hash-one.io/index.html at main · deepak2004rps/hash-one.io · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Hash-One: Introduction</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            line-height: 1.6;
            margin: 0;
            padding: 0;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: #333;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }

        /* Navigation Header */
        .nav-header {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.2);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 0 2rem;
        }

        .nav-links {
            display: flex;
            gap: 2rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            color: white;
            text-decoration: none;
            padding: 0.5rem 1rem;
            border-radius: 25px;
            transition: all 0.3s ease;
            font-weight: 500;
            background: rgba(255, 255, 255, 0.1);
        }

        .nav-links a:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: translateY(-2px);
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
        }

        .nav-links a.active {
            background: rgba(255, 255, 255, 0.3);
            font-weight: bold;
        }

        header {
            background: rgba(51, 51, 51, 0.9);
            backdrop-filter: blur(10px);
            color: white;
            padding: 2rem 0;
            text-align: center;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }

        .container {
            width: 90%;
            max-width: 1200px;
            margin: auto;
            overflow: hidden;
            padding: 2rem 0;
            flex-grow: 1;
        }

        .intro-box {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            padding: 2.5rem;
            border-radius: 20px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
            margin-bottom: 2rem;
        }

        .intro-box h1 {
            color: #007bff;
            text-align: center;
            margin-bottom: 1.5rem;
            font-size: 2.5em;
        }

        .intro-box p {
            font-size: 1.1em;
            text-align: justify;
            margin-bottom: 1.5rem;
        }

        .intro-box h2 {
            border-bottom: 3px solid #007bff;
            padding-bottom: 0.5rem;
            margin-top: 2.5rem;
            color: #333;
            font-size: 1.8em;
        }

        .features {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 25px;
            margin: 2rem 0;
        }

        .feature-card {
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
            padding: 2rem;
            border-radius: 15px;
            border-left: 5px solid #007bff;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
        }

        .feature-card h3 {
            color: #007bff;
            margin-top: 0;
            font-size: 1.3em;
        }

        /* Workflow Diagram */
        .workflow-section {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            padding: 2.5rem;
            border-radius: 20px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
            margin-bottom: 2rem;
            text-align: center;
        }

        .workflow-diagram {
            display: flex;
            justify-content: center;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            margin: 2rem 0;
        }

        .workflow-step {
            background: linear-gradient(135deg, #007bff, #0056b3);
            color: white;
            padding: 1.5rem;
            border-radius: 15px;
            min-width: 150px;
            box-shadow: 0 10px 25px rgba(0, 123, 255, 0.3);
            transition: transform 0.3s ease;
        }

        .workflow-step:hover {
            transform: scale(1.05);
        }

        .workflow-arrow {
            font-size: 2em;
            color: #007bff;
            margin: 0 10px;
        }

        .call-to-action {
            text-align: center;
            margin: 3rem 0 2rem 0;
            padding: 3rem;
            background: linear-gradient(135deg, #007bff, #0056b3);
            border-radius: 20px;
            color: white;
            box-shadow: 0 20px 40px rgba(0, 123, 255, 0.3);
        }

        .call-to-action h2 {
            color: white;
            border: none;
            margin-top: 0;
            margin-bottom: 1rem;
            font-size: 2.2em;
        }

        .button {
            display: inline-block;
            padding: 18px 36px;
            background-color: white;
            color: #007bff;
            text-decoration: none;
            border-radius: 30px;
            font-size: 1.3em;
            font-weight: bold;
            transition: all 0.3s ease;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
            margin: 0 10px;
        }

        .button:hover {
            background-color: #f8f9fa;
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
        }

        .specifications {
            background: linear-gradient(135deg, #e9ecef, #f8f9fa);
            padding: 2rem;
            border-radius: 15px;
            margin: 2rem 0;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
        }

        .spec-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 15px;
            list-style: none;
            padding: 0;
        }

        .spec-list li {
            padding: 12px;
            background: white;
            border-radius: 8px;
            font-weight: bold;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
            transition: transform 0.2s ease;
        }

