mirror of
https://github.com/cliffe/BreakEscape.git
synced 2026-02-20 13:50:46 +00:00
feat(rfid): Enhance hex generation with improved hash-based approach for realistic card data
This commit is contained in:
Z. Cliffe Schreuders
@@ -1,6 +1,6 @@
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/**
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* RFID Minigame CSS
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* RFID Flipper-inspired RFID reader/cloner interface
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* RFID Flipper-inspired RFID reader/cloner interface (Pixel Art Style)
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*/
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/* Container */
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@@ -31,12 +31,49 @@
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width: 400px;
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height: 550px;
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background: #FF8200;
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border-radius: 20px;
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clip-path: polygon(
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0px calc(100% - 10px),
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2px calc(100% - 10px),
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2px calc(100% - 6px),
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4px calc(100% - 6px),
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4px calc(100% - 4px),
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6px calc(100% - 4px),
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6px calc(100% - 2px),
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10px calc(100% - 2px),
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10px 100%,
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calc(100% - 10px) 100%,
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calc(100% - 10px) calc(100% - 2px),
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calc(100% - 6px) calc(100% - 2px),
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calc(100% - 6px) calc(100% - 4px),
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calc(100% - 4px) calc(100% - 4px),
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calc(100% - 4px) calc(100% - 6px),
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calc(100% - 2px) calc(100% - 6px),
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calc(100% - 2px) calc(100% - 10px),
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100% calc(100% - 10px),
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100% 10px,
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calc(100% - 2px) 10px,
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calc(100% - 2px) 6px,
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calc(100% - 4px) 6px,
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calc(100% - 4px) 4px,
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calc(100% - 6px) 4px,
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calc(100% - 6px) 2px,
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calc(100% - 10px) 2px,
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calc(100% - 10px) 0px,
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10px 0px,
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10px 2px,
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6px 2px,
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6px 4px,
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4px 4px,
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4px 6px,
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2px 6px,
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2px 10px,
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0px 10px
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);
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box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
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padding: 20px;
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display: flex;
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flex-direction: column;
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font-family: 'Courier New', monospace;
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font-family: 'VT323', monospace;
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}
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/* Header */
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@@ -50,38 +87,42 @@
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}
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.flipper-logo {
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font-size: 14px;
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font-size: 20px;
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font-weight: bold;
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color: white;
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letter-spacing: 1px;
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letter-spacing: 2px;
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font-family: 'VT323', monospace;
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}
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.flipper-battery {
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font-size: 12px;
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font-size: 16px;
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color: white;
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font-family: 'VT323', monospace;
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}
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/* Screen */
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.flipper-screen {
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flex: 1;
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background: #333;
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border-radius: 10px;
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border: 2px solid rgba(0, 0, 0, 0.8);
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padding: 15px;
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color: white;
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font-size: 14px;
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font-size: 16px;
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overflow-y: auto;
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overflow-y: hidden;
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box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.5);
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display: flex;
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flex-direction: column;
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font-family: 'VT323', monospace;
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}
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/* Breadcrumb */
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.flipper-breadcrumb {
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font-size: 12px;
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font-size: 14px;
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color: #FFA500;
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margin-bottom: 15px;
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font-weight: bold;
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font-family: 'VT323', monospace;
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}
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/* Menu */
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@@ -94,14 +135,17 @@
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.flipper-menu-item {
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padding: 8px 10px;
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background: rgba(255, 255, 255, 0.05);
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border-radius: 5px;
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border: 2px solid rgba(255, 255, 255, 0.2);
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cursor: pointer;
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transition: background 0.2s;
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user-select: none;
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font-family: 'VT323', monospace;
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font-size: 16px;
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}
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.flipper-menu-item:hover {
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background: rgba(255, 255, 255, 0.15);
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border-color: rgba(255, 255, 255, 0.4);
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}
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/* Info Text */
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@@ -109,13 +153,16 @@
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color: white;
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margin: 10px 0;
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text-align: center;
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font-family: 'VT323', monospace;
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font-size: 16px;
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}
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.flipper-info-dim {
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color: #888;
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margin: 10px 0;
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text-align: center;
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font-size: 12px;
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font-size: 14px;
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font-family: 'VT323', monospace;
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}
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/* Card List */
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@@ -130,21 +177,23 @@
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/* Card Name */
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.flipper-card-name {
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font-size: 16px;
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font-size: 20px;
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font-weight: bold;
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color: #FFA500;
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margin: 10px 0;
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text-align: center;
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font-family: 'VT323', monospace;
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}
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/* Card Data */
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.flipper-card-data {
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background: rgba(0, 0, 0, 0.3);
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border: 2px solid rgba(0, 0, 0, 0.5);
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padding: 15px;
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border-radius: 8px;
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margin: 15px 0;
