From 77b99f7d3a8747f562f2b8f1e8df551aafea1b28 Mon Sep 17 00:00:00 2001
From: Yigit Sever
Date: Thu, 15 Apr 2021 13:35:06 +0300
Subject: Remove lorems and inpsumses

---
 site/content/block_docs.md              | 27 ++++++++++--
 site/content/register_docs.md           | 51 +++++++++++-----------
 site/content/transaction_docs.md        | 23 ++++++++--
 site/public/block-docs/index.html       | 49 +++++++++++++++++++--
 site/public/register-docs/index.html    | 75 ++++++++++++---------------------
 site/public/search_index.en.js          |  2 +-
 site/public/transaction-docs/index.html | 47 ++++++++++++++++++---
 src/handlers.rs                         |  2 +-
 src/schema.rs                           |  2 +-
 9 files changed, 183 insertions(+), 95 deletions(-)

diff --git a/site/content/block_docs.md b/site/content/block_docs.md
index 26803bd..4227f26 100644
--- a/site/content/block_docs.md
+++ b/site/content/block_docs.md
@@ -4,8 +4,27 @@ description = "Block Documentation"
 weight = 2
 +++
 
-Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod
-tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At
-vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd
-ubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.
+A block that was proposed to commit Transactions in `transaction_list` to the
+ledger with a nonce that made `hash` valid; 6 zeroes at the left hand side of the
+hash (24 bytes).
 
+We are _mining_ using [blake2s](https://www.blake2.net/) algorithm, which produces 256 bit hashes. Hash/second is roughly 20x10^3 on my machine, a new block can be mined in around 4-6 minutes.
+
+# Requests
+
+## GET
+A HTTP `GET` request to [/block](/block) endpoint will return the latest mined block.
+
+## POST
+
+A HTTP `POST` request with Authorization using JWT will allow you to propose your own blocks.
+
+# Fields
+```
+transaction_list: [array of Fingerprints]
+nonce: unsigned 32-bit integer
+timestamp: ISO 8601 <date>T<time>
+hash: String
+```
+
+[ISO 8601 Reference](https://en.wikipedia.org/wiki/ISO_8601#Combined_date_and_time_representations)
diff --git a/site/content/register_docs.md b/site/content/register_docs.md
index 45571fb..83aef7f 100644
--- a/site/content/register_docs.md
+++ b/site/content/register_docs.md
@@ -5,38 +5,35 @@ weight = 3
 +++
 
 POST request to /register endpoint
-Lets a [`User`] (=student) to authenticate themselves to the system
-This `request` can be rejected if the payload is malformed (=not authenticated properly) or if
-the [`AuthRequest.user_id`] of the `request` is not in the list of users that can hold a Gradecoin account
 
-# Authentication Process
-- Gradecoin's Public Key (`gradecoin_public_key`) is listed on moodle.
-- Gradecoin's Private Key (`gradecoin_private_key`) is loaded here
+Lets a user to authenticate themselves to the system.
+Only people who are enrolled to the class can open Gradecoin accounts.
+This is enforced with your Student ID and a one time password you will receive.
 
-- Student picks a short temporary key (`k_temp`)
-- Creates a JSON object (`auth_plaintext`) with their `metu_id` and `public key` in base64 (PEM) format (`S_PK`):
+# Authentication Process
+- Gradecoin's Public Key (`gradecoin_public_key`) is listed on our Moodle page.
+- You pick a short temporary key (`k_temp`)
+- Create a JSON object (`auth_plaintext`) with your `metu_id` and `public key` in base64 (PEM) format (`S_PK`) [reference](https://tls.mbed.org/kb/cryptography/asn1-key-structures-in-der-and-pem)
+```json
 {
-    student_id: "e12345",
-    passwd: "15 char secret"
-    public_key: "---BEGIN PUBLIC KEY..."
+    "student_id": "e12345",
+    "passwd": "15 char secret",
+    "public_key": "---BEGIN PUBLIC KEY..."
 }
+```
+
+- Pick a random IV.
+- Encrypt the serialized string of `auth_plaintext` with 128 bit block AES in CBC mode with Pkcs7 padding using the temporary key (`k_temp`), the result is `auth_ciphertext`. Encode this with base64.
+- The temporary key you have picked `k_temp` is encrypted using RSA with OAEP padding scheme
+using SHA-256 with `gradecoin_public_key`, giving us `key_ciphertext`. Encode this with base 64.
+- The payload JSON object (`auth_request`) can be serialized now:
 
