Messages in this thread Patch in this message | | | From | Andrei Botila <> | Subject | [PATCH 16/22] crypto: ccree - add check for xts input length equal to zero | Date | Fri, 7 Aug 2020 19:20:04 +0300 |
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From: Andrei Botila <andrei.botila@nxp.com>
Standardize the way input lengths equal to 0 are handled in all skcipher algorithms. All the algorithms return 0 for input lengths equal to zero. This change has implications not only for xts(aes) but also for cts(cbc(aes)) and cts(cbc(paes)).
Cc: Gilad Ben-Yossef <gilad@benyossef.com> Signed-off-by: Andrei Botila <andrei.botila@nxp.com> --- drivers/crypto/ccree/cc_cipher.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/crypto/ccree/cc_cipher.c b/drivers/crypto/ccree/cc_cipher.c index 076669dc1035..112bb8b4dce6 100644 --- a/drivers/crypto/ccree/cc_cipher.c +++ b/drivers/crypto/ccree/cc_cipher.c @@ -912,17 +912,18 @@ static int cc_cipher_process(struct skcipher_request *req, /* STAT_PHASE_0: Init and sanity checks */ - if (validate_data_size(ctx_p, nbytes)) { - dev_dbg(dev, "Unsupported data size %d.\n", nbytes); - rc = -EINVAL; - goto exit_process; - } if (nbytes == 0) { /* No data to process is valid */ rc = 0; goto exit_process; } + if (validate_data_size(ctx_p, nbytes)) { + dev_dbg(dev, "Unsupported data size %d.\n", nbytes); + rc = -EINVAL; + goto exit_process; + } + if (ctx_p->fallback_on) { struct skcipher_request *subreq = skcipher_request_ctx(req); -- 2.17.1
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