did this. Users who
request lrw(camellia) and previously would have gotten
lrw-camellia-aesni will now get lrw(ecb-camellia-aesni) instead, which
is just as fast.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Convert the x86 asm implementation of Triple DES from the (deprecated)
blkcipher interface over to the skcipher interface.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Convert the x86 asm implementation of Blowfish from the (deprecated)
blkcipher interface over to the skcipher interface.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Convert the AVX implementation of CAST6 from the (deprecated) ablkcipher
and blkcipher interfaces over to the skcipher interface. Note that this
includes replacing the use of ablk_helper with crypto_simd.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The LRW template now wraps an ECB mode algorithm rather than the block
cipher directly. Therefore it is now redundant for crypto modules to
wrap their ECB code with generic LRW code themselves via lrw_crypt().
Remove the lrw-cast6-avx algorithm which did this. Users who request
lrw(cast6) and previously would have gotten lrw-cast6-avx will now get
lrw(ecb-cast6-avx) instead, which is just as fast.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Convert the AVX implementation of CAST5 from the (deprecated) ablkcipher
and blkcipher interfaces over to the skcipher interface. Note that this
includes replacing the use of ablk_helper with crypto_simd.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Convert the AVX implementation of Twofish from the (deprecated)
ablkcipher and blkcipher interfaces over to the skcipher interface.
Note that this includes replacing the use of ablk_helper with
crypto_simd.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The LRW template now wraps an ECB mode algorithm rather than the block
cipher directly. Therefore it is now redundant for crypto modules to
wrap their ECB code with generic LRW code themselves via lrw_crypt().
Remove the lrw-twofish-avx algorithm which did this. Users who request
lrw(twofish) and previously would have gotten lrw-twofish-avx will now
get lrw(ecb-twofish-avx) instead, which is just as fast.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Convert the 3-way implementation of Twofish from the (deprecated)
blkcipher interface over to the skcipher interface.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The XTS template now wraps an ECB mode algorithm rather than the block
cipher directly. Therefore it is now redundant for crypto modules to
wrap their ECB code with generic XTS code themselves via xts_crypt().
Remove the xts-twofish-3way algorithm which did this. Users who request
xts(twofish) and previously would have gotten xts-twofish-3way will now
get xts(ecb-twofish-3way) instead, which is just as fast.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The LRW template now wraps an ECB mode algorithm rather than the block
cipher directly. Therefore it is now redundant for crypto modules to
wrap their ECB code with generic LRW code themselves via lrw_crypt().
Remove the lrw-twofish-3way algorithm which did this. Users who request
lrw(twofish) and previously would have gotten lrw-twofish-3way will now
get lrw(ecb-twofish-3way) instead, which is just as fast.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Convert the AVX and AVX2 implementations of Serpent from the
(deprecated) ablkcipher and blkcipher interfaces over to the skcipher
interface. Note that this includes replacing the use of ablk_helper
with crypto_simd.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The LRW template now wraps an ECB mode algorithm rather than the block
cipher directly. Therefore it is now redundant for crypto modules to
wrap their ECB code with generic LRW code themselves via lrw_crypt().
Remove the lrw-serpent-avx algorithm which did this. Users who request
lrw(serpent) and previously would have gotten lrw-serpent-avx will now
get lrw(ecb-serpent-avx) instead, which is just as fast.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The LRW template now wraps an ECB mode algorithm rather than the block
cipher directly. Therefore it is now redundant for crypto modules to
wrap their ECB code with generic LRW code themselves via lrw_crypt().
Remove the lrw-serpent-avx2 algorithm which did this. Users who request
lrw(serpent) and previously would have gotten lrw-serpent-avx2 will now
get lrw(ecb-serpent-avx2) instead, which is just as fast.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Convert the SSE2 implementation of Serpent from the (deprecated)
ablkcipher and blkcipher interfaces over to the skcipher interface.
Note that this includes replacing the use of ablk_helper with
crypto_simd.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The XTS template now wraps an ECB mode algorithm rather than the block
cipher directly. Therefore it is now redundant for crypto modules to
wrap their ECB code with generic XTS code themselves via xts_crypt().
Remove the xts-serpent-sse2 algorithm which did this. Users who request
xts(serpent) and previously would have gotten xts-serpent-sse2 will now
get xts(ecb-serpent-sse2) instead, which is just as fast.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The LRW template now wraps an ECB mode algorithm rather than the block
cipher directly. Therefore it is now redundant for crypto modules to
wrap their ECB code with generic LRW code themselves via lrw_crypt().
Remove the lrw-serpent-sse2 algorithm which did this. Users who request
lrw(serpent) and previously would have gotten lrw-serpent-sse2 will now
get lrw(ecb-serpent-sse2) instead, which is just as fast.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Add a function to crypto_simd that registers an array of skcipher
algorithms, then allocates and registers the simd wrapper algorithms for
them. It assumes the naming scheme where the names of the underlying
algorithms are prefixed with two underscores.
Also add the corresponding 'unregister' function.
Most of the x86 crypto modules will be able to use these.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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The asymmetric key type allows an X.509 certificate to be added even if
its signature's hash algorithm is not available in the crypto API. In
that case 'payload.data[asym_auth]' will be NULL. But the key
restriction code failed to check for this case before trying to use the
signature, resulting in a NULL pointer dereference in
key_or_keyring_common() or in restrict_link_by_signature().
Fix this by returning -ENOPKG when the signature is unsupported.
Reproducer when all the CONFIG_CRYPTO_SHA512* options are disabled and
keyctl has support for the 'restrict_keyring' command:
keyctl new_session
keyctl restrict_keyring @s asymmetric builtin_trusted
openssl req -new -sha512 -x509 -batch -nodes -outform der \
| keyctl padd asymmetric desc @s
Fixes: fb2b7eea1a8e ("KEYS: Move the point of trust determination to __key_link()")
Cc: <stable@vger.kernel.org> # v4.7+
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: David Howells <dhowells@redhat.com>
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