diff --git a/npm-shrinkwrap.json b/npm-shrinkwrap.json
index a41f1a4b..173859b3 100644
--- a/npm-shrinkwrap.json
+++ b/npm-shrinkwrap.json
@@ -4,6 +4,14 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "@mattiasbuelens/web-streams-polyfill": {
+      "version": "0.1.0-alpha.4",
+      "resolved": "https://registry.npmjs.org/@mattiasbuelens/web-streams-polyfill/-/web-streams-polyfill-0.1.0-alpha.4.tgz",
+      "integrity": "sha512-WAsiWLWc7ZNS1b0qFAoKSFLeqXesPa60YelVE3pPKc6pZ4iuSW9l6DBxY4hMPQj1dQCBDrUHJj/NDSjE85bTRQ==",
+      "requires": {
+        "@types/whatwg-streams": "0.0.5"
+      }
+    },
     "@sinonjs/formatio": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/@sinonjs/formatio/-/formatio-2.0.0.tgz",
@@ -13,6 +21,11 @@
         "samsam": "1.3.0"
       }
     },
+    "@types/whatwg-streams": {
+      "version": "0.0.5",
+      "resolved": "https://registry.npmjs.org/@types/whatwg-streams/-/whatwg-streams-0.0.5.tgz",
+      "integrity": "sha512-y1UgRuGO64x/v+UIerA2AMquW/qxaIUD95rbf8FYxtVG//D3381+JexnZfcEiZSqXErdxdPmXpz8srY7gs9Grw=="
+    },
     "JSONStream": {
       "version": "1.3.3",
       "resolved": "https://registry.npmjs.org/JSONStream/-/JSONStream-1.3.3.tgz",
@@ -262,9 +275,8 @@
       "dev": true
     },
     "asmcrypto.js": {
-      "version": "0.22.0",
-      "resolved": "https://registry.npmjs.org/asmcrypto.js/-/asmcrypto.js-0.22.0.tgz",
-      "integrity": "sha512-usgMoyXjMbx/ZPdzTSXExhMPur2FTdz/Vo5PVx2gIaBcdAAJNOFlsdgqveM8Cff7W0v+xrf9BwjOV26JSAF9qA=="
+      "version": "github:openpgpjs/asmcrypto#f5c9e523e0ed41f8c52609e9f9259d9b5ceb4201",
+      "from": "github:openpgpjs/asmcrypto"
     },
     "asn1": {
       "version": "0.2.3",
@@ -1145,9 +1157,9 @@
       "dev": true
     },
     "bcrypt-pbkdf": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.1.tgz",
-      "integrity": "sha1-Y7xdy2EzG5K8Bf1SiVPDNGKgb40=",
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.2.tgz",
+      "integrity": "sha1-pDAdOJtqQ/m2f/PKEaP2Y342Dp4=",
       "dev": true,
       "optional": true,
       "requires": {
@@ -6476,11 +6488,6 @@
         "is-promise": "^2.1.0"
       }
     },
-    "rusha": {
-      "version": "0.8.12",
-      "resolved": "https://registry.npmjs.org/rusha/-/rusha-0.8.12.tgz",
-      "integrity": "sha1-XYOM4fzosUVnTudx6q1byyV15ks="
-    },
     "rx-lite": {
       "version": "4.0.8",
       "resolved": "https://registry.npmjs.org/rx-lite/-/rx-lite-4.0.8.tgz",
@@ -6508,6 +6515,12 @@
       "integrity": "sha1-PnZyPjjf3aE8mx0poeB//uSzC1c=",
       "dev": true
     },
+    "safer-buffer": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz",
+      "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==",
+      "dev": true
+    },
     "samsam": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/samsam/-/samsam-1.3.0.tgz",
@@ -6783,9 +6796,9 @@
       "dev": true
     },
     "sshpk": {
-      "version": "1.13.1",
-      "resolved": "https://registry.npmjs.org/sshpk/-/sshpk-1.13.1.tgz",
-      "integrity": "sha1-US322mKHFEMW3EwY/hzx2UBzm+M=",
+      "version": "1.14.2",
+      "resolved": "https://registry.npmjs.org/sshpk/-/sshpk-1.14.2.tgz",
+      "integrity": "sha1-xvxhZIo9nE52T9P8306hBeSSupg=",
       "dev": true,
       "requires": {
         "asn1": "~0.2.3",
@@ -6795,6 +6808,7 @@
         "ecc-jsbn": "~0.1.1",
         "getpass": "^0.1.1",
         "jsbn": "~0.1.0",
+        "safer-buffer": "^2.0.2",
         "tweetnacl": "~0.14.0"
       }
     },
@@ -7064,6 +7078,12 @@
       "integrity": "sha1-45mpgiV6J22uQou5KEXLcb3CbRk=",
       "dev": true
     },
+    "text-encoding-utf-8": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/text-encoding-utf-8/-/text-encoding-utf-8-1.0.2.tgz",
+      "integrity": "sha512-8bw4MY9WjdsD2aMtO0OzOCY3pXGYNx2d2FfHRVUKkiCPDWjKuOlhLVASS+pD7VkLTVjW268LYJHwsnPFlBpbAg==",
+      "dev": true
+    },
     "text-table": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/text-table/-/text-table-0.2.0.tgz",
@@ -7396,6 +7416,10 @@
         }
       }
     },
+    "web-stream-tools": {
+      "version": "github:openpgpjs/web-stream-tools#37c3542b11455856012b5ad87c39088457e2b3a1",
+      "from": "github:openpgpjs/web-stream-tools"
+    },
     "websocket-driver": {
       "version": "0.7.0",
       "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.0.tgz",