Secure Shredder v1.2

Secure Shredder v1.2

Release date: 2026-07-04
Version: 1.2 (versionCode 3)
Package: com.viruchith.shredder
Platform: Android (minSdk 24, targetSdk 36)

🚀 Highlights

• Added configurable secure overwrite algorithms:
  • Fast (1-pass)
  • Standard (3-pass, default)
  • DoD 5220.22-M (7-pass)
  • Schneier (7-pass)
  • Gutmann (35-pass)
• Introduced a dedicated Settings screen for algorithm management.
• Moved high-risk controls into a dedicated Danger Zone to reduce accidental destructive actions.
• Improved state-preserving navigation across File Browser, Settings, and About screens.
• Enhanced About screen with clickable external links.

🔒 Security & Safety

• Enforced secure device posture: app access is blocked when lock screen security is not configured.
• Added dual-layer confirmation for Nuclear Option:
  1. Manual phrase verification (NUCLEAR WIPE)
  2. Biometric/device credential authentication
• Preserved defensive filtering for high-risk/system-critical paths during normal shredding.
• Continued foreground-service execution for long-running operations.

🛠 Technical Improvements

• Better algorithm-aware progress tracking across multi-pass workflows.
• Ongoing use of bounded in-app console logs to avoid memory bloat.
• Project cleanup and maintainability improvements (legacy dead code removal).

⚠️ Important Notes

• Nuclear Option triggers a free-space wipe step and then a factory reset (DevicePolicyManager.wipeData(0)).
• Factory reset removes user apps and data, including Secure Shredder.
• On modern flash storage (eMMC/UFS), physical overwrite behavior is constrained by FTL/wear leveling characteristics.

📦 Assets

• app-release.apk (attach to this release)

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Data deletion is irreversible. Use with caution.