-- Encrypts the serialized string of `auth_plaintext` with 128 bit block AES in CBC mode with Pkcs7 padding using the temporary key (`k_temp`), the result is `auth_ciphertext` TODO should this be base64'd?
-- The temporary key student has picked `k_temp` is encrypted using RSA with OAEP padding scheme
-using sha256 with `gradecoin_public_key` (TODO base64? same as above), giving us `key_ciphertext`
-- The payload JSON object (`auth_request`) can be JSON serialized now:
+```json
 {
-    c: "auth_ciphertext"
-    key: "key_ciphertext"
+    "c": "auth_ciphertext",
+    "iv": "hexadecimal",
+    "key": "key_ciphertext"
 }
+```
 
-## Gradecoin Side
-
-- Upon receiving, we first RSA decrypt with OAEP padding scheme using SHA256 with `gradecoin_private_key` as the key and auth_request.key `key` as the ciphertext, receiving `temp_key` (this is the temporary key chosen by stu
-- With `temp_key`, we can AES 128 Cbc Pkcs7 decrypt the `auth_request.c`, giving us
-auth_plaintext
-- The `auth_plaintext` String can be deserialized to [`AuthRequest`]
-- We then verify the payload and calculate the User fingerprint
-- Finally, create the new [`User`] object, insert to users HashMap `<fingerprint, User>`
-
-
+If your authentication process was valid, you will be given access and your public key fingerprint that is your address.
diff --git a/site/content/transaction_docs.md b/site/content/transaction_docs.md
index 6607fe9..0526f4e 100644
--- a/site/content/transaction_docs.md
+++ b/site/content/transaction_docs.md
@@ -4,8 +4,23 @@ description = "Transaction documentation"
 weight = 2
 +++
 
-Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod
-tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At
-vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd
-ubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.
+A transaction request between `source` and `target` to move `amount` Gradecoin.
 
+# Requests
+
+## GET
+A HTTP `GET` request to [/transaction](/transaction) endpoint will return the current list of pending transactions.
+
+## POST
+
+A HTTP `POST` request with Authorization using JWT to [/transaction](/transactions) will allow you to propose your own transactions.
+
+
+# Fields
+```
+by: Fingerprint
+source: Fingerprint
+target: Fingerprint
+amount: unsigned 16 bit integer
+timestamp: ISO 8601 <date>T<time>
+```
diff --git a/site/public/block-docs/index.html b/site/public/block-docs/index.html
index 84a1463..7fd12c4 100644
--- a/site/public/block-docs/index.html
+++ b/site/public/block-docs/index.html
@@ -66,14 +66,55 @@
         
         
         
+        
+        <div class="toc">
+            <div class="toc-sticky">
+                
+                <div class="toc-item">
+                    <a class="subtext" href="https://gradecoin.xyz/block-docs/#requests">Requests</a>
+                </div>
+                
+                
+                <div class="toc-item-child">
+                    <a class="subtext" href="https://gradecoin.xyz/block-docs/#get"><small>- GET</small></a>
+                </div>
+                
+                <div class="toc-item-child">
+                    <a class="subtext" href="https://gradecoin.xyz/block-docs/#post"><small>- POST</small></a>
+                </div>
+                
+                
+                
+                <div class="toc-item">
+                    <a class="subtext" href="https://gradecoin.xyz/block-docs/#fields">Fields</a>
+                </div>
+                
+                
+            </div>
+        </div>
+        
+        
 
