tree 0b254ce2c8d8bcfca78d260033ff185a86999f1a
parent 80d47d0aba0f7810a1c56caa0cf86a280d8b9d0b
author Jerome Forissier <jerome@forissier.org> 1578563022 +0100
committer Jérôme Forissier <jerome@forissier.org> 1578574199 +0100

core: ltc: SM2 DSA: fix bignum memory leaks

crypto_acipher_sm2_dsa_sign() and crypto_acipher_sm2_dsa_verify() leak
some bignum memory due to missing calls to ecc_free().
This is all the more problematic that bignum allocations use a special
memory pool [1] that can easily cause deadlocks when misused.

This commit adds the missing calls.

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

Fixes: 76c7ba4b9ff7 ("core: ltc: add support for SM2 DSA")
Signed-off-by: Jerome Forissier <jerome@forissier.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>