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Asked: 2026-06-01T19:08:18+00:00

So reading this post: How can I calculate the SHA-256 hash of a string

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So reading this post: How can I calculate the SHA-256 hash of a string in Android?

and the docs: http://developer.android.com/reference/java/security/MessageDigest.html

I’m curious; which phones will support SHA-256? In the docs, the line about the ‘NoSuchAlgorithmException’ makes me think that some phones don’t support all algorithms. Before I go implementing this for an app and expecting it to work the same on all phones I want to know if anyone knows anything about this…?

I find it strange that the MessageDigest class doesn’t have some constants to pick the algorithm you want to use.

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1 Answer

  1. Editorial Team

    All Android devices support SHA-256. The NoSuchAlgorithmException indicates that a requested algorithm could not be found and is necessary because the method takes a String argument for the algorithm name. If you passed in “foo-256”, the method’s only recourse is to throw a NoSuchAlgorithmException because, for reasons beyond my understanding, there’s no algorithm called “foo-256”. Assuming you’re passing in a name you’re sure is an algorithm that Android can use, you’ll never see that exception.

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