accounts/dist/core/keystores/p256.js

Tempo Accounts SDK

import { P256, PublicKey } from 'ox';
import { Account as TempoAccount } from 'viem/tempo';
/**
 * Pure-JS P-256 keystore. The private key is held as hex in the handle and
 * signing runs in JavaScript — at-rest protection is the host app's storage
 * adapter, and the key is readable by anything with JS execution. Prefer
 * `webCryptoP256` (or a hardware keystore) where a WebCrypto
 * implementation is available; this exists chiefly as an adapter default
 * for environments without one.
 */
export function p256() {
    return {
        async createKey() {
            const privateKey = P256.randomPrivateKey();
            return {
                handle: { kind: 'p256', privateKey },
                publicKey: PublicKey.toHex(P256.getPublicKey({ privateKey })),
            };
        },
        toAccount(record, context) {
            const handle = record.handle;
            if (handle?.kind !== 'p256' || !handle.privateKey)
                throw new Error('Unrecognized `p256` keystore handle.');
            return TempoAccount.fromP256(handle.privateKey, {
                access: context.access,
                keyAuthorizationManager: context.keyAuthorizationManager,
            });
        },
    };
}
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