diff --git a/.gitignore b/.gitignore
index d58e374..e68e282 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@ node_modules
 /lib
 package-lock.json
 .DS_Store
+dist
diff --git a/README.md b/README.md
index b669093..458c6fd 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 # DIDComm-crypto-js
-Javascript (written in typescript) version of the cryptographic envelope of DIDComm. This library is built for any javascript environment that needs to . It is built on libsodium-js and follows the specs documented in the [docs](/docs/README.md) folder.
+Javascript (written in typescript) version of the cryptographic envelope of DIDComm. This library is built for any javascript environment that needs to . It is built on [TweetNaCl.js](https://tweetnacl.js.org/) and follows the specs documented in the [docs](/docs/README.md) folder (with the exception of choice of encryption algorithm).
+
+This version changes the use of `chacha20poly1305_ietf` to `xsalsa20-poly1305` (aka `secretbox`). The primary reason is to remove the reliance on libsodium.js which brings the size of a distribution over what can realistically be expected to be added to web clients.
 
 ## installation
 This package is currently not available on NPM: It will be added to npm under the package name `DIDComm-crypto-js` when a CI/CD platform can be added to publish it.
@@ -15,7 +17,6 @@ pack_auth_msg_for_recipients(message, recipientKeyList, senderKeyPair, nonRepudi
 
 ```typescript
     const didcomm = new DIDComm()
-    await didcomm.Ready
     const alice = await didcomm.generateKeyPair()
     const bob = await didcomm.generateKeyPair()
     const message = 'I AM A PRIVATE MESSAGE'
@@ -28,7 +29,6 @@ To Encrypt a message for a recipient and sign the message using a non-repudiable
 
 ```typescript
     const didcomm = new DIDComm()
-    await didcomm.Ready
     const alice = await didcomm.generateKeyPair()
     const bob = await didcomm.generateKeyPair()
     const message = 'I AM A PRIVATE MESSAGE'
@@ -42,7 +42,6 @@ For privacy reasons or to meet the principle of least information, it may be nec
 
 ```typescript
     const didcomm = new DIDComm()
-    await didcomm.Ready
     const bob = await didcomm.generateKeyPair()
     const message = JSON.stringify({
         "@type": "did:example:1234567890;spec/test",
@@ -58,7 +57,6 @@ In very specific use cases like the invitation protocol or incredibly short live
 
