diff --git a/.babelrc b/.babelrc
new file mode 100644
index 0000000..02f08fb
--- /dev/null
+++ b/.babelrc
@@ -0,0 +1,5 @@
+{
+  "presets": [
+    "es2015"
+  ]
+}
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index c5272f8..0aecb6e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,7 +1,6 @@
 node_modules
-package-lock.json
 npm-debug.log
 coverage
 test
 lib
-dist/*.js
+dist/*.js
\ No newline at end of file
diff --git a/README.md b/README.md
index 0f305d4..f3e4468 100644
--- a/README.md
+++ b/README.md
@@ -328,4 +328,4 @@ ecc.randomKey().then(privateWif =>  {
   var pubkey = ecc.privateToPublic(privateWif)
   console.log(pubkey)
 })
-```
+```
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index 1fe93d1..6c8f8a2 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "eosjs-ecc",
-  "version": "4.0.4",
+  "version": "4.0.5",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -112,9 +112,9 @@
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-      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.4.2.tgz",
-      "integrity": "sha512-9fJTDipQFvlfSVdD/JBtkiY0br9BtfvW2R8wo6CX/Ej2eMuV0gWPk1M67Mt3eggQvBqYW1FCEk8BN7WvGm/g5g==",
+      "version": "7.4.3",
+      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.4.3.tgz",
+      "integrity": "sha512-gxpEUhTS1sGA63EGQGuA+WESPR/6tz6ng7tSHFCmaTJK/cGK8y37cBTspX+U2xCAue2IQVvF6Z0oigmjwD8YGQ==",
       "dev": true
     },
     "@babel/template": {
@@ -129,16 +129,16 @@
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-      "version": "7.4.0",
-      "resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.4.0.tgz",
-      "integrity": "sha512-/DtIHKfyg2bBKnIN+BItaIlEg5pjAnzHOIQe5w+rHAw/rg9g0V7T4rqPX8BJPfW11kt3koyjAnTNwCzb28Y1PA==",
+      "version": "7.4.3",
+      "resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.4.3.tgz",
+      "integrity": "sha512-HmA01qrtaCwwJWpSKpA948cBvU5BrmviAief/b3AVw936DtcdsTexlbyzNuDnthwhOQ37xshn7hvQaEQk7ISYQ==",
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         "@babel/helper-function-name": "^7.1.0",
         "@babel/helper-split-export-declaration": "^7.4.0",
-        "@babel/parser": "^7.4.0",
+        "@babel/parser": "^7.4.3",
         "@babel/types": "^7.4.0",
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         "globals": "^11.1.0",
@@ -188,9 +188,9 @@
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-      "integrity": "sha1-cH92HgHa6eFvG8+TcDt4xwlmV5o=",
+      "version": "1.3.5",
+      "resolved": "https://registry.npmjs.org/JSONStream/-/JSONStream-1.3.5.tgz",
+      "integrity": "sha512-E+iruNOY8VV9s4JEbe1aNEm6MiszPRr/UfcHMz0TQh1BXSxHK+ASV1R6W4HpjBhSeS+54PIsAMCBmwD06LLsqQ==",
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@@ -204,9 +204,9 @@
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-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-4.0.13.tgz",
-      "integrity": "sha1-EFSVrlNh1pe9GVyCUZLhrX8lN4c=",
+      "version": "6.1.1",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.1.1.tgz",
+      "integrity": "sha512-jPTiwtOxaHNaAPg/dmrJ/beuzLRnXtB0kQPQ8JpotKJgTB6rX6c8mlf315941pyjBSaPg8NHXS9fhP4u17DpGA==",
       "dev": true
     },
     "acorn-dynamic-import": {
@@ -225,14 +225,6 @@
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         "acorn-walk": "^6.1.0",
         "xtend": "^4.0.1"
-      },
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-          "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.1.1.tgz",
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-          "dev": true
-        }
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@@ -378,26 +370,8 @@
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-          "dev": true
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-          "dev": true,
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@@ -419,9 +393,9 @@
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-      "integrity": "sha1-GdOGodntxufByF04iu28xW0zYC0=",
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/async-each/-/async-each-1.0.3.tgz",
+      "integrity": "sha512-z/WhQ5FPySLdvREByI2vZiTWwCnF0moMJ1hK9YQwDTHKh6I7/uSckMetoRGb5UBZPC1z0jlw+n/XCgjeH7y1AQ==",
       "dev": true
     },
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@@ -507,20 +481,6 @@
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-          "dev": true
-        }
       }
     },
     "babel-generator": {
@@ -1562,9 +1522,9 @@
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-      "resolved": "https://registry.npmjs.org/base-x/-/base-x-3.0.2.tgz",
-      "integrity": "sha1-v4c4YbdRQnm3lp80CSnquHwR0TA=",
+      "version": "3.0.5",
+      "resolved": "https://registry.npmjs.org/base-x/-/base-x-3.0.5.tgz",
+      "integrity": "sha512-C3picSgzPSLE+jW3tcBzJoGwitOtazb5B+5YmAxZm2ybmTi9LNgAtDO/jjVEBZwHoXmDBZ9m/IELj3elJVRBcA==",
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@@ -1572,8 +1532,7 @@
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-      "dev": true
+      "integrity": "sha512-ccav/yGvoa80BQDljCxsmmQ3Xvx60/UpBIij5QN21W3wBi/hhIC9OoO+KLpu9IJTS9j4DRVJ3aDDF9cMSoa2lw=="
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@@ -1590,9 +1549,9 @@
