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…revent timing attacks This change implements several security enhancements to the JFramework crypto and util modules: 1. Prevents timing attacks by using MessageDigest.isEqual for password and token verification. 2. Ensures encoding consistency by explicitly using StandardCharsets.UTF_8 for string-to-byte conversions in SHA256, PasswordManager, and TokenManager. 3. Improves entropy and performance in RandomStringGenerator by using a single static SecureRandom instance and better range generation. 4. Updates .gitignore to prevent accidental commitment of temporary test artifacts. Co-authored-by: richkmeli <7313162+richkmeli@users.noreply.github.com>
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Improved security by implementing constant-time comparisons, deterministic encoding, and better random number generation. Cleaned up test artifacts.
PR created automatically by Jules for task 14638834742747599487 started by @richkmeli