786 lines
24 KiB
HTML
786 lines
24 KiB
HTML
<!DOCTYPE html>
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<html lang="it">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>MEB - Decryption Tool</title>
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<style>
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* {
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margin: 0;
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padding: 0;
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box-sizing: border-box;
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}
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body {
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||
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
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background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
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min-height: 100vh;
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color: #e4e4e4;
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padding: 20px;
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}
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.container {
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max-width: 900px;
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margin: 0 auto;
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}
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header {
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text-align: center;
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margin-bottom: 40px;
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padding: 20px;
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||
}
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header h1 {
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font-size: 2.5rem;
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color: #00d4ff;
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text-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
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margin-bottom: 10px;
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}
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header p {
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color: #888;
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font-size: 1rem;
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}
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.card {
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background: rgba(255, 255, 255, 0.05);
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border-radius: 16px;
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padding: 30px;
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margin-bottom: 20px;
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backdrop-filter: blur(10px);
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border: 1px solid rgba(255, 255, 255, 0.1);
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box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
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}
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.card h2 {
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color: #00d4ff;
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margin-bottom: 20px;
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font-size: 1.3rem;
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display: flex;
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align-items: center;
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gap: 10px;
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}
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.card h2 .icon {
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font-size: 1.5rem;
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}
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/* Drop Zone */
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.drop-zone {
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border: 2px dashed rgba(0, 212, 255, 0.4);
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border-radius: 12px;
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padding: 40px;
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text-align: center;
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||
cursor: pointer;
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transition: all 0.3s ease;
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background: rgba(0, 212, 255, 0.05);
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||
}
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.drop-zone:hover,
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.drop-zone.dragover {
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border-color: #00d4ff;
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background: rgba(0, 212, 255, 0.15);
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transform: scale(1.01);
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}
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.drop-zone .icon {
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font-size: 3rem;
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margin-bottom: 15px;
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display: block;
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}
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.drop-zone p {
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color: #aaa;
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margin-bottom: 10px;
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}
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.drop-zone .hint {
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font-size: 0.85rem;
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color: #666;
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}
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/* File Input Hidden */
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#fileInput {
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display: none;
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}
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/* Key Input */
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.key-section {
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margin-top: 20px;
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}
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.input-group {
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display: flex;
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gap: 10px;
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align-items: center;
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}
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.input-group input {
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flex: 1;
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padding: 14px 18px;
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border: 1px solid rgba(255, 255, 255, 0.2);
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border-radius: 8px;
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background: rgba(0, 0, 0, 0.3);
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color: #fff;
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font-size: 1rem;
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font-family: 'Consolas', 'Monaco', monospace;
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transition: all 0.3s ease;
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}
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.input-group input:focus {
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outline: none;
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border-color: #00d4ff;
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box-shadow: 0 0 15px rgba(0, 212, 255, 0.3);
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}
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.input-group input::placeholder {
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color: #666;
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}
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/* Buttons */
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.btn {
