Repository navigation
Expand file tree
/
Copy pathOffCryptAndroid.html
More file actions
646 lines (594 loc) · 35.9 KB
/
Copy pathOffCryptAndroid.html
File metadata and controls
646 lines (594 loc) · 35.9 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
<!DOCTYPE html>
<html lang="en" itemscope itemtype="https://schema.org/WebPage">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
<title>OffCrypt: Secure Message Encryption for Android</title>
<meta name="description"
content="Best secure messaging app without internet - OffCrypt offers military grade encryption for Android with offline file encryption, self-destructing messages, RSA 4096.">
<meta name="author" content="OffCrypt">
<meta name="last-modified" content="2026-10-20">
<meta name="robots" content="index, follow">
<link rel="canonical" href="https://www.dev-offcode.com/OffCryptAndroid.html">
<link rel="alternate" hreflang="en" href="https://www.dev-offcode.com/OffCryptAndroid.html">
<link rel="alternate" hreflang="x-default" href="https://www.dev-offcode.com/OffCryptAndroid.html">
<link rel="icon" type="image/x-icon" href="/favicon.ico">
<link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png">
<link rel="icon" type="image/png" sizes="32x32" href="/favicon-32x32.png">
<link rel="icon" type="image/png" sizes="16x16" href="/favicon-16x16.png">
<link rel="manifest" href="/manifest.json">
<!-- Preload critical resources -->
<link rel="preload" href="styles-automation.css?v=3.1.8" as="style">
<link rel="preload" href="gallery-simple.css?v=3.0.2" as="style">
<link rel="preload" href="OffCrypt-Android.jpg" as="image">
<!-- Core Web Vitals optimization -->
<meta name="theme-color" content="#c45c26">
<meta name="msapplication-TileColor" content="#c45c26">
<meta name="msapplication-config" content="/browserconfig.xml">
<meta property="og:type" content="website">
<meta property="og:locale" content="en_US">
<meta property="og:url" content="https://www.dev-offcode.com/OffCryptAndroid.html">
<meta property="og:title" content="OffCrypt: Secure Message Encryption for Android">
<meta property="og:description" content="A fully offline Android application for private and secure communication.">
<meta property="og:image" content="https://www.dev-offcode.com/OffCrypt-Android.jpg">
<meta name="twitter:card" content="summary_large_image">
<meta name="twitter:site" content="@OffCryptAndroid">
<meta name="twitter:creator" content="@OffCryptAndroid">
<meta name="twitter:url" content="https://www.dev-offcode.com/OffCryptAndroid.html">
<meta name="twitter:title" content="OffCrypt: Secure Message Encryption for Android">
<meta name="twitter:description"
content="A fully offline Android application for private and secure communication.">
<meta name="twitter:image" content="https://www.dev-offcode.com/OffCrypt-Android.jpg">
<!-- Social Media Links -->
<meta property="og:see_also" content="https://www.instagram.com/off.crypt86/">
<meta property="og:see_also" content="https://www.youtube.com/@OffCrypt">
<meta name="instagram:site" content="@off.crypt86">
<meta name="youtube:channel" content="@OffCrypt">
<!-- Structured Data Schema -->
<script type="application/ld+json">
{
"@context": "https://schema.org",
"@type": "MobileApplication",
"name": "OffCrypt",
"applicationCategory": "SecurityApplication",
"operatingSystem": "Android",
"description": "Secure offline encryption app for Android with PGP-style messaging and RSA-4096 encryption",
"url": "https://www.dev-offcode.com/OffCryptAndroid.html",