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-      "integrity": "sha1-muuabF6IY4qtFx4Wf1kAq+JINdA=",
+      "version": "1.13.1",
+      "resolved": "https://registry.npmjs.org/binary-extensions/-/binary-extensions-1.13.1.tgz",
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@@ -1614,9 +1573,9 @@
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-      "integrity": "sha1-wHshHHyVLsH479Uad+8NHTmQopI=",
+      "version": "1.1.11",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
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@@ -1656,9 +1615,9 @@
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-      "integrity": "sha1-j/CbCixCFxihBRwmCzLkj0QpOM4=",
+      "version": "1.11.3",
+      "resolved": "https://registry.npmjs.org/browser-resolve/-/browser-resolve-1.11.3.tgz",
+      "integrity": "sha512-exDi1BYWB/6raKHmDTCicQfTkqwN5fioMFV4j8BsfMU4R2DK/QfZfK7kOVkmWCNANf0snkBzqGqAJBao9gZMdQ==",
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@@ -1732,29 +1691,20 @@
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-      "resolved": "https://registry.npmjs.org/browserify-aes/-/browserify-aes-1.0.6.tgz",
-      "integrity": "sha1-Xncl297x/Vkw1OurSFZ85FHEigo=",
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/browserify-aes/-/browserify-aes-1.2.0.tgz",
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+      "dev": true,
       "requires": {
-        "buffer-xor": "^1.0.2",
+        "buffer-xor": "^1.0.3",
         "cipher-base": "^1.0.0",
         "create-hash": "^1.1.0",
-        "evp_bytestokey": "^1.0.0",
-        "inherits": "^2.0.1"
+        "evp_bytestokey": "^1.0.3",
+        "inherits": "^2.0.1",
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@@ -1778,14 +1728,6 @@
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@@ -1871,12 +1812,7 @@
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@@ -1937,9 +1873,9 @@
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@@ -2085,38 +2022,6 @@
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@@ -2142,18 +2047,18 @@
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@@ -2186,24 +2091,21 @@
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-      "dev": true,
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-      "version": "2.5.17",
-      "resolved": "https://registry.npmjs.org/vue-template-compiler/-/vue-template-compiler-2.5.17.tgz",
-      "integrity": "sha512-63uI4syCwtGR5IJvZM0LN5tVsahrelomHtCxvRkZPJ/Tf3ADm1U1wG6KWycK3qCfqR+ygM5vewUvmJ0REAYksg==",
+      "version": "2.6.10",
+      "resolved": "https://registry.npmjs.org/vue-template-compiler/-/vue-template-compiler-2.6.10.tgz",
+      "integrity": "sha512-jVZkw4/I/HT5ZMvRnhv78okGusqe0+qH2A0Em0Cp8aq78+NK9TII263CDVz2QXZsIT+yyV/gZc/j/vlwa+Epyg==",
       "dev": true,
       "requires": {
         "de-indent": "^1.0.2",
@@ -8925,9 +9208,9 @@
       "dev": true
     },
     "which": {
-      "version": "1.3.0",
-      "resolved": "https://registry.npmjs.org/which/-/which-1.3.0.tgz",
-      "integrity": "sha1-/wS9/AEO5UfXgL7DjhrBwnd9JTo=",
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/which/-/which-1.3.1.tgz",
+      "integrity": "sha512-HxJdYWq1MTIQbJ3nw0cqssHoTNU267KlrDuGZ1WYlxDStUtKUhOaJmh112/TZmHxxUfuJqPXSOm7tDyas0OSIQ==",
       "dev": true,
       "requires": {
         "isexe": "^2.0.0"
diff --git a/package.json b/package.json
index 2543580..4e29d86 100644
--- a/package.json
+++ b/package.json
@@ -29,14 +29,13 @@
     "url": "git://github.com/EOSIO/eosjs-ecc.git"
   },
   "dependencies": {
+    "assert": "1.4.1",
     "bigi": "1.4.2",
-    "browserify-aes": "1.0.6",
     "bs58": "4.0.1",
+    "buffer": "5.2.1",
     "bytebuffer": "5.0.1",
-    "create-hash": "1.1.3",
-    "create-hmac": "1.1.6",
-    "ecurve": "1.0.5",
-    "randombytes": "2.0.5"
+    "crypto-js": "3.1.9-1",
+    "ecurve": "1.0.5"
   },
   "license": "MIT",
   "devDependencies": {
@@ -49,11 +48,6 @@
     "istanbul": "0.4.5",
     "mocha": "5.2.0",
     "nyc": "13.3.0",
-    "uglify-js": "3.4.2"
-  },
-  "babel": {
-    "presets": [
-      "es2015"
-    ]
+    "uglify-es": "3.3.9"
   }
 }
diff --git a/src/aes.js b/src/aes.js
index 7e4307c..0d4073d 100644
--- a/src/aes.js
+++ b/src/aes.js
@@ -1,6 +1,6 @@
-const randomBytes = require('randombytes')
+const randomBytes = require('./randombytes')
 const ByteBuffer = require('bytebuffer')
-const crypto = require('browserify-aes')
+const CryptoJS = require('crypto-js');
 const assert = require('assert')
 const PublicKey = require('./key_public')
 const PrivateKey = require('./key_private')
@@ -122,9 +122,11 @@ function crypt(private_key, public_key, nonce, message, checksum) {
 function cryptoJsDecrypt(message, key, iv) {
     assert(message, "Missing cipher text")
     message = toBinaryBuffer(message)
-    const decipher = crypto.createDecipheriv('aes-256-cbc', key, iv)
-    // decipher.setAutoPadding(true)
-    message = Buffer.concat([decipher.update(message), decipher.final()])
+    message = CryptoJS.AES.decrypt(message, key, {
+        iv,
+        padding: CryptoJS.pad.Pkcs7,
+        mode: CryptoJS.mode.CBC
+    });
     return message
 }
 
