Created
September 2, 2017 01:55
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patmigliaccio.com/client-side-security 7/27/17
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function requestGeneratedSVG(){ | |
return xhr('/assets/css/svg/generate') | |
.then(response => { | |
let content = parseSVGResponse(response.data); | |
// Decoded sensitive data would be handled here. | |
return JSON.parse(atob(content)); | |
}); | |
} | |
// Note: Unnecessary complexity added to logic to increase level of ambiguity. | |
function parseSVGResponse(data){ | |
// Puts the last 64 chars in the front. | |
let dataAry = data.split(''); | |
for (let i = 0; i < 64; i++) { | |
let lastChars = dataAry.pop().trim(); | |
dataAry.unshift(lastChars); | |
} | |
// Reverses the order of the string. | |
let dataOut = []; | |
dataAry.forEach(x => dataOut.unshift(x)) | |
return dataOut.join(''); | |
} |
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