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Implement randomBytes for emscripten - #99
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Description
Implements
randomBytesforemscripten. According to the rust crategetrandomand the PR linked on the same page emscripten-core/emscripten#12240emscriptenwrapsgetRandomDevice(browser version of obtaining randomness) within thegetentropyfunction.Changes
randomBytesforemscriptenrandomBytesofopenbsdwithemscripten. Before this PR,randomByteswithin theopenbsdsegment did not care for the maximum chunk size allowed bygetentropy(1, 2). This would resulted in using/dev/urandomfor randomness above 256 bytes.urandomReadto accomodate foremscriptensince users might not defineposixflag withemscripten.