Getting TOTP Tokens Out of Authy

Sun, Oct 11, 2020 5-minute read

I dumped my iPhone for a mostly de-Googled Android – specifically GrapheneOS. I had been using Authy as my TOTP multifactor app. On GrapheneOS, that’s a problem.

Authy requires Google Play Services on Android, so it throws constant error messages on GrapheneOS. (Even with microG.) Adding to the frustration, Authy provides no means to export or download the tokens for use in a different TOTP app (or even just for offline backup). You’re stuck in their walled garden.

Fortunately, I’m not the only one with this headache. Here’s what I found on the interwebs to solve the problem.

End result: All of my TOTP tokens are functioning on my GrapheneOS phone using the Aegis app. Aegis is FOSS and provides export capability, should I ever want to change. As a bonus, I like the Aegis UI much better than Authy!

I didn’t come up with any of this. Just putting some pieces together and consolidating the steps I took in one place. Kudos to all sources – they’re listed at the bottom.

How to Extract the TOTP tokens

My hope was to transfer the tokens to a different application without having to go into each site and re-do the MFA settings.

After some searching online, I found a lengthy GitHub gist with plenty of other people trying to accomplish the same. Borrowing from many of the comments, here’s what worked for me:

Steps:

Download and install Authy desktop application.

I’m on Linux, so that involved using the Snap:

sudo snap install authy --beta

Log into Authy & unlock TOTP codes.

Open Authy app with remote debugging.

/snap/bin/authy --remote-debugging-port=5858

Open web browser to http://localhost:5858

And click the “Authy” link to open Authy. You should see the app rendered in the browser.

Open Dev Tools > Console

Paste the code from the Console Script (below) into the Console

Paste after the > symbol, then ‘Enter’ to run it. You should see huge QR codes displayed in the console.

Use the QR codes to set up new TOTP app.

I’m using Aegis, but at this point it should work for anything. Just scroll to the top of the QR codes list and work your way down. Use the QR scan feature in the new TOTP app to scan each QR code and add the token into the new app. You can easily compare the generated TOTP codes between Authy & the new app to confirm the output is the same.

Optionally: Delete Authy

For the moment, I’m uninstalling the desktop Authy app. I’m not going to delete my codes from Authy yet, but I’ll probably set a reminder to do so in a few months.

Console Script

/*! QRious v4.0.2 | (C) 2017 Alasdair Mercer | GPL v3 License
Based on jsqrencode | (C) 2010 [email protected] | GPL v3 License */
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t,e,i=this._dataBlock,n=this._ecc,s=this._eccBlock,r=0,o=this._calculateMaxLength(),a=this._neccBlock1,h=this._neccBlock2,f=this._stringBuffer;for(t=0;t<i;t++){for(e=0;e<a;e++)n[r++]=f[t+e*i];for(e=0;e<h;e++)n[r++]=f[a*i+t+e*(i+1)]}for(e=0;e<h;e++)n[r++]=f[a*i+t+e*(i+1)];for(t=0;t<s;t++)for(e=0;e<a+h;e++)n[r++]=f[o+t+e*s];this._stringBuffer=n},_insertAlignments:function(){var t,e,i,n=this._version,s=this.width;if(n>1)for(t=u.BLOCK[n],i=s-7;;){for(e=s-7;e>t-3&&(this._addAlignment(e,i),!(e<t));)e-=t;if(i<=t+9)break;i-=t,this._addAlignment(6,i),this._addAlignment(i,6)}},_insertFinders:function(){var 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});


// Based on https://github.com/LinusU/base32-encode/blob/master/index.js
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;
}

// Based on https://github.com/adriancooney/console.image
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;");
}


appManager.getModel().forEach(function(i) {
      let qr_size = 500;

      let secret = (i.markedForDeletion === false ? i.decryptedSeed : hex_to_b32(i.secretSeed));
      let period = (i.digits === 7 ? 10 : 30);
      let 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);

	      let url = (new QRious({value: totp_uri, size: qr_size})).toDataURL();
	      console_image(url, qr_size);
      console.groupEnd();
});

Full Credit To…

These folks came up with everything. I’m just writing this post to put all the pieces in one place for future reference.

Thoughts or comments? Let me know: @quietmike8192