Dumm Zeuch 4/4/2026

TxtCipher: A Browser-Based Text Encryption Tool

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This article introduces TxtCipher, a self-contained web application for encrypting and decrypting text entirely in the browser without server or installation. It uses the RC4 stream cipher with Base64 encoding, compatible with TxtCrypt on macOS. Features include single-file design, offline support via service worker, dark/light mode, responsive layout, and paste-friendly input. The article also warns that RC4 is cryptographically broken and should not be used for sensitive data. It covers usage, technical details, and the tool's development history.

TxtCipher: A Browser-Based Text Encryption Tool

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