Nostr Crypto Guide

Overview

Implement Nostr's cryptographic primitives correctly. This skill covers the five crypto-related NIPs that agents consistently get wrong: key derivation (NIP-06), payload encryption (NIP-44), gift wrapping for metadata privacy (NIP-59), private key encryption for backup (NIP-49), and remote signing (NIP-46).

When to Use

• The task centers on Nostr cryptographic operations such as NIP-06, NIP-44, NIP-46, NIP-49, or NIP-59.
• The user needs help with key derivation, encryption/decryption, gift wrap, private-key protection, or remote-signing crypto flows.
• The problem is cryptographic correctness, interoperability, or migration away from deprecated NIPs.
• The request is about how secrets or ciphertext are produced and consumed inside a Nostr app.

Do NOT use when: