Authy 导出密钥到其他 2FA 工具

[pupboss]

有些网站不用标准的 otpauth + 密钥和二维码的实现，比如 SendGrid，他要求用户绑定 Authy，又不支持导出密钥到其他工具，因为绑定过程只需要给一个手机号，自动绑定到同账户的 Authy，所以这才有了下面的方法。不过有几点要注意的就是并不是所有 2FA 工具都支持转换过来的密钥，因为 Authy 有时候是 7 位的随机数字，再就是就算导入到其他软件，Authy 里面也别删，避免它和要验证的网站联动删除，导致账户无法登录。

大概原理就是 Electron 有一个 debug 模式，在 app 运行的时候加入一个 --remote-debugging-port 参数，即可调用 Chrome 的控制台然后做任何想做的事情，而 Authy 桌面端正是用 Electron 写的。具体破解办法可以参考最后的代码，如果想了解更多信息也可以查看原文：https://www.pupboss.com/exporting-authy-passwords-to-other-authenticators/

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t,e,i=this.width;for(e=0;e<i;e++)for(t=0;t<=e;t++)this.buffer[t+i*e]&&this._setMask(t,e)}},{_createArray:function(t){var e,i=[];for(e=0;e<t;e++)i[e]=0;return i},_getMaskBit:function(t,e){var i;return t>e&&(i=t,t=e,e=i),i=e,i+=e*e,i>>=1,i+=t},_modN:function(t){for(;t>=255;)t=((t-=255)>>8)+(255&t);return t},N1:3,N2:3,N3:40,N4:10}),p=v,m=f.extend({draw:function(){this.element.src=this.qrious.toDataURL()},reset:function(){this.element.src=""},resize:function(){var t=this.element;t.width=t.height=this.qrious.size}}),g=h.extend(function(t,e,i,n){this.name=t,this.modifiable=Boolean(e),this.defaultValue=i,this._valueTransformer=n},{transform:function(t){var e=this._valueTransformer;return"function"==typeof e?e(t,this):t}}),k=h.extend(null,{abs:function(t){return null!=t?Math.abs(t):null},hasOwn:function(t,e){return Object.prototype.hasOwnProperty.call(t,e)},noop:function(){},toUpperCase:function(t){return 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e=B.get("element",this),i=y.getService("element"),n=e&&i.isCanvas(e)?e:i.createCanvas(),s=e&&i.isImage(e)?e:i.createImage();this._canvasRenderer=new c(this,n,!0),this._imageRenderer=new m(this,s,s===e),this.update()},{get:function(){return B.getAll(this)},set:function(t){B.setAll(t,this)&&this.update()},toDataURL:function(t){return this.canvas.toDataURL(t||this.mime)},update:function(){var t=new p({level:this.level,value:this.value});this._canvasRenderer.render(t),this._imageRenderer.render(t)}},{use:function(t){y.setService(t.getName(),t)}});Object.defineProperties(O.prototype,{canvas:{get:function(){return this._canvasRenderer.getElement()}},image:{get:function(){return this._imageRenderer.getElement()}}});var A=O,L=h.extend({getName:function(){}}).extend({createCanvas:function(){},createImage:function(){},getName:function(){return"element"},isCanvas:function(t){},isImage:function(t){}}).extend({createCanvas:function(){return 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function hex_to_b32(hex) { let alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ234567"; let bytes = []; for (let i = 0; i < hex.length; i += 2) { bytes.push(parseInt(hex.substr(i, 2), 16)); } let bits = 0; let value = 0; let output = ''; for (let i = 0; i < bytes.length; i++) { value = (value << 8) | bytes[i]; bits += 8; while (bits >= 5) { output += alphabet[(value >>> (bits - 5)) & 31]; bits -= 5; } } if (bits > 0) { output += alphabet[(value << (5 - bits)) & 31]; } return output; }

function console_image(url, size) { console.log("%c+", "font-size: 1px; padding: " + Math.floor(size / 2) + "px " + Math.floor(size / 2) + "px; line-height: " + size + "px; background: url(" + url + "); color: transparent;"); }

