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🛡️ Sentinel: [HIGH] Security enhancements for authentication and cryptography#31

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sentinel-security-enhancements-auth-crypto-4302614848447159760
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🛡️ Sentinel: [HIGH] Security enhancements for authentication and cryptography#31
richkmeli wants to merge 1 commit intomasterfrom
sentinel-security-enhancements-auth-crypto-4302614848447159760

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This submission addresses multiple security issues related to authentication and cryptography. It mitigates timing attacks on password and token verification, ensures consistent charset usage for hashing, optimizes SecureRandom usage, and strengthens session cookie generation. All changes have been verified with existing tests.


PR created automatically by Jules for task 4302614848447159760 started by @richkmeli

…tography

Implemented several security improvements across the codebase:
- Mitigated timing attacks by replacing \`equalsIgnoreCase\` with \`MessageDigest.isEqual\` in PasswordManager, TokenManager, and ServletManager.
- Enforced \`StandardCharsets.UTF_8\` in SHA256 and PasswordManager for consistent cross-platform hashing.
- Refactored RandomStringGenerator to use a single static SecureRandom instance for improved performance and entropy.
- Strengthened session hijacking protection in ServletManager by adding a secret salt (encryptionkey) to the JFRAMEWORKSESSIONID generation.
- Cleaned up test artifacts and updated .gitignore.

Co-authored-by: richkmeli <7313162+richkmeli@users.noreply.github.com>
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👋 Jules, reporting for duty! I'm here to lend a hand with this pull request.

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