accounts/dist/core/adapters/secp256k1.js

Tempo Accounts SDK

import { Account as TempoAccount, Secp256k1 } from 'viem/tempo';
import * as Adapter from '../Adapter.js';
import { local } from './local.js';
/**
 * Creates a secp256k1 adapter that signs in-process with a `secp256k1` private key.
 *
 * If `privateKey` is provided, the adapter pins that key as the signer (useful
 * for server-side use, where the key is supplied by the host environment).
 *
 * If `privateKey` is omitted, the adapter generates a random key on first
 * connect and persists it via the provider's storage adapter (e.g.
 * `localStorage`, cookies). Storing keys in browser storage in plaintext is
 * dangerous — only use the unpinned form for development, testing, or when the
 * threat model allows it.
 *
 * Wraps the {@link local} adapter.
 *
 * @example
 * ```ts
 * import { secp256k1, Provider } from 'accounts'
 *
 * // Server-side (pinned key):
 * const provider = Provider.create({
 *   adapter: secp256k1({ privateKey: process.env.PRIVATE_KEY }),
 * })
 *
 * // Client-side (random key, persisted to storage):
 * const provider = Provider.create({
 *   adapter: secp256k1(),
 * })
 * ```
 */
export function secp256k1(options = {}) {
    const { icon, name, privateKey, rdns } = options;
    const fixed = privateKey
        ? {
            address: TempoAccount.fromSecp256k1(privateKey).address,
            keyType: 'secp256k1',
            privateKey,
        }
        : undefined;
    return Adapter.define({ icon, name, rdns }, (config) => {
        const { store } = config;
        return local({
            async createAccount() {
                if (fixed)
                    return { accounts: [fixed] };
                const privateKey = Secp256k1.randomPrivateKey();
                const generated = TempoAccount.fromSecp256k1(privateKey);
                return {
                    accounts: [{ address: generated.address, keyType: 'secp256k1', privateKey }],
                };
            },
            async loadAccounts() {
                if (fixed)
                    return { accounts: [fixed] };
                return { accounts: [...store.getState().accounts] };
            },
        })(config);
    });
}
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