sctp_hash_context_t
sctp_hash_context_t ctx;
sctp_hash_context_t ctx;
sctp_hmac_init(uint16_t hmac_algo, sctp_hash_context_t *ctx)
sctp_hmac_update(uint16_t hmac_algo, sctp_hash_context_t *ctx,
sctp_hmac_final(uint16_t hmac_algo, sctp_hash_context_t *ctx,
sctp_hash_context_t ctx;
sctp_hash_context_t ctx;