"image": "https://www.dev-offcode.com/OffCrypt-Android.jpg",
"offers": {
"@type": "Offer",
"price": "0",
"priceCurrency": "EUR",
"availability": "https://schema.org/InStock"
},
"downloadUrl": "https://www.dev-offcode.com/OffCryptAndroid.html",
"inLanguage": ["en"],
"author": {
"@type": "Person",
"@id": "https://www.dev-offcode.com/OffCryptAndroid.html#author",
"name": "EmptyCode0x86",
"url": "https://www.dev-offcode.com",
"sameAs": [
"https://twitter.com/OffCryptAndroid",
"https://www.instagram.com/off.crypt86/",
"https://www.youtube.com/@OffCrypt",
"https://github.com/emptycode0x86",
"https://bsky.app/profile/off-crypt86.bsky.social",
"https://www.linkedin.com/in/off-crypt-b94175382/"
]
},
"publisher": {
"@type": "Organization",
"@id": "https://www.dev-offcode.com/#organization",
"name": "OffCrypt",
"url": "https://www.dev-offcode.com",
"logo": {
"@type": "ImageObject",
"url": "https://www.dev-offcode.com/OffCrypt-Android.jpg"
},
"sameAs": [
"https://twitter.com/OffCryptAndroid",
"https://www.instagram.com/off.crypt86/",
"https://www.youtube.com/@OffCrypt",
"https://bsky.app/profile/off-crypt86.bsky.social",
"https://www.linkedin.com/in/off-crypt-b94175382/"
]
},
"softwareVersion": "2.0",
"datePublished": "2024-01-01",
"dateModified": "2026-10-20",
"featureList": [
"AES-256 encryption",
"RSA-4096 security",
"Offline messaging",
"Self-destructing messages",
"File encryption",
"PGP-style messaging"
],
"screenshot": [
"https://www.dev-offcode.com/OffCrypt-Android.jpg"
],
"softwareHelp": {
"@type": "CreativeWork",
"name": "OffCrypt Documentation",
"url": "https://www.dev-offcode.com/changelog.html"
}
}
</script>
<!-- FAQ Schema -->
<script type="application/ld+json">
{
"@context": "https://schema.org",
"@type": "FAQPage",
"mainEntity": [
{
"@type": "Question",
"name": "Does OffCrypt work without internet connection?",
"acceptedAnswer": {
"@type": "Answer",
"text": "Yes! OffCrypt is a fully offline Android application. All encryption and decryption happens locally on your device, ensuring your messages never leave your phone or touch any servers."
}
},
{
"@type": "Question",
"name": "What encryption algorithms does OffCrypt use?",
"acceptedAnswer": {
"@type": "Answer",
"text": "OffCrypt uses RSA-4096 for key exchange, AES-256 for message encryption, and supports PGP-style cryptography. These are standard, widely reviewed algorithms."
}
},
{
"@type": "Question",
"name": "How do self-destructing messages work?",
"acceptedAnswer": {
"@type": "Answer",
"text": "Self-destructing messages automatically delete themselves after being read or after a specified time period. Once deleted, the encrypted data is securely wiped from your device and cannot be recovered."
}
},
{
"@type": "Question",
"name": "Can I encrypt files with OffCrypt?",
"acceptedAnswer": {
"@type": "Answer",
"text": "Yes! OffCrypt supports file encryption for any file type. You can encrypt documents, photos, videos, and other files using the same strong encryption as messages."
}
},
{
"@type": "Question",
"name": "Is OffCrypt free to use?",
"acceptedAnswer": {
"@type": "Answer",
"text": "Yes, OffCrypt is completely free and open source. There are no hidden costs, subscriptions, or premium features. All encryption features are available to everyone."
}
},
{
"@type": "Question",
"name": "What Android versions are supported?",
"acceptedAnswer": {
"@type": "Answer",
"text": "OffCrypt supports Android 5.0 (Lollipop) and newer versions. The app is optimized for modern Android devices while maintaining compatibility with older phones."
