// Copyright 2019 The age Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package main

import (
	"crypto/rand"
	"encoding/binary"
	"strings"
)

var testOnlyFixedRandomWord string

func randomWord() string {
	if testOnlyFixedRandomWord != "" {
		return testOnlyFixedRandomWord
	}
	buf := make([]byte, 2)
	if _, err := rand.Read(buf); err != nil {
		panic(err)
	}
	n := binary.BigEndian.Uint16(buf)
	return wordlist[int(n)%2048]
}

// wordlist is the BIP39 list of 2048 english words, and it's used to generate
// the suggested passphrases.
var wordlist = strings.Split(`abandon ability able about above absent absorb abstract absurd abuse access accident account accuse achieve acid acoustic acquire across act action actor actress actual adapt add addict address adjust admit adult advance advice aerobic affair afford afraid again age agent agree ahead aim air airport aisle alarm album alcohol alert alien all alley allow almost alone alpha already also alter always amateur amazing among amount amused analyst anchor ancient anger angle angry animal ankle announce annual another answer antenna antique anxiety any apart apology appear apple approve april arch arctic area arena argue arm armed armor army around arrange arrest arrive arrow art artefact artist artwork ask aspect assault asset assist assume asthma athlete atom attack attend attitude attract auction audit august aunt author auto autumn average avocado avoid awake aware away awesome awful awkward axis baby bachelor bacon badge bag balance balcony ball bamboo banana 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entry envelope episode equal equip era erase erode erosion error erupt escape essay essence estate eternal ethics evidence evil evoke evolve exact example excess exchange excite exclude excuse execute exercise exhaust exhibit exile exist exit exotic expand expect expire explain expose express extend extra eye eyebrow fabric face faculty fade faint faith fall false fame family famous fan fancy fantasy farm fashion fat fatal father fatigue fault favorite feature february federal fee feed feel female fence festival fetch fever few fiber fiction field figure file film filter final find fine finger finish fire firm first fiscal fish fit fitness fix flag flame flash flat flavor flee flight flip float flock floor flower fluid flush fly foam focus fog foil fold follow food foot force forest forget fork fortune forum forward fossil foster found fox fragile frame frequent fresh friend fringe frog front frost frown frozen fruit fuel fun funny furnace fury future gadget gain galaxy gallery game 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inflict inform inhale inherit initial inject injury inmate inner innocent input inquiry insane insect inside inspire install intact interest into invest invite involve iron island isolate issue item ivory jacket jaguar jar jazz jealous jeans jelly jewel job join joke journey joy judge juice jump jungle junior junk just kangaroo keen keep ketchup key kick kid kidney kind kingdom kiss kit kitchen kite kitten kiwi knee knife knock know lab label labor ladder lady lake lamp language laptop large later latin laugh laundry lava law lawn lawsuit layer lazy leader leaf learn leave lecture left leg legal legend leisure lemon lend length lens leopard lesson letter level liar liberty library license life lift light like limb limit link lion liquid list little live lizard load loan lobster local lock logic lonely long loop lottery loud lounge love loyal lucky luggage lumber lunar lunch luxury lyrics machine mad magic magnet maid mail main major make mammal man manage mandate mango mansion manual 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