 ```typescript
     const didcomm = new DIDComm()
-    await didcomm.Ready
     const bob = await didcomm.generateKeyPair()
     const message = "I AM A PUBLIC MESSAGE"
     const packedMsg = await didcomm.pack_nonrepudiable_msg_for_anyone(message, bob)
diff --git a/package-lock.json b/package-lock.json
index faf77d4..2026dd5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
-  "name": "encryption-envelope-js",
-  "version": "1.1.4",
+  "name": "DIDComm-js",
+  "version": "0.6.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -14,27 +14,36 @@
       }
     },
     "@babel/core": {
-      "version": "7.4.5",
-      "resolved": "https://registry.npmjs.org/@babel/core/-/core-7.4.5.tgz",
-      "integrity": "sha512-OvjIh6aqXtlsA8ujtGKfC7LYWksYSX8yQcM8Ay3LuvVeQ63lcOKgoZWVqcpFwkd29aYU9rVx7jxhfhiEDV9MZA==",
+      "version": "7.5.5",
+      "resolved": "https://registry.npmjs.org/@babel/core/-/core-7.5.5.tgz",
+      "integrity": "sha512-i4qoSr2KTtce0DmkuuQBV4AuQgGPUcPXMr9L5MyYAtk06z068lQ10a4O009fe5OB/DfNV+h+qqT7ddNV8UnRjg==",
       "dev": true,
       "requires": {
-        "@babel/code-frame": "^7.0.0",
-        "@babel/generator": "^7.4.4",
-        "@babel/helpers": "^7.4.4",
-        "@babel/parser": "^7.4.5",
+        "@babel/code-frame": "^7.5.5",
+        "@babel/generator": "^7.5.5",
+        "@babel/helpers": "^7.5.5",
+        "@babel/parser": "^7.5.5",
         "@babel/template": "^7.4.4",
-        "@babel/traverse": "^7.4.5",
-        "@babel/types": "^7.4.4",
+        "@babel/traverse": "^7.5.5",
+        "@babel/types": "^7.5.5",
         "convert-source-map": "^1.1.0",
         "debug": "^4.1.0",
         "json5": "^2.1.0",
-        "lodash": "^4.17.11",
+        "lodash": "^4.17.13",
         "resolve": "^1.3.2",
         "semver": "^5.4.1",
         "source-map": "^0.5.0"
       },
       "dependencies": {
+        "@babel/code-frame": {
+          "version": "7.5.5",
+          "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.5.5.tgz",
+          "integrity": "sha512-27d4lZoomVyo51VegxI20xZPuSHusqbQag/ztrBC7wegWoQ1nLREPVSKSW8byhTlzTKyNE4ifaTA6lCp7JjpFw==",
+          "dev": true,
+          "requires": {
+            "@babel/highlight": "^7.0.0"
+          }
+        },
         "debug": {
           "version": "4.1.1",
           "resolved": "https://registry.npmjs.org/debug/-/debug-4.1.1.tgz",
@@ -59,14 +68,14 @@
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-      "version": "7.4.4",
-      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.4.4.tgz",
-      "integrity": "sha512-53UOLK6TVNqKxf7RUh8NE851EHRxOOeVXKbK2bivdb+iziMyk03Sr4eaE9OELCbyZAAafAKPDwF2TPUES5QbxQ==",
+      "version": "7.5.5",
+      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.5.5.tgz",
+      "integrity": "sha512-ETI/4vyTSxTzGnU2c49XHv2zhExkv9JHLTwDAFz85kmcwuShvYG2H08FwgIguQf4JC75CBnXAUM5PqeF4fj0nQ==",
       "dev": true,
       "requires": {
-        "@babel/types": "^7.4.4",
+        "@babel/types": "^7.5.5",
         "jsesc": "^2.5.1",
-        "lodash": "^4.17.11",
+        "lodash": "^4.17.13",
         "source-map": "^0.5.0",
         "trim-right": "^1.0.1"
       },
@@ -115,14 +124,14 @@
       }
     },
     "@babel/helpers": {
-      "version": "7.4.4",
-      "resolved": "https://registry.npmjs.org/@babel/helpers/-/helpers-7.4.4.tgz",
-      "integrity": "sha512-igczbR/0SeuPR8RFfC7tGrbdTbFL3QTvH6D+Z6zNxnTe//GyqmtHmDkzrqDmyZ3eSwPqB/LhyKoU5DXsp+Vp2A==",
+      "version": "7.5.5",
+      "resolved": "https://registry.npmjs.org/@babel/helpers/-/helpers-7.5.5.tgz",
+      "integrity": "sha512-nRq2BUhxZFnfEn/ciJuhklHvFOqjJUD5wpx+1bxUF2axL9C+v4DE/dmp5sT2dKnpOs4orZWzpAZqlCy8QqE/7g==",
       "dev": true,
       "requires": {
         "@babel/template": "^7.4.4",
-        "@babel/traverse": "^7.4.4",
-        "@babel/types": "^7.4.4"
+        "@babel/traverse": "^7.5.5",
+        "@babel/types": "^7.5.5"
       }
     },
     "@babel/highlight": {
@@ -145,9 +154,9 @@
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-      "version": "7.4.5",
-      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.4.5.tgz",
-      "integrity": "sha512-9mUqkL1FF5T7f0WDFfAoDdiMVPWsdD1gZYzSnaXsxUCUqzuch/8of9G3VUSNiZmMBoRxT3neyVsqeiL/ZPcjew==",
+      "version": "7.5.5",
+      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.5.5.tgz",
+      "integrity": "sha512-E5BN68cqR7dhKan1SfqgPGhQ178bkVKpXTPEXnFJBrEt8/DKRZlybmy+IgYLTeN7tp1R5Ccmbm2rBk17sHYU3g==",
       "dev": true
     },
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@@ -171,22 +180,31 @@
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-      "resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.4.5.tgz",
-      "integrity": "sha512-Vc+qjynwkjRmIFGxy0KYoPj4FdVDxLej89kMHFsWScq999uX+pwcX4v9mWRjW0KcAYTPAuVQl2LKP1wEVLsp+A==",
+      "version": "7.5.5",
+      "resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.5.5.tgz",
+      "integrity": "sha512-MqB0782whsfffYfSjH4TM+LMjrJnhCNEDMDIjeTpl+ASaUvxcjoiVCo/sM1GhS1pHOXYfWVCYneLjMckuUxDaQ==",
       "dev": true,
       "requires": {
-        "@babel/code-frame": "^7.0.0",
-        "@babel/generator": "^7.4.4",
+        "@babel/code-frame": "^7.5.5",
+        "@babel/generator": "^7.5.5",
         "@babel/helper-function-name": "^7.1.0",
         "@babel/helper-split-export-declaration": "^7.4.4",
-        "@babel/parser": "^7.4.5",
-        "@babel/types": "^7.4.4",
+        "@babel/parser": "^7.5.5",
+        "@babel/types": "^7.5.5",
         "debug": "^4.1.0",
         "globals": "^11.1.0",
-        "lodash": "^4.17.11"
+        "lodash": "^4.17.13"
       },
       "dependencies": {
+        "@babel/code-frame": {
+          "version": "7.5.5",
+          "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.5.5.tgz",
+          "integrity": "sha512-27d4lZoomVyo51VegxI20xZPuSHusqbQag/ztrBC7wegWoQ1nLREPVSKSW8byhTlzTKyNE4ifaTA6lCp7JjpFw==",
+          "dev": true,
+          "requires": {
+            "@babel/highlight": "^7.0.0"
+          }
+        },
         "debug": {
           "version": "4.1.1",
           "resolved": "https://registry.npmjs.org/debug/-/debug-4.1.1.tgz",
@@ -205,13 +223,13 @@
       }
     },
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-      "version": "7.4.4",
-      "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.4.4.tgz",
-      "integrity": "sha512-dOllgYdnEFOebhkKCjzSVFqw/PmmB8pH6RGOWkY4GsboQNd47b1fBThBSwlHAq9alF9vc1M3+6oqR47R50L0tQ==",
