fieldwitness/frontends/web/templates/stego/decode.html
Aaron D. Lee 490f9d4a1d Rebrand SooSeF to FieldWitness
Complete project rebrand for better positioning in the press freedom
and digital security space. FieldWitness communicates both field
deployment and evidence testimony — appropriate for the target audience
of journalists, NGOs, and human rights organizations.

Rename mapping:
- soosef → fieldwitness (package, CLI, all imports)
- soosef.stegasoo → fieldwitness.stego
- soosef.verisoo → fieldwitness.attest
- ~/.soosef/ → ~/.fwmetadata/ (innocuous data dir name)
- SOOSEF_DATA_DIR → FIELDWITNESS_DATA_DIR
- SoosefConfig → FieldWitnessConfig
- SoosefError → FieldWitnessError

Also includes:
- License switch from MIT to GPL-3.0
- C2PA bridge module (Phase 0-2 MVP): cert.py, export.py, vendor_assertions.py
- README repositioned to lead with provenance/federation, stego backgrounded
- Threat model skeleton at docs/security/threat-model.md
- Planning docs: docs/planning/c2pa-integration.md, docs/planning/gtm-feasibility.md

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-02 15:05:13 -04:00

683 lines
39 KiB
HTML

{% extends "base.html" %}
{% block title %}Decode Message - Stego{% endblock %}
{% block content %}
<style>
/* Accordion styling */
.step-accordion .accordion-button {
background: rgba(35, 45, 55, 0.8);
color: #fff;
padding: 0.75rem 1rem;
border-left: 3px solid rgba(255, 230, 153, 0.3);
border-bottom: 1px solid rgba(255, 255, 255, 0.08);
transition: all 0.3s ease;
}
.step-accordion .accordion-button:hover {
background: rgba(45, 55, 65, 0.9);
border-left-color: rgba(255, 230, 153, 0.5);
}
.step-accordion .accordion-button:not(.collapsed) {
background: linear-gradient(90deg, rgba(255, 230, 153, 0.12) 0%, rgba(40, 50, 60, 0.85) 40%, rgba(40, 50, 60, 0.85) 100%);
color: #fff;
box-shadow: inset 0 1px 0 rgba(255, 230, 153, 0.1);
border-left: 3px solid #ffe699;
}
.step-accordion .accordion-button::after {
filter: brightness(0) invert(1);
opacity: 0.5;
}
.step-accordion .accordion-button:not(.collapsed)::after {
opacity: 0.9;
}
.step-accordion .accordion-body {
background: rgba(30, 40, 50, 0.4);
padding: 1rem;
}
.step-accordion .accordion-item {
border-color: rgba(255,255,255,0.1);
background: transparent;
}
.step-accordion .accordion-item:first-child .accordion-button {
border-radius: 0;
}
.step-accordion .accordion-item:last-child .accordion-button.collapsed {
border-radius: 0;
}
.step-summary {
font-size: 0.8rem;
color: rgba(255,255,255,0.5);
margin-left: auto;
padding-right: 1rem;
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
max-width: 50%;
}
.step-summary.has-content {
color: rgba(99, 179, 237, 0.8);
}
.step-title {
display: flex;
align-items: center;
gap: 0.5rem;
}
.step-number {
background: rgba(246, 173, 85, 0.2);
color: #f6ad55;
width: 1.5rem;
height: 1.5rem;
border-radius: 50%;
display: flex;
align-items: center;
justify-content: center;
font-size: 0.75rem;
font-weight: bold;
border: 1px solid rgba(246, 173, 85, 0.3);
}
.step-number.complete {
background: rgba(72, 187, 120, 0.2);
color: #48bb78;
border-color: rgba(72, 187, 120, 0.3);
}
/* Glowing passphrase input */
