fix: browser compatibility (#226)

Use libp2p-crypto instead of the node crypto module for browser compat

Author: achingbrain

.aegir.js

@@ -9,9 +9,6 @@ const esbuild = {
         build.onResolve({ filter: /^stream$/ }, () => {
           return { path: require.resolve('readable-stream') }
         })
-        build.onResolve({ filter: /^crypto$/ }, () => {
-          return { path: require.resolve('crypto-browserify') }
-        })
       }
     }
   ]

src/routing-table/index.js

@@ -5,7 +5,7 @@ const KBuck = require('k-bucket')
 const { xor: uint8ArrayXor } = require('uint8arrays/xor')
 const GENERATED_PREFIXES = require('./generated-prefix-list.json')
 const { sha256 } = require('multiformats/hashes/sha2')
-const crypto = require('crypto')
+const crypto = require('libp2p-crypto')
 const PeerId = require('peer-id')
 const utils = require('../utils')
 const debug = require('debug')

test/simulation/index.js

@@ -12,6 +12,7 @@ const { convertBuffer } = require('../../src/utils')
 const { sortClosestPeers } = require('../../src/utils')
 const DHT = require('../../src')
 const { fromString: uint8ArrayFromString } = require('uint8arrays/from-string')
+const crypto = require('libp2p-crypto')
 
 const NUM_PEERS = 10e3 // Peers to create, not including us
 const LATENCY_DEAD_NODE = 120e3 // How long dead nodes should take before erroring
@@ -134,7 +135,6 @@ async function GetClosestPeersSimulation () {
  * @returns {Array<PeerId>}
  */
 function createPeers (num) {
-  const crypto = require('crypto')
   const peers = [...new Array(num)].map(() => {
     return PeerId.createFromB58String(
       base58btc.baseEncode(crypto.randomBytes(34))