Fast and light JavaScript SHA-256 secure hash implementation [closed]

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I'm looking for a hash implementation that is;

secure (practically impossible to invert)
fast (few ms)
light (few KB)
runs in the browser

Ideally a SHA-256 implementation, since it is widely used and therefore widely tested against.

Google SHA-256 javascript brings up a number of the popular ones. — Xotic750
– Xotic750, Commented Jul 4, 2015 at 9:21
how do you define "fast" vs not fast, or "compact" vs not compact? — Jaromanda X
– Jaromanda X, Commented Jul 4, 2015 at 9:21
@Xotic750 this is actually more of a wiki answer, see my answer — brillout
– brillout, Commented Jul 4, 2015 at 9:27
@JaromandaX fast: Computationally efficient, e.g. an implementation returning the secure hash within 5ms would be fast. Compact: few KB, e.g. an implementation of 10KB size would be compact — brillout
– brillout, Commented Jul 4, 2015 at 9:29
Questions asking us to recommend or find a book, tool, software library, tutorial or other off-site resource are off-topic for Stack Overflow as they tend to attract opinionated answers and spam. Instead, describe the problem and what has been done so far to solve it. — Xotic750
– Xotic750, Commented Jul 4, 2015 at 9:30

brillout · Accepted Answer · 2015-07-22 12:10:14Z

1

Doing some tests suggests that forge is the fastest SHA-256 JavaScript implementation.

It is 284KB big but extracting the SHA-256 related code reduces the size to 4.5 KB, see https://github.com/brillout/forge-sha256.

edited Jul 22, 2015 at 12:10

answered Jul 4, 2015 at 9:26

brillout

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3 Comments

Xotic750 Over a year ago

Doing some tests suggests that forge is the fastest SHA-256 JavaScript implementation. What tests did you independently perform?

GottZ Over a year ago

@Xotic750: github.com/brillout/test-secure-hash-algos/blob/master/main.js

jamesjansson Over a year ago

2018 answer: Bichlmeier SHA256 seems to be 2X as fast as forge

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