         <div class="content text">
             
 <div class="heading-text">Block Documentation</div>
-<p>Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod
-tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At
-vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd
-ubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.</p>
+<p>A block that was proposed to commit Transactions in <code>transaction_list</code> to the
+ledger with a nonce that made <code>hash</code> valid; 6 zeroes at the left hand side of the
+hash (24 bytes).</p>
+<p>We are <em>mining</em> using <a href="https://www.blake2.net/">blake2s</a> algorithm, which produces 256 bit hashes. Hash/second is roughly 20x10^3 on my machine, a new block can be mined in around 4-6 minutes.</p>
+<h1 id="requests">Requests</h1>
+<h2 id="get">GET</h2>
+<p>A HTTP <code>GET</code> request to <a href="/block">/block</a> endpoint will return the latest mined block.</p>
+<h2 id="post">POST</h2>
+<p>A HTTP <code>POST</code> request with Authorization using JWT will allow you to propose your own blocks.</p>
+<h1 id="fields">Fields</h1>
+<pre style="background-color:#ffffff;">
+<code><span style="color:#545052;">transaction_list: [array of Fingerprints]
+nonce: unsigned 32-bit integer
+timestamp: ISO 8601 &lt;date&gt;T&lt;time&gt;
+hash: String
+</span></code></pre>
+<p><a href="https://en.wikipedia.org/wiki/ISO_8601#Combined_date_and_time_representations">ISO 8601 Reference</a></p>
 
 
         </div>
diff --git a/site/public/register-docs/index.html b/site/public/register-docs/index.html
index e3170f9..9a9b0c0 100644
--- a/site/public/register-docs/index.html
+++ b/site/public/register-docs/index.html
@@ -75,12 +75,6 @@
                 </div>
                 
                 
-                <div class="toc-item-child">
-                    <a class="subtext" href="https://gradecoin.xyz/register-docs/#gradecoin-side"><small>- Gradecoin Side</small></a>
-                </div>
-                
-                
-                
             </div>
         </div>
         
