const poly1305 = require('./poly1305')
const { crypto_verify_16 } = require('./crypto_verify')

module.exports = {
  crypto_onetimeauth,
  crypto_onetimeauth_verify
}

function crypto_onetimeauth(out, outpos, m, mpos, n, k) {
  var s = new poly1305(k);
  s.update(m, mpos, n);
  s.finish(out, outpos);
  return 0;
}

function crypto_onetimeauth_verify(h, hpos, m, mpos, n, k) {
  var x = new Uint8Array(16);
  crypto_onetimeauth(x,0,m,mpos,n,k);
  return crypto_verify_16(h,hpos,x,0);
}