.passphrase-input {
background: rgba(30, 40, 50, 0.8) !important;
border: 2px solid rgba(99, 179, 237, 0.3) !important;
color: #63b3ed !important;
font-family: 'Courier New', monospace;
font-size: 1.1rem;
letter-spacing: 0.5px;
padding: 12px 16px;
transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.passphrase-input:focus {
border-color: rgba(99, 179, 237, 0.8) !important;
box-shadow: 0 0 20px rgba(99, 179, 237, 0.4) !important;
}
.passphrase-input::placeholder {
color: rgba(99, 179, 237, 0.4);
}
/* PIN input */
.pin-input-container .form-control {
background: rgba(30, 40, 50, 0.8) !important;
border: 2px solid rgba(246, 173, 85, 0.3) !important;
color: #f6ad55 !important;
font-family: 'Courier New', monospace;
font-size: 1.2rem;
letter-spacing: 3px;
text-align: center;
}
.pin-input-container .form-control:focus {
border-color: rgba(246, 173, 85, 0.8) !important;
box-shadow: 0 0 20px rgba(246, 173, 85, 0.4) !important;
}
/* QR Crop Animation - uses .qr-scan-container from style.css */
</style>
<div class="row justify-content-center">
<div class="col-lg-8">
<div class="card">
<div class="card-header">
<h5 class="mb-0"><i class="bi bi-unlock-fill me-2"></i>Decode Secret Message or File</h5>
</div>
<div class="card-body {% if not decoded_message and not decoded_file %}p-0{% endif %}">
{% if decoded_message %}
<!-- Text Message Result -->
<div class="alert alert-success">
<h6><i class="bi bi-check-circle me-2"></i>Message Decrypted Successfully!</h6>
</div>
<label class="form-label text-muted">Decoded Message: <small class="text-secondary">(click to copy)</small></label>
<div class="alert-message p-3 rounded bg-dark border border-secondary mb-3" id="decodedContent" style="white-space: pre-wrap; cursor: pointer; transition: border-color 0.2s;"
onclick="navigator.clipboard.writeText(this.innerText).then(() => { this.style.borderColor = '#198754'; this.dataset.origText = this.innerHTML; this.innerHTML = '<i class=\'bi bi-check-circle text-success\'></i> Copied to clipboard!'; setTimeout(() => { this.innerHTML = this.dataset.origText; this.style.borderColor = ''; }, 1500); }).catch(() => alert('Failed to copy'))"
onmouseover="this.style.borderColor = '#6c757d'"
onmouseout="this.style.borderColor = ''">{{ decoded_message }}</div>
<a href="/decode" class="btn btn-outline-light w-100">
<i class="bi bi-arrow-repeat me-2"></i>Decode Another
</a>
{% elif decoded_file %}
<!-- File Result -->
<div class="alert alert-success">
<h6><i class="bi bi-check-circle me-2"></i>File Decrypted Successfully!</h6>
</div>
<div class="text-center mb-4">
<i class="bi bi-file-earmark-check text-success" style="font-size: 4rem;"></i>
<h5 class="mt-3">{{ filename }}</h5>
<p class="text-muted mb-1">{{ file_size }}</p>
{% if mime_type %}
<small class="text-muted">Type: {{ mime_type }}</small>
{% endif %}
</div>
<a href="{{ url_for('decode_download', file_id=file_id) }}" class="btn btn-primary btn-lg w-100 mb-3">
<i class="bi bi-download me-2"></i>Download File
</a>
<div class="alert alert-warning small">
<i class="bi bi-clock me-1"></i>
<strong>File expires in 10 minutes.</strong> Download now.
