Encoding & Crypto— Guides & Articles

• Text Steganography Cheat Sheet: Codes, Limits, Steps

  Published 2026-08-27

  Text steganography cheat sheet covering the zero-width markers, bit symbols, byte limits, sanitization risks and a verified hide-and-reveal workflow.

  

• Create a Strong PDF Password in Your Browser—No Uploads

  Published 2026-08-27

  Use a free, local password generator to create a high-entropy password for your PDF in seconds—no uploads, no logs, and full cryptographic security.

  

• How to Calculate a SHA-512 Hash and Verify Every Character

  Published 2026-08-27

  Calculate a SHA-512 hash from text or files and verify the full 128-character hex or padded Base64 output against a trusted reference value locally.

  

• How to Generate a SHA256 Hash in Windows

  Published 2026-08-27

  Generate a SHA256 hash in Windows from exact UTF-8 text or local files, then copy the full 256-bit result as lowercase Hex or standard Base64.

  

• Generate an RSA Key Pair in Windows Without OpenSSL

  Published 2026-08-26

  Generate an RSA key pair in Windows right in your browser. Export 2048 or 3072-bit RSA-OAEP PEM files locally without installing OpenSSL or PuTTYgen.

  

• Compare Approaches to Use a ROT47 Encoder Decoder

  Published 2026-08-26

  Compare approaches to use a ROT47 encoder decoder: manual arithmetic, short scripts, and a local browser tool that preserves spaces and non-ASCII characters.

  

• Rail Fence Cipher Decoder Alternative for Exact Text

  Published 2026-08-26

  Use Rail Fence Cipher Decoder to encrypt or decode text with 2–100 rails while preserving spaces, punctuation, case, line breaks, and Unicode.

  

• Convert Punycode to Unicode: Read xn-- Labels

  Published 2026-08-26

  Convert xn-- domains to Unicode with the Punycode Converter — Bootstring decoding runs locally, preserves label boundaries, and never touches the network.

  

• Check Password Strength in Python Without the Regex Trap

  Published 2026-08-26

  Skip the Python regex trap. Review length, patterns, and character groups against NIST-aligned thresholds before committing a password in your code.

  

• Translate Morse Code to English: A Practical Workflow

  Published 2026-08-26

  Translate Morse code to English with a clear workflow based on the ITU-R M.1677-1 standard. Spacing, separators, and common decoding pitfalls explained.