crypto-patterns

Cryptographic patterns for encryption, hashing, key derivation functions (KDFs), TLS configuration, JWT signing, password storage, and authentication tokens — with deterministic weak-algorithm detection script. Identifies use of deprecated algorithms (MD5, SHA1, DES, ECB mode) and insecure configurations. Use proactively when reviewing code that uses encryption, hashing, or key management, auditing password storage or authentication tokens, checking TLS configuration, reviewing JWT signing algorithms, or any context where cryptographic primitives are chosen or configured. Run the validator for deterministic weak-algorithm detection.