}
}
]
}
</script>
<link rel="stylesheet" href="styles-automation.css?v=3.1.8">
<link rel="stylesheet" href="styles-at-extras.css?v=3.2.1">
<link rel="stylesheet" href="gallery-simple.css?v=3.0.2">
<!-- Tracking scripts loaded via cookie-consent.js after user consent -->
</head>
<body class="at-page">
<button class="mobile-menu-toggle" aria-label="Toggle Menu">
<span class="hamburger"></span>
</button>
<header class="at-nav">
<div class="at-nav__inner">
<aside class="sidebar">
<div class="sidebar-header">
<div class="sidebar-title">OffCode</div>
</div>
<nav class="sidebar-nav">
<ul class="sidebar-menu">
<li class="menu-item">
<a href="index.html" class="menu-link">
<span class="menu-icon at-icon at-icon--home" aria-hidden="true"></span>
<span class="menu-text">Home</span>
</a>
</li>
<li class="menu-item active">
<a href="OffCryptAndroid.html" class="menu-link">
<span class="menu-icon at-icon at-icon--phone" aria-hidden="true"></span>
<span class="menu-text">Android app</span>
</a>
</li>
<li class="menu-item">
<a href="OffCryptDesktop.html" class="menu-link">
<span class="menu-icon at-icon at-icon--monitor" aria-hidden="true"></span>
<span class="menu-text">Desktop App</span>
</a>
</li>
<li class="menu-item">
<a href="ScreenLockBuilder.html" class="menu-link">
<span class="menu-icon at-icon at-icon--lock" aria-hidden="true"></span>
<span class="menu-text">Screen Lock Builder</span>
</a>
</li>
<li class="menu-item">
<a href="ScreenLockBuilderPremium.html" class="menu-link">
<span class="menu-icon at-icon at-icon--star" aria-hidden="true"></span>
<span class="menu-text">Premium Builder</span>
</a>
</li>
<li class="menu-item">
<a href="AutomationTool.html" class="menu-link">
<span class="menu-icon at-icon at-icon--cpu" aria-hidden="true"></span>
<span class="menu-text">Automation Tool</span>
</a>
</li>
<li class="menu-item">
<a href="RemoteControl.html" class="menu-link">
<span class="menu-icon at-icon at-icon--cast" aria-hidden="true"></span>
<span class="menu-text">Web Remote Control</span>
</a>
</li>
<li class="menu-item">
<a href="TorChatPage.html" class="menu-link">
<span class="menu-icon at-icon at-icon--layers" aria-hidden="true"></span>
<span class="menu-text">Tor Chat</span>
</a>
</li>
<li class="menu-item">
<a href="Community.html" class="menu-link">
<span class="menu-icon at-icon at-icon--message" aria-hidden="true"></span>
<span class="menu-text">Community</span>
</a>
</li>
<li class="menu-item">
<a href="https://ko-fi.com/emptyc0de" class="menu-link" target="_blank" rel="noopener noreferrer">
<span class="menu-icon at-icon at-icon--heart" aria-hidden="true"></span>
<span class="menu-text">Donate</span>
</a>
</li>
<li class="menu-item">
<a href="PrivacyPolicy.html" class="menu-link">
<span class="menu-icon at-icon at-icon--shield" aria-hidden="true"></span>
<span class="menu-text">Privacy Policy</span>
</a>
</li>
</ul>
</nav>
<div class="sidebar-footer">
<p class="footer-text">Social media</p>
<div class="sidebar-social-divider"></div>
<div class="sidebar-social">
<a href="https://x.com/OffCryptAndroid" target="_blank" rel="noopener noreferrer"
aria-label="Follow OffCrypt on X">
<span class="sidebar-social-icon at-icon at-icon--x" aria-hidden="true"></span>
<span class="sidebar-social-label">X</span>
</a>
<a href="https://www.instagram.com/off.crypt86/" target="_blank" rel="noopener noreferrer"
aria-label="Follow OffCrypt on Instagram">
<span class="sidebar-social-icon at-icon at-icon--camera" aria-hidden="true"></span>
<span class="sidebar-social-label">Instagram</span>
</a>
<a href="https://www.tiktok.com/@offcrypt0" target="_blank" rel="noopener noreferrer"
aria-label="Follow OffCrypt on TikTok">
<span class="sidebar-social-icon at-icon at-icon--music" aria-hidden="true"></span>
<span class="sidebar-social-label">TikTok</span>
</a>
<a href="https://www.youtube.com/@OffCrypt" target="_blank" rel="noopener noreferrer"
aria-label="Follow OffCrypt on YouTube">
<span class="sidebar-social-icon at-icon at-icon--play" aria-hidden="true"></span>
<span class="sidebar-social-label">YouTube</span>
</a>
<a href="https://bsky.app/profile/off-crypt86.bsky.social" target="_blank" rel="noopener noreferrer"
aria-label="Follow OffCrypt on Bluesky">
<span class="sidebar-social-icon at-icon at-icon--butterfly" aria-hidden="true"></span>
<span class="sidebar-social-label">Bluesky</span>
</a>
<a href="https://www.linkedin.com/in/off-crypt-b94175382/" target="_blank" rel="noopener noreferrer"
aria-label="Follow OffCrypt on LinkedIn">
<span class="sidebar-social-icon at-icon at-icon--briefcase" aria-hidden="true"></span>
<span class="sidebar-social-label">LinkedIn</span>
</a>
</div>
</div>
</aside>
</div>
</header>
<div class="main-wrapper">
<main class="at-main">
<section class="at-hero">
<span class="at-hero__eyebrow">Secure Android Encryption</span>
<h1 class="at-hero__title">OffCrypt - Android</h1>
<p class="at-hero__subtitle">Open-source</p>
<div class="at-hero__rule" aria-hidden="true"></div>
<p class="at-hero__lead">
OffCrypt is an offline encryption app for secure text and file
encryption using well-known cryptographic algorithms. A secure messaging app
that works without an internet connection, with both password-based and RSA public-key encryption
(AES-256 and RSA-4096) for Android.
