Decrypt AES Content

Decrypt AES content on html

// ==UserScript==
// @name         Decrypt AES Content
// @namespace    https://greasyfork.org/scripts/414578-decrypt-aes-content
// @version      1.3
// @description  Decrypt AES content on html
// @author       Nicolás Boettcher
// @license      GPL-3.0-only; http://www.gnu.org/licenses/gpl-3.0.txt
// @homepageURL  https://greasyfork.org/scripts/414578-decrypt-aes-content
// @supportURL   https://greasyfork.org/es/scripts/414578-decrypt-aes-content/feedback
// @match        https://udp.instructure.com/courses/*
// @require      https://cdnjs.cloudflare.com/ajax/libs/aes-js/3.1.2/index.min.js#sha512=LOqfKFwH2W3jeb0NzXcImFlSyoL7hjsWbZvIeKNOaZw1gFw+yKTE/QUDGLit2KWdd57qd6IgMDkppK2tkwIEhA==
// @icon       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AzAnAJZ+R/vQlQFUA6AiRdBTDVANSPMuZpgJNPDn04A2C9Bcj3B0CvAEr22egI4CUykLxpdoFu+sBvagqLQfDfoQrQH/4SzJ/2CIAiAb0CvGYVAScAXKEA4wDEqgEYFAAFAqX8dxCQ7ALdtAGWAHQeIDyuBMgXAUkSkAznv2L6+5isAlcXANycAcDtu4Bwty5ANoGDi4CYeQsgVgqAAAHFJsBJG5BeLAEI5ijAFnOAWBn/Dvd/EmEEMGwARAGYJODuBoDHCRUgmwFAYlMAlEHQsANk+vU/hEBg4D1BgBMP6KQNSLuR+9q9gHDvLrD1ALFUAIYKoDcAwvpPhPRPEOAIgOPbgHdmC0BTA/arALUCzDoBMDgGJgwAlBLwfr3f1DygkzYgtb4eKJ+sAQHfogTE6mVAsggYGgCdA3i3D1I7AY52A6wBaCRgPwHoPECs7AAw0/qX7L+mAjQIjBHgxgO6aAPsAWhOBOzmAIQSEKstgLT+Y90OUCf/ibL+q6exCtwd5d+BC7Q2gW0jsNdhAEkBxup/Y/1jZfkP9b9TADMBkSsAro4UwJKAdAwA608jrACIpV2AwQRI2ALUGQDZAb7f3dNEwNUVALczKkBtAwzpZxnfRAHiwUUg2h0AjQTICtAZwC4IeUAXJmADD9BoQLjxVSHaLkDaAmRTE0Ah+RoHaCbAmQVwMAvcogTUPkDbAG7xabQ1ACN3gTANAIc7AIPl/37/e/+jMgZy4gI3KQGX/9m7su22dRjoJYkTLpKl4+r/P7W2VoIYUM4JRVG2GPem96XNKcDhYBtMy349/lef4jiAkh+AMQDgyV/Dsj+2v/12sv/9kw0HXCEVFOcJOPXbffwHIM6fTBCAlYBhEsjiJJCP/q35OQasRwHSk4B4DnBcIgIgCABLwEZIAqLs7xj/uS5w//Iw4PJ1eB8SEM0ByJbPON3AkwNgEUieAeQdQOj+cwQoy0woQHoSEMsBHpre8ZOAvQO4Q2C0DZBcfdwFTEqAhAB25u9PHhQgPQmoFqQAfy4DjQ4gJIDZFJCiBNB7BXgOoBy+iAesSQGSk4BoDlDBNMApqgNI7R9CCtB6FQD//k/GJxhwWdX+qUlAtSQHjMMCWwfAAeB4/2n+z+InoOBvgGP/0QO+13WAz42SQL3ATNgALq71NU7/wvtv5fs/Xf/RBa7lyoWAVcoBsRygWaYUPDmAswiEPP68BmzFFCDLADnmv9u/x4Cvwzu9AdWSHDAOCxwcgPcAgiHQMfQzDAAo+wPmv7YYsDIFSB0IVktywAjNAP4ToAEBwG3ggAH4CaCCeMC1ewU+1naAn006gFmqG6BzgFD9F1UAQPTnJgDLwrd+6wEPJ1g5CEweCEYqBzd6EWUAnwMwFRgUBKIeECskAAkAPFzguvoLkPgNiOUASzUEDgighBbwwfjK6//GLYBe/FcQ9G/tf/1Y3wF+NvgE3BZqCacIwGVgXAZo8RwodwHGAAcEeHw+13eApG9AtSgHjMICAQIYpAPpIoDxWwCKAP5fJ/NfL1+H93oDIiGAkhxAN7FIoPYzgKIIAH/+QQVgdIGrywCu3xnYP+kbEMcBKAfU/a9ILBAiABoChDOgQv3HhYDx/t8/Pzk4QMo3IIoD4DSQbj9VHYcDiC0gShwBxvaH5u/vfw4xQOI3oIpOATwwqCIhgJ7rAEFjwDwDQJsAyo7/d+Yv84gBEr8BcRzgiO5+9x8TmwQaVwmWUwDeAuxnABwEuFIGmMsLkPINqCJzQO1Dwd9ZIHUAg3KAMPtrnwgAhuvfmT+XFyDlGxDDAcQ84GPZ399ZoOsAJqQE1bmAYeG/GABMEcA1myxQ6ppwFZ8DajcO0HEdANd/rAABBewB8higAwDXr1wcIF1NuIrJAfX0BOgBAP6eC/QQYDJ/qAm0AAyAvQBXNwOQSxIgcV9QtQAHpGzAROQABg2BWTwE7FcAPPo/mX+0fxZp4NQ0MAoJ1Nz0ugMAHYEFjg5gWAkokAEonmsBIC7wlZEDJKOBEUuB0wtAYoG/tgRICCBOgMoBAG8BGG9/ThQwJQ2MgQANgn49IEA0BzC4B8QNAk0oA4Dvv+MEPzk5QCoaWMWKArUf/kWTCOgdwEAXcMa/DB8CLp7mf3lRwIQ0MAoHQHmgEQFUNA7gVgCDY2BgCBi1gFEGmBUFTEgD40UBBPsjTge1DjCogPAeYCsPAVqhBag3PyEAeXQCpIeASHkALd1//c/UcRGAdQB6MnDiDCAuAZZZUsCWBl42mQmkAKDP/6oYDmAQ/FvcAlTgGSC/A7wz/QQCuQFAokgwYi1Aczd4rBVuIiEAVoLlE0CDEpzvBKgLrMw0BkwZCUYtB2sCAPohJK6i9AOIOuBcBrLgFQB/BnDoAHDPT34OkCQSXKYjqE8JPRREI7WEmVALgN8FVAQqAFcMAN8Z2j9JX0ikruCjU/8Z3oNWQljH4JhaSAD4MsBD/Gdne4A3AQBJICCSA9xIFDDc/igAMDmArATr6QAXwQgA3P88ASANBMQdDu3v/7hQ2tQx/mw8BTwaX9aBZCIAwPYZA0AKCIgmEKGG+//POec4zoV3wcIIAN5/UgXeEAAkgYBI9p82SLonjk5g1d99FZr/HDRAQAEoZPo8s8AJISCeTiD3gDgygZ0DABkYg5uAAAEEQyDECbIFgBQQEM0B6kZ79o9y/+/n6E4AM+Q3XgWAq0AVJZgC3gYAJICAJp4HnCoXBKoIStHdD2dZByATgihkERD+/vtBYMYAkAAC+mvaRHKBfpOsrmJc/1v7hzTSInCgAeNwwBLc/y3lAFJBQPdO17dbHBSom9v9NHUM9L9VTfujYQAIi4CW0xTQXA4oawBYHgL6Yl1T3eI82XV7TlHsX01pgLlNoKAG6LUA4hpg9gCwfFGw/+euqup2qk+5nDuSPH6gNs0sroKTVUBKIQMIECBzAFi+KNhf/Pu/dz4uUN8R6fHj1A9PMME98FgGTBAB4RmAHPsA0kKAvQ1vQHtuzfo+cDd/647dC3BTM6vgYAaIxABXMQOQZR9A6tag6Q2YfKDOwPxV55pHBQAAycAERCBkBLjkDwCLdwf2cUBTVY4PNKc1vKCerB8EAGEKUE4B8x7gDeSAkoWCE+t2z631godNfvM1fn751UYOTeP+DE3tpgGFIeAipAJQyD3A18wEAVYNBSkL8N3g7gfPn1P7aX/98tz/Iu9vrgEABNYAWGEGwB0C2UwZeBUIqKEHrHV6r7RjFpC+/6QCQA9rAZD4/wZCwEQ8sP/Hrm+52b+rBAdbgLkIQCk1gZUbDAGT8sCMPKCpfQaIAwA//8dUAK4hBPg8bOcs/Ag0p6w8oLd/QzeBWqwCJi8CmwGAy4bsvzQPrE4Z8YAxH3mcFQITVIBY+A8B4GdLDrB0SWD0gNMtF/N79pfXANqgEDhsAdhIDpCcZXlgcRz+3etmTRcYa5K1Y3+LUgAFEAEoiQykMwQEEODytTEHSNUasqYLTLe/bo4qnAEcF0GxIUA6BCTYf2MPQIq68HHs4Wwzsrf0l3+qQ9U3CwMAK7cA9ME/VoG5bv4BWP4ROB5NNaX/+8zsrUrjBzdSgXq0luH7b2xwFcycCsyGH4Akj4A2Xi9Xm6Gv09QAnb/Uvf5iBYAtAuvf/sLXAYYc8POwxbP4I6DPVVOv2g9w/9tvR6X8RUBPLQL2poBl/rfNByDFI3BU5