+      "version": "7.5.5",
+      "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.5.5.tgz",
+      "integrity": "sha512-s63F9nJioLqOlW3UkyMd+BYhXt44YuaFm/VV0VwuteqjYwRrObkU7ra9pY4wAJR3oXi8hJrMcrcJdO/HH33vtw==",
       "dev": true,
       "requires": {
         "esutils": "^2.0.2",
-        "lodash": "^4.17.11",
+        "lodash": "^4.17.13",
         "to-fast-properties": "^2.0.0"
       }
     },
@@ -466,15 +484,19 @@
       }
     },
     "@types/jest": {
-      "version": "23.3.14",
-      "resolved": "https://registry.npmjs.org/@types/jest/-/jest-23.3.14.tgz",
-      "integrity": "sha512-Q5hTcfdudEL2yOmluA1zaSyPbzWPmJ3XfSWeP3RyoYvS9hnje1ZyagrZOuQ6+1nQC1Gw+7gap3pLNL3xL6UBug==",
-      "dev": true
+      "version": "24.0.15",
+      "resolved": "https://registry.npmjs.org/@types/jest/-/jest-24.0.15.tgz",
+      "integrity": "sha512-MU1HIvWUme74stAoc3mgAi+aMlgKOudgEvQDIm1v4RkrDudBh1T+NFp5sftpBAdXdx1J0PbdpJ+M2EsSOi1djA==",
+      "dev": true,
+      "requires": {
+        "@types/jest-diff": "*"
+      }
     },
-    "@types/libsodium-wrappers": {
-      "version": "0.7.5",
-      "resolved": "https://registry.npmjs.org/@types/libsodium-wrappers/-/libsodium-wrappers-0.7.5.tgz",
-      "integrity": "sha512-CfxNQj3+fUwGhV20/yRoiMRjLN6+3cDRAjN2eQ0XKgq/IBhvROsbWxPa34JIiMKGdfHKy92OaMnViyoWw2Nrkg=="
+    "@types/jest-diff": {
+      "version": "20.0.1",
+      "resolved": "https://registry.npmjs.org/@types/jest-diff/-/jest-diff-20.0.1.tgz",
+      "integrity": "sha512-yALhelO3i0hqZwhjtcr6dYyaLoCHbAMshwtj6cGxTvHZAKXHsYGdff6E8EPw3xLKY0ELUTQ69Q1rQiJENnccMA==",
+      "dev": true
     },
     "@types/stack-utils": {
       "version": "1.0.1",
@@ -488,6 +510,194 @@
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       "dev": true
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+        "@webassemblyjs/helper-wasm-bytecode": "1.8.5",
+        "@webassemblyjs/wast-parser": "1.8.5"
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+      "integrity": "sha512-CNmdbwQMBjwr9Gsmohvm0pbL954tJrNzf6gWL3K+QMQf00PF7ERGrEiLgjuU3mKreLC2MeGhUsNV9ybTbLgd3w==",
+      "dev": true
+    },
     "validate-npm-package-license": {
       "version": "3.0.4",
       "resolved": "https://registry.npmjs.org/validate-npm-package-license/-/validate-npm-package-license-3.0.4.tgz",
@@ -4983,6 +6514,12 @@
         "extsprintf": "^1.2.0"
       }
     },
+    "vm-browserify": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/vm-browserify/-/vm-browserify-1.1.0.tgz",
+      "integrity": "sha512-iq+S7vZJE60yejDYM0ek6zg308+UZsdtPExWP9VZoCFCz1zkJoXFnAX7aZfd/ZwrkidzdUZL0C/ryW+JwAiIGw==",
+      "dev": true
+    },
     "w3c-hr-time": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/w3c-hr-time/-/w3c-hr-time-1.0.1.tgz",
@@ -5001,12 +6538,176 @@
         "makeerror": "1.0.x"
       }
     },
+    "watchpack": {
+      "version": "1.6.0",
+      "resolved": "https://registry.npmjs.org/watchpack/-/watchpack-1.6.0.tgz",
+      "integrity": "sha512-i6dHe3EyLjMmDlU1/bGQpEw25XSjkJULPuAVKCbNRefQVq48yXKUpwg538F7AZTf9kyr57zj++pQFltUa5H7yA==",
+      "dev": true,
+      "requires": {
+        "chokidar": "^2.0.2",
+        "graceful-fs": "^4.1.2",
+        "neo-async": "^2.5.0"
+      }
+    },
     "webidl-conversions": {
       "version": "4.0.2",
       "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-4.0.2.tgz",
       "integrity": "sha512-YQ+BmxuTgd6UXZW3+ICGfyqRyHXVlD5GtQr5+qjiNW7bF0cqrzX500HVXPBOvgXb5YnzDd+h0zqyv61KUD7+Sg==",
       "dev": true
     },
+    "webpack": {
+      "version": "4.36.1",
+      "resolved": "https://registry.npmjs.org/webpack/-/webpack-4.36.1.tgz",
+      "integrity": "sha512-Ej01/N9W8DVyhEpeQnbUdGvOECw0L46FxS12cCOs8gSK7bhUlrbHRnWkjiXckGlHjUrmL89kDpTRIkUk6Y+fKg==",
+      "dev": true,
+      "requires": {
+        "@webassemblyjs/ast": "1.8.5",
+        "@webassemblyjs/helper-module-context": "1.8.5",
+        "@webassemblyjs/wasm-edit": "1.8.5",
+        "@webassemblyjs/wasm-parser": "1.8.5",
+        "acorn": "^6.2.0",
+        "ajv": "^6.1.0",
+        "ajv-keywords": "^3.1.0",
+        "chrome-trace-event": "^1.0.0",
+        "enhanced-resolve": "^4.1.0",
+        "eslint-scope": "^4.0.0",
+        "json-parse-better-errors": "^1.0.2",
+        "loader-runner": "^2.3.0",
+        "loader-utils": "^1.1.0",
+        "memory-fs": "~0.4.1",
+        "micromatch": "^3.1.8",
+        "mkdirp": "~0.5.0",
+        "neo-async": "^2.5.0",
+        "node-libs-browser": "^2.0.0",
+        "schema-utils": "^1.0.0",
+        "tapable": "^1.1.0",
+        "terser-webpack-plugin": "^1.1.0",
+        "watchpack": "^1.5.0",
+        "webpack-sources": "^1.3.0"
+      },
+      "dependencies": {
+        "acorn": {
+          "version": "6.2.0",
+          "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.2.0.tgz",
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+          "dev": true
+        }
+      }
+    },
+    "webpack-cli": {
+      "version": "3.3.6",
+      "resolved": "https://registry.npmjs.org/webpack-cli/-/webpack-cli-3.3.6.tgz",
+      "integrity": "sha512-0vEa83M7kJtxK/jUhlpZ27WHIOndz5mghWL2O53kiDoA9DIxSKnfqB92LoqEn77cT4f3H2cZm1BMEat/6AZz3A==",
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+      "requires": {
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+        "cross-spawn": "6.0.5",
+        "enhanced-resolve": "4.1.0",
+        "findup-sync": "3.0.0",
+        "global-modules": "2.0.0",
+        "import-local": "2.0.0",
+        "interpret": "1.2.0",
+        "loader-utils": "1.2.3",
+        "supports-color": "6.1.0",
+        "v8-compile-cache": "2.0.3",
+        "yargs": "13.2.4"
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+      "dependencies": {
+        "camelcase": {
+          "version": "5.3.1",
+          "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-5.3.1.tgz",
+          "integrity": "sha512-L28STB170nwWS63UjtlEOE3dldQApaJXZkOI1uMFfzf3rRuPegHaHesyee+YxQ+W6SvRDQV6UrdOdRiR153wJg==",
+          "dev": true
+        },
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+          "version": "5.0.0",
+          "resolved": "https://registry.npmjs.org/cliui/-/cliui-5.0.0.tgz",
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+          "dev": true,
+          "requires": {
+            "string-width": "^3.1.0",
+            "strip-ansi": "^5.2.0",
+            "wrap-ansi": "^5.1.0"
+          }
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+        "get-caller-file": {
+          "version": "2.0.5",
+          "resolved": "https://registry.npmjs.org/get-caller-file/-/get-caller-file-2.0.5.tgz",
+          "integrity": "sha512-DyFP3BM/3YHTQOCUL/w0OZHR0lpKeGrxotcHWcqNEdnltqFwXVfhEBQ94eIo34AfQpo0rGki4cyIiftY06h2Fg==",
+          "dev": true
+        },
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+          "version": "3.1.0",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-3.1.0.tgz",
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+          "dev": true,
+          "requires": {
+            "emoji-regex": "^7.0.1",
+            "is-fullwidth-code-point": "^2.0.0",
+            "strip-ansi": "^5.1.0"
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+        "supports-color": {
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+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-6.1.0.tgz",
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+          "dev": true,
+          "requires": {
+            "has-flag": "^3.0.0"
+          }
+        },
+        "wrap-ansi": {
+          "version": "5.1.0",
+          "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-5.1.0.tgz",
+          "integrity": "sha512-QC1/iN/2/RPVJ5jYK8BGttj5z83LmSKmvbvrXPNCLZSEb32KKVDJDl/MOt2N01qU2H/FkzEa9PKto1BqDjtd7Q==",
+          "dev": true,
+          "requires": {
+            "ansi-styles": "^3.2.0",
+            "string-width": "^3.0.0",
+            "strip-ansi": "^5.0.0"
+          }
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+        "yargs": {
+          "version": "13.2.4",
+          "resolved": "https://registry.npmjs.org/yargs/-/yargs-13.2.4.tgz",
+          "integrity": "sha512-HG/DWAJa1PAnHT9JAhNa8AbAv3FPaiLzioSjCcmuXXhP8MlpHO5vwls4g4j6n30Z74GVQj8Xa62dWVx1QCGklg==",
+          "dev": true,
+          "requires": {
+            "cliui": "^5.0.0",
+            "find-up": "^3.0.0",
+            "get-caller-file": "^2.0.1",
+            "os-locale": "^3.1.0",
+            "require-directory": "^2.1.1",
+            "require-main-filename": "^2.0.0",
+            "set-blocking": "^2.0.0",
+            "string-width": "^3.0.0",
+            "which-module": "^2.0.0",
+            "y18n": "^4.0.0",
+            "yargs-parser": "^13.1.0"
+          }
+        },
+        "yargs-parser": {
+          "version": "13.1.1",
+          "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-13.1.1.tgz",
+          "integrity": "sha512-oVAVsHz6uFrg3XQheFII8ESO2ssAf9luWuAd6Wexsu4F3OtIW0o8IribPXYrD4WC24LWtPrJlGy87y5udK+dxQ==",
+          "dev": true,
+          "requires": {
+            "camelcase": "^5.0.0",
+            "decamelize": "^1.2.0"
+          }
+        }
+      }
+    },
+    "webpack-sources": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/webpack-sources/-/webpack-sources-1.3.0.tgz",
+      "integrity": "sha512-OiVgSrbGu7NEnEvQJJgdSFPl2qWKkWq5lHMhgiToIiN9w34EBnjYzSYs+VbL5KoYiLNtFFa7BZIKxRED3I32pA==",
+      "dev": true,
+      "requires": {
+        "source-list-map": "^2.0.0",
+        "source-map": "~0.6.1"
+      }
+    },
     "whatwg-encoding": {
       "version": "1.0.5",
       "resolved": "https://registry.npmjs.org/whatwg-encoding/-/whatwg-encoding-1.0.5.tgz",
@@ -5054,6 +6755,15 @@
       "integrity": "sha1-o9XabNXAvAAI03I0u68b7WMFkQc=",
       "dev": true
     },
+    "worker-farm": {
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/worker-farm/-/worker-farm-1.7.0.tgz",
+      "integrity": "sha512-rvw3QTZc8lAxyVrqcSGVm5yP/IJ2UcB3U0graE3LCFoZ0Yn2x4EoVSqJKdB/T5M+FLcRPjz4TDacRf3OCfNUzw==",
+      "dev": true,
+      "requires": {
+        "errno": "~0.1.7"
+      }
+    },
     "wrap-ansi": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-2.1.0.tgz",
@@ -5133,12 +6843,24 @@
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       "dev": true
     },
+    "xtend": {
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.2.tgz",
+      "integrity": "sha512-LKYU1iAXJXUgAXn9URjiu+MWhyUXHsvfp7mcuYm9dSUKK0/CjtrUwFAxD82/mCWbtLsGjFIad0wIsod4zrTAEQ==",
+      "dev": true
+    },
     "y18n": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/y18n/-/y18n-4.0.0.tgz",
       "integrity": "sha512-r9S/ZyXu/Xu9q1tYlpsLIsa3EeLXXk0VwlxqTcFRfg9EhMW+17kbt9G0NrgCmhGb5vT2hyhJZLfDGx+7+5Uj/w==",
       "dev": true
     },
+    "yallist": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.0.3.tgz",
+      "integrity": "sha512-S+Zk8DEWE6oKpV+vI3qWkaK+jSbIK86pCwe2IF/xwIpQ8jEuxpw9NyaGjmp9+BoJv5FV2piqCDcoCtStppiq2A==",
+      "dev": true
+    },
     "yargs": {
       "version": "12.0.5",
       "resolved": "https://registry.npmjs.org/yargs/-/yargs-12.0.5.tgz",
diff --git a/package.json b/package.json
index e91e365..7057dfa 100644
--- a/package.json
+++ b/package.json
@@ -18,10 +18,11 @@
   },
   "license": "Apache-2.0",
   "dependencies": {
-    "@types/libsodium-wrappers": "^0.7.5",
     "base-58": "0.0.1",
-    "libsodium": "^0.7.3",
-    "libsodium-wrappers": "^0.7.3"
+    "ed2curve-esm": "^0.3.0-alpha-1",
+    "tweetnacl": "^1.0.1",
+    "tweetnacl-sealedbox-js": "^1.1.0",
+    "tweetnacl-util": "^0.15.0"
   },
   "main": "lib/index.js",
   "types": "lib/index.d.ts",
@@ -35,11 +36,13 @@
     "version": "git add -A src"
   },
   "devDependencies": {
-    "@types/jest": "^23.3.14",
+    "@types/jest": "^24.0.15",
     "jest": "^24.8.0",
-    "ts-jest": "^23.10.4",
-    "tslint": "^5.11.0",
-    "tslint-config-prettier": "^1.16.0",
-    "typescript": "^3.1.6"
+    "ts-jest": "^24.0.2",
+    "tslint": "^5.18.0",
+    "tslint-config-prettier": "^1.18.0",
+    "typescript": "^3.5.3",
+    "webpack": "^4.36.1",
+    "webpack-cli": "^3.3.6"
   }
 }
diff --git a/src/global.d.ts b/src/global.d.ts
index d849f98..bd5d565 100644
--- a/src/global.d.ts
+++ b/src/global.d.ts
@@ -1 +1,5 @@
-declare module 'base-58'
\ No newline at end of file
+declare module 'base-58'
+declare module 'tweetnacl-sealedbox-js' {
+  export function seal(buffer: Uint8Array, publicKey: Uint8Array): Uint8Array
+  export function open(sealed: Uint8Array, publicKey: Uint8Array, secretKey: Uint8Array): Uint8Array
+}
\ No newline at end of file
diff --git a/src/index.test.ts b/src/index.test.ts
index e0a04fc..e8d1d97 100644
--- a/src/index.test.ts
+++ b/src/index.test.ts
@@ -2,18 +2,9 @@ import { DIDComm } from '.'
 
