I need a mathematician and cryptography expert with extensive experience in encryption, decryption, and hashing.

I’m shaping a security-focused application and need a seasoned mathematician-cryptographer to guide every step of its protection layer. The work ranges from selecting or fine-tuning modern ciphers to designing reliable hash strategies and validating decryption workflows against active-attack scenarios. I already have baseline code in Python and a small C++ module; what’s missing is the deep theory-driven insight that keeps implementation mistakes from creeping in.

Here’s what I’d like from you:
• A concise threat-model review of my current design and recommendations to close any gaps.
• A formal specification (and, if practical, reference code) for the chosen encryption scheme, complete with key-management flow and secure parameter choices.
• A collision-resistant hashing approach, documented with proofs or citations that back its strength.
• A short report explaining your reasoning so I can satisfy upcoming security audits.

I’m available daily for live walk-throughs and can supply sample data, existing source files, and test vectors the moment we start. If you thrive on rigorous mathematics and modern cryptography practices—whether that’s AES-GCM, Curve25519, SHA-3, or something more exotic—let’s secure this project together.