tree 31318d487ea8d00145105a16ec692d30d31592c5
parent 6345e12161a7de83633205e39251878d1927f181
author Gilles Peskine <Gilles.Peskine@arm.com> 1622657866 +0200
committer Gilles Peskine <Gilles.Peskine@arm.com> 1624263281 +0200

Simplify mbedtls_debug_print_mpi and fix the case of empty bignums

Rewrite mbedtls_debug_print_mpi to be simpler and smaller. Leverage
mbedtls_mpi_bitlen() instead of manually looking for the leading
zeros.

Fix #4608: the old code made an invalid memory dereference when
X->n==0 (freshly initialized bignum with the value 0).

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>