 describe('pack and unpack', () => {
 
-    it('is an async constructor', async () => {
-        const didcomm = new DIDComm()
-        const unresolvedVal = didcomm.Ready
-        expect(unresolvedVal).toBeInstanceOf(Promise)
-        const val = await didcomm.Ready
-        expect(val).toEqual(undefined)
-    })
-
     it('it packs and unpacks a message with repudiable authentication', async () => {
         // Prep test suite
         const didcomm = new DIDComm()
-        await didcomm.Ready
         const alice = await didcomm.generateKeyPair()
         const bob = await didcomm.generateKeyPair()
         const message = 'I AM A PRIVATE MESSAGE'
@@ -26,7 +17,6 @@ describe('pack and unpack', () => {
     it('it packs and unpacks a message with nonrepudiable authentication', async () => {
         // Prep test suite
         const didcomm = new DIDComm()
-        await didcomm.Ready
         const alice = await didcomm.generateKeyPair()
         const bob = await didcomm.generateKeyPair()
         const message = 'I AM A PRIVATE MESSAGE'
@@ -40,7 +30,6 @@ describe('pack and unpack', () => {
     it('it checks that a packed message with alg still gets unpacked properly', async () => {
         // Prep test suite
         const didcomm = new DIDComm()
-        await didcomm.Ready
         const alice = await didcomm.generateKeyPair()
         const bob = await didcomm.generateKeyPair()
         const message = JSON.stringify({
@@ -57,7 +46,6 @@ describe('pack and unpack', () => {
     it('it checks that an anonymous packed message can be unpacked', async () => {
         // Prep test suite
         const didcomm = new DIDComm()
-        await didcomm.Ready
         const bob = await didcomm.generateKeyPair()
         const message = JSON.stringify({
             "@type": "did:example:1234567890;spec/test",
@@ -73,7 +61,6 @@ describe('pack and unpack', () => {
     it('it checks that an anonymous packed message can be unpacked', async () => {
         // Prep test suite
         const didcomm = new DIDComm()
-        await didcomm.Ready
         const bob = await didcomm.generateKeyPair()
         const message = "I AM A PUBLIC MESSAGE"
 
@@ -81,6 +68,5 @@ describe('pack and unpack', () => {
         const unpackedMsg = await didcomm.unpackMessage(packedMsg, bob)
         expect(unpackedMsg.message).toEqual(message)
         expect(unpackedMsg.recipientKey).toEqual(null)
-        console.log(unpackedMsg)
     })
 })
diff --git a/src/index.ts b/src/index.ts
index 8b8d7b3..5a5a3e2 100755
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,5 +1,8 @@
 import Base58 = require('base-58')
-import sodium = require('libsodium-wrappers')
+import * as nacl from 'tweetnacl'
+import naclutil from 'tweetnacl-util'
+import { convertKeyPair, convertPublicKey } from 'ed2curve-esm'
+import * as sealedbox from 'tweetnacl-sealedbox-js'
 
 interface IUnpackedMsg {
     message: string,
@@ -14,10 +17,9 @@ interface JWSUnpacked {
     verified: boolean
 }
 
-export class DIDComm {
+const JWS_REGEX = /^([a-zA-Z0-9_-]+)\.([a-zA-Z0-9_-]+)\.([a-zA-Z0-9_-]+)$/
 
-    public readonly Ready: Promise<undefined>
-    private sodium: any
+export class DIDComm {
 
     /**
      * Creates a new PackUnpack object. The returned object contains a .Ready property:
@@ -31,23 +33,14 @@ export class DIDComm {
      * }())
      */
     constructor() {
-        this.Ready = new Promise(async (res, rej) => {
-            try {
-                await sodium.ready
-                this.sodium = sodium
-                res()
-            } catch (err) {
-                rej(err)
-            }
-        })
     }
 
     /**
-    * Uses libsodium to generate a key pair, you may pass these keys into the pack/unpack functions
+    * Uses tweetnacl to generate a key pair, you may pass these keys into the pack/unpack functions
     * @
     */
-    public async generateKeyPair(): Promise<sodium.KeyPair> {
-        return this.sodium.crypto_sign_keypair()
+    public async generateKeyPair(): Promise<nacl.SignKeyPair> {
+        return nacl.sign.keyPair()
     }
 
     /**
@@ -62,7 +55,7 @@ export class DIDComm {
      *          if nonRepudiable == false returns the msg encrypted as follows JWE(msg)
      */
     public async pack_auth_msg_for_recipients(
-        msg: string, recipientKeys: Uint8Array[], senderKeys: sodium.KeyPair, nonRepudiable: Boolean = false) : Promise<string> {
+        msg: string, recipientKeys: Uint8Array[], senderKeys: nacl.SignKeyPair, nonRepudiable: Boolean = false) : Promise<string> {
         if (nonRepudiable) {
             //return JWE(JWS(msg))
             let signedMsg = await this.signContent(msg, senderKeys);
@@ -91,7 +84,7 @@ export class DIDComm {
      * @param senderKeys the key used to sign the 
      * @returns a compact JWS
      */
-    public async pack_nonrepudiable_msg_for_anyone(msg: string, senderKeys: sodium.KeyPair) : Promise<string> {
+    public async pack_nonrepudiable_msg_for_anyone(msg: string, senderKeys: nacl.SignKeyPair) : Promise<string> {
         return this.signContent(msg, senderKeys);
     }
 
@@ -100,10 +93,8 @@ export class DIDComm {
      * @param encMsg message to be decrypted
      * @param toKeys key pair of party decrypting the message
      */
-    public async unpackMessage(packedMsg: string, toKeys: sodium.KeyPair): Promise<IUnpackedMsg> {
-        try {
-            return await this.unpackEncrypted(packedMsg, toKeys)
-        } catch (err) {
+    public async unpackMessage(packedMsg: string, toKeys: nacl.SignKeyPair): Promise<IUnpackedMsg> {
+        if (packedMsg.match(JWS_REGEX)) {
             let jws_checked = this.verifyContent(packedMsg)
             return {
                 message: jws_checked.content,
@@ -111,6 +102,8 @@ export class DIDComm {
                 senderKey: jws_checked.verkey,
                 nonRepudiableVerification: jws_checked.verified
             }
+        } else {
+            return await this.unpackEncrypted(packedMsg, toKeys)
         }
     }
 
@@ -122,34 +115,27 @@ export class DIDComm {
      * @param fromKeys keypair of person encrypting message
      */
     private async packMessage(
-        msg: string, recipientKeys: Uint8Array[], fromKeys: sodium.KeyPair | null = null): Promise<string> {
+        msg: string, recipientKeys: Uint8Array[], fromKeys: nacl.SignKeyPair | null = null): Promise<string> {
 
-        let [recipsJson, cek] = this.prepareRecipientKeys(recipientKeys, fromKeys)
-        let recipsB64 = this.b64url(recipsJson)
+        let {data, cek} = this.prepareRecipientKeys(recipientKeys, fromKeys)
+        let recipsB64 = this.b64url(data)
 
-        let [ciphertext, tag, iv] = this.encryptPlaintext(msg, recipsB64, cek)
+        let [ciphertext, iv] = this.encryptPlaintext(naclutil.decodeUTF8(msg), cek)
 
         return JSON.stringify({
             ciphertext: this.b64url(ciphertext),
             iv: this.b64url(iv),
-            protected: recipsB64,
-            tag: this.b64url(tag),
+            protected: recipsB64
         })
     }
 
-    private async unpackEncrypted(encMsg: string, toKeys: sodium.KeyPair): Promise<IUnpackedMsg> {
+    private async unpackEncrypted(encMsg: string, toKeys: nacl.SignKeyPair): Promise<IUnpackedMsg> {
         let wrapper
         if (typeof encMsg === 'string') {
             wrapper = JSON.parse(encMsg)
         } else {
             wrapper = encMsg
         }
-        if (typeof toKeys.publicKey === 'string') {
-            toKeys.publicKey = Base58.decode(toKeys.publicKey)
-        }
-        if (typeof toKeys.privateKey === 'string') {
-            toKeys.privateKey = Base58.decode(toKeys.privateKey)
-        }
         let recipsJson = this.strB64dec(wrapper.protected)
         let recipsOuter = JSON.parse(recipsJson)
 
