diff --git a/.aegir.js b/.aegir.js
index 25fbe20..3faa51b 100644
--- a/.aegir.js
+++ b/.aegir.js
@@ -1,3 +1,3 @@
 module.exports = {
-  bundlesize: { maxSize: '155kB' }
+  bundlesize: { maxSize: '124kB' }
 }
diff --git a/.eslintignore b/.eslintignore
deleted file mode 100644
index fb5e189..0000000
--- a/.eslintignore
+++ /dev/null
@@ -1 +0,0 @@
-src/keys/keys.proto.js
\ No newline at end of file
diff --git a/package.json b/package.json
index 098d204..e94108e 100644
--- a/package.json
+++ b/package.json
@@ -37,25 +37,20 @@
   ],
   "license": "MIT",
   "dependencies": {
-    "asmcrypto.js": "^2.3.2",
-    "bn.js": "^5.0.0",
-    "browserify-aes": "^1.2.0",
-    "bs58": "^4.0.1",
+    "buffer": "^5.5.0",
     "err-code": "^2.0.0",
     "iso-random-stream": "^1.1.0",
     "keypair": "^1.0.1",
-    "libp2p-crypto-secp256k1": "~0.4.0",
-    "multihashing-async": "~0.8.0",
+    "libp2p-crypto-secp256k1": "^0.4.2",
+    "multibase": "^0.6.0",
+    "multihashing-async": "^0.8.1",
     "node-forge": "~0.9.1",
     "pem-jwk": "^2.0.0",
     "protons": "^1.0.1",
-    "rsa-pem-to-jwk": "^1.1.3",
-    "tweetnacl": "^1.0.1",
     "ursa-optional": "~0.10.1"
   },
   "devDependencies": {
-    "@types/bn.js": "^4.11.6",
-    "@types/chai": "^4.2.7",
+    "@types/chai": "^4.2.11",
     "@types/chai-string": "^1.4.2",
     "@types/dirty-chai": "^2.0.2",
     "@types/mocha": "^7.0.1",
diff --git a/src/aes/ciphers-browser.js b/src/aes/ciphers-browser.js
index 5aee05a..4e8f160 100644
--- a/src/aes/ciphers-browser.js
+++ b/src/aes/ciphers-browser.js
@@ -1,8 +1,27 @@
 'use strict'
-
-const crypto = require('browserify-aes')
+const { Buffer } = require('buffer')
+require('node-forge/lib/aes')
+const forge = require('node-forge/lib/forge')
 
 module.exports = {
-  createCipheriv: crypto.createCipheriv,
-  createDecipheriv: crypto.createDecipheriv
+  createCipheriv: (mode, key, iv) => {
+    const cipher2 = forge.cipher.createCipher('AES-CTR', key.toString('binary'))
+    cipher2.start({ iv: iv.toString('binary') })
+    return {
+      update: (data) => {
+        cipher2.update(forge.util.createBuffer(data.toString('binary')))
+        return Buffer.from(cipher2.output.getBytes(), 'binary')
+      }
+    }
+  },
+  createDecipheriv: (mode, key, iv) => {
+    const cipher2 = forge.cipher.createDecipher('AES-CTR', key.toString('binary'))
+    cipher2.start({ iv: iv.toString('binary') })
+    return {
+      update: (data) => {
+        cipher2.update(forge.util.createBuffer(data.toString('binary')))
+        return Buffer.from(cipher2.output.getBytes(), 'binary')
+      }
+    }
+  }
 }
diff --git a/src/aes/index-browser.js b/src/aes/index-browser.js
deleted file mode 100644
index a806917..0000000
--- a/src/aes/index-browser.js
+++ /dev/null
@@ -1,34 +0,0 @@
-'use strict'
-
-const asm = require('asmcrypto.js')
-const validateCipherMode = require('./cipher-mode')
-
-exports.create = async function (key, iv) { // eslint-disable-line require-await
-  // Throws an error if mode is invalid
-  validateCipherMode(key)
-
-  const enc = new asm.AES_CTR.Encrypt({
-    key: key,
-    nonce: iv
-  })
-  const dec = new asm.AES_CTR.Decrypt({
-    key: key,
-    nonce: iv
-  })
-
-  const res = {
-    async encrypt (data) { // eslint-disable-line require-await
-      return Buffer.from(
-        enc.process(data).result
-      )
-    },
-
-    async decrypt (data) { // eslint-disable-line require-await
-      return Buffer.from(
-        dec.process(data).result
-      )
-    }
-  }
-
-  return res
-}
diff --git a/src/hmac/index-browser.js b/src/hmac/index-browser.js
index 1eeb7df..cda9da2 100644
--- a/src/hmac/index-browser.js
+++ b/src/hmac/index-browser.js
@@ -1,5 +1,5 @@
 'use strict'
-
+const { Buffer } = require('buffer')
 const webcrypto = require('../webcrypto')
 const lengths = require('./lengths')
 