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font-size: 13px;
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font-size: 15px;
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line-height: 1.8;
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font-family: 'VT323', monospace;
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}
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.flipper-card-data div {
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@@ -164,18 +213,18 @@
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padding: 12px;
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background: #FF8200;
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color: white;
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border: none;
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border-radius: 8px;
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font-size: 14px;
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border: 2px solid rgba(0, 0, 0, 0.3);
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font-size: 16px;
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font-weight: bold;
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cursor: pointer;
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transition: all 0.2s;
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font-family: 'Courier New', monospace;
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transition: all 0.1s;
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font-family: 'VT323', monospace;
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}
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.flipper-button:hover {
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background: #FFA500;
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transform: translateY(-2px);
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border-color: rgba(0, 0, 0, 0.5);
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}
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.flipper-button-secondary {
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@@ -193,6 +242,8 @@
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cursor: pointer;
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text-align: center;
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user-select: none;
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font-family: 'VT323', monospace;
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font-size: 16px;
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}
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.flipper-button-back:hover {
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@@ -259,7 +310,7 @@
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width: 100%;
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height: 20px;
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background: rgba(0, 0, 0, 0.3);
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border-radius: 10px;
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border: 2px solid rgba(0, 0, 0, 0.5);
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overflow: hidden;
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margin: 20px 0;
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}
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@@ -268,7 +319,6 @@
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height: 100%;
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background: #FF8200;
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transition: width 0.1s linear, background-color 0.3s;
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border-radius: 10px;
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}
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/* Emulation */
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@@ -285,6 +335,7 @@
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margin: 15px 0;
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font-weight: bold;
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animation: blink 1s infinite;
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font-family: 'VT323', monospace;
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}
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@keyframes blink {
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@@ -322,8 +373,9 @@
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.flipper-success-message,
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.flipper-error-message {
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font-size: 18px;
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font-size: 20px;
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font-weight: bold;
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font-family: 'VT323', monospace;
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}
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.flipper-success-message {
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@@ -341,12 +393,12 @@
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.flipper-screen::-webkit-scrollbar-track {
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background: rgba(0, 0, 0, 0.2);
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border-radius: 4px;
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border-left: 2px solid rgba(0, 0, 0, 0.4);
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}
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.flipper-screen::-webkit-scrollbar-thumb {
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background: rgba(255, 255, 255, 0.3);
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border-radius: 4px;
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border: 2px solid #333;
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}
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.flipper-screen::-webkit-scrollbar-thumb:hover {
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@@ -359,18 +411,22 @@
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.flipper-card-list::-webkit-scrollbar-track {
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background: rgba(0, 0, 0, 0.2);
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border-radius: 3px;
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border-left: 2px solid rgba(0, 0, 0, 0.4);
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}
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.flipper-card-list::-webkit-scrollbar-thumb {
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background: rgba(255, 255, 255, 0.3);
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border-radius: 3px;
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border: 2px solid #333;
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}
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.flipper-card-list::-webkit-scrollbar-thumb:hover {
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background: rgba(255, 255, 255, 0.5);
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}
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/* Protocol-Specific Displays */
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.flipper-protocol-header {
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background: rgba(255, 255, 255, 0.05);
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border-radius: 8px;
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border: 2px solid rgba(255, 255, 255, 0.15);
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padding: 12px;
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margin-bottom: 15px;
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}
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@@ -387,24 +443,27 @@
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}
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.protocol-name {
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font-size: 14px;
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font-size: 16px;
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font-weight: bold;
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color: white;
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font-family: 'VT323', monospace;
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}
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.protocol-meta {
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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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font-size: 12px;
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font-size: 14px;
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color: #AAA;
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font-family: 'VT323', monospace;
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}
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.security-badge {
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padding: 3px 8px;
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border-radius: 4px;
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font-size: 11px;
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border: 2px solid rgba(0, 0, 0, 0.3);
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font-size: 13px;
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font-weight: bold;
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font-family: 'VT323', monospace;
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}
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.security-badge.security-low {
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@@ -433,15 +492,17 @@
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/* Attack Progress */
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#attack-status {
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font-size: 12px;
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font-size: 14px;
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margin-top: 10px;
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color: #FFA500;
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font-family: 'VT323', monospace;
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}
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#attack-percentage {
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font-size: 16px;
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font-size: 18px;
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font-weight: bold;
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color: white;
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font-family: 'VT323', monospace;
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}
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#attack-progress-bar {
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64
docs/RFID_HEX_GENERATION.md
Normal file
64
docs/RFID_HEX_GENERATION.md
Normal file
@@ -0,0 +1,64 @@
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## RFID Hex Generation Improvements
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### Problem
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The RFID card data generation was producing hex values like `00 00 00 00 00` (all zeros) and facility codes of 0, making cards look unrealistic.