</p>
<p class="at-hero__body">
This is a fully offline file encryption app - it does not connect to the internet or collect
any user data. All encryption and decryption happens locally on your device. Perfect for
journalists, business professionals, and privacy-conscious users who need secure document
sharing on Android without cloud dependencies.
</p>
<p class="at-hero__body">
Key features include self-destructing messages for Android, secure file deletion, how to
encrypt files on Android offline capabilities, and instant RSA 4096 encryption mobile app
functionality without account registration. Built for Android in Kotlin with zero data
collection policy for private messaging.
</p>
<p class="at-hero__body">
Need a <a href="ScreenLockBuilder.html">Windows screen lock</a>? Build a portable screen
locker for Windows with a custom message and password.
</p>
<div class="at-hero__cta-row">
<a href="#download" class="at-btn at-btn--primary">Download OffCrypt</a>
<a href="#pictures" class="at-btn at-btn--ghost">View Screenshots</a>
</div>
<div class="at-hero__chips">
<span class="at-chip"><span class="at-icon at-icon--key" aria-hidden="true"></span> PGP-Style Public Key Cryptography</span>
<span class="at-chip"><span class="at-icon at-icon--monitor" aria-hidden="true"></span> Open-source</span>
<span class="at-chip"><span class="at-icon at-icon--lock" aria-hidden="true"></span> Fully Offline application</span>
<span class="at-chip"><span class="at-icon at-icon--file" aria-hidden="true"></span> File Encryption</span>
</div>
</section>
<!-- Screenshot carousel -->
<section id="pictures" class="product-screens">
<div class="gallery-header">
<h2 class="gallery-title">Screenshots</h2>
</div>
<p class="features-carousel-hint">Browse screenshots with the arrows or by swiping</p>
<div class="features-carousel" id="oc-pictures-carousel" data-features-carousel>
<button type="button" class="features-carousel-btn prev"
aria-label="Previous screenshot"
aria-controls="oc-pictures-track">
<span aria-hidden="true">‹</span>
</button>
<button type="button" class="features-carousel-btn next"
aria-label="Next screenshot"
aria-controls="oc-pictures-track">
<span aria-hidden="true">›</span>
</button>
<div class="features-carousel-track" id="oc-pictures-track" role="region"
aria-roledescription="carousel" aria-label="OffCrypt Android screenshots" tabindex="0">
<figure class="at-feature-card screenshot-card image-card" data-image="OffCrypt-Android.jpg" data-title="OffCrypt Android">
<div class="screenshot-frame">
<img src="OffCrypt-Android.jpg" data-full="OffCrypt-Android.jpg" alt="OffCrypt Android app main interface" loading="lazy" decoding="async">
</div>
<figcaption>OffCrypt Android app main interface
<span class="screenshot-zoom-hint">Click to enlarge</span>
</figcaption>
</figure>
<figure class="at-feature-card screenshot-card image-card" data-image="OffCryptDecryption.jpg" data-title="Decryption">
<div class="screenshot-frame">
<img src="OffCryptDecryption.jpg" data-full="OffCryptDecryption.jpg" alt="OffCrypt decryption interface with RSA 4096 encryption" loading="lazy" decoding="async">
</div>
<figcaption>Decryption with RSA 4096
<span class="screenshot-zoom-hint">Click to enlarge</span>
</figcaption>
</figure>
<figure class="at-feature-card screenshot-card image-card" data-image="FileSettings.jpg" data-title="Security settings">
<div class="screenshot-frame">
<img src="FileSettings.jpg" data-full="FileSettings.jpg" alt="OffCrypt security settings with AES-256 encryption" loading="lazy" decoding="async">
</div>