@@ -164,18 +150,18 @@ export class DIDComm {
         }
         let ciphertext = this.b64dec(wrapper.ciphertext)
         let nonce = this.b64dec(wrapper.iv)
-        let tag = this.b64dec(wrapper.tag)
 
-        let message = this.decryptPlaintext(ciphertext, tag, wrapper.protected, nonce, cek)
-        try {
+        let message = this.decryptPlaintext(ciphertext, nonce, cek)
+        if (message.match(JWS_REGEX)) {
             let jws_verified = this.verifyContent(message)
+            const senderKey = Base58.encode(senderVk)
             return {
                 message: jws_verified.content,
                 recipientKey: recipVk,
-                senderKey: senderVk,
-                nonRepudiableVerification: senderVk === jws_verified.verkey ? true : false
+                senderKey,
+                nonRepudiableVerification: senderKey === jws_verified.verkey ? true : false
             }
-        } catch (err) {
+        } else {
             return {
                 message,
                 recipientKey: recipVk,
@@ -185,7 +171,7 @@ export class DIDComm {
         }
     }
 
-    private async signContent(msg: string, SignerKeyPair: sodium.KeyPair) : Promise<string> {
+    private async signContent(msg: string, SignerKeyPair: nacl.SignKeyPair) : Promise<string> {
         // get public key base58 encoded
         let senderVk = Base58.encode(SignerKeyPair.publicKey)
 
@@ -200,76 +186,87 @@ export class DIDComm {
         let header_and_payload_concat = `${b64_jose_str}.${b64_payload}`;
 
         //sign data and return compact JWS
-        let signature = this.b64url(sodium.crypto_sign(header_and_payload_concat, SignerKeyPair.privateKey));
+        let signature = this.b64url(nacl.sign(naclutil.decodeUTF8(header_and_payload_concat), SignerKeyPair.secretKey));
         return `${header_and_payload_concat}.${signature}`;
     }
 
-    private verifyContent(jws: string) : JWSUnpacked {
-        let jws_split = jws.split('.');
-        let jose_header = JSON.parse(this.strB64dec(jws_split[0]));
+    private verifyContent(jws: string): JWSUnpacked {        
+        let jws_parts = jws.match(JWS_REGEX);
+        if (!jws_parts) throw new Error('Not a valid JWS')
+        let jose_header = JSON.parse(this.strB64dec(jws_parts[1]));
         if (jose_header.alg != 'EdDSA') {
             throw "Cryptographic algorithm unidentifiable"
         };
-        let sig_msg = sodium.crypto_sign_open(this.b64dec(jws_split[2]), Base58.decode(jose_header.kid));
+        let sig_msg = nacl.sign.open(this.b64dec(jws_parts[3]), Base58.decode(jose_header.kid));
 
         return {
-            content: this.strB64dec(jws_split[1]),
+            content: this.strB64dec(jws_parts[2]),
             verkey: jose_header.kid,
-            verified: (sodium.to_string(sig_msg) === `${jws_split[0]}.${jws_split[1]}`) ? true : false
+            verified: sig_msg && (naclutil.encodeUTF8(sig_msg) === `${jws_parts[1]}.${jws_parts[2]}`) ? true : false
         };
     }
-
-    private b64url(input: any) {
-        return this.sodium.to_base64(input, this.sodium.base64_variants.URLSAFE)
+  
+    private padB64url(base64url: string): string {
+        switch (base64url.length % 4) {
+        case 0: return base64url
+        case 2: return base64url + '=='
+        case 3: return base64url + '='
+        default: throw new Error('Invalid base64url encoded string')
+        }
+    }
+    
+    private b64url(input: Uint8Array | string) {
+        return naclutil.encodeBase64(input instanceof Uint8Array ? input : naclutil.decodeUTF8(input)).replace(/\+/g, '-').replace(/\//g, '_').replace(/=/g, '')
     }
 
-    private b64dec(input: any) {
-        return this.sodium.from_base64(input, this.sodium.base64_variants.URLSAFE)
+    private b64dec(input: string): Uint8Array {
+        return naclutil.decodeBase64(this.padB64url(input).replace(/-/g, '+').replace(/_/g, '/'))
     }
 
-    private strB64dec(input: any) {
-        return this.sodium.to_string(this.sodium.from_base64(input, this.sodium.base64_variants.URLSAFE))
+    private strB64dec(input: string) : string {
+        return naclutil.encodeUTF8(this.b64dec(input))
     }
 
-    private encryptPlaintext(message: any, addData: any, key: any) {
-        let iv = this.sodium.randombytes_buf(this.sodium.crypto_aead_chacha20poly1305_ietf_NPUBBYTES)
-        let out = this.sodium.crypto_aead_chacha20poly1305_ietf_encrypt_detached(message, addData, null, iv, key)
-        return [out.ciphertext, out.mac, iv]
+    private encryptPlaintext(message: Uint8Array, key: Uint8Array) {
+        let iv = nacl.randomBytes(nacl.secretbox.nonceLength)
+        let ciphertext = nacl.secretbox(message, iv, key)
+        return [ciphertext, iv]
     }
 
-    private decryptPlaintext(ciphertext: any, mac: any, recipsBin: any, nonce: any, key: any) {
-        return this.sodium.to_string(
-            this.sodium.crypto_aead_chacha20poly1305_ietf_decrypt_detached(
-                null, // nsec
-                ciphertext,
-                mac,
-                recipsBin, // ad
-                nonce, // npub
-                key,
-            ),
+    private decryptPlaintext(ciphertext: Uint8Array, nonce: Uint8Array, key: Uint8Array) {
+        const plaintext = nacl.secretbox.open(
+            ciphertext,
+            nonce, // npub
+            key,
         )
+        if (!plaintext) throw new Error('Failure Decrypting Plaintext')
+        return naclutil.encodeUTF8(plaintext)
     }
 