@@ -89,53 +83,38 @@
         <div class="content text">
             
 <div class="heading-text">Register Documentation</div>
-<p>POST request to /register endpoint
-Lets a [<code>User</code>] (=student) to authenticate themselves to the system
-This <code>request</code> can be rejected if the payload is malformed (=not authenticated properly) or if
-the [<code>AuthRequest.user_id</code>] of the <code>request</code> is not in the list of users that can hold a Gradecoin account</p>
+<p>POST request to /register endpoint</p>
+<p>Lets a user to authenticate themselves to the system.
+Only people who are enrolled to the class can open Gradecoin accounts.
+This is enforced with your Student ID and a one time password you will receive.</p>
 <h1 id="authentication-process">Authentication Process</h1>
 <ul>
-<li>
-<p>Gradecoin's Public Key (<code>gradecoin_public_key</code>) is listed on moodle.</p>
-</li>
-<li>
-<p>Gradecoin's Private Key (<code>gradecoin_private_key</code>) is loaded here</p>
-</li>
-<li>
-<p>Student picks a short temporary key (<code>k_temp</code>)</p>
-</li>
-<li>
-<p>Creates a JSON object (<code>auth_plaintext</code>) with their <code>metu_id</code> and <code>public key</code> in base64 (PEM) format (<code>S_PK</code>):
-{
-student_id: &quot;e12345&quot;,
-passwd: &quot;15 char secret&quot;
-public_key: &quot;---BEGIN PUBLIC KEY...&quot;
-}</p>
-</li>
-<li>
-<p>Encrypts the serialized string of <code>auth_plaintext</code> with 128 bit block AES in CBC mode with Pkcs7 padding using the temporary key (<code>k_temp</code>), the result is <code>auth_ciphertext</code> TODO should this be base64'd?</p>
-</li>
-<li>
-<p>The temporary key student has picked <code>k_temp</code> is encrypted using RSA with OAEP padding scheme
-using sha256 with <code>gradecoin_public_key</code> (TODO base64? same as above), giving us <code>key_ciphertext</code></p>
-</li>
-<li>
-<p>The payload JSON object (<code>auth_request</code>) can be JSON serialized now:
-{
-c: &quot;auth_ciphertext&quot;
-key: &quot;key_ciphertext&quot;
-}</p>
-</li>
+<li>Gradecoin's Public Key (<code>gradecoin_public_key</code>) is listed on our Moodle page.</li>
+<li>You pick a short temporary key (<code>k_temp</code>)</li>
+<li>Create a JSON object (<code>auth_plaintext</code>) with your <code>metu_id</code> and <code>public key</code> in base64 (PEM) format (<code>S_PK</code>) <a href="https://tls.mbed.org/kb/cryptography/asn1-key-structures-in-der-and-pem">reference</a></li>
 </ul>
-<h2 id="gradecoin-side">Gradecoin Side</h2>
+<pre style="background-color:#ffffff;">
+<code class="language-json" data-lang="json"><span style="color:#545052;">{
+    &quot;</span><span style="color:#009854;">student_id</span><span style="color:#545052;">&quot;: &quot;</span><span style="color:#009854;">e12345</span><span style="color:#545052;">&quot;,
+    &quot;</span><span style="color:#009854;">passwd</span><span style="color:#545052;">&quot;: &quot;</span><span style="color:#009854;">15 char secret</span><span style="color:#545052;">&quot;,
+    &quot;</span><span style="color:#009854;">public_key</span><span style="color:#545052;">&quot;: &quot;</span><span style="color:#009854;">---BEGIN PUBLIC KEY...</span><span style="color:#545052;">&quot;
+}
+</span></code></pre>
 <ul>
-<li>Upon receiving, we first RSA decrypt with OAEP padding scheme using SHA256 with <code>gradecoin_private_key</code> as the key and auth_request.key <code>key</code> as the ciphertext, receiving <code>temp_key</code> (this is the temporary key chosen by stu</li>
-<li>With <code>temp_key</code>, we can AES 128 Cbc Pkcs7 decrypt the <code>auth_request.c</code>, giving us
-auth_plaintext</li>
-<li>The <code>auth_plaintext</code> String can be deserialized to [<code>AuthRequest</code>]</li>
-<li>We then verify the payload and calculate the User fingerprint</li>
-<li>Finally, create the new [<code>User</code>] object, insert to users HashMap <code>&lt;fingerprint, User&gt;</code></li>
+<li>Pick a random IV.</li>
+<li>Encrypt the serialized string of <code>auth_plaintext</code> with 128 bit block AES in CBC mode with Pkcs7 padding using the temporary key (<code>k_temp</code>), the result is <code>auth_ciphertext</code>. Encode this with base64.</li>
+<li>The temporary key you have picked <code>k_temp</code> is encrypted using RSA with OAEP padding scheme
+using SHA-256 with <code>gradecoin_public_key</code>, giving us <code>key_ciphertext</code>. Encode this with base 64.</li>
+<li>The payload JSON object (<code>auth_request</code>) can be serialized now:</li>
 </ul>
+<pre style="background-color:#ffffff;">
+<code class="language-json" data-lang="json"><span style="color:#545052;">{
+    &quot;</span><span style="color:#009854;">c</span><span style="color:#545052;">&quot;: &quot;</span><span style="color:#009854;">auth_ciphertext</span><span style="color:#545052;">&quot;,
+    &quot;</span><span style="color:#009854;">iv</span><span style="color:#545052;">&quot;: &quot;</span><span style="color:#009854;">hexadecimal</span><span style="color:#545052;">&quot;,
+    &quot;</span><span style="color:#009854;">key</span><span style="color:#545052;">&quot;: &quot;</span><span style="color:#009854;">key_ciphertext</span><span style="color:#545052;">&quot;
+}
+</span></code></pre>
+<p>If your authentication process was valid, you will be given access and your public key fingerprint that is your address.</p>
 