<figcaption>Security settings with AES-256
<span class="screenshot-zoom-hint">Click to enlarge</span>
</figcaption>
</figure>
<figure class="at-feature-card screenshot-card image-card" data-image="FileEncryption.jpg" data-title="File encryption">
<div class="screenshot-frame">
<img src="FileEncryption.jpg" data-full="FileEncryption.jpg" alt="OffCrypt file encryption interface" loading="lazy" decoding="async">
</div>
<figcaption>File encryption
<span class="screenshot-zoom-hint">Click to enlarge</span>
</figcaption>
</figure>
<figure class="at-feature-card screenshot-card image-card" data-image="FileDecryption.jpg" data-title="File decryption">
<div class="screenshot-frame">
<img src="FileDecryption.jpg" data-full="FileDecryption.jpg" alt="OffCrypt file decryption settings panel" loading="lazy" decoding="async">
</div>
<figcaption>File decryption
<span class="screenshot-zoom-hint">Click to enlarge</span>
</figcaption>
</figure>
</div>
<div class="features-carousel-dots" role="tablist" aria-label="Screenshot slides"></div>
</div>
</section>
<!-- Features Section -->
<section id="features" class="at-section">
<div class="at-section__header">
<h2 class="at-section__title">Features</h2>
<p class="at-section__subtitle">Explore all 36+ security features</p>
</div>
<div class="at-feature-grid">
<!-- Cryptography Feature -->
<div class="at-feature-card">
<div class="feature-icon at-icon at-icon--shield" aria-hidden="true"></div>
<h3>Modern Cryptography</h3>
<p>Encryption algorithms</p>
<ul class="at-feature-list">
<li><span class="at-icon at-icon--key" aria-hidden="true"></span> RSA-2048 & RSA-4096</li>
<li><span class="at-icon at-icon--shield" aria-hidden="true"></span> AES-256-GCM encryption</li>
<li><span class="at-icon at-icon--shield" aria-hidden="true"></span> PBKDF2 key derivation</li>
<li><span class="at-icon at-icon--tag" aria-hidden="true"></span> HmacSHA256 integrity</li>
<li><span class="at-icon at-icon--zap" aria-hidden="true"></span> SHA-256 hash functions</li>
<li><span class="at-icon at-icon--dice" aria-hidden="true"></span> SecureRandom generation</li>
</ul>
</div>
<!-- Advanced Security Feature -->
<div class="at-feature-card">
<div class="feature-icon at-icon at-icon--sparkles" aria-hidden="true"></div>
<h3>Advanced Security</h3>
<p>Protection features</p>
<ul class="at-feature-list">
<li><span class="at-icon at-icon--pen" aria-hidden="true"></span> Digital signatures</li>
<li><span class="at-icon at-icon--repeat" aria-hidden="true"></span> Perfect Forward Secrecy</li>
<li><span class="at-icon at-icon--clock" aria-hidden="true"></span> Expiring messages</li>
<li><span class="at-icon at-icon--flame" aria-hidden="true"></span> Burn After Reading</li>
<li><span class="at-icon at-icon--lock" aria-hidden="true"></span> Version detection</li>
</ul>
</div>
<!-- Attack Protection Feature -->
<div class="at-feature-card">
<div class="feature-icon at-icon at-icon--shield" aria-hidden="true"></div>
<h3>Attack Protection</h3>
<p>Defense against sophisticated threats</p>
<ul class="at-feature-list">
<li><span class="at-icon at-icon--scales" aria-hidden="true"></span> Constant-time operations</li>
<li><span class="at-icon at-icon--search" aria-hidden="true"></span> Data validation</li>
<li><span class="at-icon at-icon--close" aria-hidden="true"></span> Replay attack prevention</li>
<li><span class="at-icon at-icon--shield" aria-hidden="true"></span> Side-channel protection</li>
<li><span class="at-icon at-icon--shield" aria-hidden="true"></span> MITM protection</li>
</ul>
</div>
<!-- Memory Safety Feature -->
