I was thrilled to recently discover that `Steem Keychain` could finally be used to login to both STEEMIT and PalNet!  

I've long believed that one of the greatest obstacles holding back the graphene chain ecosystem has been a safe and secure way to interact with graphene-based websites.  If a site is maliciously compromised, an attacker can potentially snag any private keys accessible within the scope of the site. This would not be possible if your keys are safely stored away in a separate extension such as `Steem Keychain` or `WhaleVault`.

At its core, `WhaleVault` is essentially a cross-chain version of `Steem Keychain`.  While `WhaleVault` doesn't offer all the wallet features of `Steem Keychain`, it does provide a simple set of API calls that easily apply to all graphene chains from BitShares to STEEM to WhaleShares to EOS and *beyond!*

Given their similarities, it occurred to me that any site supporting `Steem Keychain` could easily support `WhaleVault` as well.  So I went ahead and added a bit of "polyfill" code that mimicked the required signing features of `Steem Keychain`, and ***voila!***

![](https://cdn.steemitimages.com/DQmTG96Z142AYwCfqNpZwkCrGgUNvHZWbj9fAgua5NB58qz/image.png)
<center>*"Polyfilled" interfaces supported include requestHandshake, requestSignBuffer, requestBroadcast, requestSignedCall, and requestCustomJson*</center>

Now, don't get me wrong here.  I don't mean to step on anyone's toes.  `Steem Keychain` is terrific, and both work just fine side-by-side.  If `Steem Keychain` is detected, `WhaleVault` will simply stand aside and let it "do its thing".

However, if `Steem Keychain` is NOT available, `WhaleVault` is more than happy to step up to the occasion.  And for those already using `WhaleVault` to seamlessly hop, skip, and jump between multiple sites, dapps, and/or accounts over any number of chains, I expect this will be a most welcome addition and time saver.

<center>*Next Post Spoiler Alert: 
<a href="https://github.com/eosnewyork/eos-transit">EOS dapps can easily integrate ***WhaleVault*** via the Transit API</a>!*</center>

And that's pretty much all there is to it! 

Link: <a href="https://steemit.com/steem/@alexpmorris/whalevault-secure-graphene-cross-chain-key-store-extension">WhaleVault :: Secure Graphene Cross-Chain Key Store Extension 🐳</a>

<center>*As always, I appreciate your UpVote, your follow and all your comments!*</center>