Built and tested against new Swift 6.3 with a few more lines of code cleaned up. Purely a maintenance build.

Code styling changes, more test coverage and error handling. If you feel something deserves being added, please let me know. I'm pretty much out of ideas within this concept until Apple releases new key types, etc.

Minor code cleanup.

Minor build-level security strengthening and optimizations. The binary is now about 400KB lighter - 6.2MB from 6.6MB.

- Under the hood code optimizations. - UI/UX improvements.

- A tutorial has been added for first time users. Skippable. - More code deduplication for UI consistency.

Please submit some feedback at support@krypter.tech. As the sole developer of this app I may be quite biased in terms of user experience. Your feedback matters. - P-384 key support has been completely wiped off the app code. P-521 for the win. - Fewer in-app clicks to decrypt a file or message. - Squished a couple bugs in the encryption flow for contacts from main screen.

- Vastly improved file decryption logic performance as you pick a file for decryption. - More code cleanup. - Lastly, and most importantly, the icon now doesn't look that bad around its corners!

- P384 key creation has been removed. Previously created keys will be usable, work through backups and all encryption operations. Makes no sense to keep them available for creation when you have P521 in all of its glory. - Encrypt a freshly decrypted file for someone else. No need to save it anywhere and go through the whole flow again. - More UI reworks. - Even better test coverage and more under the hood cleanups.

Bug fix: returned krypter:// deep link support. Remnant of a feature that never got through testing. A new customization option for Krypter's main screen. You can now have your contacts and own keys as a carousel, grid of two columns or a list of horizontal rows. You can also move them like apps on iOS main screen. Just hold it a little bit and you shall see an easy way to arrange or delete them right there. Or you know, just hide those sections completely if you want. Or show own keys first and contacts after that.

More internal code cleanup and optimizations. Some minor UI improvements here and there.

Completely redesigned. New Actions tab puts encryption at your fingertips — one tap to encrypt a file or message for any contact or key. Translucent sheets with a cinematic vault-opening animation bring drama to every decryption. - Redesigned home screen with quick-action cards - Translucent encrypt/decrypt sheets that float over your content - Vault animation for decryption — sealed card, scan, dissolve, reveal - Streamlined settings with card-based layout - Faster, leaner crypto engine under the hood

SE Keys Only Mode Lock the app down to Secure Enclave hardware keys. One toggle in Settings hides all software curves — only P-256 keys that physically cannot leave the chip are allowed. For when "good enough" isn't. Streamlined Interface Cleaner, more focused experience. Less clutter, fewer screens — just the tools you need to encrypt, decrypt, and manage keys. Tappable URLs Links in decrypted messages are now automatically detected and tappable. Four-Language Polish Belarusian, English, Russian, and Ukrainian translations cleaned up — 39 stale strings removed, 4 missing ones added.

This is a stable release. No further releases are planned unless bugs are found or Apple introduces some useful SKD changes in CryptoKit to make it even better. - If you open an encrypted message via deep link, you get straight to the message without intermediate rendering of message decryption view. - Much shorter contact and message deep links after switching from hex to base64. - QR codes are now larger and also in contacts for easier sharing. - Fixed iPhone 12/13 mini screen rotation bug that could cause getting stuck on black screen. - You can now also define a password without which the file cannot be decrypted. This does not replace the need for the decryption key. - Send files for encryption from elsewhere in the system.

Better screenshot protection.

Variable-length PIN with no length hints. Enter 6 to 256 digits — observers can't tell where your PIN ends. OK button confirms when you're ready.

**Performance** - Fixed scroll lag when opening key and contact detail views - Optimized crypto layer: deduplicated ciphersuite constants, streamlined keychain operations **Settings** - Simplified version display - New animated footer **Under the Hood** - HKDF helper consolidation across all key managers - Improved metadata resolver performance with cached labels - Enhanced deeplink handling architecture

- Screenshot protection — prevent screen capture and recording while the app is open - Enhanced input security across all text fields - Improved search reliability and error handling - Minor stability improvements

- better localization coverage - screenshot protection on by default - more tests

You can now update an existing contact with a new key.

- bumped software keys backup file to 120 million pbkdf2 iterations - minor cosmetic changes - under the hood optimizations - more secure messages encryption - backwards incompatible - improved encrypted file security - backwards incompatible - p256 software backed keys removed from support

- Complete UI overhaul to make the app easier to use and far less geeky. - Software based keys. And they are securely exportable. - Software keys export into an AES-256 encrypted, password protected file with 50 MILLION pbkdf2 iterations. - Software based keys support the following types: P256, P384, P521, X25519 and XWing post-quantum keys. Note: post-quantum keys are only supported on iOS26+

- Message encryption and decryption with deep link support. - Revamped UI for file encryption and much easier file decryption. - Contacts menu - easy way to store your friend's keys for future file or message encryption. - PIN code support with button randomization. - Duress PIN: separate PIN code that wipes all the app data immediately with no way to restore it. - Sreenshot protection. Optional. - Automatic key identification when you have the right keys. - User defined automatic key expiration date - key gets removed automatically after set date.

Warning: previously encrypted files may not be compatible with the new version. The format has been optimized since then. - Enhanced Security Swift feature enabled for latest iOS and iPhones. - Import file for decryption from outside the app. - Removed file size cap for encryption, made it handle the memory better. - Better UI for simple key sharing and insertion. - New compact public key format, 50% of the previous version. - And of course, a new icon!

UI improvements. Added simpler public key sharing, encrypted file import directly to app for better user experience.