MBEDTLS_HKDF_C macro

\def MBEDTLS_GCM_LARGE_TABLE Enable large pre-computed tables for Galois/Counter Mode (GCM). Can significantly increase throughput on systems without GCM hardware acceleration (e.g., AESNI, AESCE). The mbedtls_gcm_context size will increase by 3840 bytes. The code size will increase by roughly 344 bytes. Module: library/gcm.c Requires: MBEDTLS_GCM_C \def MBEDTLS_HKDF_C Enable the HKDF algorithm (RFC 5869). Module: library/hkdf.c Caller: Requires: MBEDTLS_MD_C This module adds support for the Hashed Message Authentication Code (HMAC)-based key derivation function (HKDF).