@@ -138,9 +140,11 @@ function cryptoJsDecrypt(message, key, iv) {
 function cryptoJsEncrypt(message, key, iv) {
     assert(message, "Missing plain text")
     message = toBinaryBuffer(message)
-    const cipher = crypto.createCipheriv('aes-256-cbc', key, iv)
-    // cipher.setAutoPadding(true)
-    message = Buffer.concat([cipher.update(message), cipher.final()])
+    message = CryptoJS.AES.encrypt(message, key, {
+        iv,
+        padding: CryptoJS.pad.Pkcs7,
+        mode: CryptoJS.mode.CBC
+    });
     return message
 }
 
diff --git a/src/globals.js b/src/globals.js
new file mode 100644
index 0000000..a403c70
--- /dev/null
+++ b/src/globals.js
@@ -0,0 +1,4 @@
+if (typeof Buffer === 'undefined') {
+    global.Buffer = require('buffer').Buffer;
+}
+  
\ No newline at end of file
diff --git a/src/hash.js b/src/hash.js
index 4d91434..1f8b164 100644
--- a/src/hash.js
+++ b/src/hash.js
@@ -1,5 +1,4 @@
-const createHash = require('create-hash')
-const createHmac = require('create-hmac')
+const CryptoJS = require('crypto-js');
 
 /** @namespace hash */
 
@@ -8,7 +7,20 @@ const createHmac = require('create-hmac')
     @return {string|Buffer} - Buffer when resultEncoding is null, or string
 */
 function sha1(data, resultEncoding) {
-    return createHash('sha1').update(data).digest(resultEncoding)
+    if (Buffer.isBuffer(data)) {
+        data = CryptoJS.lib.WordArray.create(new Uint8Array(data));
+    }
+    
+    let result = CryptoJS.algo.SHA1.create()
+        .update(data)
+        .finalize()
+        .toString();
+    
+    if (!resultEncoding) {
+        result = Buffer.from(result, 'hex');
+    }
+    
+    return result;
 }
 
 /** @arg {string|Buffer} data
@@ -16,7 +28,20 @@ function sha1(data, resultEncoding) {
     @return {string|Buffer} - Buffer when resultEncoding is null, or string
 */
 function sha256(data, resultEncoding) {
-    return createHash('sha256').update(data).digest(resultEncoding)
+    if (Buffer.isBuffer(data)) {
+        data = CryptoJS.lib.WordArray.create(new Uint8Array(data));
+    }
+    
+    let result = CryptoJS.algo.SHA256.create()
+        .update(data)
+        .finalize()
+        .toString();
+    
+    if (!resultEncoding) {
+        result = Buffer.from(result, 'hex');
+    }
+    
+    return result;
 }
 
