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Added password-protect PEM support.

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This commit is contained in:
Aaron D. Lee
2025-12-27 20:22:25 -05:00
parent 2abb458c57
commit ee937c832f
5 changed files with 687 additions and 225 deletions
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119
templates/decode.html
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@@ -49,7 +49,7 @@
<label class="form-label">
<i class="bi bi-file-earmark-image me-1"></i> Stego Image
</label>
<div class="drop-zone">
<div class="drop-zone" id="stegoDropZone">
<input type="file" name="stego_image" accept="image/*" required>
<div class="drop-zone-label">
<i class="bi bi-cloud-arrow-up fs-3 d-block mb-2 text-muted"></i>
@@ -63,28 +63,58 @@
</div>
</div>
<div class="row">
<div class="col-md-8 mb-3">
<label class="form-label">
<i class="bi bi-chat-quote me-1"></i> Day Phrase
</label>
<input type="text" name="day_phrase" class="form-control"
placeholder="e.g., correct horse battery" required>
<div class="form-text">
The phrase for the day the message was encoded
</div>
<div class="mb-3">
<label class="form-label" id="dayPhraseLabel">
<i class="bi bi-chat-quote me-1"></i> Day Phrase
</label>
<input type="text" name="day_phrase" class="form-control"
placeholder="e.g., correct horse battery" required>
<div class="form-text">
The phrase for the day the message was encoded
</div>
<div class="col-md-4 mb-3">
</div>
<hr class="my-4">
<h6 class="text-muted mb-3">
SECURITY FACTORS
<span class="text-warning small">(provide same factors used during encoding)</span>
</h6>
<div class="row">
<div class="col-md-6 mb-3">
<label class="form-label">
<i class="bi bi-123 me-1"></i> PIN
</label>
<input type="password" name="pin" class="form-control"
placeholder="123456" maxlength="10">
<input type="password" name="pin" class="form-control" id="pinInput"
placeholder="6-9 digits" maxlength="9">
<div class="form-text">
Your static 6-digit PIN
If PIN was used during encoding
</div>
</div>
<div class="col-md-6 mb-3">
<label class="form-label">
<i class="bi bi-file-earmark-lock me-1"></i> RSA Key
</label>
<input type="file" name="rsa_key" class="form-control" id="rsaKeyInput"
accept=".pem,.key">
<div class="form-text">
If RSA key was used during encoding
</div>
</div>
</div>
<!-- RSA Key Password (shown when key selected) -->
<div class="mb-3 d-none" id="rsaPasswordGroup">
<label class="form-label">
<i class="bi bi-key me-1"></i> RSA Key Password
</label>
<input type="password" name="rsa_password" class="form-control"
placeholder="Password for the .pem file (if encrypted)">
<div class="form-text">
Leave blank if your key file is not password-protected
</div>
</div>
<button type="submit" class="btn btn-primary btn-lg w-100" id="decodeBtn">
@@ -108,13 +138,17 @@
<i class="bi bi-dot"></i>
Use the phrase for the <strong>day the message was encoded</strong>, not today
</li>
<li class="mb-2">
<i class="bi bi-dot"></i>
Provide the <strong>same security factors</strong> (PIN and/or RSA key) used during encoding
</li>
<li class="mb-2">
<i class="bi bi-dot"></i>
Ensure the stego image hasn't been <strong>resized or recompressed</strong>
</li>
<li class="mb-0">
<i class="bi bi-dot"></i>
Double-check your <strong>PIN</strong> is correct
If using an RSA key, make sure the <strong>password is correct</strong>
</li>
</ul>
</div>
@@ -132,13 +166,44 @@ document.getElementById('decodeForm')?.addEventListener('submit', function() {
btn.disabled = true;
});
// Show RSA password field when key is selected
const rsaKeyInput = document.getElementById('rsaKeyInput');
const rsaPasswordGroup = document.getElementById('rsaPasswordGroup');
rsaKeyInput?.addEventListener('change', function() {
rsaPasswordGroup.classList.toggle('d-none', !this.files.length);
});
// Day names for date detection
const dayNames = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'];
// Detect day from filename
function detectDayFromFilename(filename) {
const dateMatch = filename.match(/_(\d{4})[-]?(\d{2})[-]?(\d{2})/);
if (dateMatch) {
const [, year, month, day] = dateMatch;
const date = new Date(year, month - 1, day);
return dayNames[date.getDay()];
}
return null;
}
// Update day phrase label
function updateDayLabel(dayName) {
const label = document.getElementById('dayPhraseLabel');
if (label && dayName) {
label.innerHTML = `<i class="bi bi-chat-quote me-1"></i> ${dayName}'s Phrase`;
}
}
// Drag & drop with preview
document.querySelectorAll('.drop-zone').forEach(zone => {
const input = zone.querySelector('input[type="file"]');
const label = zone.querySelector('.drop-zone-label');
const preview = zone.querySelector('.drop-zone-preview');
const isStegoZone = zone.id === 'stegoDropZone';
// Drag events
['dragenter', 'dragover'].forEach(evt => {
zone.addEventListener(evt, e => {
e.preventDefault();
@@ -153,18 +218,28 @@ document.querySelectorAll('.drop-zone').forEach(zone => {
});
});
// Handle drop
zone.addEventListener('drop', e => {
if (e.dataTransfer.files.length) {
input.files = e.dataTransfer.files;
showPreview(e.dataTransfer.files[0]);
const file = e.dataTransfer.files[0];
showPreview(file);
if (isStegoZone) {
const dayName = detectDayFromFilename(file.name);
updateDayLabel(dayName);
}
}
});
// Handle click selection
input.addEventListener('change', function() {
if (this.files && this.files[0]) {
showPreview(this.files[0]);
const file = this.files[0];
showPreview(file);
if (isStegoZone) {
const dayName = detectDayFromFilename(file.name);
updateDayLabel(dayName);
}
}
});