tree 1760a93ad334262ac75d66b843896784e019272c
parent 6013004fa922febabdfde40abe498b7756235cab
author Gilles Peskine <Gilles.Peskine@arm.com> 1521482768 +0100
committer Gilles Peskine <Gilles.Peskine@arm.com> 1521567685 +0100

Robustness fix in mbedtls_ssl_derive_keys

In mbedtls_ssl_derive_keys, don't call mbedtls_md_hmac_starts in
ciphersuites that don't use HMAC. This doesn't change the behavior of
the code, but avoids relying on an uncaught error when attempting to
start an HMAC operation that hadn't been initialized.