diff --git a/src/keys/ed25519-class.js b/src/keys/ed25519-class.js
index b9f7106..1cba96f 100644
--- a/src/keys/ed25519-class.js
+++ b/src/keys/ed25519-class.js
@@ -1,8 +1,9 @@
 'use strict'
 
-const multihashing = require('multihashing-async')
+const { Buffer } = require('buffer')
+const sha = require('multihashing-async/src/sha')
 const protobuf = require('protons')
-const bs58 = require('bs58')
+const multibase = require('multibase')
 const errcode = require('err-code')
 
 const crypto = require('./ed25519')
@@ -33,7 +34,7 @@ class Ed25519PublicKey {
   }
 
   async hash () { // eslint-disable-line require-await
-    return multihashing(this.bytes, 'sha2-256')
+    return sha.multihashing(this.bytes, 'sha2-256')
   }
 }
 
@@ -69,7 +70,7 @@ class Ed25519PrivateKey {
   }
 
   async hash () { // eslint-disable-line require-await
-    return multihashing(this.bytes, 'sha2-256')
+    return sha.multihashing(this.bytes, 'sha2-256')
   }
 
   /**
@@ -83,7 +84,7 @@ class Ed25519PrivateKey {
    */
   async id () {
     const hash = await this.public.hash()
-    return bs58.encode(hash)
+    return multibase.encode('base58btc', hash).toString().slice(1)
   }
 }
 
@@ -100,13 +101,13 @@ function unmarshalEd25519PublicKey (bytes) {
 }
 
 async function generateKeyPair () {
-  const { secretKey, publicKey } = await crypto.generateKey()
-  return new Ed25519PrivateKey(secretKey, publicKey)
+  const { privateKey, publicKey } = await crypto.generateKey()
+  return new Ed25519PrivateKey(privateKey, publicKey)
 }
 
 async function generateKeyPairFromSeed (seed) {
-  const { secretKey, publicKey } = await crypto.generateKeyFromSeed(seed)
-  return new Ed25519PrivateKey(secretKey, publicKey)
+  const { privateKey, publicKey } = await crypto.generateKeyFromSeed(seed)
+  return new Ed25519PrivateKey(privateKey, publicKey)
 }
 
 function ensureKey (key, length) {
diff --git a/src/keys/ed25519.js b/src/keys/ed25519.js
index cbe6c86..140cc14 100644
--- a/src/keys/ed25519.js
+++ b/src/keys/ed25519.js
@@ -1,23 +1,24 @@
 'use strict'
 
-const nacl = require('tweetnacl')
-
-exports.publicKeyLength = nacl.sign.publicKeyLength
-exports.privateKeyLength = nacl.sign.secretKeyLength
+require('node-forge/lib/ed25519')
+const forge = require('node-forge/lib/forge')
+exports.publicKeyLength = forge.pki.ed25519.constants.PUBLIC_KEY_BYTE_LENGTH
+exports.privateKeyLength = forge.pki.ed25519.constants.PRIVATE_KEY_BYTE_LENGTH
 
 exports.generateKey = async function () { // eslint-disable-line require-await
-  return nacl.sign.keyPair()
+  return forge.pki.ed25519.generateKeyPair()
 }
 