 
         </div>
diff --git a/site/public/search_index.en.js b/site/public/search_index.en.js
index 97b7942..a5eeec0 100644
--- a/site/public/search_index.en.js
+++ b/site/public/search_index.en.js
@@ -1 +1 @@
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Gradecoin is the faux currency we will use to simulate a blockchain network. At the end of the simulation, the amount of Gradecoin you hold will be your PA1 grade.\nA quick summary: authenticate yourself to the system using public key encryption.\nCraft Transaction proposals and tag them using JWTs.\nWhen there are enough transactions then you can propose Blocks in the same way.\nBlocks need to be mined beforehand using Proof-of-work, or brute force.\nGradecoin offers 3 endpoints at /register, /block and /transaction. You can only send GET requests to /block and /transaction without authorization.\nThe server is programmed in RESTful architecture, there are no DELETE, PUT or UPDATE operations, though.\nGradecoin uses a Proof-of-work block accepting mechanism. It uses single round Blake2s hashing which produces 256-bit (64 hexadecimal characters) output. The target hash is 24 bits or 6 hexadecimal characters of 0. During testing, I could mine a block on average around 2-7 minutes.\n\nWe're expecting you to use existing tools and implementations. Standards are hard. Don't roll your own crypto. Feel free to ask questions. Collaborate.\n\nYou might ask,\n\nBut if nobody has any Gradecoin then how do we have transactions?\n\nThere is a bank! Their public key is 31415926535897932384626433832795028841971693993751058209749445923 and they have some amount of Gradecoin preloaded. It's also the only account that you can send transactions requests to yourself.\nCoinbase\nThe first transactions of a block is called the coinbase. They are the author of the block proposal and if the block is accepted then they get compensated for their efforts with some Gradecoin.\nPublic Key Signatures\nGradecoin uses 2048 bit RSA keyspairs.\nServices\n/register\n\nStudent creates their own 2048 bit RSA keypair\nDownloads Gradecoin's Public Key from Moodle\nEncrypts their JSON wrapped Public Key, Student ID and one time passwd using Gradecoin's Public Key\nTheir public key is now in our database and can be used to sign their JWT's during requests\n\n/transaction\n\nYou can offer a Transaction - POST request\n\nThe request should have Authorization\nThe request header should be signed by the Public Key of the by field in the transaction\n\n\nfetch the list of Transactions - GET request\n\n/block\n\noffer a [schema::Block] - POST request\n\nThe request should have Authorization\nThe [schema::Block::transaction_list] of the block should be a subset of [schema::Db::pending_transactions]\n\n\nfetch the last accepted [schema::Block] - GET request\n\nAuthorization: The request header should have Bearer JWT.Token signed with Student Public Key\nQuestions\nThis all sound complicated!\n\nI've drawn inspiration from actual Bitcoin transactions and warp. The simplicity of the system is how little interfaces it has.\nDon't know where to start? Gradecoin uses RESTful API; simple curl commands or even your browser will work! This website can help as well.\nJWT Debugger and the corresponding RFC\nRemember that you are absolutely encouraged to grab off-the-shelf implementations for every cryptography primitive you will use. You can start by finding a code snippet to generate a RSA keypair?\n\nI found a bug!\nThank you! Please let me know so we can solve it.\nI hacked the server!\nThat wasn't supposed to happen :( I did not place any intentional vulnerabilities to the system so if you cracked something, it was not intended. Please don't abuse it and let me know so I can patch it.\nSubmission?\nAt the end of the simulation, your Gradecoin balance will be your grade. I will also expect a unique client programmed in either;\n\nc\nc++\nperl\nrust\npython\nrandom assortment of bash scripts\n\nIf your favourite programming language is missing please let me know 🤷?\nCan my friends play?\nSadly, no. Student's who are enrolled to the class will receive one-time-passwords for authentication.\nHow and or Why?\n\nBuilt, with Rust\n\n","id":"https://gradecoin.xyz/","title":"Gradecoin"},"https://gradecoin.xyz/block-docs/":{"body":"Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod\ntempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At\nvero eos et accusam et justo duo dolores et ea rebum. 