nostr-dm-magiclink-utils/dist/cjs/nips/nip44.js

A comprehensive Nostr utility library for magic link authentication via direct messages, supporting both ESM and CommonJS. Features NIP-01/04 compliant message encryption, multi-relay support, internationalization (i18n) with RTL support, and TypeScript-f

/**
 * NIP-44: Versioned Encrypted Payloads
 * Implements NIP-44 encryption/decryption using ChaCha20 + HMAC
 * via nostr-crypto-utils/nip44.
 * Spec: https://github.com/nostr-protocol/nips/blob/master/44.md
 */
import { nip44, hexToBytes } from 'nostr-crypto-utils';
/**
 * NIP-44 event kind for gift-wrapped direct messages
 */
export const NIP44_KIND = 44;
/**
 * Encrypt a message using NIP-44 (ChaCha20 + HMAC)
 * @param message - The plaintext message to encrypt
 * @param privateKey - The sender's private key (hex format)
 * @param publicKey - The recipient's public key (hex format)
 * @returns Encrypted payload (base64-encoded)
 */
export async function encryptNip44(message, privateKey, publicKey) {
    const privkeyBytes = hexToBytes(privateKey);
    const conversationKey = nip44.getConversationKey(privkeyBytes, publicKey);
    return nip44.encrypt(message, conversationKey);
}
/**
 * Decrypt a NIP-44 encrypted payload
 * @param payload - The encrypted payload (base64-encoded)
 * @param privateKey - The recipient's private key (hex format)
 * @param publicKey - The sender's public key (hex format)
 * @returns Decrypted plaintext string
 */
export async function decryptNip44(payload, privateKey, publicKey) {
    const privkeyBytes = hexToBytes(privateKey);
    const conversationKey = nip44.getConversationKey(privkeyBytes, publicKey);
    return nip44.decrypt(payload, conversationKey);
}
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