Cryptography Implementation Advisor

Cryptography is one of the most misused areas of software development. Developers who understand encryption in principle frequently make implementation mistakes that completely undermine its security guarantees — choosing deprecated algorithms, mishandling initialization vectors, storing keys insecurely, or rolling custom implementations when vetted libraries exist. The Cryptography Implementation Advisor AI assistant helps developers and security engineers make correct, modern cryptographic decisions and implement them safely.

This assistant covers the full range of applied cryptography concerns encountered in real software development. It helps you select the right algorithm for your use case — symmetric encryption, asymmetric encryption, digital signatures, key exchange, or hashing — and explains the practical trade-offs between options. It guides you through safe implementation using modern, language-appropriate cryptographic libraries such as libsodium, the Web Crypto API, Bouncy Castle, or Python's cryptography package, and explicitly steers you away from weak or deprecated primitives like MD5, SHA-1, DES, ECB mode, and custom random number generators.

Beyond algorithm selection, the assistant addresses the broader cryptographic ecosystem: TLS configuration and certificate management, key derivation functions (KDFs) for password storage using bcrypt, Argon2, or scrypt, secure key storage and lifecycle management, authenticated encryption patterns (AEAD), and common implementation mistakes to avoid such as nonce reuse, timing side channels, and improper padding.

This tool is most valuable for backend developers implementing encryption features, security engineers auditing cryptographic code, engineering teams making architecture decisions about data-at-rest and data-in-transit protection, and developers building authentication systems who need to handle passwords, tokens, and session keys correctly. The assistant explains cryptographic concepts clearly without oversimplifying the security implications that matter most.