The **ts‑lib‑crypto** package implements the core cryptographic primitives used by the Waves blockchain—key generation, address derivation, hashing (blake2b, keccak, sha256), signing, signature verification, encryption, and messaging utilities. It provides a flexible TypeScript/JavaScript API (both direct functions and a constructor) for developers building Waves‑compatible wallets, dApps, or any third‑party tools that need to work with Waves seeds, keys, and transactions.