Function rust_sodium_sys::crypto_box_curve25519xsalsa20poly1305

pub unsafe extern "C" fn crypto_box_curve25519xsalsa20poly1305(
    c: *mut u8, 
    m: *const u8, 
    mlen: c_ulonglong, 
    n: *const u8, 
    pk: *const u8, 
    sk: *const u8
) -> c_int