<div class="at-feature-card">
<div class="feature-icon at-icon at-icon--broom" aria-hidden="true"></div>
<h3>Memory Safety</h3>
<p>Complete sensitive data protection</p>
<ul class="at-feature-list">
<li><span class="at-icon at-icon--broom" aria-hidden="true"></span> Data scrubbing (3x overwrite)</li>
<li><span class="at-icon at-icon--database" aria-hidden="true"></span> Char/ByteArray wiping</li>
<li><span class="at-icon at-icon--recycle" aria-hidden="true"></span> Aggressive Garbage Collection</li>
<li><span class="at-icon at-icon--clipboard" aria-hidden="true"></span> Log buffer clearing</li>
<li><span class="at-icon at-icon--repeat" aria-hidden="true"></span> String pool cleanup</li>
</ul>
</div>
<!-- UI Security Feature -->
<div class="at-feature-card">
<div class="feature-icon at-icon at-icon--phone" aria-hidden="true"></div>
<h3>UI Security</h3>
<p>Advanced interface protection</p>
<ul class="at-feature-list">
<li><span class="at-icon at-icon--clipboard" aria-hidden="true"></span> Secure Clipboard</li>
<li><span class="at-icon at-icon--lock" aria-hidden="true"></span> Lifecycle cleanup</li>
<li><span class="at-icon at-icon--pause" aria-hidden="true"></span> Background cleanup</li>
<li><span class="at-icon at-icon--alert" aria-hidden="true"></span> Burn dialog warnings</li>
<li><span class="at-icon at-icon--eye" aria-hidden="true"></span> Screenshot protection</li>
</ul>
</div>
<!-- Professional Features -->
<div class="at-feature-card">
<div class="feature-icon at-icon at-icon--cpu" aria-hidden="true"></div>
<h3>Features</h3>
<p>Advanced cryptographic capabilities</p>
<ul class="at-feature-list">
<li><span class="at-icon at-icon--brain" aria-hidden="true"></span> RSA OAEP + SHA-256</li>
<li><span class="at-icon at-icon--scroll" aria-hidden="true"></span> RSA signature with SHA-512</li>
<li><span class="at-icon at-icon--package" aria-hidden="true"></span> Version Byte detection</li>
<li><span class="at-icon at-icon--repeat" aria-hidden="true"></span> Metadata fallback</li>
<li><span class="at-icon at-icon--upload" aria-hidden="true"></span> Encrypted file export</li>
<li><span class="at-icon at-icon--lock" aria-hidden="true"></span> Encrypted RSA keystore</li>
</ul>
</div>
</div>
</section>
<!-- Download Section -->
<section id="download" class="at-section">
<div class="at-download">
<h2 class="at-download__title">Download now</h2>
<div class="at-download__notice">
<p><strong><span class="at-icon at-icon--megaphone" aria-hidden="true"></span> Latest v2.0 available, F-Droid v1.0 coming soon</strong></p>
</div>
<div class="at-download__actions">
<a href="https://github.com/EmptyCode0x86/OffCryptPage/releases/download/v2.0.0/OffCrypt.apk"
class="at-btn at-btn--primary" target="_blank" rel="noopener noreferrer"
aria-label="Download OffCrypt"><span class="at-icon at-icon--download" aria-hidden="true"></span> Download OffCrypt (.apk)
</a>
<a href="https://github.com/EmptyCode0x86/Off_crypt1" class="at-btn at-btn--ghost"
target="_blank" rel="noopener noreferrer" aria-label="View OffCrypt on GitHub"><span class="at-icon at-icon--monitor" aria-hidden="true"></span> View on GitHub
</a>
<a href="changelog.html" class="at-btn at-btn--ghost" aria-label="View OffCrypt Changelog"><span class="at-icon at-icon--clipboard" aria-hidden="true"></span> Changelog
</a>
</div>
<p class="at-download__info">Free • No ads • Open source • GPL-3.0 License</p>
<div class="at-download__badges">
<span class="at-chip-badge"><span class="at-icon at-icon--shield" aria-hidden="true"></span> RSA-4096</span>
