Add some js files for client-end.

js/elliptic

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+Subproject commit 6b0d2b76caae91471649c8e21f0b1d3ba0f96090

js/securejson.js

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+var EC = require('./elliptic/elliptic.min').ec;
+var SHA3 = require('./sha3/sha3.min');
+
+// Create and initialize EC context
+// (better do it once and reuse it)
+var ec = new EC('secp256k1');
+
+// Generate keys
+/*
+var key = ec.genKeyPair();
+prihex = key.getPrivate('hex')
+pubhex = key.getPublic(false, 'hex')
+*/
+console.log(window.performance.now())
+//var prihex = "c9afa9d845ba75166b5c215767b1d6934e50c3db36e89b127b8a622b120f6721";
+var prihex = SHA3.sha3_256('hahahahahaha');
+
+var keys = ec.keyFromPrivate(prihex, 'hex');
+var pubhex = keys.getPublic(false, 'hex');
+console.log(prihex.length/2)
+console.log(prihex)
+console.log(pubhex.length/2);
+console.log(pubhex);
+
+pubkey = ec.keyFromPublic(pubhex, 'hex');
+prikey = ec.keyFromPrivate(prihex, 'hex');
+
+var msg = [ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ];
+var sig = ec.sign(msg, prikey);
+console.log(ec.verify(msg, sig, pubkey));
+
+// Sign the message's hash (input must be an array, or a hex-string)
+var msgHash = [ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ];
+var signature = prikey.sign(msgHash);
+
+// Export DER encoded signature in Array
+var derSign = signature.toDER();
+
+// Verify signature
+console.log(pubkey.verify(msgHash, derSign));
+
+function GenerageJson(user, passwd, data) {
+	var prikey = SHA3.sha3_256(passwd);
+	var iv = SHA3.sha3_256(user);
+}