 // seed should be a 32 byte uint8array
 exports.generateKeyFromSeed = async function (seed) { // eslint-disable-line require-await
-  return nacl.sign.keyPair.fromSeed(seed)
+  return forge.pki.ed25519.generateKeyPair({ seed })
 }
 
 exports.hashAndSign = async function (key, msg) { // eslint-disable-line require-await
-  return Buffer.from(nacl.sign.detached(msg, key))
+  return forge.pki.ed25519.sign({ message: msg, privateKey: key })
+  // return Buffer.from(nacl.sign.detached(msg, key))
 }
 
 exports.hashAndVerify = async function (key, sig, msg) { // eslint-disable-line require-await
-  return nacl.sign.detached.verify(msg, sig, key)
+  return forge.pki.ed25519.verify({ signature: sig, message: msg, publicKey: key })
 }
diff --git a/src/keys/index.js b/src/keys/index.js
index 7775c71..a05d8cc 100644
--- a/src/keys/index.js
+++ b/src/keys/index.js
@@ -1,9 +1,9 @@
 'use strict'
 
+const { Buffer } = require('buffer')
 const protobuf = require('protons')
 const keysPBM = protobuf(require('./keys.proto'))
 require('node-forge/lib/asn1')
-require('node-forge/lib/rsa')
 require('node-forge/lib/pbe')
 const forge = require('node-forge/lib/forge')
 const errcode = require('err-code')
diff --git a/src/keys/key-stretcher.js b/src/keys/key-stretcher.js
index c9c5366..4870620 100644
--- a/src/keys/key-stretcher.js
+++ b/src/keys/key-stretcher.js
@@ -1,5 +1,5 @@
 'use strict'
-
+const { Buffer } = require('buffer')
 const errcode = require('err-code')
 const hmac = require('../hmac')
 
diff --git a/src/keys/rsa-browser.js b/src/keys/rsa-browser.js
index ffdd646..be78717 100644
--- a/src/keys/rsa-browser.js
+++ b/src/keys/rsa-browser.js
@@ -1,5 +1,6 @@
 'use strict'
 
+const { Buffer } = require('buffer')
 const webcrypto = require('../webcrypto')
 const randomBytes = require('../random-bytes')
 
diff --git a/src/keys/rsa-class.js b/src/keys/rsa-class.js
index 6a4775c..9cce175 100644
--- a/src/keys/rsa-class.js
+++ b/src/keys/rsa-class.js
@@ -1,14 +1,14 @@
 'use strict'
 
-const multihashing = require('multihashing-async')
+const sha = require('multihashing-async/src/sha')
 const protobuf = require('protons')
-const bs58 = require('bs58')
+const multibase = require('multibase')
 const errcode = require('err-code')
 
 const crypto = require('./rsa')
 const pbm = protobuf(require('./keys.proto'))
 require('node-forge/lib/sha512')
-require('node-forge/lib/pbe')
+require('node-forge/lib/ed25519')
 const forge = require('node-forge/lib/forge')
 
 class RsaPublicKey {
@@ -40,7 +40,7 @@ class RsaPublicKey {
   }
 
   async hash () { // eslint-disable-line require-await
-    return multihashing(this.bytes, 'sha2-256')
+    return sha.multihashing(this.bytes, 'sha2-256')
   }
 }
 
@@ -88,7 +88,7 @@ class RsaPrivateKey {
   }
 
   async hash () { // eslint-disable-line require-await
-    return multihashing(this.bytes, 'sha2-256')
+    return sha.multihashing(this.bytes, 'sha2-256')
   }
 
   /**
@@ -102,7 +102,7 @@ class RsaPrivateKey {
    */
   async id () {
     const hash = await this.public.hash()
-    return bs58.encode(hash)
+    return multibase.encode('base58btc', hash).toString().slice(1)
   }
 
   /**
diff --git a/test/aes/aes.spec.js b/test/aes/aes.spec.js
index 1c0cdd7..45b4b11 100644
--- a/test/aes/aes.spec.js
+++ b/test/aes/aes.spec.js
@@ -2,7 +2,7 @@
 /* eslint-disable valid-jsdoc */
 /* eslint-env mocha */
 'use strict'
-
+const { Buffer } = require('buffer')
 const chai = require('chai')
 const dirtyChai = require('dirty-chai')
 const expect = chai.expect
diff --git a/test/fixtures/go-elliptic-key.js b/test/fixtures/go-elliptic-key.js
index 8e7d00c..21dc93e 100644
--- a/test/fixtures/go-elliptic-key.js
+++ b/test/fixtures/go-elliptic-key.js
@@ -1,4 +1,5 @@
 'use strict'
+const { Buffer } = require('buffer')
 
