Move source files to src/. Update package.json.

src/HashCacheItem.js

@@ -0,0 +1,40 @@
+'use strict';
+
+const encryption = require('./Encryption');
+
+const HashCacheOps = {
+  Add: "ADD",
+  Put: "PUT",
+  Delete: "DELETE"
+};
+
+class HashCacheItem {
+  constructor(operation, key, sequenceNumber, targetHash, metaInfo) {
+    this.op     = operation;
+    this.key    = key;
+    this.seq    = sequenceNumber;
+    this.target = targetHash;
+    this.meta   = metaInfo;
+  }
+}
+
+class EncryptedHashCacheItem extends HashCacheItem {
+  constructor(operation, key, sequenceNumber, targetHash, metaInfo, publicKey, privateKey, salt) {
+    super(operation, key, sequenceNumber, targetHash, metaInfo);
+    this.pubkey  = publicKey;
+    try {
+      this.target  = encryption.encrypt(targetHash, privateKey, publicKey);
+      this.payload = this.target; // old hash-cache api compatibility
+      this.meta    = encryption.encrypt(JSON.stringify(metaInfo), privateKey, publicKey);
+      this.sig     = encryption.sign(this.target, privateKey, this.seq, salt || "");
+    } catch(e) {
+      console.log("Signing HashCacheItem failed:", e);
+    }
+  }
+}
+
+module.exports = {
+  HashCacheOps: HashCacheOps,
+  HashCacheItem: HashCacheItem,
+  EncryptedHashCacheItem: EncryptedHashCacheItem
+};