Function libsodium_ffi::crypto_generichash_blake2b

pub unsafe extern "C" fn crypto_generichash_blake2b(
    out: *mut c_uchar, 
    outlen: size_t, 
    in_: *const c_uchar, 
    inlen: c_ulonglong, 
    key: *const c_uchar, 
    keylen: size_t
) -> c_int