matrixbithash/jssrc/index.js

Verify Matrixbit Hashing

var wasm = require('./mxbit.js');

var digest = function (ev) {

        var inputBuffer = wasm._malloc(ev.length + 1);
        var outputSizePtr = wasm._malloc(4); // eslint-disable-line
        var outputBufferPtr;
        var outputSize;
        var outputContent;
        var i;

        wasm.writeArrayToMemory(ev, inputBuffer);

        outputBufferPtr = wasm.convert(
            inputBuffer, ev.length, outputSizePtr
        );

        outputSize = wasm.getValue(outputSizePtr, 'i32');
        outputContent = Buffer.alloc(outputSize);

        for (i = 0; i < outputSize; i++) {
            outputContent[i] = wasm.getValue(outputBufferPtr + i, 'i8');
        }

        wasm.freePtrs(outputBufferPtr, outputSizePtr);

        var data = new Buffer(outputContent, 'hex');
        return data;

};

module.exports = {
    digest: digest,
};