(function(console) { console.save = function(data, filename) { if (!data) { console.error('Console.save: No data'); return; } if (typeof data === "object") { data = JSON.stringify(data, undefined, 4) } var blob = new Blob([data], {type: 'text/json'}), e = document.createEvent('MouseEvents'), a = document.createElement('a'); a.download = filename; a.href = window.URL.createObjectURL(blob); a.dataset.downloadurl =  ['text/json', a.download, a.href].join(':'); e.initMouseEvent('click', true, false, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null); a.dispatchEvent(e); } })(console);

console.warn("Here's your Authy tokens:");
var data = appManager.getModel().map(function(i) {
  var secret = (i.markedForDeletion === false ? i.decryptedSeed : hex_to_b32(i.secretSeed));
  var period = (i.digits === 7 ? 10 : 30);
  var totp_uri = `otpauth://totp/${encodeURIComponent(i.name)}?secret=${secret}&digits=${i.digits}&period=${period}`;
  console.group(i.name); console.log('TOTP secret:', secret); console.log('TOTP URI:', totp_uri); var qr_size = 250; var url = (new QRious({value: totp_uri, size: qr_size})).toDataURL(); console_image(url, qr_size); console.groupEnd();
  return {name: i.name, secret: secret, uri: totp_uri};
});

[zpfhbyx]

https://github.com/alexzorin/authy

[SimonOne]

看其他的 2FA 工具支不支持 uri 的 digits=这个参数，很多都默认 digits=4，导不进去

[SimonOne]

@SimonOne #2 补充：或者导进去了，码按 4 位给的，最后也用不了

[JinTianYi456]

https://chrome.google.com/webstore/detail/authy/gaedmjdfmmahhbjefcbgaolhhanlaolb
我用的这个，有导出方式吗？

[pupboss]

@zpfhbyx 这个太狠了，直接模拟登陆

@SimonOne 对，很多 2FA 工具都有类似问题，甚至有的工具不同平台还不一样，比如 1Password iOS 可以，windows 不行，导出来还不能用那就只能认了....

@JinTianYi456 插件应该也是手机号注册登录的，所以你直接下载个桌面端，再用正文里面的办法就可以

[Cavolo]

目前在用的就 Pibterest 和 termius 强制只能使用 Authy 验证，其他网站没碰到不支持标准 totp 的

[Cavolo]

@Cavolo Pinterest，今天怎么…

[pupboss]

@Cavolo 哈哈谁没个手滑的时候，SendGrid 是强制用 Authy，而且不绑定 2FA 不让登录

[chanssl]

github 有个基于 GO 的库，可以导出 token，去年把 token 导出来统一存放到密码管理软件了。
仓库： https://github.com/alexzorin/authy

[chanssl]

噢，一楼已经有人回复了，请忽略。

[pupboss]

@chanssl :D v 站是真藏龙卧虎，什么奇技淫巧都有人知道

[Cavolo]

@pupboss 强制 Authy 是真难受，之前就用 1 楼的项目导出 key 后导入 1password 了。战网也能放到 1password 里，目前就 steam 好像除了 keepass 有解其他都没办法。

[tinkerer]

二维码显示这个功能我目前不需要，所以我直接用下面这段了，重点是 appManager.getModel()

```
function hex_to_b32(hex) {
let alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ234567";
let bytes = [];
for (let i = 0; i < hex.length; i += 2) {
bytes.push(parseInt(hex.substr(i, 2), 16));
}
let bits = 0;
let value = 0;
let output = "";
for (let i = 0; i < bytes.length; i++) {
value = (value << 8) | bytes[i];
bits += 8;
while (bits >= 5) {
output += alphabet[(value >>> (bits - 5)) & 31];
bits -= 5;
}
}
if (bits > 0) {
output += alphabet[(value << (5 - bits)) & 31];
}
return output;
}

console.warn("Here's your Authy tokens:");
var data = appManager.getModel().map(function (i) {
var secret =
i.markedForDeletion === false ? i.decryptedSeed : hex_to_b32(i.secretSeed);
var period = i.digits === 7 ? 10 : 30;
var totp_uri = `otpauth://totp/${encodeURIComponent(
i.name
)}?secret=${secret}&digits=${i.digits}&period=${period}`;
console.group(i.name);
console.log("TOTP secret:", secret);
console.log("TOTP URI:", totp_uri);
console.groupEnd();
return { name: i.name, secret: secret, uri: totp_uri };
});
```

[Greatshu]

安卓手机取得 root 权限可以用 Aegis 导入 Authy 的 token