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,n,s=this.buffer,r=this.width;for(t=0;t<3;t++){for(e=0,n=0,1===t&&(e=r-7),2===t&&(n=r-7),s[n+3+r*(e+3)]=1,i=0;i<6;i++)s[n+i+r*e]=1,s[n+r*(e+i+1)]=1,s[n+6+r*(e+i)]=1,s[n+i+1+r*(e+6)]=1;for(i=1;i<5;i++)this._setMask(n+i,e+1),this._setMask(n+1,e+i+1),this._setMask(n+5,e+i),this._setMask(n+i+1,e+5);for(i=2;i<4;i++)s[n+i+r*(e+2)]=1,s[n+2+r*(e+i+1)]=1,s[n+4+r*(e+i)]=1,s[n+i+1+r*(e+4)]=1}},_insertTimingGap:function(){var t,e,i=this.width;for(e=0;e<7;e++)this._setMask(7,e),this._setMask(i-8,e),this._setMask(7,e+i-7);for(t=0;t<8;t++)this._setMask(t,7),this._setMask(t+i-8,7),this._setMask(t,i-8)},_insertTimingRowAndColumn:function(){var t,e=this.buffer,i=this.width;for(t=0;t<i-14;t++)1&t?(this._setMask(8+t,6),this._setMask(6,8+t)):(e[8+t+6*i]=1,e[6+i*(8+t)]=1)},_insertVersion:function(){var t,e,i,n,s=this.buffer,r=this._version,o=this.width;if(r>6)for(t=d.BLOCK[r-7],e=17,i=0;i<6;i++)for(n=0;n<3;n++,e--)1&(e>11?r>>e-12:t>>e)?(s[5-i+o*(2-n+o-11)]=1,s[2-n+o-11+o*(5-i)]=1):(this._setMask(5-i,2-n+o-11),this._setMask(2-n+o-11,5-i))},_isMasked:function(t,e){var i=v._getMaskBit(t,e);return 1===this._mask[i]},_pack:function(){var t,e,i,n=1,s=1,r=this.width,o=r-1,a=r-1,h=(this._dataBlock+this._eccBlock)*(this._neccBlock1+this._neccBlock2)+this._neccBlock2;for(e=0;e<h;e++)for(t=this._stringBuffer[e],i=0;i<8;i++,t<<=1){128&t&&(this.buffer[o+r*a]=1);do{s?o--:(o++,n?0!==a?a--:(n=!n,6===(o-=2)&&(o--,a=9)):a!==r-1?a++:(n=!n,6===(o-=2)&&(o--,a-=8))),s=!s}while(this._isMasked(o,a))}},_reverseMask:function(){var t,e,i=this.width;for(t=0;t<9;t++)this._setMask(t,8);for(t=0;t<8;t++)this._setMask(t+i-8,8),this._setMask(8,t);for(e=0;e<7;e++)this._setMask(8,e+i-7)},_setMask:function(t,e){var i=v._getMaskBit(t,e);this._mask[i]=1},_syncMask:function(){var 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 null!=t?t.toUpperCase():null}}),w=h.extend(function(t){this.options={},t.forEach(function(t){this.options[t.name]=t},this)},{exists:function(t){return null!=this.options[t]},get:function(t,e){return w._get(this.options[t],e)},getAll:function(t){var e,i=this.options,n={};for(e in i)k.hasOwn(i,e)&&(n[e]=w._get(i[e],t));return n},init:function(t,e,i){"function"!=typeof i&&(i=k.noop);var n,s;for(n in this.options)k.hasOwn(this.options,n)&&(s=this.options[n],w._set(s,s.defaultValue,e),w._createAccessor(s,e,i));this._setAll(t,e,!0)},set:function(t,e,i){return this._set(t,e,i)},setAll:function(t,e){return this._setAll(t,e)},_set:function(t,e,i,n){var s=this.options[t];if(!s)throw new Error("Invalid option: "+t);if(!s.modifiable&&!n)throw new Error("Option cannot be modified: "+t);return w._set(s,e,i)},_setAll:function(t,e,i){if(!t)return!1;var n,s=!1;for(n in t)k.hasOwn(t,n)&&this._set(n,t[n],e,i)&&(s=!0);return s}},{_createAccessor:function(t,e,i){var n={get:function(){return w._get(t,e)}};t.modifiable&&(n.set=function(n){w._set(t,n,e)&&i(n,t)}),Object.defineProperty(e,t.name,n)},_get:function(t,e){return e["_"+t.name]},_set:function(t,e,i){var n="_"+t.name,s=i[n],r=t.transform(null!=e?e:t.defaultValue);return i[n]=r,r!==s}}),M=w,b=h.extend(function(){this._services={}},{getService:function(t){var e=this._services[t];if(!e)throw new Error("Service is not being managed with name: "+t);return e},setService:function(t,e){if(this._services[t])throw new Error("Service is already managed with name: "+t);e&&(this._services[t]=e)}}),B=new M([new g("background",!0,"white"),new g("backgroundAlpha",!0,1,k.abs),new g("element"),new g("foreground",!0,"black"),new g("foregroundAlpha",!0,1,k.abs),new g("level",!0,"L",k.toUpperCase),new g("mime",!0,"image/png"),new g("padding",!0,null,k.abs),new g("size",!0,100,k.abs),new g("value",!0,"")]),y=new b,O=h.extend(function(t){B.init(t,this,this.update.bind(this));var 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 document.createElement("canvas")},createImage:function(){return document.createElement("img")},isCanvas:function(t){return t instanceof HTMLCanvasElement},isImage:function(t){return t instanceof HTMLImageElement}});return A.use(new L),A});
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};
});
这是一个专为移动设备优化的页面(即为了让你能够在 Google 搜索结果里秒开这个页面),如果你希望参与 V2EX 社区的讨论,你可以继续到 V2EX 上打开本讨论主题的完整版本。
V2EX 是创意工作者们的社区,是一个分享自己正在做的有趣事物、交流想法,可以遇见新朋友甚至新机会的地方。
V2EX is a community of developers, designers and creative people.