[PATCH v7 00/11] Regression fixes/clean ups in the Qualcomm crypto engine driver

From: Thara Gopinath
Date: Thu Feb 11 2021 - 15:07:14 EST


This patch series is a result of running kernel crypto fuzz tests (by
enabling CONFIG_CRYPTO_MANAGER_EXTRA_TESTS) on the transformations
currently supported via the Qualcomm crypto engine on sdm845. The first
nine patches are fixes for various regressions found during testing. The
last two patches are minor clean ups of unused variable and parameters.

v6->v7:
- Fixed sparse warning in patch 4 as pointed out by Herbert Xu.
This means the checking if any two keys are same for triple
des algorithms has been reverted back to using conditional OR
instead of using bitwise OR.
- Rebased to 5.11-rc7.

v5->v6:
- Return 0 for zero length messages instead of -EOPNOTSUPP in the
cipher algorithms as pointed out by Eric Biggers.
- Remove the wrong TODO in patch 6 which implied that AES CBC can
do partial block sizes when it is actually CTS mode that can as
pointed out my Eric Biggers.

v4->v5:
- Fixed build warning/error in patch for wrong assignment of const
pointer as reported by kernel test robot <lkp@xxxxxxxxx>.
- Rebased to 5.11-rc6.
v3->v4:
- Fixed the bug where only two bytes of byte_count were getting
saved and restored instead of all eight bytes. Thanks Bjorn for
catching this.
- Split patch 3 "Fix regressions found during fuzz testing" into
6 patches as requested by Bjorn.
- Dropped crypto from all subject headers.
- Rebased to 5.11-rc5
v2->v3:
- Made the comparison between keys to check if any two keys are
same for triple des algorithms constant-time as per
Nym Seddon's suggestion.
- Rebased to 5.11-rc4.
v1->v2:
- Introduced custom struct qce_sha_saved_state to store and restore
partial sha transformation.
- Rebased to 5.11-rc3.

Thara Gopinath (11):
crypto: qce: sha: Restore/save ahash state with custom struct in
export/import
crypto: qce: sha: Hold back a block of data to be transferred as part
of final
crypto: qce: skcipher: Return unsupported if key1 and key 2 are same
for AES XTS algorithm
crypto: qce: skcipher: Return unsupported if any three keys are same
for DES3 algorithms
crypto: qce: skcipher: Return error for zero length messages
crypto: qce: skcipher: Return error for non-blocksize data(ECB/CBC
algorithms)
crypto: qce: skcipher: Set ivsize to 0 for ecb(aes)
*** BLURB HERE ***

Thara Gopinath (11):
crypto: qce: sha: Restore/save ahash state with custom struct in
export/import
crypto: qce: sha: Hold back a block of data to be transferred as part
of final
crypto: qce: skcipher: Return unsupported if key1 and key 2 are same
for AES XTS algorithm
crypto: qce: skcipher: Return unsupported if any three keys are same
for DES3 algorithms
crypto: qce: skcipher: Return error for zero length messages
crypto: qce: skcipher: Return error for non-blocksize data(ECB/CBC
algorithms)
crypto: qce: skcipher: Set ivsize to 0 for ecb(aes)
crypto: qce: skcipher: Improve the conditions for requesting AES
fallback cipher
crypto: qce: common: Set data unit size to message length for AES XTS
transformation
crypto: qce: Remover src_tbl from qce_cipher_reqctx
crypto: qce: Remove totallen and offset in qce_start

drivers/crypto/qce/cipher.h | 1 -
drivers/crypto/qce/common.c | 25 +++---
drivers/crypto/qce/common.h | 3 +-
drivers/crypto/qce/sha.c | 143 +++++++++++++---------------------
drivers/crypto/qce/skcipher.c | 69 +++++++++++++---
5 files changed, 126 insertions(+), 115 deletions(-)

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2.25.1