tree 6f1c3c823aab96b98122a68936adcd163b31f7f4
parent 17d4286fd991ce36d91d98943bf0059b577c9599
author Jerome Forissier <jerome@forissier.org> 1578563022 +0100
committer Jérôme Forissier <jerome@forissier.org> 1578574199 +0100

core: ltc: SM2 PKE: fix bignum memory leaks

crypto_acipher_sm2_pke_encrypt() and crypto_acipher_sm2_pke_decrypt()
leak some bignum memory due to missing calls to ecc_free() and also due
to the fact that the x and y fields of an ecc_point are overwritten.
This is all the more problematic that bignum allocations use a special
memory pool [1] that can easily cause deadlocks when misused.

This commit fixes these problems.

[1] Commit a2eb5b55d169 ("libutils: add mempool API")

Fixes: f9a78287dd12 ("core: ltc: add support for SM2 PKE")
Signed-off-by: Jerome Forissier <jerome@forissier.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>