CryptKB
工具
免费 · 专为 iPad 设计
CryptKB helps you encrypt message text before it leaves your iPhone or iPad.
Use the custom keyboard to write a message, choose a password, and insert an encrypted payload into Messages or another text field. Or open the Messages extension to stage a CryptKB bubble inside a Messages draft. The other person can open the same payload in CryptKB and decrypt it locally with the matching password.
Why people use CryptKB:
- Local encrypt and decrypt on device
- Custom keyboard for ordinary text fields
- Messages extension for composing and opening CryptKB bubbles
- AES-256-GCM encryption with PBKDF2-HMAC-SHA256 key derivation
- ASCII-safe payload format for copy, paste, and sharing
- Optional saved conversation passwords protected by Face ID or device passcode
- No account creation, no backend relay, no analytics SDKs, and no ad tracking in the app
- Built-in playground, settings, privacy notes, and diagnostics
How it works:
1. Switch to CryptKB Keyboard.
2. Type your message.
3. Enter a password.
4. Tap Encrypt & Insert.
5. Review the encrypted text and tap Send yourself.
To decrypt, paste or open a CryptKB payload, enter the matching password, and read the plaintext locally. CryptKB intentionally reveals decrypted text in a local panel instead of writing it back into the conversation automatically.
Important platform notes:
- Apple does not allow third-party keyboards to tap the host app's Send button, so sending is always manual.
- Password recovery is not possible by design.
- CryptKB protects message content inside its encrypted payload, not message metadata like recipients, timestamps, screenshots, or notification previews.
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开发者“Seth Farrington18896201822”已表明该 App 的隐私规范可能包括下述数据处理方式。更多相关信息，请参阅 开发者隐私政策 。
未收集数据
开发者不会从此 App 中收集任何数据。
辅助功能
开发者尚未表明此 App 支持哪些辅助功能。 进一步了解
信息
- 提供者
- Seth Farrington
- 大小
- 4.9 MB
- 类别
- 工具
- 兼容性
设备需装有 iOS 17.0 或更高版本。
- iPhone
设备需装有 iOS 17.0 或更高版本。 - iPad
设备需装有 iPadOS 17.0 或更高版本。 - Mac
需要 macOS 14.0 或更高版本以及装有 Apple M1 或更高版本芯片的 Mac。 - Apple Vision
设备需装有 visionOS 1.0 或更高版本。
- iPhone
- 语言
- 英语
- 年龄分级
4+
- 4+
- 版权
- © 2026 MidState Agency. CryptKB and related marks are property of MidState Agency, all rights reserved.