AI summary
Offline-first file encryption app using ChaCha20-Poly1305 (AEAD) to secure files before storage or transmission. Processes data in RAM to avoid plaintext fragments, supports biometric unlock, and uses transparent stacked extensions like .tgz.cha to show the processing chain.
Generated by AI. May contain inaccuracies.
About this app
ChaCrypt is an "Offline-First" file security ecosystem designed to protect your data sovereignty. In an era where the Internet is an "insecure highway" filled with surveillance, interception, and leaks, ChaCrypt provides a local fortification to secure your sensitive information before it ever leaves your machine.
🛡 Why ChaCrypt? The Philosophy "Offline-First, Data Sovereignty" is not just a slogan; it is a defense line built against the biggest security risks in modern data flow:
Online Transmission Security: Sensitive data must be reinforced locally before entering insecure channels such as instant messaging, cloud drives, or email. Ensuring that data is encrypted before it leaves your device is the only way to prevent eavesdropping, interception, and leaks at the source. Offline Storage Security: Provides "cold protection" for sensitive assets on local disks, NAS, or mobile media. In cases of physical device loss or unauthorized access, the ChaCha20-Poly1305 standard ensures that data sovereignty is never violated. ChaCrypt operates on a Zero-Trust Local principle:
Local Security Reinforcement: Adheres to the "Fortify First, Transfer Later" rule; security does not rely on the promises of third-party providers. Memory-Level Processing: We avoid writing temporary plaintext files to disk. Decryption, previewing, and editing happen in RAM whenever possible to prevent physical data fragments. Transparency & Auditability: Using a "Stacked Extension" strategy (e.g., .tgz.cha), you can instantly see the exact processing chain (Archived -> Compressed -> Encrypted).
⚡ The Standard: ChaCha20-Poly1305 (AEAD) We exclusively use the ChaCha20-Poly1305 standard for all operations. Why?
Extreme Performance: Compared to AES, it has an overwhelming advantage in software implementation, especially on mobile devices and for massive data (GB/TB scale) transfers. Physical-Grade Integrity: As an AEAD algorithm, it provides a tamper-proof signature for every offline asset. If a file loses a single bit on disk due to hardware failure or malicious modification, decryption fails immediately, ensuring the reliability of stored data. Modern Industry Standard: Adopted by Google and the Linux kernel, it is the modern foundation for high-performance security.
🛠 The Ecosystem ChaCrypt provides two specialized tools to serve every type of user, from personal privacy seekers to DevOps professionals.
About this version
- Version
- 1.0.0 (1)
- Size
- 57.96 MB
- Requires Android
- 7.0
- Target SDK
- 24
- Architecture
- arm64-v8a, armeabi-v7a, x86_64
- Downloads
- 12
- Updated
- Jul 23, 2026
- Package
- com.iche2.chabox.android
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