crypto_hash_init() function

crypto_hash_init - Initialize hash/HMAC function @alg: Hash algorithm @key: Key for keyed hash (e.g., HMAC) or %NULL if not needed @key_len: Length of the key in bytes Returns: Pointer to hash context to use with other hash functions or %NULL on failure This function is only used with internal TLSv1 implementation (CONFIG_TLS=internal). If that is not used, the crypto wrapper does not need to implement this.