Re: Hashing on client

I was surprised that GWT supports MessageDigest as its not part of the JRE Emulation documentation (https://developers.google.com/web-toolkit/doc/latest/RefJreEmulation) . Seems like its slightly out of date.

Nevertheless when you take a look at the source code you can see that GWT only supports MD5 for MessageDigest: https://code.google.com/p/google-web-toolkit/source/browse/releases/2.5/user/super/com/google/gwt/emul/java/security/MessageDigest.java

Note that the linked implementation is the super source version that is used by the GWT compiler when it generates the JS code for your app. During DevMode you are using the standard Java MessageDigest which also supports SHA. Thats why you see the difference.

-- J.

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