Re: http://www.w3.org/TR/WebCryptoAPI/

One, that's a bit of an outdated version of the spec. Please see the latest
Editor's Draft -
https://dvcs.w3.org/hg/webcrypto-api/raw-file/tip/spec/Overview.html

Two, the API uses ArrayBufferView, so you can use any API that returns
ArrayBuffers - including the File API - http://www.w3.org/TR/FileAPI/


On Mon, Jan 13, 2014 at 2:52 PM, Титов Николай <titovns@kamchatka.gov.ru>wrote:

> Hi2all !
>
>
>
> I have read the “working draft” about CryptoAPI for browsers at
> http://www.w3.org/TR/WebCryptoAPI/
>
>
>
> Can you tell me: how I can encrypt file data (blob data)?
>
> In examples, signed & encrypted only simple text data.
>
> But most public web-applications need encrypt file data too!
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>
>
> For example:
>
> <!-- file input element of some form -->
>
> <input type=file id=myfile />
>
>
>
> <script>
>
> …
>
> // after user selected file in form, we can do:
>
>     var f = document.getElementById(‘myfile’);
>
>     var signdata = window.crypto.subtle.sign(algorithmSign,
> key.privateKey).process(f.getBlob()).finish();
>
> </script>
>
>
>
>
>
> But javascript has not interface with read file data.
>
>
>
>
>
> Best regards, chris196765
>
>
>