FinalCrypt Security Whitepaper

1. Introduction

FinalCrypt is a powerful encryption tool designed to provide One-Time Pad (OTP) encryption, ensuring maximum security and privacy for users. This whitepaper provides an in-depth analysis of FinalCrypt’s security mechanisms, implementation details, and recommendations for further strengthening its encryption methods.

2. Core Security Features

2.1 True One-Time Pad (OTP) Encryption

• Uses unique, high-entropy key files to encrypt data.
• Ensures perfect secrecy as long as keys are not reused.
• Meets NIST entropy standards (~8.0 bits/byte), guaranteeing randomness.

2.2 Password-Based Encryption (PBE) Support

• Uses SHA-256 hashing to derive encryption keys from passwords.
• Password-derived bytes are used in a two-stage XOR process.
• Provides additional protection against unauthorized access.

3. Security Analysis & Testing

3.1 OTP Key Randomness & Entropy Validation

• Entropy Test (NIST, Chi-Square Analysis) confirms that FinalCrypt key files contain true randomness.
• Meets ~8.0 bits/byte entropy required for secure OTP encryption.

3.2 Password Security & Brute-Force Resistance

• Brute-force attack simulation confirmed that billions of password attempts per second are possible on specialized hardware.
• Recommendation: Transition from SHA-256 to Argon2, PBKDF2, or bcrypt for better password security.

4. Recommended Security Enhancements

• Implement Argon2, PBKDF2, or bcrypt as an alternative to SHA-256.
• Allow users to select their preferred password hashing algorithm.

5. Conclusion

FinalCrypt provides a highly secure encryption environment, leveraging true OTP encryption and strong cryptographic principles.

6. Security Disclaimer & Licensing

FinalCrypt is provided as open-source software under a Creative Commons License (CC BY-NC-ND 4.0).

7. References

• NIST Special Publication 800-22 (Entropy Testing)
• OWASP Password Security Guidelines

Contact

📧 Email: support@finalcrypt.org

🌍 Website: www.finalcrypt.org