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padding: 14px 28px;
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border: none;
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border-radius: 8px;
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font-size: 1rem;
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font-weight: 600;
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cursor: pointer;
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transition: all 0.3s ease;
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display: inline-flex;
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align-items: center;
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gap: 8px;
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}
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.btn-primary {
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background: linear-gradient(135deg, #00d4ff, #0099cc);
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color: #000;
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}
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.btn-primary:hover {
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transform: translateY(-2px);
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box-shadow: 0 8px 25px rgba(0, 212, 255, 0.4);
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}
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.btn-primary:disabled {
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background: #444;
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color: #888;
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cursor: not-allowed;
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transform: none;
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box-shadow: none;
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}
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.btn-secondary {
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background: rgba(255, 255, 255, 0.1);
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color: #fff;
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border: 1px solid rgba(255, 255, 255, 0.2);
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}
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.btn-secondary:hover {
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background: rgba(255, 255, 255, 0.2);
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}
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.btn-success {
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background: linear-gradient(135deg, #00ff88, #00cc6a);
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color: #000;
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}
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.btn-success:hover {
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box-shadow: 0 8px 25px rgba(0, 255, 136, 0.4);
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}
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/* File Info */
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.file-info {
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display: none;
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margin-top: 20px;
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padding: 15px;
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background: rgba(0, 212, 255, 0.1);
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border-radius: 8px;
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border-left: 4px solid #00d4ff;
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}
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.file-info.visible {
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display: block;
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animation: slideIn 0.3s ease;
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}
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.file-info .file-name {
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font-weight: 600;
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color: #00d4ff;
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word-break: break-all;
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}
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.file-info .file-size {
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color: #888;
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font-size: 0.9rem;
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margin-top: 5px;
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}
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/* Status Messages */
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.status {
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margin-top: 20px;
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padding: 15px;
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border-radius: 8px;
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display: none;
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animation: slideIn 0.3s ease;
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}
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.status.visible {
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display: block;
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}
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.status.success {
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background: rgba(0, 255, 136, 0.15);
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border: 1px solid rgba(0, 255, 136, 0.3);
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color: #00ff88;
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}
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.status.error {
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background: rgba(255, 68, 68, 0.15);
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border: 1px solid rgba(255, 68, 68, 0.3);
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color: #ff4444;
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}
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.status.info {
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background: rgba(0, 212, 255, 0.15);
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border: 1px solid rgba(0, 212, 255, 0.3);
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color: #00d4ff;
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}
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/* Preview Section */
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.preview-section {
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display: none;
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margin-top: 20px;
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}
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.preview-section.visible {
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display: block;
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animation: slideIn 0.3s ease;
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}
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.preview-header {
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display: flex;
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justify-content: space-between;
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align-items: center;
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margin-bottom: 15px;
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}
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.preview-content {
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background: rgba(0, 0, 0, 0.4);
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border-radius: 8px;
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padding: 15px;
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max-height: 400px;
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overflow: auto;
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font-family: 'Consolas', 'Monaco', monospace;
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font-size: 0.85rem;
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line-height: 1.5;
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white-space: pre-wrap;
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word-break: break-all;
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}
