ngtcp2_crypto_packet_protection_ivlen
=====================================

Synopsis
--------

*#include <ngtcp2/ngtcp2_crypto.h>*

.. function:: size_t ngtcp2_crypto_packet_protection_ivlen(const ngtcp2_crypto_aead *aead)

    
    `ngtcp2_crypto_packet_protection_ivlen` returns the length of IV
    used to encrypt QUIC packet.