@ledgerhq/live-common/lib-es/user.js

Common ground for the Ledger Live apps

import { sha256 } from "./crypto";
const userHashesPerUserId = (userId) => {
    const firmwareSalt = sha256(userId + "|firmwareSalt")
        .toString("hex")
        .slice(0, 6);
    const endpointOverrides100 = sha256(userId + "|endpoint").readUInt16BE(0) % 100;
    return {
        firmwareSalt,
        endpointOverrides100,
    };
};
let cache;
export const getUserHashes = (userId) => {
    if (cache && userId === cache.userId) {
        return cache.value;
    }
    cache = {
        userId,
        value: userHashesPerUserId(userId),
    };
    return cache.value;
};
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