</div>
<a href="/decode" class="btn btn-outline-light w-100">
<i class="bi bi-arrow-repeat me-2"></i>Decode Another
</a>
{% else %}
<!-- Decode Form -->
<form method="POST" enctype="multipart/form-data" id="decodeForm">
<input type="hidden" name="csrf_token" value="{{ csrf_token() }}"/>
<div class="accordion step-accordion" id="decodeAccordion">
<!-- ================================================================
STEP 1: CARRIER TYPE (v4.3.0)
================================================================ -->
<div class="accordion-item" id="carrierTypeStep">
<h2 class="accordion-header">
<button class="accordion-button" type="button" data-bs-toggle="collapse" data-bs-target="#stepCarrierType">
<span class="step-title">
<span class="step-number" id="stepCarrierTypeNumber">1</span>
<i class="bi bi-collection me-1"></i> Carrier Type
</span>
<span class="step-summary" id="stepCarrierTypeSummary"></span>
</button>
</h2>
<div id="stepCarrierType" class="accordion-collapse collapse show" data-bs-parent="#decodeAccordion">
<div class="accordion-body">
<input type="hidden" name="carrier_type" id="carrierTypeInput" value="image">
<div class="btn-group w-100" role="group">
<input type="radio" class="btn-check" name="carrier_type_select" id="typeImage" value="image" checked>
<label class="btn btn-outline-secondary" for="typeImage">
<i class="bi bi-image me-1"></i> Image
</label>
<input type="radio" class="btn-check" name="carrier_type_select" id="typeAudio" value="audio"
{% if not has_audio %}disabled{% endif %}>
<label class="btn btn-outline-secondary {% if not has_audio %}disabled text-muted{% endif %}" for="typeAudio">
<i class="bi bi-music-note-beamed me-1"></i> Audio
{% if not has_audio %}<small class="d-block" style="font-size: 0.65rem;">(not available)</small>{% endif %}
</label>
</div>
</div>
</div>
</div>
<!-- ================================================================
STEP 2: IMAGES & MODE
================================================================ -->
<div class="accordion-item">
<h2 class="accordion-header">
<button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#stepImages">
<span class="step-title">
<span class="step-number" id="stepImagesNumber">2</span>
<i class="bi bi-images me-1"></i> Reference, Carrier, Mode
</span>
<span class="step-summary" id="stepImagesSummary">Select reference & stego</span>
</button>
</h2>
<div id="stepImages" class="accordion-collapse collapse" data-bs-parent="#decodeAccordion">
<div class="accordion-body">
<div class="row">
<div class="col-md-6 mb-3">
<label class="form-label">
<i class="bi bi-image me-1"></i> Reference Photo
</label>
<div class="drop-zone scan-container" id="refDropZone">
<input type="file" name="reference_photo" accept="image/*" required id="refPhotoInput">
<div class="drop-zone-label">
<i class="bi bi-cloud-arrow-up fs-3 d-block mb-2 text-muted"></i>
<span class="text-muted">Drop image or click</span>
</div>
<img class="drop-zone-preview d-none" id="refPreview">
<div class="scan-overlay"><div class="scan-grid"></div><div class="scan-line"></div></div>
<div class="scan-corners">
<div class="scan-corner tl"></div><div class="scan-corner tr"></div>
<div class="scan-corner bl"></div><div class="scan-corner br"></div>
</div>
<div class="scan-data-panel">
<div class="scan-data-filename"><i class="bi bi-check-circle-fill"></i><span id="refFileName">image.jpg</span></div>
<div class="scan-data-row"><span class="scan-status-badge">Hash Acquired</span><span class="scan-data-value" id="refFileSize">--</span></div>
</div>
</div>
<div class="form-text">Same reference photo used for encoding</div>
</div>
<div class="col-md-6 mb-3">
<div id="imageStegoSection">
<label class="form-label">
<i class="bi bi-file-earmark-image me-1"></i> Stego Image
</label>
<div class="drop-zone pixel-container" id="stegoDropZone">
<input type="file" name="stego_image" accept="image/*" required id="stegoInput">
<div class="drop-zone-label">
<i class="bi bi-cloud-arrow-up fs-3 d-block mb-2 text-muted"></i>
<span class="text-muted">Drop image or click</span>
</div>
<img class="drop-zone-preview d-none" id="stegoPreview">
<div class="pixel-blocks"></div>
<div class="pixel-scan-line"></div>
<div class="pixel-corners">
<div class="pixel-corner tl"></div><div class="pixel-corner tr"></div>
