Convert blkcipher to skcipher for the synchronous versions of AES,
DES and ARC4.
The Block Cipher API was depracated for a while and was removed with
Linux 5.5. So switch this driver to the skcipher API.
Signed-off-by: Daniel Kestrel <kestrel1974@t-online.de>
Some devices initialize AES during boot and AES works out of the box
and the correct endianess is set.
NDC means (No Danube Compatibility Mode) and the endianess setting has
no effect if its set to 0.
NDC 0: OFF ENDI bit cannot be written as in Danube
To make it work for other devices, the NDC control register needs to
be set to 1.
Signed-off-by: Daniel Kestrel <kestrel1974@t-online.de>
OpenSSL with cryptdev support uses the data encryption unit (DEU) driver
for hard accelerated processing of ciphers/digests, if the flag
CRYPTO_ALG_KERN_DRIVER_ONLY is set.
Signed-off-by: Mathias Kresin <dev@kresin.me>
[fix commit title prefix]
Signed-off-by: Daniel Kestrel <kestrel1974@t-online.de>
Even if the minimum blocksize is set to 16 (AES_BLOCK_SIZE), the crypto
manager tests pass 499 bytes of data to the aes-ctr encryption, from
which only 496 bytes are actually encrypted.
Reading the comment regarding the minimum blocksize, it only states that
it's the "smallest possible unit which can be transformed with this
algorithm". Which doesn't necessarily mean, the data have to be a
multiple of the minimal blocksize.
All kernel hardware crypto driver enforce a minimum blocksize of 1,
which perfect fine works for the lantiq data encryption unit as well.
Lower the blocksize limit to 1, to process not padded data as well.
In AES for processing the remaining bytes, uninitialized pointers
were used.
This patch fixes using uninitialized pointers and wrong offsets.
Signed-off-by: Mathias Kresin <dev@kresin.me>
[fix commit title prefix]
Signed-off-by: Daniel Kestrel <kestrel1974@t-online.de>
When handling non-aligned remaining data (not padded to 16 byte
[AES_BLOCK_SIZE]), a full 16 byte block is read from the input buffer
and written to the output buffer after en-/decryption.
While code already assumes that an input buffer could have less than 16
byte remaining, as it can be seen by the code zeroing the remaining
bytes till AES_BLOCK_SIZE, the full AES_BLOCK_SIZE is read.
An output buffer size of a multiple of AES_BLOCK_SIZE is expected but
never validated.
To get rid of the read/write behind buffer, use a temporary buffer when
dealing with not padded data and only write as much bytes to the output
as we read.
Do not memcpy directly to the register, to make used of the endian swap
macro and to trigger the crypto start operator via the ID0R to trigger
the register. Since we might need an endian swap for the output in
future, use a temporary buffer for the output as well.
The issue could not be observed so far, since all caller of ifx_deu_aes
will ignore the padded (remaining) data. Considering that the minimum
blocksize for the algorithm is set to AES_BLOCK_SIZE, the behaviour
could be called expected.
Signed-off-by: Mathias Kresin <dev@kresin.me>
[fix commit title prefix]
Signed-off-by: Daniel Kestrel <kestrel1974@t-online.de>
The crypto algorithms are registered and available to the system before
the chip is actually powered on and the generic parameter for the DEU
behaviour set.
The issue can mainly be observed if the crypto manager tests are enabled
in the kernel config. The crypto manager test run directly after an
algorithm is registered.
Signed-off-by: Mathias Kresin <dev@kresin.me>
[fix commit title prefix]
Signed-off-by: Daniel Kestrel <kestrel1974@t-online.de>
This drops kernel version switches for versions not supported by
OpenWrt master at the moment. This only adjusts local code, but
doesn't touch patches to existing external packages.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Upstream commit 84ede58dfcd1d ("crypto: hash - remove
CRYPTO_ALG_TYPE_DIGEST") drops the CRYPTO_ALG_TYPE_DIGEST define because
it has the same value as CRYPTO_ALG_TYPE_HASH. This was the case for
earlier kernels as well. Switch to CRYPTO_ALG_TYPE_HASH to fix building
against Linux 5.4.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
This is fixing multiple compile problems with kernel 4.14 and updates the
code to take care of changes introduced between kernel 4.9 and 4.14.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Mathias Kresin <dev@kresin.me>
With the default priority of 0, the DEU algos would be overlapped
by the generic algos (if available).
To fix this, set the cra_priority of the hardware algos to the
recommended value of 300/400.
Signed-off-by: Martin Schiller <mschiller@tdt.de>
Remove the "DEU test manager" code which has not been used for more than
two years (as the kernel module is not installed anymore since r38731).
This fixes compilation on kernel 4.3, which removes
aead_request_set_assoc (and newer kernels).
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
SVN-Revision: 48308
Upstream linux 4.2 commit 84be456f883c4685680fba8e5154b5f72e92957e
"remove <asm/scatterlist.h>" requires us to include linux/scatterlist.h
instead. This also works with older kernels (at least 4.1, thanks to
Hauke Mehrtens for testing).
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
SVN-Revision: 48282
