diff options
| author | Tudor Ambarus <tudor.ambarus@microchip.com> | 2019-12-05 09:54:00 +0000 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2019-12-11 16:46:22 +0800 |
| commit | c65d123742a7bf2a5bc9fa8398e1fd2376eb4c43 (patch) | |
| tree | 7d189182bbd03de10281c0d13ca9c65e2489d9c6 /drivers/crypto/atmel-tdes.c | |
| parent | 75eca7a7f2abe5fc317ec51408501a4c7e096ce8 (diff) | |
crypto: atmel-{aes,tdes} - Do not save IV for ECB mode
ECB mode does not use IV.
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/atmel-tdes.c')
| -rw-r--r-- | drivers/crypto/atmel-tdes.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/crypto/atmel-tdes.c b/drivers/crypto/atmel-tdes.c index 8a067c1dd455..cf53b57880a2 100644 --- a/drivers/crypto/atmel-tdes.c +++ b/drivers/crypto/atmel-tdes.c @@ -593,12 +593,14 @@ atmel_tdes_set_iv_as_last_ciphertext_block(struct atmel_tdes_dev *dd) static void atmel_tdes_finish_req(struct atmel_tdes_dev *dd, int err) { struct skcipher_request *req = dd->req; + struct atmel_tdes_reqctx *rctx = skcipher_request_ctx(req); clk_disable_unprepare(dd->iclk); dd->flags &= ~TDES_FLAGS_BUSY; - atmel_tdes_set_iv_as_last_ciphertext_block(dd); + if ((rctx->mode & TDES_FLAGS_OPMODE_MASK) != TDES_FLAGS_ECB) + atmel_tdes_set_iv_as_last_ciphertext_block(dd); req->base.complete(&req->base, err); } @@ -728,7 +730,8 @@ static int atmel_tdes_crypt(struct skcipher_request *req, unsigned long mode) rctx->mode = mode; - if (!(mode & TDES_FLAGS_ENCRYPT) && req->src == req->dst) { + if ((mode & TDES_FLAGS_OPMODE_MASK) != TDES_FLAGS_ECB && + !(mode & TDES_FLAGS_ENCRYPT) && req->src == req->dst) { unsigned int ivsize = crypto_skcipher_ivsize(skcipher); if (req->cryptlen >= ivsize) |