<div class="pixel-corner bl"></div><div class="pixel-corner br"></div>
</div>
<div class="pixel-data-panel">
<div class="pixel-data-filename"><i class="bi bi-check-circle-fill"></i><span id="stegoFileName">image.png</span></div>
<div class="pixel-data-row"><span class="pixel-status-badge">Stego Loaded</span><span class="pixel-data-value" id="stegoFileSize">--</span></div>
<div class="pixel-dimensions" id="stegoDims">-- x -- px</div>
</div>
</div>
<div class="form-text">Image containing the hidden message</div>
</div>
<!-- Audio Stego (hidden by default) -->
<div class="d-none" id="audioStegoSection">
<label class="form-label">
<i class="bi bi-file-earmark-music me-1"></i> Stego Audio
</label>
<div class="drop-zone pixel-container" id="audioStegoDropZone">
<input type="file" name="stego_image" accept="audio/*" id="audioStegoInput">
<div class="drop-zone-label">
<i class="bi bi-music-note-beamed fs-3 d-block mb-2 text-muted"></i>
<span class="text-muted">Drop audio or click</span>
</div>
<div class="pixel-data-panel">
<div class="pixel-data-filename"><i class="bi bi-check-circle-fill"></i><span id="audioStegoFileName">audio.wav</span></div>
<div class="pixel-data-row"><span class="pixel-status-badge">Audio Loaded</span><span class="pixel-data-value" id="audioStegoFileSize">--</span></div>
</div>
</div>
<div class="form-text">Audio file containing the hidden message</div>
</div>
</div>
</div>
<!-- Extraction Mode -->
<div class="d-flex gap-2 align-items-center flex-wrap mb-2">
<div id="imageModeGroup">
<div class="btn-group" role="group">
<input type="radio" class="btn-check" name="embed_mode" id="modeAuto" value="auto" checked>
<label class="btn btn-outline-secondary text-nowrap" for="modeAuto"><i class="bi bi-magic me-1"></i>Auto</label>
<input type="radio" class="btn-check" name="embed_mode" id="modeLsb" value="lsb">
<label class="btn btn-outline-secondary text-nowrap" for="modeLsb"><i class="bi bi-grid-3x3-gap me-1"></i>LSB</label>
<input type="radio" class="btn-check" name="embed_mode" id="modeDct" value="dct" {% if not has_dct %}disabled{% endif %}>
<label class="btn btn-outline-secondary text-nowrap" for="modeDct" id="dctModeLabel"><i class="bi bi-soundwave me-1"></i>DCT</label>
</div>
</div>
<!-- Audio Extraction Modes (hidden by default) -->
<div class="d-none" id="audioModeGroup">
<div class="btn-group" role="group">
<input type="radio" class="btn-check" name="embed_mode" id="modeAudioAuto" value="audio_auto">
<label class="btn btn-outline-secondary text-nowrap" for="modeAudioAuto"><i class="bi bi-magic me-1"></i>Auto</label>
<input type="radio" class="btn-check" name="embed_mode" id="modeAudioLsb" value="audio_lsb">
<label class="btn btn-outline-secondary text-nowrap" for="modeAudioLsb"><i class="bi bi-grid-3x3-gap me-1"></i>LSB</label>
<input type="radio" class="btn-check" name="embed_mode" id="modeAudioSpread" value="audio_spread">
<label class="btn btn-outline-secondary text-nowrap" for="modeAudioSpread"><i class="bi bi-broadcast me-1"></i>Spread</label>
</div>
</div>
</div>
<div class="form-text" id="modeHint">
<i class="bi bi-lightning me-1"></i>Tries LSB first, then DCT
</div>
</div>
</div>
</div>
<!-- ================================================================
STEP 3: SECURITY
================================================================ -->
<div class="accordion-item">
<h2 class="accordion-header">
<button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#stepSecurity">
<span class="step-title">
<span class="step-number" id="stepSecurityNumber">3</span>
<i class="bi bi-shield-lock me-1"></i> Security
</span>
<span class="step-summary" id="stepSecuritySummary">Passphrase & keys</span>
</button>
</h2>
<div id="stepSecurity" class="accordion-collapse collapse" data-bs-parent="#decodeAccordion">
<div class="accordion-body">
<!-- Passphrase -->
<div class="mb-3">
<label class="form-label"><i class="bi bi-chat-quote me-1"></i> Passphrase</label>
<input type="text" name="passphrase" class="form-control passphrase-input"
placeholder="e.g., apple forest thunder mountain" required id="passphraseInput">
<div class="form-text">The passphrase used during encoding</div>
</div>
<hr class="my-3 opacity-25">
