原生 JavaScript 中是否有可用的单向哈希函数？
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Are there any one-way hashing functions available in native JavaScript?
提问by buley
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?
我希望能够基于散列字符串为用户创建唯一的令牌*。例如，我知道我可以使用 md5() 库，但由于目的不是加密，我想知道是否有任何我可以“开箱即用”的东西。原生 JavaScript 中是否有可用的单向哈希函数？
*I realize these won't be strictly unique. I'm ok with a small chance of hashing collision.
*我意识到这些不会是严格唯一的。我没问题，散列冲突的可能性很小。
采纳答案by Kae Verens
not that I'm aware of.
不是我知道的。
however, you could always use a JavaScript implementation of MD5
但是，您始终可以使用 MD5 的 JavaScript 实现
回答by Tero Niemi
JavaScript does not have native hashing, but there are many libraries.
JavaScript 没有原生散列，但有很多库。
I recommend crypto-js: https://code.google.com/p/crypto-js/
我推荐加密js：https: //code.google.com/p/crypto-js/
For example, to use SHA1, you simply:
例如，要使用 SHA1，您只需：
<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by Tim Down
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.
本机 JavaScript 中没有可用的内容。你可以使用像Murmurhash这样的东西。这里有一个 JavaScript 实现：https: //github.com/garycourt/murmurhash-js。不过我没用过所以不能保证。
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-revisitedlibrary implements all three variants of the function and conforms to the reference.
更新：现在 JavaScript 中有多个 Murmurhash3 实现可用。但是，与参考 C++ 实现相比，它们中的许多都存在将字符串编码为字节的问题，并且会产生不同的结果。您可以在此处阅读对此的分析，murmurhash3js-revisited库实现了该函数的所有三个变体并符合参考。
回答by Adam Grant
Over the horizon, this may be possible with the currently experimental Web Crypto API
在未来，这可能通过当前实验性的 Web Crypto API 实现
https://developer.mozilla.org/en-US/docs/Web/API/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
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?
诚然，在撰写本文时，在生产环境中使用它是不切实际的，并且可能是一个移动目标。然而，五年后谁知道呢？
