pub unsafe extern "C" fn crypto_aead_chacha20poly1305_ietf_decrypt(
m: *mut c_uchar,
mlen_p: *mut c_ulonglong,
nsec: *mut c_uchar,
c: *const c_uchar,
clen: c_ulonglong,
ad: *const c_uchar,
adlen: c_ulonglong,
npub: *const c_uchar,
k: *const c_uchar,
) -> c_int