<div class="small text-muted mb-2">Provide same factors used during encoding</div>
<div class="row">
<!-- PIN -->
<div class="col-md-6 mb-2">
<div class="security-box h-100">
<label class="form-label"><i class="bi bi-123 me-1"></i> PIN</label>
<div class="input-group pin-input-container">
<input type="password" name="pin" class="form-control" id="pinInput" placeholder="••••••" maxlength="9">
<button class="btn btn-outline-secondary" type="button" data-toggle-password="pinInput">
<i class="bi bi-eye"></i>
</button>
</div>
</div>
</div>
<!-- Channel -->
<div class="col-md-6 mb-2">
<div class="security-box h-100">
<label class="form-label"><i class="bi bi-broadcast me-1"></i> Channel</label>
<select class="form-select form-select-sm" name="channel_key" id="channelSelectDec">
<option value="auto" selected>Auto{% if channel_configured %} (Server){% endif %}</option>
<option value="none">Public</option>
{% if saved_channel_keys %}
<optgroup label="Saved Keys">
{% for key in saved_channel_keys %}
<option value="{{ key.channel_key }}">{{ key.name }}</option>
{% endfor %}
</optgroup>
{% endif %}
<option value="custom">Custom...</option>
</select>
</div>
</div>
</div>
<!-- Custom Channel Key -->
<div class="mb-3 d-none" id="channelCustomInputDec">
<div class="security-box">
<label class="form-label"><i class="bi bi-key me-1"></i> Custom Channel Key</label>
<div class="input-group">
<input type="text" name="channel_key_custom" class="form-control form-control-sm font-monospace"
placeholder="XXXX-XXXX-XXXX-XXXX-XXXX-XXXX-XXXX-XXXX" id="channelKeyInputDec">
<button class="btn btn-outline-secondary btn-sm" type="button" id="channelKeyScanDec" title="Scan QR"><i class="bi bi-camera"></i></button>
</div>
</div>
</div>
<!-- RSA Key -->
<div class="mb-3">
<div class="security-box">
<label class="form-label"><i class="bi bi-file-earmark-lock me-1"></i> RSA Key <span class="text-muted">(if used)</span></label>
<div class="btn-group w-100 mb-2" role="group">
<input type="radio" class="btn-check" name="rsa_input_method" id="rsaMethodFile" value="file" checked>
<label class="btn btn-outline-secondary btn-sm" for="rsaMethodFile"><i class="bi bi-file-earmark me-1"></i>.pem</label>
<input type="radio" class="btn-check" name="rsa_input_method" id="rsaMethodQr" value="qr">
<label class="btn btn-outline-secondary btn-sm" for="rsaMethodQr"><i class="bi bi-qr-code me-1"></i>QR</label>
</div>
<div id="rsaFileSection">
<input type="file" name="rsa_key" class="form-control form-control-sm" accept=".pem">
</div>
<div id="rsaQrSection" class="d-none d-flex flex-column">
<input type="hidden" name="rsa_key_pem" id="rsaKeyPem">
<div class="drop-zone p-2 w-100" id="qrDropZone">
<input type="file" name="rsa_key_qr" accept="image/*" id="rsaQrInput">
<div class="drop-zone-label text-center">
<i class="bi bi-qr-code-scan fs-5 d-block text-muted mb-1"></i>
<span class="text-muted small">Drop QR image</span>
</div>
<div class="qr-scan-container d-none" id="qrCropContainer">
<img class="qr-original" id="qrOriginal" alt="Original">
<img class="qr-cropped" id="qrCropped" alt="Cropped">
</div>
</div>
<button type="button" class="btn btn-outline-secondary btn-sm w-100 mt-2" id="rsaQrWebcam">
<i class="bi bi-camera me-1"></i>Scan with Camera
</button>
</div>
<div class="input-group input-group-sm mt-2">
<input type="password" name="rsa_password" class="form-control" id="rsaPasswordInput" placeholder="Key password (if encrypted)">
<button class="btn btn-outline-secondary" type="button" data-toggle-password="rsaPasswordInput"><i class="bi bi-eye"></i></button>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<!-- Submit Button -->
<div class="p-3">
<button type="submit" class="btn btn-primary btn-lg w-100" id="decodeBtn">
<i class="bi bi-unlock me-2"></i>Decode
</button>
</div>
</form>
{% endif %}
</div>
</div>
{% if not decoded_message and not decoded_file %}
<!-- Troubleshooting Card -->
<div class="card mt-4">
<div class="card-body">
<h6 class="text-muted mb-3"><i class="bi bi-question-circle me-2"></i>Troubleshooting</h6>
<ul class="list-unstyled text-muted small mb-0">
<li class="mb-2">
<i class="bi bi-check-circle-fill text-success me-1"></i>
Use the <strong>exact same reference photo</strong> (byte-for-byte identical)
</li>
<li class="mb-2">