 /** @arg {string|Buffer} data
@@ -24,15 +49,60 @@ function sha256(data, resultEncoding) {
     @return {string|Buffer} - Buffer when resultEncoding is null, or string
 */
 function sha512(data, resultEncoding) {
-    return createHash('sha512').update(data).digest(resultEncoding)
+    if (Buffer.isBuffer(data)) {
+        data = CryptoJS.lib.WordArray.create(new Uint8Array(data));
+    }
+    
+    let result = CryptoJS.algo.SHA512.create()
+        .update(data)
+        .finalize()
+        .toString();
+    
+    if (!resultEncoding) {
+        result = Buffer.from(result, 'hex');
+    }
+    
+    return result;
 }
 
 function HmacSHA256(buffer, secret) {
-    return createHmac('sha256', secret).update(buffer).digest()
+    if (Buffer.isBuffer(buffer)) {
+        buffer = CryptoJS.lib.WordArray.create(new Uint8Array(buffer));
+    }
+    if (Buffer.isBuffer(secret)) {
+        secret = CryptoJS.lib.WordArray.create(new Uint8Array(secret));
+    }
+    
+    let result = CryptoJS.algo.HMAC.create(CryptoJS.algo.SHA256, secret)
+        .update(buffer)
+        .finalize()
+        .toString(CryptoJS.enc.Hex);
+    
+    result = Buffer.from(result, 'hex');
+    
+    return result;
 }
 
 function ripemd160(data) {
-    return createHash('rmd160').update(data).digest()
+    let temp = data;
+    if (!Buffer.isBuffer(data) && data instanceof Uint8Array) {
+        temp = CryptoJS.lib.WordArray.create(temp);
+    } else if (Buffer.isBuffer(data)) {
+        temp = CryptoJS.lib.WordArray.create(new Uint8Array(temp));
+    }
+    
+    let result = CryptoJS.algo.RIPEMD160.create()
+        .update(temp)
+        .finalize()
+        .toString();
+
+    result = Buffer.from(result, 'hex');
+
+    if (!Buffer.isBuffer(data) && data instanceof Uint8Array) {
+        result = new Uint8Array(result);
+    }
+    
+    return result;
 }
 
 // function hash160(buffer) {
diff --git a/src/index.js b/src/index.js
index d2d30c8..d0b3329 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,3 +1,4 @@
+require('./globals');
 const commonApi = require('./api_common')
 const objectApi = require('./api_object')
 
diff --git a/src/key_private.js b/src/key_private.js
index 1ca8c71..0e4d059 100644
--- a/src/key_private.js
+++ b/src/key_private.js
@@ -7,7 +7,7 @@ const assert = require('assert');
 const hash = require('./hash');
 const PublicKey = require('./key_public');
 const keyUtils = require('./key_utils');
-const createHash = require('create-hash')
+const CryptoJS = require('crypto-js');
 const promiseAsync = require('./promise-async')
 
 const G = secp256k1.G
@@ -114,7 +114,11 @@ function PrivateKey(d) {
     */
     function getChildKey(name) {
       // console.error('WARNING: getChildKey untested against eosd'); // no eosd impl yet
-      const index = createHash('sha256').update(toBuffer()).update(name).digest()
+      const index = CryptoJS.algo.SHA256.create()
+        .update(CryptoJS.lib.WordArray.create(toBuffer()))
+        .update(name)
+        .finalize()
+        .toString();
       return PrivateKey(index)
     }
 
diff --git a/src/key_utils.js b/src/key_utils.js
index 6c4d121..ddb1f40 100644
--- a/src/key_utils.js
+++ b/src/key_utils.js
@@ -1,8 +1,8 @@
 const base58 = require('bs58')
 const assert = require('assert')
-const randomBytes = require('randombytes');
+const randomBytes = require('./randombytes')
 
-const hash = require('./hash');
+const hash = require('./hash')
 
 module.exports = {
     random32ByteBuffer,
diff --git a/src/randombytes.js b/src/randombytes.js
new file mode 100644
index 0000000..14f7881
--- /dev/null
+++ b/src/randombytes.js
@@ -0,0 +1,27 @@
+function getRandomValues(byteArray) {
+    for (let i = 0; i < byteArray.length; i++) {
+      byteArray[i] = Math.floor(256 * Math.random());
+    }
+};
+function randomBytes(size, cb) {
+    // phantomjs needs to throw
+    if (size > 65536) {throw new Error('requested too many random bytes');}
+    // in case browserify  isn't using the Uint8Array version
+    var rawBytes = new global.Uint8Array(size);
+  
+    // This will not work in older browsers.
+    // See https://developer.mozilla.org/en-US/docs/Web/API/window.crypto.getRandomValues
+    if (size > 0) {
+      // getRandomValues fails on IE if size == 0
+      getRandomValues(rawBytes);
+    }
+    // XXX: phantomjs doesn't like a buffer being passed here
+    var bytes = Buffer.from(rawBytes.buffer);
+  
+    if (cb) {
+      cb(bytes);
+    }
+    return bytes;
+};
+module.exports = randomBytes;
+  
\ No newline at end of file