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.preview-content::-webkit-scrollbar {
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width: 8px;
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height: 8px;
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}
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.preview-content::-webkit-scrollbar-track {
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background: rgba(255, 255, 255, 0.05);
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border-radius: 4px;
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}
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.preview-content::-webkit-scrollbar-thumb {
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background: rgba(0, 212, 255, 0.4);
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border-radius: 4px;
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}
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/* Action Buttons */
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.action-buttons {
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display: flex;
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gap: 10px;
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margin-top: 20px;
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flex-wrap: wrap;
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}
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/* Algorithm Info */
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.algo-info {
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margin-top: 20px;
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padding: 15px;
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background: rgba(255, 193, 7, 0.1);
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border-radius: 8px;
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border-left: 4px solid #ffc107;
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font-size: 0.9rem;
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}
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.algo-info code {
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background: rgba(0, 0, 0, 0.3);
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padding: 2px 6px;
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border-radius: 4px;
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color: #ffc107;
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}
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/* Animations */
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@keyframes slideIn {
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from {
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opacity: 0;
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transform: translateY(-10px);
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}
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to {
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opacity: 1;
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transform: translateY(0);
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}
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}
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/* Responsive */
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@media (max-width: 600px) {
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header h1 {
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font-size: 1.8rem;
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}
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.card {
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padding: 20px;
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}
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.input-group {
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flex-direction: column;
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}
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.input-group input {
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width: 100%;
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}
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.action-buttons {
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flex-direction: column;
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}
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.btn {
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width: 100%;
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justify-content: center;
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}
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}
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/* Toggle visibility button */
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.toggle-visibility {
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background: none;
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border: none;
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color: #888;
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cursor: pointer;
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padding: 10px;
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font-size: 1.2rem;
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transition: color 0.3s ease;
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}
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.toggle-visibility:hover {
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color: #00d4ff;
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}
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/* Loading spinner */
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.spinner {
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display: inline-block;
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width: 16px;
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height: 16px;
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border: 2px solid rgba(255, 255, 255, 0.3);
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border-radius: 50%;
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border-top-color: #fff;
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animation: spin 0.8s linear infinite;
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}
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@keyframes spin {
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to { transform: rotate(360deg); }
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}
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</style>
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</head>
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<body>
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<div class="container">
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<header>
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<h1>🔐 MEB Decryption Tool</h1>
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<p>Decripta i file CSV criptati con AES-256-GCM</p>
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</header>
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<!-- Upload Section -->
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<div class="card">
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<h2><span class="icon">📁</span> Importa File Criptato</h2>
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<div class="drop-zone" id="dropZone">
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<span class="icon">⬆️</span>
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<p>Trascina qui il file criptato o clicca per selezionarlo</p>
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<span class="hint">Formati supportati: .csv (criptati)</span>
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</div>
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<input type="file" id="fileInput" accept=".csv,.bin,.enc">
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<div class="file-info" id="fileInfo">
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<div class="file-name" id="fileName"></div>
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<div class="file-size" id="fileSize"></div>
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</div>
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</div>
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<!-- Key Section -->