        .spec-list li:hover {
            transform: translateY(-2px);
        }

        .note-box {
            background: linear-gradient(135deg, #fff3cd, #ffeaa7);
            color: #856404;
            border: 1px solid #ffeeba;
            padding: 1.5rem;
            border-radius: 15px;
            margin-bottom: 1.5rem;
            text-align: left;
            box-shadow: 0 8px 20px rgba(255, 193, 7, 0.2);
        }

        /* References Section */
        .references-section {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            padding: 2.5rem;
            border-radius: 20px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
            margin-bottom: 2rem;
        }

        .references-section h2 {
            color: #007bff;
            border-bottom: 3px solid #007bff;
            padding-bottom: 0.5rem;
        }

        .reference-item {
            margin-bottom: 1rem;
            padding: 1rem;
            background: #f8f9fa;
            border-radius: 8px;
            border-left: 4px solid #007bff;
        }

        footer {
            background: rgba(51, 51, 51, 0.9);
            backdrop-filter: blur(10px);
            color: white;
            text-align: center;
            padding: 2rem 0;
            margin-top: auto;
        }

        @media (max-width: 768px) {
            .container {
                width: 95%;
                padding: 1rem 0;
            }

            .intro-box, .workflow-section, .references-section {
                padding: 1.5rem;
            }

            .nav-links {
                flex-direction: column;
                gap: 0.5rem;
                text-align: center;
            }

            .workflow-diagram {
                flex-direction: column;
            }

            .workflow-arrow {
                transform: rotate(90deg);
            }

            .button {
                display: block;
                margin: 10px auto;
                width: fit-content;
            }
        }
    </style>
</head>
<body>
    <!-- Navigation Header -->
    <div class="nav-header">
        <div class="nav-container">
            <ul class="nav-links">
                <li><a href="#" class="active">Introduction</a></li>
                <li><a href="html/hashone_generator_final.html">Generator Tool</a></li>
                <li><a href="#about">About Us</a></li>
            </ul>
        </div>
    </div>

    <header>
        <h1>Hash-One: A Lightweight Cryptographic Hash Function</h1>
        <p>Based on Sponge Construction with Non-Linear Feedback Shift Registers</p>
    </header>

    <div class="container">
        <div class="intro-box">
            <h1>Introduction to Hash-One</h1>
            <p>Hash-One is a lightweight cryptographic hash function designed specifically for constrained devices such as RFID tags, wireless sensors, and other embedded systems. This implementation is based on the research paper published in IET Information Security by Bilal et al. (2016).</p>

            <p>The function uses a <strong>sponge construction</strong> methodology, which involves two main phases: the <strong>absorbing phase</strong> where input file bits are mixed with the internal state, and the <strong>squeezing phase</strong> where the final fixed-length hash is extracted from the altered internal state.</p>

            <h2>Key Features</h2>
            <div class="features">
                <div class="feature-card">
                    <h3>🔧 Lightweight Design</h3>
                    <p>Optimized for constrained devices with minimal hardware requirements (1006 Gate Equivalents).</p>
                </div>
                <div class="feature-card">
                    <h3>🔒 Strong Security</h3>
                    <p>Provides 80-bit security against collision attacks and 160-bit preimage resistance.</p>
                </div>
                <div class="feature-card">
                    <h3>🌊 Avalanche Effect</h3>
                    <p>Even tiny changes in input result in completely different hash outputs.</p>
                </div>
                <div class="feature-card">
                    <h3>🧽 Sponge Construction</h3>
                    <p>Uses proven sponge methodology with non-linear feedback shift registers.</p>
                </div>
            </div>

            <h2>Technical Specifications</h2>
            <div class="specifications">
                <ul class="spec-list">
                    <li>State Size: 161 bits</li>
                    <li>Hash Output: 160 bits</li>
                    <li>Capacity: 160 bits</li>
                    <li>Rate: 1 bit</li>
                    <li>Security Level: 80 bits</li>
                    <li>Hardware Area: 1006 GE</li>
                </ul>
            </div>