-    private prepareRecipientKeys(toKeys: any, fromKeys: any = null) {
-        let cek = this.sodium.crypto_aead_chacha20poly1305_ietf_keygen()
+    private prepareRecipientKeys(toKeys: Uint8Array[], fromKeys: nacl.SignKeyPair|null = null) {
+        const cek = nacl.randomBytes(nacl.secretbox.keyLength)
         let recips: any[] = []
+        let senderVk: Uint8Array | undefined
+        let senderKp: nacl.BoxKeyPair | undefined
 
-        toKeys.forEach((targetVk: any) => {
+        if (fromKeys) {
+            senderVk = fromKeys.publicKey
+            senderKp = convertKeyPair(fromKeys)
+        }
+        toKeys.forEach((targetVk: Uint8Array) => {
             let encCek = null
             let encSender = null
             let nonce = null
 
-            let targetPk = this.sodium.crypto_sign_ed25519_pk_to_curve25519(targetVk)
+            let targetPk = convertPublicKey(targetVk)
 
-            if (fromKeys) {
-                let senderVk = Base58.encode(fromKeys.publicKey)
-                let senderSk = this.sodium.crypto_sign_ed25519_sk_to_curve25519(fromKeys.privateKey)
-                encSender = this.sodium.crypto_box_seal(senderVk, targetPk)
+            if (senderVk && senderKp) {
+                encSender = sealedbox.seal(senderVk, targetPk)
 
-                nonce = this.sodium.randombytes_buf(this.sodium.crypto_box_NONCEBYTES)
-                encCek = this.sodium.crypto_box_easy(cek, nonce, targetPk, senderSk)
+                nonce = nacl.randomBytes(nacl.box.nonceLength)
+                encCek = nacl.box(cek, nonce, targetPk, senderKp.secretKey)
             } else {
-                encCek = this.sodium.crypto_box_seal(cek, targetPk)
+                encCek = sealedbox.seal(cek, targetPk)
             }
 
             recips.push(
@@ -286,43 +283,38 @@ export class DIDComm {
 
         let data = {
             alg: fromKeys ? 'Authcrypt' : 'Anoncrypt',
-            enc: 'chacha20poly1305_ietf',
+            enc: 'xsalsa20-poly1305',
             recipients: recips,
             typ: 'JWM/1.0',
         }
-        return [JSON.stringify(data), cek]
+        return { data: JSON.stringify(data), cek }
     }
 
-    private locateRecKey(recipients: any, keys: any) {
-        let notFound = []
+    private locateRecKey(recipients: any, keys: nacl.SignKeyPair) {
+        let kp = convertKeyPair(keys)
+        let myPk = Base58.encode(keys.publicKey)
         /* tslint:disable */
-        for (let index in recipients) {
-            let recip = recipients[index]
+        for (let recip of recipients) {
             if (!('header' in recip) || !('encrypted_key' in recip)) {
                 throw new Error('Invalid recipient header')
             }
 
-            let recipVk = Base58.decode(recip.header.kid)
-            if (!this.sodium.memcmp(recipVk, keys.publicKey)) {
-                notFound.push(recip.header.kid)
-            }
-            let pk = this.sodium.crypto_sign_ed25519_pk_to_curve25519(keys.publicKey)
-            let sk = this.sodium.crypto_sign_ed25519_sk_to_curve25519(keys.privateKey)
-
-            let encrytpedKey = this.b64dec(recip.encrypted_key)
-            let nonce = recip.header.iv ? this.b64dec(recip.header.iv) : null
-            let encSender = recip.header.sender ? this.b64dec(recip.header.sender) : null
-
-            let senderVk = null
-            let cek = null
-            if (nonce && encSender) {
-                senderVk = this.sodium.to_string(this.sodium.crypto_box_seal_open(encSender, pk, sk))
-                let senderPk = this.sodium.crypto_sign_ed25519_pk_to_curve25519(Base58.decode(senderVk))
-                cek = this.sodium.crypto_box_open_easy(encrytpedKey, nonce, senderPk, sk)
-            } else {
-                cek = this.sodium.crypto_box_seal_open(encrytpedKey, pk, sk)
+            if (recip.header.kid === myPk) {
+                let encryptedKey = this.b64dec(recip.encrypted_key)
+                let nonce = recip.header.iv ? this.b64dec(recip.header.iv) : null
+                let encSender = recip.header.sender ? this.b64dec(recip.header.sender) : null
+
+                let senderVk = null
+                let cek = null
+                if (nonce && encSender) {
+                    senderVk = sealedbox.open(encSender, kp.publicKey, kp.secretKey)
+                    let senderPk = convertPublicKey(senderVk)
+                    cek = nacl.box.open(encryptedKey, nonce, senderPk, kp.secretKey)
+                } else {
+                    cek = sealedbox.open(encryptedKey, kp.publicKey, kp.secretKey)
+                }
+                return [cek, senderVk, recip.header.kid]
             }
-            return [cek, senderVk, recip.header.kid]
         }
 
         throw new Error('No corresponding recipient key found in recipients')
diff --git a/webpack.config.js b/webpack.config.js
new file mode 100644
index 0000000..3a7ded5
--- /dev/null
+++ b/webpack.config.js
@@ -0,0 +1,9 @@
+const path = require('path');
+
+module.exports = {
+  entry: './lib/index.js',
+  output: {
+    filename: 'main.js',
+    path: path.resolve(__dirname, 'dist')
+  }
+};