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Gradecoin is the faux currency we will use to simulate a blockchain network. At the end of the simulation, the amount of Gradecoin you hold will be your PA1 grade.\nA quick summary: authenticate yourself to the system using public key encryption.\nCraft Transaction proposals and tag them using JWTs.\nWhen there are enough transactions then you can propose Blocks in the same way.\nBlocks need to be mined beforehand using Proof-of-work, or brute force.\nGradecoin offers 3 endpoints at /register, /block and /transaction. You can only send GET requests to /block and /transaction without authorization.\nThe server is programmed in RESTful architecture, there are no DELETE, PUT or UPDATE operations, though.\nGradecoin uses a Proof-of-work block accepting mechanism. It uses single round Blake2s hashing which produces 256-bit (64 hexadecimal characters) output. The target hash is 24 bits or 6 hexadecimal characters of 0. During testing, I could mine a block on average around 2-7 minutes.\n\nWe're expecting you to use existing tools and implementations. Standards are hard. Don't roll your own crypto. Feel free to ask questions. Collaborate.\n\nYou might ask,\n\nBut if nobody has any Gradecoin then how do we have transactions?\n\nThere is a bank! Their public key is 31415926535897932384626433832795028841971693993751058209749445923 and they have some amount of Gradecoin preloaded. It's also the only account that you can send transactions requests to yourself.\nCoinbase\nThe first transactions of a block is called the coinbase. They are the author of the block proposal and if the block is accepted then they get compensated for their efforts with some Gradecoin.\nPublic Key Signatures\nGradecoin uses 2048 bit RSA keyspairs.\nServices\n/register\n\nStudent creates their own 2048 bit RSA keypair\nDownloads Gradecoin's Public Key from Moodle\nEncrypts their JSON wrapped Public Key, Student ID and one time passwd using Gradecoin's Public Key\nTheir public key is now in our database and can be used to sign their JWT's during requests\n\n/transaction\n\nYou can offer a Transaction - POST request\n\nThe request should have Authorization\nThe request header should be signed by the Public Key of the by field in the transaction\n\n\nfetch the list of Transactions - GET request\n\n/block\n\noffer a [schema::Block] - POST request\n\nThe request should have Authorization\nThe [schema::Block::transaction_list] of the block should be a subset of [schema::Db::pending_transactions]\n\n\nfetch the last accepted [schema::Block] - GET request\n\nAuthorization: The request header should have Bearer JWT.Token signed with Student Public Key\nQuestions\nThis all sound complicated!\n\nI've drawn inspiration from actual Bitcoin transactions and warp. The simplicity of the system is how little interfaces it has.\nDon't know where to start? Gradecoin uses RESTful API; simple curl commands or even your browser will work! This website can help as well.\nJWT Debugger and the corresponding RFC\nRemember that you are absolutely encouraged to grab off-the-shelf implementations for every cryptography primitive you will use. You can start by finding a code snippet to generate a RSA keypair?\n\nI found a bug!\nThank you! Please let me know so we can solve it.\nI hacked the server!\nThat wasn't supposed to happen :( I did not place any intentional vulnerabilities to the system so if you cracked something, it was not intended. Please don't abuse it and let me know so I can patch it.\nSubmission?\nAt the end of the simulation, your Gradecoin balance will be your grade. I will also expect a unique client programmed in either;\n\nc\nc++\nperl\nrust\npython\nrandom assortment of bash scripts\n\nIf your favourite programming language is missing please let me know 🤷?\nCan my friends play?\nSadly, no. Student's who are enrolled to the class will receive one-time-passwords for authentication.\nHow and or Why?\n\nBuilt, with Rust\n\n","id":"https://gradecoin.xyz/","title":"Gradecoin"},"https://gradecoin.xyz/block-docs/":{"body":"A block that was proposed to commit Transactions in transaction_list to the\nledger with a nonce that made hash valid; 6 zeroes at the left hand side of the\nhash (24 bytes).