Goal: collect a large list of public pages (no login, no paywalls) on a daily schedule (and near-real-time when it makes sense) without tripping bot protections. Stealth first; I’ll also add a short path to become a recognized/allow-listed crawler if the business later wants it.
I would keep three constraints in front of me at all times:
Goal: Given (a) Amazon credentials and (b) a product URL, return the real-time price — while staying fully legal and avoiding “suspicious login” alerts.
Below is a detailed design. I’ll first prefer no-login paths (legal + easy) and then, only if the business insists on account context, I’ll show a session-safe, device-sticky approach that minimizes alerts.
| import 'dart:isolate'; | |
| import 'dart:async'; | |
| import 'package:flutter/material.dart'; | |
| import 'package:flutter/scheduler.dart'; | |
| import 'package:webcrypto/webcrypto.dart'; | |
| void main() { | |
| runApp(const MyApp()); | |
| } |
| const x25519_key = await crypto.subtle.generateKey( | |
| { name: "X25519" }, | |
| true, // Extractable | |
| ["deriveKey", "deriveBits"] | |
| ); | |
| // Export the keys | |
| const privateKeyJwk = await crypto.subtle.exportKey("pkcs8", x25519_key.privateKey); | |
| const publicKeyJwk = await crypto.subtle.exportKey("spki", x25519_key.publicKey); |
| import 'dart:convert'; | |
| import 'dart:typed_data'; | |
| import 'package:pem/pem.dart'; | |
| import 'package:test/test.dart'; | |
| import 'package:webcrypto/webcrypto.dart'; | |
| void main() { | |
| group('RsaOaepPrivateKey Tests', () { | |
| final modulusLength = 2048; | |
| final publicExponent = BigInt.from(65537); |
| package main | |
| import ( | |
| "crypto/rand" | |
| "crypto/sha256" | |
| "fmt" | |
| "github.com/cloudflare/circl/ecc/bls12381" | |
| ) | |
| type KDF struct { |
| PS C:\Users\Hamdaan\Desktop\downloads\webcrypto.dart> flutter test --coverage | |
| 00:17 +1425: All tests passed! |
| import 'package:webcrypto/webcrypto.dart'; | |
| import 'dart:convert'; | |
| Future<void> main() async { | |
| // Generate a new key using SHA-256 and an optional length parameter. | |
| final key = await HmacSecretKey.generateKey(Hash.sha256, length: 256); | |
| // Sign the message. | |
| final signature = await key.signBytes(utf8.encode('Hello World!')); | |
| PS E:\kanidm> cargo test | |
| warning: unused variable: `path` | |
| --> libs\file_permissions\src\windows.rs:21:22 | |
| | | |
| 21 | pub fn diagnose_path(path: &Path) -> Diagnosis { | |
| | ^^^^ help: if this is intentional, prefix it with an underscore: `_path` | |
| | | |
| = note: `#[warn(unused_variables)]` on by default | |
| warning: `kanidm_lib_file_permissions` (lib) generated 1 warning (run `cargo fix --lib -p kanidm_lib_file_permissions` to apply 1 suggestion) |
| root@LAPTOP-B88S065R:/mnt/c/Users/Hamdaan/Desktop/kanidm# cargo test | |
| Updating git repository `https://github.com/kanidm/webauthn-rs.git` | |
| Updating crates.io index | |
| Updating git repository `https://github.com/dnaeon/rust-sshkeys.git` | |
| Downloaded pin-project v1.1.4 | |
| Downloaded password-hash v0.5.0 | |
| Downloaded prokio v0.1.0 | |
| Downloaded overload v0.1.1 | |
| Downloaded asn1-rs-derive v0.1.0 | |
| Downloaded async-stream-impl v0.3.5 |