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<div class="card">
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<h2><span class="icon">🔑</span> Chiave di Decriptazione</h2>
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<div class="key-section">
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<div class="input-group">
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<input type="password" id="decryptKey" placeholder="Inserisci la chiave di decriptazione (token)">
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<button class="toggle-visibility" id="toggleKey" title="Mostra/Nascondi chiave">👁️</button>
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</div>
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</div>
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<div class="algo-info">
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<strong>ℹ️ Formato chiave supportato:</strong><br>
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• Token esadecimale (48 caratteri): <code>217af80a15d54289...</code><br>
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• Qualsiasi stringa (verrà hashata con SHA-256)<br>
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• Algoritmo: <code>AES-256-GCM</code> con IV (12 byte) + Auth Tag (16 byte)
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</div>
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</div>
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<!-- Decrypt Button -->
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<div class="card">
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<button class="btn btn-primary" id="decryptBtn" disabled>
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<span id="decryptBtnText">🔓 Decripta File</span>
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</button>
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<div class="status" id="status"></div>
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<!-- Preview Section -->
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<div class="preview-section" id="previewSection">
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<div class="preview-header">
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<h3>📄 Anteprima Contenuto</h3>
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<span id="previewLines"></span>
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</div>
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<div class="preview-content" id="previewContent"></div>
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<div class="action-buttons">
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<button class="btn btn-success" id="downloadBtn">
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⬇️ Scarica File Decriptato
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</button>
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<button class="btn btn-secondary" id="copyBtn">
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📋 Copia negli Appunti
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</button>
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<button class="btn btn-secondary" id="resetBtn">
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🔄 Nuovo File
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</button>
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</div>
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</div>
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</div>
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</div>
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<script>
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// ==================== CRYPTO FUNCTIONS (Same as crypt.js) ====================
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/**
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* Normalizza qualsiasi chiave a 32 byte per AES-256
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* Replica la logica di normalizeKey() in crypt.js
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*/
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async function normalizeKey(customKey) {
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if (!customKey) {
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throw new Error("Chiave non fornita");
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}
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// Se è hex di 64 caratteri, converti direttamente
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if (/^[0-9a-fA-F]{64}$/.test(customKey)) {
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return hexToArrayBuffer(customKey);
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}
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// Se è hex di 48 caratteri (token standard), hash con SHA-256
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// Altrimenti hash SHA-256 per ottenere 32 byte
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const encoder = new TextEncoder();
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const data = encoder.encode(customKey);
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const hashBuffer = await crypto.subtle.digest('SHA-256', data);
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return hashBuffer;
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}
|
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/**
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* Converte stringa hex in ArrayBuffer
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*/
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function hexToArrayBuffer(hex) {
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const bytes = new Uint8Array(hex.length / 2);
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for (let i = 0; i < hex.length; i += 2) {
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bytes[i / 2] = parseInt(hex.substr(i, 2), 16);
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}
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return bytes.buffer;
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}
|
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/**
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* Decripta dati con AES-256-GCM
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* Struttura file: [IV(12 byte) + TAG(16 byte) + CIPHERTEXT]
|
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*/
|
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async function decryptAES256GCM(encryptedBuffer, keyBuffer) {
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const encryptedArray = new Uint8Array(encryptedBuffer);
|
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|
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if (encryptedArray.length < 28) {
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throw new Error("File troppo corto o corrotto");
|
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}
|
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|
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// Estrai IV (primi 12 byte)
|
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const iv = encryptedArray.slice(0, 12);
|
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|
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// Estrai Auth Tag (byte 12-28)
|
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const tag = encryptedArray.slice(12, 28);
|
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|
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// Estrai ciphertext (resto del file)
|
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const ciphertext = encryptedArray.slice(28);
|
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|
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// In WebCrypto, il tag è concatenato al ciphertext per la decrittazione
|
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const ciphertextWithTag = new Uint8Array(ciphertext.length + tag.length);
|
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ciphertextWithTag.set(ciphertext);
|
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ciphertextWithTag.set(tag, ciphertext.length);
|
||
|
||
// Importa la chiave
|
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const cryptoKey = await crypto.subtle.importKey(
|
