RUS PDF Editor Live

RUS PDF Editor is an application designed to enhance PDF document workflow on mobile devices. It's an extension of the desktop program rus-pdf and offers the following core features: 1. Document Viewing and Editing: * PDF Viewer: Fast document display with support for zooming and smooth page scrolling. * Text & Image Annotation: Text annotation tool with freely adjustable size and color. 1. Digital Signatures: * Inserting images from the camera or photo library, with the Magic Wand feature to instantly remove the white background from signature or stamp images. * Undo/Redo: A system for reversing edits for ease of use. 2. Advanced Digital Signing: * Standard Compliance: Supports PAdES-B (PDF Advanced Electronic Signatures) standard, using .p12/.pfx certificate types. * Long-Term Validation (LTV): Supports embedding Certificate Status Verification Information (OCSP/CRL), ensuring signatures remain verifiable even if the certificate expires in the future. * Trusted Timestamping (TSA): Supports the standard RFC 3161 timestamping from Digicert to officially verify the signing time. * Biometric Security: Enforces facial recognition (Face ID) or fingerprint authentication (Touch ID) before every signature. * Invisible Signing: Supports invisible signatures for documents that prioritize data accuracy but do not require a visible signature on the page. 3. Validation (Verification System): * Auto-Verification: Instantly verifies digital signatures in documents upon opening the file. * Detailed Report: Displays signature validity, document integrity (including any post-signing modifications), and chain of trust. * Built-in Root CA: Includes a set of root certificates (Thailand Private Root CA) for domestic use. 4. File and System Integration: * File Sharing & Deep Links: Supports direct opening of PDF and certificate files (.p12) from other applications (e.g., email, LINE). * Certificate Store: Secure management system for private certificates and Root CAs. * Bilingual Support: Supports two languages ​​(Thai/English) with local date formatting (Buddhist Era/Gregorian Calendar).