<i class="bi bi-check-circle-fill text-success me-1"></i>
Enter the <strong>exact passphrase</strong> used during encoding
</li>
<li class="mb-2">
<i class="bi bi-exclamation-triangle-fill text-warning me-1"></i>
Ensure the stego image hasn't been <strong>resized or recompressed</strong>
</li>
<li class="mb-0">
<i class="bi bi-info-circle-fill text-info me-1"></i>
If auto-detection fails, try specifying <strong>LSB or DCT mode</strong>
</li>
</ul>
</div>
</div>
{% endif %}
</div>
</div>
{% endblock %}
{% block scripts %}
<script src="{{ url_for('static', filename='js/fieldwitness.js') }}"></script>
<script>
// ============================================================================
// MODE HINT - Dynamic text based on selected extraction mode
// ============================================================================
const modeHints = {
auto: { icon: 'lightning', text: 'Tries LSB first, then DCT' },
lsb: { icon: 'hdd', text: 'For email and direct transfers' },
dct: { icon: 'phone', text: 'For social media images' },
audio_auto: { icon: 'lightning', text: 'Tries LSB first, then Spread Spectrum' },
audio_lsb: { icon: 'grid-3x3-gap', text: 'Direct bit embedding in audio samples' },
audio_spread: { icon: 'broadcast', text: 'Noise-resistant spread spectrum encoding' }
};
document.querySelectorAll('input[name="embed_mode"]').forEach(radio => {
radio.addEventListener('change', function() {
const hint = document.getElementById('modeHint');
const data = modeHints[this.value];
if (hint && data) {
hint.innerHTML = `<i class="bi bi-${data.icon} me-1"></i>${data.text}`;
}
});
});
// ============================================================================
// ACCORDION SUMMARY UPDATES
// ============================================================================
const carrierTypeInput = document.getElementById('carrierTypeInput');
function updateImagesSummary() {
const ref = document.getElementById('refPhotoInput')?.files[0];
const isAudio = carrierTypeInput?.value === 'audio';
const stego = isAudio
? document.getElementById('audioStegoInput')?.files[0]
: document.getElementById('stegoInput')?.files[0];
const mode = document.querySelector('input[name="embed_mode"]:checked')?.value?.toUpperCase() || 'AUTO';
const summary = document.getElementById('stepImagesSummary');
const stepNum = document.getElementById('stepImagesNumber');
if (ref && stego) {
const refName = ref.name.length > 12 ? ref.name.slice(0, 10) + '..' : ref.name;
const stegoName = stego.name.length > 12 ? stego.name.slice(0, 10) + '..' : stego.name;
summary.textContent = `${refName} + ${stegoName}, ${mode}`;
summary.classList.add('has-content');
stepNum.classList.add('complete');
stepNum.innerHTML = '<i class="bi bi-check"></i>';
} else if (ref || stego) {
summary.textContent = ref ? ref.name.slice(0, 15) : stego.name.slice(0, 15);
summary.classList.remove('has-content');
stepNum.classList.remove('complete');
stepNum.textContent = '2';
} else {
summary.textContent = isAudio ? 'Select reference & audio' : 'Select reference & stego';
summary.classList.remove('has-content');
stepNum.classList.remove('complete');
stepNum.textContent = '2';
}
}
function updateSecuritySummary() {
const passphrase = document.getElementById('passphraseInput')?.value || '';
const pin = document.getElementById('pinInput')?.value || '';
const rsaFile = document.querySelector('input[name="rsa_key"]')?.files[0];
const rsaPem = document.getElementById('rsaKeyPem')?.value || '';
const summary = document.getElementById('stepSecuritySummary');
const stepNum = document.getElementById('stepSecurityNumber');
const parts = [];
if (passphrase.trim()) parts.push('passphrase');
if (pin) parts.push('PIN');
if (rsaFile || rsaPem) parts.push('RSA');
if (parts.length > 0) {
summary.textContent = parts.join(' + ');
summary.classList.add('has-content');
if (passphrase.trim()) {
stepNum.classList.add('complete');
stepNum.innerHTML = '<i class="bi bi-check"></i>';
}
} else {
summary.textContent = 'Passphrase & keys';
summary.classList.remove('has-content');
stepNum.classList.remove('complete');
stepNum.textContent = '3';
}
}
// Attach listeners
document.getElementById('refPhotoInput')?.addEventListener('change', updateImagesSummary);
document.getElementById('stegoInput')?.addEventListener('change', updateImagesSummary);
