{"package_name":"dev.animeshvarma.sigil","name":"Sigil","summary":"Open-source zero-trust cryptography & privacy suite with multi-layer encryption.","category":"Security","icon_url":"/api/icon/dev.animeshvarma.sigil","latest_version_code":405,"latest_version_name":"0.4.5","apk_url":"/api/apk/dev.animeshvarma.sigil","apk_size":17985685,"apk_sha256":"327afc1dfac360778448ff41bb53b1e0b9feea0fedf50d6fe084ca456487a62c","source_kind":"fdroid-repo","repo_slug":"izzyondroid","last_updated":1779371400,"release_timestamp":1769888620,"description":"<p>Sigil is an open-source, advanced encryption utility built for defense-in-depth and memory safety. Unlike standard tools that rely on a single algorithm, Sigil employs a multi-layered, configurable architecture to ensure your data remains secure against sophisticated cryptanalysis.</p><p>The application operates entirely offline, performing all cryptographic operations locally on your device with a modern Material 3 interface that balances high-level security with usability.</p><p><strong>Core Security Features</strong></p><ul><li><strong>Encryption Profiles:</strong> Customize your security posture. Switch between \"Standard AES-GCM\" (Raw mode) for compatibility with external tools, or the \"Sigil Chain\" for maximum defense.</li><li><strong>Multi-Layer Cascade:</strong> The default Sigil Chain wraps your data in a hybrid cascade of XChaCha20-Poly1305 + Serpent-CBC + Twofish-CBC + AES-256-GCM. This defense-in-depth approach ensures that even if one algorithm is compromised, your data remains protected by independent layers.</li><li><strong>Zero-Knowledge Auth:</strong> Secure the app with a numeric PIN or a strong alphanumeric Password. Credentials are hashed using Salted Argon2id and never stored in a reversible format.</li><li><strong>Hardware-Backed Vault:</strong> When supported by the device, master keys are generated and stored in the Android Keystore (or StrongBox). Saved encryption passwords never touch the disk in plaintext.</li><li><strong>Memory Hygiene:</strong> Sensitive data buffers are zeroed where possible after use to reduce exposure to memory dumps.</li></ul><p><strong>Privacy &amp; System Hardening</strong></p><ul><li><strong>Screen Security:</strong> Prevents screenshots and hides app content in the \"Recent Apps\" overview using <code>FLAG_SECURE</code>, protecting against visual snooping and malicious screen recorders.</li><li><strong>Clipboard Protection:</strong> Automatic wipe timers and Android 13+ sensitive content flags prevent clipboard m","categories":["Security"]}