Understand web authentication

From how data travels as text (Base64, URLs) to what a JWT really contains.

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  1. Base64Encode and decode text and files as Base64 and Base64URL.
  2. URLEncode, decode and parse URLs and query parameters.
  3. Hash / HMACCompute SHA-256, SHA-512 and HMAC of a text or file, and compare with an expected hash.
  4. PasswordsGenerate secure random passwords and check the strength of an existing one, without sending it anywhere.
  5. JWTDecode, verify and create JSON Web Tokens with security warnings.