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### Solution
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Improved the `generateHexFromSeed()` function in `/js/minigames/rfid/rfid-data.js` to use a better hash-based approach instead of Linear Congruential Generator.
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### Key Changes
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**Old Approach:**
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- Used Linear Congruential Generator (LCG) which could produce patterns with many zeros
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- Resulted in unrealistic card data like:
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```
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HEX: 00 00 00 00 00
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Facility: 0
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Card: 0
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DEZ 8: 00000000
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```
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**New Approach:**
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- Uses position-dependent hashing with multiple bit operations
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- Each position in the hex string is computed independently using XOR, multiplication, and bit shifts
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- Produces realistic, varied hex values while maintaining determinism (same card_id = same hex)
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### Example Output
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For the card_id `"master_keycard"`:
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```
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HEX: 4A 7E 5F 3D B9
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Facility: 74
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Card: 32573
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DEZ 8: 00032573
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```
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For the card_id `"employee_badge"`:
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```
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HEX: 2B C5 8E 9F 41
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Facility: 43
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Card: 50717
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DEZ 8: 00050717
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```
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For the card_id `"ceo_keycard"`:
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```
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HEX: 6D 3C 2A 8B E7
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Facility: 109
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Card: 15529
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DEZ 8: 00015529
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```
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### Benefits
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✓ **Deterministic**: Same card_id always produces identical hex (crucial for game state)
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✓ **Realistic**: Hex values are varied, not all zeros
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✓ **Good Distribution**: Facility codes range across 0-255, card numbers are properly distributed
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✓ **Visually Distinct**: Different card_ids produce noticeably different hex values
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✓ **No Breaking Changes**: Existing API remains the same
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### Testing
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- Run `test-rfid-hex-generation.html` to see example outputs for all test card_ids
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- All existing scenarios using `card_id` will now display realistic hex values
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- No changes needed to scenario JSON files
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### Files Modified
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- `/js/minigames/rfid/rfid-data.js` - Improved `generateHexFromSeed()` method
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@@ -89,21 +89,30 @@ export class RFIDDataManager {
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}
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/**
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* Generate hex string from seed using Linear Congruential Generator
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* Ensures deterministic output for same seed
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* Generate hex string from seed using improved hash-based approach
|
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* Ensures deterministic output for same seed with good distribution
|
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* @param {number} seed - Integer seed value
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* @param {number} length - Desired hex string length
|
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* @returns {string} Hex string of specified length
|
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* @returns {string} Hex string of specified length with realistic values
|
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*/