\nWe are mining using blake2s algorithm, which produces 256 bit hashes. Hash/second is roughly 20x10^3 on my machine, a new block can be mined in around 4-6 minutes.\nRequests\nGET\nA HTTP GET request to /block endpoint will return the latest mined block.\nPOST\nA HTTP POST request with Authorization using JWT will allow you to propose your own blocks.\nFields\ntransaction_list: [array of Fingerprints]\nnonce: unsigned 32-bit integer\ntimestamp: ISO 8601 &lt;date&gt;T&lt;time&gt;\nhash: String\n\nISO 8601 Reference\n","id":"https://gradecoin.xyz/block-docs/","title":"Blocks"},"https://gradecoin.xyz/jwt/":{"body":"\nJSON Web Tokens are representations of claims, or authorization proofs that fit into the Header of HTTP requests.\n\nHow?\nJWTs are used as the MAC of operations that require authorization:\n\nblock proposal\ntransaction proposal.\n\nThey are send alongside the JSON request body in the Header;\nAuthorization: Bearer aaaaaa.bbbbbb.ccccc\n\nGradecoin uses 3 fields for the JWTs;\n{\n\"tha\": \"Hash of the payload, check invididual references\",\n\"iat\": \"Issued At, Unix Time\",\n\"exp\": \"Expiration Time, epoch\"\n}\n\n\ntha is explained in blocks and transactions documentations.\niat when the JWT was created in Unix Time format\nexp when the JWT will expire &amp; be rejected in Unix Time\n\nAlgorithm\nWe are using RS256, RSASSA-PKCS1-v1_5 using SHA-256. The JWTs you encode with your private RSA key will be decoded using the public key you have authenticated with. You can see how the process works here.\nReferences\n\nRFC, the ultimate reference\nJWT Debugger\n\n","id":"https://gradecoin.xyz/jwt/","title":"JWT"},"https://gradecoin.xyz/register-docs/":{"body":"POST request to /register endpoint\nLets a user to authenticate themselves to the system.\nOnly people who are enrolled to the class can open Gradecoin accounts.\nThis is enforced with your Student ID and a one time password you will receive.\nAuthentication Process\n\nGradecoin's Public Key (gradecoin_public_key) is listed on our Moodle page.\nYou pick a short temporary key (k_temp)\nCreate a JSON object (auth_plaintext) with your metu_id and public key in base64 (PEM) format (S_PK) reference\n\n{\n    \"student_id\": \"e12345\",\n    \"passwd\": \"15 char secret\",\n    \"public_key\": \"---BEGIN PUBLIC KEY...\"\n}\n\n\nPick a random IV.\nEncrypt the serialized string of auth_plaintext with 128 bit block AES in CBC mode with Pkcs7 padding using the temporary key (k_temp), the result is auth_ciphertext. Encode this with base64.\nThe temporary key you have picked k_temp is encrypted using RSA with OAEP padding scheme\nusing SHA-256 with gradecoin_public_key, giving us key_ciphertext. Encode this with base 64.\nThe payload JSON object (auth_request) can be serialized now:\n\n{\n    \"c\": \"auth_ciphertext\",\n    \"iv\": \"hexadecimal\",\n    \"key\": \"key_ciphertext\"\n}\n\nIf your authentication process was valid, you will be given access and your public key fingerprint that is your address.\n","id":"https://gradecoin.xyz/register-docs/","title":"Register"},"https://gradecoin.xyz/transaction-docs/":{"body":"A transaction request between source and target to move amount Gradecoin.\nRequests\nGET\nA HTTP GET request to /transaction endpoint will return the current list of pending transactions.\nPOST\nA HTTP POST request with Authorization using JWT to /transaction will allow you to propose your own transactions.\nFields\nby: Fingerprint\nsource: Fingerprint\ntarget: Fingerprint\namount: unsigned 16 bit integer\ntimestamp: ISO 8601 &lt;date&gt;T&lt;time&gt;\n","id":"https://gradecoin.xyz/transaction-docs/","title":"Transactions"}},"docInfo":{"https://gradecoin.xyz/":{"body":371,"title":1},"https://gradecoin.xyz/block-docs/":{"body":74,"title":1},"https://gradecoin.xyz/jwt/":{"body":96,"title":1},"https://gradecoin.xyz/register-docs/":{"body":121,"title":1},"https://gradecoin.xyz/transaction-docs/":{"body":44,"title":1}},"length":5},"lang":"English"};
\ No newline at end of file
diff --git a/site/public/transaction-docs/index.html b/site/public/transaction-docs/index.html
index 1b85931..6550a96 100644
--- a/site/public/transaction-docs/index.html
+++ b/site/public/transaction-docs/index.html
@@ -66,15 +66,52 @@
         
