Is there a method to calculate the hash of large files in JavaScript without needing to load the entire file in a FileReader? Specifically, I'm interested in finding out if it's possible to stream a file and calculate its sha1 hash in JavaScript.
I have been examining sha.js, but I am uncertain about how this can be achieved on the client-side using JavaScript.
It appears that the solution can be found in this post: Read file stream using javascript in web browser
The File API includes a slice method that allows for reading a file in segments.
To learn more about this process, visit: https://developer.mozilla.org/en-US/docs/Web/API/Blob/slice
Additional information on implementing this can be found here:
https://www.html5rocks.com/en/tutorials/file/dndfiles/
You can also explore Google's implementation of SHA1 at:
https://github.com/google/closure-library/blob/master/closure/goog/crypt/sha1.js
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