tree bea869d442c2544d43ca926d8e0a685add72e9ff
parent 4ba87fc958cf267fe175c2323ce631e40b17ae7f
author Gilles Peskine <Gilles.Peskine@arm.com> 1521482768 +0100
committer Gilles Peskine <Gilles.Peskine@arm.com> 1522529629 +0200

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.