问题
I'd like to be able to create unique tokens* for users based on a hashed string. I know I could, for example, use a md5() library but as the purpose is not cryptographic I was wondering if there was anything I could use "out of the box." Are there any one-way hashing functions available in native JavaScript?
*I realize these won't be strictly unique. I'm ok with a small chance of hashing collision.
回答1:
not that I'm aware of.
however, you could always use a JavaScript implementation of MD5
http://pajhome.org.uk/crypt/md5/
回答2:
JavaScript does not have native hashing, but there are many libraries.
I recommend crypto-js: https://code.google.com/p/crypto-js/
For example, to use SHA1, you simply:
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/crypto-js/3.1.2/rollups/sha1.js"></script>
<script>
var hash = CryptoJS.SHA1("Message");
</script>
回答3:
Nothing is available in native JavaScript. You could use something like Murmurhash. There's a JavaScript implementation here: https://github.com/garycourt/murmurhash-js. I haven't used it though so can't vouch for it.
Update: now there are multiple Murmurhash3 implementations available in JavaScript. However, many of them have problems encoding strings to bytes and can produce different results compared to the reference C++ implementation. You can read an analysis on this here, the murmurhash3js-revisited library implements all three variants of the function and conforms to the reference.
回答4:
Over the horizon, this may be possible with the currently experimental Web Crypto API
https://developer.mozilla.org/en-US/docs/Web/API/Web_Crypto_API
https://developer.mozilla.org/en-US/docs/Web/API/SubtleCrypto
Granted, at the time of this writing it is unrealistic to use in a production environment and will likely be a moving target. However, come 5 years who knows?
来源：https://stackoverflow.com/questions/5111164/are-there-any-one-way-hashing-functions-available-in-native-javascript