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'raw',
|
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keyBuffer,
|
||
{ name: 'AES-GCM' },
|
||
false,
|
||
['decrypt']
|
||
);
|
||
|
||
// Decripta
|
||
const decryptedBuffer = await crypto.subtle.decrypt(
|
||
{
|
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name: 'AES-GCM',
|
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iv: iv,
|
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tagLength: 128 // 16 byte = 128 bit
|
||
},
|
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cryptoKey,
|
||
ciphertextWithTag
|
||
);
|
||
|
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return decryptedBuffer;
|
||
}
|
||
|
||
/**
|
||
* Controlla se il file è già in chiaro (CSV/testo)
|
||
*/
|
||
function isPlainText(buffer) {
|
||
const arr = new Uint8Array(buffer);
|
||
if (arr.length < 10) return false;
|
||
|
||
// soglia: se più del 10% dei byte nei primi 256 sono non stampabili, consideriamo binario
|
||
const maxCheck = Math.min(256, arr.length);
|
||
let nonPrintable = 0;
|
||
|
||
for (let i = 0; i < maxCheck; i++) {
|
||
const b = arr[i];
|
||
|
||
// caratteri ammessi: tab (9), newline (10), carriage return (13),
|
||
// spazio (32) fino a ~ carattere 126 (tilde)
|
||
const isAllowedWhitespace = b === 9 || b === 10 || b === 13;
|
||
const isPrintable = b >= 32 && b <= 126;
|
||
|
||
if (!(isAllowedWhitespace || isPrintable)) {
|
||
nonPrintable++;
|
||
}
|
||
}
|
||
|
||
const ratio = nonPrintable / maxCheck;
|
||
return ratio < 0.1; // se meno del 10% sono strani, lo consideriamo testo
|
||
}
|
||
|
||
// ==================== DOM ELEMENTS ====================
|
||
const dropZone = document.getElementById('dropZone');
|
||
const fileInput = document.getElementById('fileInput');
|
||
const fileInfo = document.getElementById('fileInfo');
|
||
const fileName = document.getElementById('fileName');
|
||
const fileSize = document.getElementById('fileSize');
|
||
const decryptKey = document.getElementById('decryptKey');
|
||
const toggleKey = document.getElementById('toggleKey');
|
||
const decryptBtn = document.getElementById('decryptBtn');
|
||
const decryptBtnText = document.getElementById('decryptBtnText');
|
||
const status = document.getElementById('status');
|
||
const previewSection = document.getElementById('previewSection');
|
||
const previewContent = document.getElementById('previewContent');
|
||
const previewLines = document.getElementById('previewLines');
|
||
const downloadBtn = document.getElementById('downloadBtn');
|
||
const copyBtn = document.getElementById('copyBtn');
|
||
const resetBtn = document.getElementById('resetBtn');
|
||
|
||
// ==================== STATE ====================
|
||
let selectedFile = null;
|
||
let decryptedContent = null;
|
||
|
||
// ==================== EVENT LISTENERS ====================
|
||
|
||
// Drop zone click
|
||
dropZone.addEventListener('click', () => fileInput.click());
|
||
|
||
// Drag and drop
|
||
dropZone.addEventListener('dragover', (e) => {
|
||
e.preventDefault();
|
||
dropZone.classList.add('dragover');
|
||
});
|
||
|
||
dropZone.addEventListener('dragleave', () => {
|
||
dropZone.classList.remove('dragover');
|
||
});
|
||
|
||
dropZone.addEventListener('drop', (e) => {
|
||
e.preventDefault();
|
||
dropZone.classList.remove('dragover');
|
||
const files = e.dataTransfer.files;
|
||
if (files.length > 0) {
|
||
handleFile(files[0]);
|
||
}
|
||
});
|
||
|
||
// File input change
|
||
fileInput.addEventListener('change', (e) => {
|
||
if (e.target.files.length > 0) {
|
||
handleFile(e.target.files[0]);
|
||
}
|
||
});
|
||
|
||
// Toggle key visibility
|
||
toggleKey.addEventListener('click', () => {
|
||
const type = decryptKey.type === 'password' ? 'text' : 'password';
|
||
decryptKey.type = type;
|
||
toggleKey.textContent = type === 'password' ? '👁️' : '🙈';
|
||
});
|
||
|
||
// Key input
|
||
decryptKey.addEventListener('input', updateDecryptButton);
|
||
|
||
// Decrypt button
|
||
decryptBtn.addEventListener('click', decryptFile);
|
||
|
||
// Download button
|
||
downloadBtn.addEventListener('click', downloadDecrypted);
|
||
|
||
// Copy button
|
||
copyBtn.addEventListener('click', copyToClipboard);
|
||
|
||
// Reset button
|
||
resetBtn.addEventListener('click', resetAll);
|
||
|
||
// ==================== FUNCTIONS ====================
|
||
|
||
function handleFile(file) {
|
||
selectedFile = file;
|
||
fileName.textContent = `📄 ${file.name}`;
|
||
fileSize.textContent = `Dimensione: ${formatSize(file.size)}`;
|
||
fileInfo.classList.add('visible');
|
||
updateDecryptButton();
|
||
hideStatus();
|
||
previewSection.classList.remove('visible');
|
||
decryptedContent = null;
|
||
}
|
||
|
||
function formatSize(bytes) {
|
||
if (bytes < 1024) return bytes + ' B';
|
||
if (bytes < 1024 * 1024) return (bytes / 1024).toFixed(2) + ' KB';
|
||
return (bytes / (1024 * 1024)).toFixed(2) + ' MB';
|
||
}
|
||
|
||
function updateDecryptButton() {
|
||
decryptBtn.disabled = !(selectedFile && decryptKey.value.trim());
|
||
}
|
||
|
||
function showStatus(message, type) {
|
||
status.textContent = message;
|
||
status.className = `status visible ${type}`;
|
||
}
|
||
|
||
function hideStatus() {
|
||
status.classList.remove('visible');
|
||
}
|
||
|
||
async function decryptFile() {
|
||
if (!selectedFile || !decryptKey.value.trim()) return;
|
||
|
||
// Show loading
|
||
decryptBtnText.innerHTML = '<span class="spinner"></span> Decrittazione...';
|
||
decryptBtn.disabled = true;
|
||
|
||
try {
|
||
// Read file
|
||
const fileBuffer = await selectedFile.arrayBuffer();
|
||
|
||
// Check if already plain text
|
||
if (isPlainText(fileBuffer)) {
|
||
decryptedContent = new TextDecoder().decode(fileBuffer);
|
||
showStatus('⚠️ Il file è già in chiaro (non criptato)', 'info');
|
||
} else {
|
||
// Normalize key
|
||
const keyBuffer = await normalizeKey(decryptKey.value.trim());
|
||
|
||
// Decrypt
|
||
const decryptedBuffer = await decryptAES256GCM(fileBuffer, keyBuffer);
|
||
decryptedContent = new TextDecoder().decode(decryptedBuffer);
|
||
|
||
showStatus('✅ File decriptato con successo!', 'success');
|
||
}
|
||
|
||
// Show preview
|
||
showPreview(decryptedContent);
|
||
|
||
} catch (error) {
|
||
console.error('Decryption error:', error);
|
||
|
||
let errorMsg = '❌ Errore nella decrittazione: ';
|
||
if (error.message.includes('tag') || error.message.includes('decrypt')) {
|
||
errorMsg += 'Chiave non valida o file corrotto';
|
||
} else {
|
||
errorMsg += error.message;
|
||
}
|
||
|
||
showStatus(errorMsg, 'error');
|
||
previewSection.classList.remove('visible');
|
||
} finally {
|
||
decryptBtnText.innerHTML = '🔓 Decripta File';
|
||
updateDecryptButton();
|
||
}
|
||
}
|
||
|
||
function showPreview(content) {
|
||
const lines = content.split('\n');
|
||
const previewText = lines.slice(0, 50).join('\n');
|
||
|
||
previewContent.textContent = previewText;
|
||
previewLines.textContent = `${lines.length} righe totali`;
|
||
|
||
if (lines.length > 50) {
|
||
previewContent.textContent += '\n\n... [Anteprima troncata a 50 righe] ...';
|
||
}
|
||
|
||
previewSection.classList.add('visible');
|
||
}
|
||
|
||
function downloadDecrypted() {
|
||
if (!decryptedContent || !selectedFile) return;
|
||
|
||
const blob = new Blob([decryptedContent], { type: 'text/csv;charset=utf-8' });
|
||
const url = URL.createObjectURL(blob);
|
||
|
||
const a = document.createElement('a');
|
||
a.href = url;
|
||
a.download = selectedFile.name.replace('.csv', '_decrypted.csv');
|
||
document.body.appendChild(a);
|
||
a.click();
|
||
document.body.removeChild(a);
|
||
URL.revokeObjectURL(url);
|
||
|
||
showStatus('✅ File scaricato!', 'success');
|
||
}
|
||
|
||
async function copyToClipboard() {
|
||
if (!decryptedContent) return;
|
||
|
||
try {
|
||
await navigator.clipboard.writeText(decryptedContent);
|
||
showStatus('✅ Contenuto copiato negli appunti!', 'success');
|
||
} catch (error) {
|
||
showStatus('❌ Errore nella copia: ' + error.message, 'error');
|
||
}
|
||
}
|
||
|
||
function resetAll() {
|
||
selectedFile = null;
|
||
decryptedContent = null;
|
||
fileInput.value = '';
|
||
decryptKey.value = '';
|
||
fileInfo.classList.remove('visible');
|
||
previewSection.classList.remove('visible');
|
||
hideStatus();
|
||
updateDecryptButton();
|
||
}
|
||
</script>
|
||
</body>
|
||
</html>
|