            <h2>How It Works</h2>
            <p>Hash-One utilizes two non-linear feedback shift registers (NFSRs) of sizes 80 and 81 bits. The security is based on a permutation function that updates these registers using carefully designed Boolean functions. The internal state is initialized with the first 161 bits of the mathematical constant π (pi), ensuring a strong cryptographic foundation.</p>

            <p>The algorithm processes input files bit by bit, mixing them with the internal state through XOR operations. The avalanche effect ensures that even the smallest change in input produces a completely different hash output, making it ideal for integrity verification and digital document authentication.</p>
        </div>

        <!-- Workflow Diagram Section -->
        <div class="workflow-section">
            <h2>Hash-One Workflow</h2>
            <div class="workflow-diagram">
                <div class="workflow-step">
                    <h4>1. Initialize</h4>
                    <p>State with π bits</p>
                </div>
                <div class="workflow-arrow">→</div>
                <div class="workflow-step">
                    <h4>2. Absorb</h4>
                    <p>Input file bits</p>
                </div>
                <div class="workflow-arrow">→</div>
                <div class="workflow-step">
                    <h4>3. Process</h4>
                    <p>NFSR operations</p>
                </div>
                <div class="workflow-arrow">→</div>
                <div class="workflow-step">
                    <h4>4. Squeeze</h4>
                    <p>160-bit hash output</p>
                </div>
            </div>
            <div style="text-align: center; margin-top: 2rem;">
                <a href="html/workflow_detailed.html" class="button" style="background: linear-gradient(135deg, #28a745, #20c997);color:black; box-shadow: 0 8px 25px rgba(40, 167, 69, 0.3);">
                    📚 Detailed Workflow Explanation
                </a>
            </div>
        </div>

        <div class="call-to-action">
            <h2>Try Hash-One Generator!</h2>
            <div class="note-box">
                <strong>⚠️ Please Note:</strong> This implementation is a proof-of-concept and processes files bit-by-bit in the browser. For optimal performance, it is best suited for smaller files (less than 100 KB). Larger files may cause the browser to become unresponsive.
            </div>
            <p style="text-align: center;">Ready to generate secure hashes for your files? Click the button below to access the Hash-One generator tool.</p>
            <a href="html/hashone_generator_final.html" class="button">🚀 Go to Hash Generator</a>
        </div>

        <!-- References Section -->
        <div class="references-section">
            <h2>References</h2>
            <div class="reference-item">
                <strong>Primary Research Paper:</strong><br>
                Bilal, M., Shabbir, M., Tahir, Y., Shah, T., Bashir, H., & Abbas, G. (2016). Hash-One: A lightweight cryptographic hash function. <em>IET Information Security</em>, <em>10</em>(5), 225-231. <a href="https://doi.org/10.1049/iet-ifs.2015.0385" target="_blank" style="color: #007bff;">https://doi.org/10.1049/iet-ifs.2015.0385</a>
            </div>
            <div class="reference-item">
                <strong>Sponge Construction Reference:</strong><br>
                Bertoni, G., Daemen, J., Peeters, M., & Van Assche, G. (2011). Cryptographic sponge functions. Submission to NIST (round 3).
            </div>
        </div>

        <!-- About Us Section -->
        <div class="intro-box" id="about">
            <h2>About This Project</h2>
            <p>This Hash-One implementation is developed as part of academic coursework at Amrita Vishwa Vidyapeetham, Coimbatore. The project demonstrates the practical implementation of lightweight cryptographic hash functions for educational and research purposes.</p>

            <p><strong>Course Integration:</strong> This project is part of 20CYS202 - User Interface Design and 20CYS205 - Modern Cryptography, showcasing the intersection of cryptographic algorithms and user experience design.</p>

            <p><strong>Educational Purpose:</strong> While this implementation follows the research specifications, it is primarily designed for educational demonstration. It should not be used in production cryptographic applications without further security analysis.</p>
        </div>
    </div>

    <footer>
        <p>
            Copyright © 2023 | Deepak Kumar S<br>
            B.Tech CSE(CYS)<br>
            Part of 20CYS202 - User Interface Design and 20CYS205 - Modern Cryptography<br>
            Amrita Vishwa Vidyapeetham, Coimbatore
        </p>
    </footer>
</body>
</html>