         
         
+        
+        <div class="toc">
+            <div class="toc-sticky">
+                
+                <div class="toc-item">
+                    <a class="subtext" href="https://gradecoin.xyz/transaction-docs/#requests">Requests</a>
+                </div>
+                
+                
+                <div class="toc-item-child">
+                    <a class="subtext" href="https://gradecoin.xyz/transaction-docs/#get"><small>- GET</small></a>
+                </div>
+                
+                <div class="toc-item-child">
+                    <a class="subtext" href="https://gradecoin.xyz/transaction-docs/#post"><small>- POST</small></a>
+                </div>
+                
+                
+                
+                <div class="toc-item">
+                    <a class="subtext" href="https://gradecoin.xyz/transaction-docs/#fields">Fields</a>
+                </div>
+                
+                
+            </div>
+        </div>
+        
+        
 
         <div class="content text">
             
 <div class="heading-text">Transaction documentation</div>
-<p>Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod
-tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At
-vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd
-ubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.</p>
-
+<p>A transaction request between <code>source</code> and <code>target</code> to move <code>amount</code> Gradecoin.</p>
+<h1 id="requests">Requests</h1>
+<h2 id="get">GET</h2>
+<p>A HTTP <code>GET</code> request to <a href="/transaction">/transaction</a> endpoint will return the current list of pending transactions.</p>
+<h2 id="post">POST</h2>
+<p>A HTTP <code>POST</code> request with Authorization using JWT to <a href="/transactions">/transaction</a> will allow you to propose your own transactions.</p>
+<h1 id="fields">Fields</h1>
+<pre style="background-color:#ffffff;">
+<code><span style="color:#545052;">by: Fingerprint
+source: Fingerprint
+target: Fingerprint
+amount: unsigned 16 bit integer
+timestamp: ISO 8601 &lt;date&gt;T&lt;time&gt;
+</span></code></pre>
 
         </div>
 
diff --git a/src/handlers.rs b/src/handlers.rs
index 7135190..5110bd5 100644
--- a/src/handlers.rs
+++ b/src/handlers.rs
@@ -110,7 +110,7 @@ pub async fn authenticate_user(
         .expect("failed to decrypt");
 
     // decrypt c using key dec_key
-    let cipher = Aes128Cbc::new_var(&temp_key, &request.iv).unwrap();
+    let cipher = Aes128Cbc::new_var(&temp_key, &request.iv.as_bytes()).unwrap();
     let auth_plaintext = cipher
         .decrypt_vec(&base64::decode(request.c).unwrap())
         .unwrap();
diff --git a/src/schema.rs b/src/schema.rs
index af10b4d..33dc301 100644
--- a/src/schema.rs
+++ b/src/schema.rs
@@ -195,7 +195,7 @@ pub struct AuthRequest {
 #[derive(Serialize, Deserialize, Debug)]
 pub struct InitialAuthRequest {
     pub c: String,
-    pub iv: [u8; 32],
+    pub iv: String,
     pub key: String,
 }
 
-- 
cgit v1.2.3-70-g09d2