document.getElementById('audioStegoInput')?.addEventListener('change', updateImagesSummary);
document.querySelectorAll('input[name="embed_mode"]').forEach(r => r.addEventListener('change', updateImagesSummary));
document.querySelectorAll('#audioModeGroup input[name="embed_mode"]').forEach(r => r.addEventListener('change', updateImagesSummary));
document.getElementById('passphraseInput')?.addEventListener('input', updateSecuritySummary);
document.getElementById('pinInput')?.addEventListener('input', updateSecuritySummary);
document.querySelector('input[name="rsa_key"]')?.addEventListener('change', updateSecuritySummary);
// ============================================================================
// CARRIER TYPE TOGGLE (v4.3.0)
// ============================================================================
const carrierTypeRadios = document.querySelectorAll('input[name="carrier_type_select"]');
const imageStegoSection = document.getElementById('imageStegoSection');
const audioStegoSection = document.getElementById('audioStegoSection');
const imageModeGroup = document.getElementById('imageModeGroup');
const audioModeGroup = document.getElementById('audioModeGroup');
const stepCarrierTypeSummary = document.getElementById('stepCarrierTypeSummary');
carrierTypeRadios.forEach(radio => {
radio.addEventListener('change', function() {
const isAudio = this.value === 'audio';
carrierTypeInput.value = this.value;
// Toggle stego sections
if (imageStegoSection) imageStegoSection.classList.toggle('d-none', isAudio);
if (audioStegoSection) audioStegoSection.classList.toggle('d-none', !isAudio);
// Toggle required attribute so hidden inputs don't block form submission
const imgStego = document.getElementById('stegoInput');
const audStego = document.getElementById('audioStegoInput');
if (imgStego) { if (isAudio) imgStego.removeAttribute('required'); else imgStego.setAttribute('required', ''); }
if (audStego) { if (isAudio) audStego.setAttribute('required', ''); else audStego.removeAttribute('required'); }
// Toggle mode groups
if (imageModeGroup) imageModeGroup.classList.toggle('d-none', isAudio);
if (audioModeGroup) audioModeGroup.classList.toggle('d-none', !isAudio);
// Update summary
if (stepCarrierTypeSummary) {
stepCarrierTypeSummary.textContent = isAudio ? 'Audio' : 'Image';
}
// Select default mode
if (isAudio) {
const audioAuto = document.getElementById('modeAudioAuto');
if (audioAuto) audioAuto.checked = true;
} else {
const autoMode = document.getElementById('modeAuto');
if (autoMode) autoMode.checked = true;
}
// Clear stego file selections
const stegoInput = document.getElementById('stegoInput');
const audioStegoInput = document.getElementById('audioStegoInput');
if (stegoInput) stegoInput.value = '';
if (audioStegoInput) audioStegoInput.value = '';
// Reset previews
document.getElementById('stegoPreview')?.classList.add('d-none');
// Update mode hint
const hint = document.getElementById('modeHint');
if (hint) {
if (isAudio) {
hint.innerHTML = '<i class="bi bi-lightning me-1"></i>Tries LSB first, then Spread Spectrum';
} else {
hint.innerHTML = '<i class="bi bi-lightning me-1"></i>Tries LSB first, then DCT';
}
}
updateImagesSummary();
});
});
// Audio stego file info display
const audioStegoInput = document.getElementById('audioStegoInput');
audioStegoInput?.addEventListener('change', function() {
if (this.files && this.files[0]) {
const file = this.files[0];
document.getElementById('audioStegoFileName').textContent = file.name;
document.getElementById('audioStegoFileSize').textContent = (file.size / 1024).toFixed(1) + ' KB';
updateImagesSummary();
}
});
// ============================================================================
// MODE SWITCHING
// ============================================================================
// Apply disabled styling to DCT if not available
if (document.getElementById('modeDct')?.disabled) {
document.getElementById('dctModeLabel')?.classList.add('disabled', 'text-muted');
}
// ============================================================================
// LOADING STATE
// ============================================================================
Stego.initFormLoading('decodeForm', 'decodeBtn', 'Decoding...');
</script>
{% endblock %}