 module.exports = {
   curve: 'P-256',
diff --git a/test/fixtures/go-key-ed25519.js b/test/fixtures/go-key-ed25519.js
index 756bf0e..2fc7830 100644
--- a/test/fixtures/go-key-ed25519.js
+++ b/test/fixtures/go-key-ed25519.js
@@ -1,4 +1,5 @@
 'use strict'
+const { Buffer } = require('buffer')
 
 module.exports = {
   // These were generated in a gore (https://github.com/motemen/gore) repl session:
diff --git a/test/fixtures/go-key-rsa.js b/test/fixtures/go-key-rsa.js
index 0b26092..7c822f4 100644
--- a/test/fixtures/go-key-rsa.js
+++ b/test/fixtures/go-key-rsa.js
@@ -1,5 +1,5 @@
 'use strict'
-
+const { Buffer } = require('buffer')
 module.exports = {
   private: {
     hash: Buffer.from([
diff --git a/test/fixtures/go-stretch-key.js b/test/fixtures/go-stretch-key.js
index 141e787..8880a8e 100644
--- a/test/fixtures/go-stretch-key.js
+++ b/test/fixtures/go-stretch-key.js
@@ -1,5 +1,5 @@
 'use strict'
-
+const { Buffer } = require('buffer')
 module.exports = [{
   cipher: 'AES-256',
   hash: 'SHA256',
diff --git a/test/fixtures/secp256k1.js b/test/fixtures/secp256k1.js
index 7851721..21f72f1 100644
--- a/test/fixtures/secp256k1.js
+++ b/test/fixtures/secp256k1.js
@@ -1,5 +1,6 @@
 'use strict'
 
+const { Buffer } = require('buffer')
 module.exports = {
   // protobuf marshaled key pair generated with libp2p-crypto-secp256k1
   // and marshaled with libp2p-crypto.marshalPublicKey / marshalPrivateKey
diff --git a/test/helpers/test-garbage-error-handling.js b/test/helpers/test-garbage-error-handling.js
index 75d8ab2..fbe978f 100644
--- a/test/helpers/test-garbage-error-handling.js
+++ b/test/helpers/test-garbage-error-handling.js
@@ -1,6 +1,7 @@
 /* eslint-env mocha */
 'use strict'
 
+const { Buffer } = require('buffer')
 const util = require('util')
 const garbage = [Buffer.from('00010203040506070809', 'hex'), {}, null, false, undefined, true, 1, 0, Buffer.from(''), 'aGVsbG93b3JsZA==', 'helloworld', '']
 
diff --git a/test/hmac/hmac.spec.js b/test/hmac/hmac.spec.js
index 72d5372..75fd997 100644
--- a/test/hmac/hmac.spec.js
+++ b/test/hmac/hmac.spec.js
@@ -1,7 +1,7 @@
 /* eslint max-nested-callbacks: ["error", 8] */
 /* eslint-env mocha */
 'use strict'
-
+const { Buffer } = require('buffer')
 const chai = require('chai')
 const dirtyChai = require('dirty-chai')
 const expect = chai.expect
diff --git a/test/keys/ed25519.spec.js b/test/keys/ed25519.spec.js
index 1fc2716..bfedbec 100644
--- a/test/keys/ed25519.spec.js
+++ b/test/keys/ed25519.spec.js
@@ -1,6 +1,7 @@
 /* eslint-env mocha */
 'use strict'
 
+const { Buffer } = require('buffer')
 const chai = require('chai')
 const dirtyChai = require('dirty-chai')
 const expect = chai.expect
diff --git a/test/keys/rsa.spec.js b/test/keys/rsa.spec.js
index dc8db15..cc4daec 100644
--- a/test/keys/rsa.spec.js
+++ b/test/keys/rsa.spec.js
@@ -2,6 +2,7 @@
 /* eslint-env mocha */
 'use strict'
 
+const { Buffer } = require('buffer')
 const chai = require('chai')
 const dirtyChai = require('dirty-chai')
 const expect = chai.expect
diff --git a/test/util.spec.js b/test/util.spec.js
index 5c362d1..cd7832e 100644
--- a/test/util.spec.js
+++ b/test/util.spec.js
@@ -3,6 +3,7 @@
 'use strict'
 
 const chai = require('chai')
+const { Buffer } = require('buffer')
 const dirtyChai = require('dirty-chai')
 const expect = chai.expect
 chai.use(dirtyChai)