Checked in project code

Author: add19

Bst.js

@@ -116,7 +116,7 @@ class MerkleTree{
     }
     TreeTraversal(){
         for(var i=0; i<this.nodes.length; i++){
-            console.log(this.nodes[i]);
+            console.log(this.nodes[i].data);
         }
     }
 }
@@ -126,22 +126,38 @@ var txn1 = 't1';
 var txn2 = 't2';
 var txn3 = 't3';
 var txn4 = 't4';
+var txn5 = 't5';
+var txn6 = 't6';
+var txn7 = 't7';
+var txn8 = 't8';
 var merkleHash = new MerkleHash();
-hash1 = merkleHash.ComputeHash(txn1);
-hash2 = merkleHash.ComputeHash(txn2);
-hash3 = merkleHash.ComputeHash(txn3);
-hash4 = merkleHash.ComputeHash(txn4);
+var hash1 = merkleHash.ComputeHash(txn1);
+var hash2 = merkleHash.ComputeHash(txn2);
+var hash3 = merkleHash.ComputeHash(txn3);
+var hash4 = merkleHash.ComputeHash(txn4);
+var hash5 = merkleHash.ComputeHash(txn5);
+var hash6 = merkleHash.ComputeHash(txn6);
+var hash7 = merkleHash.ComputeHash(txn7);
+var hash8 = merkleHash.ComputeHash(txn8);
 tree.AppendHash(hash1);
 tree.AppendHash(hash2);
 tree.AppendHash(hash3);
 tree.AppendHash(hash4);
+tree.AppendHash(hash5);
+tree.AppendHash(hash6);
+tree.AppendHash(hash7);
+tree.AppendHash(hash8);
 tree.ConstructTree();
 // console.log(tree.rootNode);
 tree.TreeTraversal();
 console.log("====================================================================================");
-console.log("Merkle Proof of Transaction: " + txn3);
-var trail = tree.AuditProof(hash3);
-var currentHash = hash3;
+console.log("Merkle Proof of Transaction: " + txn7);
+var trail = tree.AuditProof(hash7);
+var currentHash = hash7;
+console.log(trail);
+for(var i=0; i<trail.length; i++){
+    console.log(trail[i].data);
+}
 for(var i=0; i<trail.length; i++){
     // console.log(trail[i].data + " " + trail[i].direction);
     if(trail[i].direction == 'left'){

MerkleTree.js

@@ -1 +1,24 @@
-A blockchain based student verification system. Work in progress... :)
+Student verification is a request for a university/college to verify a student’s degree and
+enrollment information. Students may need it to defer student loans, health insurance, to verify degrees for
+prospective employers, etc. A transcript is a comprehensive record of academic information that includes
+coursework, grades, credit hours, CPI and degrees earned. Students would request an official transcript
+when they are transferring to another institution, applying to graduate school, applying for an internship or
+applying for a scholarship.
+Generally, companies ask for a student’s verification via the college’s portal. As well as
+students also request for the transcript via the same portal. The college has to manually check the grades
+of the students and the portal states that it might take up to 7 days to complete the request, which might
+cause missing of important deadlines, besides there is also a chance of human error.
+So the project proposes an automated system to tackle these problems and complete the
+request in less time with greater reliability. The project proposes an implementation of a Merkle tree based
+private blockchain in a distributed environment. To reach the consensus in this distributed system the
+project uses practical Byzantine Fault Tolerance(pBFT) mechanism. Consistency and availability along
+with scalability and security of the system is ensured by this approach.
+The verifying party requests for validation of a particular student by entering the required
+information on the portal. The information would be hashed and sent to the college’s server, this server
+would perform a Merkle proof to validate that the hash and check if that hash is present in the system. Once
+the hash is validated, the verifying party gets the result as the student is validated along with the image of
+the original grade card for further inspection.
+The project also proposes a cross-validation system for the transcript generation. The
+student requesting the transcript has to fill the same information as that of the verifying party along with
+his/her email address. The data is again hashed and validated via the Merkle proof. And then only the
+transcript is generated and mailed to the concerned student.