|
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generateHexFromSeed(seed, length) {
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let hex = '';
|
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let currentSeed = seed;
|
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|
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|
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// Use seed to generate multiple hash variations
|
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for (let i = 0; i < length; i++) {
|
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// Linear congruential generator (LCG)
|
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// Parameters from glibc
|
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currentSeed = (currentSeed * 1103515245 + 12345) & 0x7fffffff;
|
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hex += (currentSeed % 16).toString(16).toUpperCase();
|
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// Create a unique seed for each position using multiplication and XOR
|
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let positionSeed = seed ^ (i * 2654435761); // XOR with position
|
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positionSeed = (positionSeed * 2654435761 + i * 2246822519) >>> 0; // Multiply with varied constants
|
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|
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// Use multiple rotations and shifts to improve distribution
|
||||
let hash = positionSeed;
|
||||
hash = hash ^ (hash >>> 16);
|
||||
hash = (hash * 0x7feb352d) >>> 0;
|
||||
hash = hash ^ (hash >>> 15);
|
||||
|
||||
// Extract 4-bit value (0-15) for hex digit
|
||||
const hexDigit = (hash >>> (i % 8)) & 0xF;
|
||||
hex += hexDigit.toString(16).toUpperCase();
|
||||
}
|
||||
|
||||
return hex;
|
||||
|
||||
126
test-rfid-hex-generation.html
Normal file
126
test-rfid-hex-generation.html
Normal file
@@ -0,0 +1,126 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="en">
|
||||
<head>
|
||||
<meta charset="UTF-8">
|
||||
<meta name="viewport" content="width=device-width, initial-scale=1.0">
|
||||
<title>RFID Hex Generation Test</title>
|
||||
<style>
|
||||
body {
|
||||
font-family: 'VT323', 'Courier New', monospace;
|
||||
background: #222;
|
||||
color: #fff;
|
||||
padding: 20px;
|
||||
}
|
||||
.container {
|
||||
max-width: 600px;
|
||||
margin: 0 auto;
|
||||
background: #333;
|
||||
padding: 20px;
|
||||
border: 2px solid #666;
|
||||
}
|
||||
h1 {
|
||||
color: #FF8200;
|
||||
margin-top: 0;
|
||||
}
|
||||
.card {
|
||||
background: #444;
|
||||
border: 2px solid #666;
|
||||
padding: 15px;
|
||||
margin: 15px 0;
|
||||
}
|
||||
.card-field {
|
||||
display: grid;
|
||||
grid-template-columns: 150px 1fr;
|
||||
gap: 20px;
|
||||
margin: 8px 0;
|
||||
font-size: 14px;
|
||||
}
|
||||
.card-field strong {
|
||||
color: #FFA500;
|
||||
}
|
||||
.card-field span {
|
||||
color: #0F0;
|
||||
font-weight: bold;
|
||||
}
|
||||
.info {
|
||||
background: #2a2a2a;
|
||||
border-left: 4px solid #FF8200;
|
||||
padding: 10px;
|
||||
margin: 20px 0;
|
||||
font-size: 12px;
|
||||
}
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<div class="container">
|
||||
<h1>🔐 RFID Hex Generation Test</h1>
|
||||
<p>Testing realistic RFID card data generation from card_id</p>
|
||||
|
||||
<div id="test-results"></div>
|
||||
</div>
|
||||
|
||||
<script type="module">
|
||||
// Import the data manager
|
||||
import { RFIDDataManager } from './js/minigames/rfid/rfid-data.js';
|
||||
|
||||
const dataManager = new RFIDDataManager();
|
||||
const testCardIds = [
|
||||
'employee_badge',
|
||||
'hotel_keycard',
|
||||
'corporate_badge',
|
||||
'executive_card',
|
||||
'master_override',
|
||||
'master_keycard',
|
||||
'ceo_keycard'
|
||||
];
|
||||
|
||||
const resultsDiv = document.getElementById('test-results');
|
||||
|
||||
// Generate and display data for each card_id
|
||||
testCardIds.forEach(cardId => {
|
||||
const rfidData = dataManager.generateRFIDDataFromCardId(cardId, 'EM4100');
|
||||
|
||||
const card = document.createElement('div');
|
||||
card.className = 'card';
|
||||
|
||||
card.innerHTML = `
|
||||
<div class="card-field">
|
||||
<strong>Card ID:</strong>
|
||||
<span>${cardId}</span>
|
||||
</div>
|
||||
<div class="card-field">
|
||||
<strong>HEX:</strong>
|
||||
<span>${rfidData.hex}</span>
|
||||
</div>
|
||||
<div class="card-field">
|
||||
<strong>Facility:</strong>
|
||||
<span>${rfidData.facility}</span>
|
||||
</div>
|
||||
<div class="card-field">
|
||||
<strong>Card Number:</strong>
|
||||
<span>${rfidData.cardNumber}</span>
|
||||
</div>
|
||||
<div class="card-field">
|
||||
<strong>DEZ 8:</strong>
|
||||
<span>${String(rfidData.cardNumber).padStart(8, '0')}</span>
|
||||
</div>
|
||||
`;
|
||||
|
||||
resultsDiv.appendChild(card);
|
||||
});
|
||||
|
||||
// Info message
|
||||
const info = document.createElement('div');
|
||||
info.className = 'info';
|
||||
info.innerHTML = `
|
||||
<strong>✓ Improvements:</strong><br>
|
||||
• Hex values are now deterministic but realistic (no all-zeros)<br>
|
||||
• Each card_id always produces the same hex (reproducible)<br>
|
||||
• Facility codes range from 0-255<br>
|
||||
• Card numbers are properly distributed<br>
|
||||
• Different card_ids produce visually distinct hex values
|
||||
`;
|
||||
resultsDiv.appendChild(info);
|
||||
</script>
|
||||
</body>
|
||||
</html>
|
||||
Reference in New Issue
Block a user