tree a09e637c081d3b1858f2c2b8ecb614301c6ef267
parent e732f044432d6b69d2be45df96f3937a48621cb6
author Gilles Peskine <Gilles.Peskine@arm.com> 1572280126 +0100
committer Gilles Peskine <Gilles.Peskine@arm.com> 1581445587 +0100

Fix CTR_DRBG benchmark

You can't reuse a CTR_DRBG context without free()ing it and
re-init()ing. This generally happened to work, but was never
guaranteed. It could have failed with alternative implementations of
the AES module because mbedtls_ctr_drbg_seed() calls
mbedtls_aes_init() on a context which is already initialized if
mbedtls_ctr_drbg_seed() hasn't been called before, plausibly causing a
memory leak. Calling free() and seed() with no intervening init fails
when MBEDTLS_THREADING_C is enabled and all-bits-zero is not a valid
mutex representation. So add the missing free() and init().