<span class="at-chip-badge"><span class="at-icon at-icon--shield" aria-hidden="true"></span> AES-256-GCM</span>
<span class="at-chip-badge"><span class="at-icon at-icon--flame" aria-hidden="true"></span> Burn After Reading</span>
<span class="at-chip-badge"><span class="at-icon at-icon--zap" aria-hidden="true"></span> Perfect Forward Secrecy</span>
</div>
</div>
</section>
<!-- PIA Horizontal Banner -->
<section class="at-section">
<div class="at-pia-banner">
<div>
<h3><span class="at-icon at-icon--lock" aria-hidden="true"></span> Complete Your Privacy Protection</h3>
<p>You've secured your messages with OffCrypt - now protect your internet connection too</p>
<p class="at-highlight"><strong>Multi-hop:</strong> Channel traffic through additional servers
for extra encryption layers</p>
<a href='https://www.privateinternetaccess.com/pages/buy-vpn/npw' class="at-btn at-btn--primary"
title='Get Private Internet Access VPN'><span class="at-icon at-icon--shield" aria-hidden="true"></span> Complete Protection
</a>
</div>
<div>
<a href='https://www.privateinternetaccess.com/pages/buy-vpn/npw'
title='Private Internet Access VPN'>
<img alt='Private Internet Access - Complete Privacy Protection' border='0'
src='PIALogo.png'>
</a>
</div>
</div>
</section>
<div class="at-badges">
<a href="https://startupfa.me/s/offcrypt?utm_source=www.dev-offcode.com" target="_blank"
rel="noopener noreferrer">
<img src="https://startupfa.me/badges/featured-badge-small.webp"
alt="OffCrypt - Featured on Startup Fame" width="224" height="36" />
</a>
</div>
<section class="at-section">
<div class="at-section__header">
<h2 class="at-section__title">Explore related privacy tools</h2>
<p class="at-section__subtitle">Connect your Android encryption workflow with the most relevant
Windows-side tools on this site.</p>
</div>
<div class="at-related">
<div class="at-related__item">
<h3><span class="at-icon at-icon--monitor" aria-hidden="true"></span> OffCrypt Desktop for Windows</h3>
<p>Continue the same offline encryption mindset on Windows with local messaging, secure file
handling, and modern cryptography.</p>
<a href="OffCryptDesktop.html" class="at-related__link">Explore OffCrypt Desktop</a>
</div>
<div class="at-related__item">
<h3><span class="at-icon at-icon--lock" aria-hidden="true"></span> Windows Screen Lock Builder</h3>
<p>Need device-level protection too? Build a custom Windows screen lock to secure access in
addition to encrypted communication.</p>
<a href="ScreenLockBuilder.html" class="at-related__link">View Screen Lock Builder</a>
</div>
<div class="at-related__item">
<h3><span class="at-icon at-icon--clipboard" aria-hidden="true"></span> Track Android updates</h3>
<p>Review the latest OffCrypt release notes to see new encryption, file protection, and
messaging improvements.</p>
<a href="changelog.html" class="at-related__link">Read OffCrypt changelog</a>
</div>
</div>
</section>
</main>
</div>
<!-- Custom Image Modal (body-level so it stacks above the fixed sidebar) -->
<div id="imageModal" class="image-modal" aria-hidden="true">
<div class="modal-content">
<span class="close" aria-label="Close">×</span>
<img id="modalImage" src="" alt="">
<div class="modal-info">
<h3 id="modalTitle"></h3>
<p id="modalDesc"></p>
</div>
</div>
</div>
<!-- Application JavaScript -->
<script src="script.js?v=3.1.0" defer></script>
<script src="features-carousel.js" defer></script>
<script src="gallery.js?v=3.0.5" defer></script>
<!-- Cookie Consent Banner -->
<link rel="stylesheet" href="cookie-consent.css">
<script src="cookie-consent.js" defer></script>
</body>
</html>