/Pxtlo7QMs9jkqFG0CCAUDJW8BQF8BG7Z9AM+Ih+KW6npDE5/QgnkejvB5guAl8tL8dK4BFwQJAmQH+bNUBEihHdZJv2hwfleBfnWr6DfyaPvAcj+4yKLYIiqkA0SGQ0peBe7UIINWYwOABjzHf86/PP74uYPp9/9F0A+BwejVQpgDwzCIouAlIJgDfG7Z/Cu0w9XvDD+ogWvffnKP6X5quf9QK74Hxrj/uAZ+VAZVv/0YjwISx4C89YNCF0sM3fB6G7z7975gPOBJAKpwCKvwMIF8EGCgBbDQCTBgLhj1AOyKQw7fRA7RGLqDGbwICEBVA1/ywBcgGw79ZBPg4bP18r+IBmosBu94wgQB1Ahf8nSXgBAAMlAEMZQBmNoGGHoDvzds/iYSoEoyvXS3A/n9c02MI0JQCaIU2gYI1UHZeBxx0gE0J4PLlCEAyGuBjgOa/c8wfJgFqAoD+/vcftgfSHwOf1wEP6AC/QhPIetkAxwO0Z3AHANzX/zxd/zNmAMp5Avw1YEgFzHDrMx1w2AAaeAA+D69xPo6rMcFpK6h79ekroBEHcK8/8wFPBNTiEmAhIkDBZUBfkwAmJIIEA+jNdyHA9QL/+ivf+L35tR8A8DUQTAQUqQDh/H8JNABehgCmJIKdB2hhG5x2kj96+M4xQLEkAOOAeBeQDfQAyW2gI/6X1xclgCmJIHkFNHn7NX0DQuxfaU0efxcCAltgZ0VguvsP18Bh/H8RAriKB2iEAGeH+gs5wAH+J/trHgHKACDrQNE2MN4D/MoEMGUo0HqAhglAlgE4e2+A0k4CUAgBTFf/8TNAVpwBoQSggDIggg98HF7tfBzXjAXI1RcBgCCA8PjDRUB8E2SB5sBKvAr8LeyfaLWgOvOUr3f9xdzfeP3H5K8GEeBofBUYAqYdIAWbAHBGAMsXzQCv5wEa3X8394dLAIqEAIoXgVrj8yIwQ4ACRwBzm4Bf3/6JFospGQHcu38O5v85ATS8/QeX/2UVWG8I5GVbADLwAJAN1CQIENGfNoJooQQEeoANwX9BB9p//svXrQBlhgEB6jexPzkBSNifAikA+9wQcMEzgMD+P4fXPT+pMYDGgtP9P0tZAPcB4BUAuAUMboIMrgK9Sjqgr5cAWiUh5GLAmWSAxNQfqQBoaPvB+IoXgEMqAL4M+FwG8LXtn9ADQhmAs+gFjvl5D+AM/Sfhv0gAei+QQsBXt/8KGOAkAM5i+t83v2bVX47/4/MfaAHqL/+T4d872D8lBowE8OxmgHkJmGZ/cQVwKP/ODAF5EUA56UAVqAj86gWA9T3g7OT/QvEfKwFpZn2vBciATcC4AQQsAhEI4M/hsHtA1Jyg9rrAn30B/Mvf/cffBAGXwfo5ID8B8DIyUNuIBt2q35k1gSgyBuLmfzTEfxAA0hKgxVvAivKZBMD72D+dB8y0ALIZIDwF1gWBRlgFwwgg6AIGMsDlO9s/XU5QBx4AxfHf94Gp/8NvArUgATgTADgqIG+W/8vBA8ADMCWAA+E/jP+dHhBDHgCkBI8CwPKN8v/rV4fDLYC0AdQbAkM9wKgFaOoBpjMAwioQXv99Q/un84AJAmAJSGl5CEzJbaDo/Qdj4OUz4f972j9Zlxis/yvQAUDp/0wPsBVWgQmL4K6BHvCPw7ueJB5gZA6oZsZApxqQgkPAgRYApAP1Nv2fz5/PFTFgBH/H9vq5FgCLV0H6KtDPCYF/Ht75JEkImLMYARIRAL8FHE0B8RmQQAdQ4WUAr2AI7Ofw3udrHQ+Y+kBl+jdh/xMBQLAFQAaAd6V/qYMBc0bRvwP/Xh3A9CkgMASAhCBnegCJDuQ7tP9mSATUOVQAEuM/H/4tkgFFQ4DS+1/u9G8lImAkCoi6AIwnBEUCAH8TmNgCVMxc/7d//h0ikEJJyuf+lP8rOAhmxBEwI2cAxFXg5f78r5kRULIKDAWAsfxHMQD0gBasB7D077/YArDDv0cELglfAVcHDolA+howogq0FTtAixkVkHv0vyNA6mdAgQoAaAE0IAP4vA40GgFgGeDLbvxVngGjeQsQ7ABgLQCgAGz5JnCWAXS3gOzwn0E0YIgQEJwBNMIEgKQCAzYBCz1A4/X/3E29WlLIAAEQJgKikA7sU5tAuQgEZ387+1+VCxIMgDJAXASOmN+EhgC9PUDg+l/3678yFzSOCogPAbgFwKIRwGJ2Bgi2AO7Xf30QMFqLI0ByFhDUgHgAIJeAyv365wMCRugBMnIDqDAEaIuw9b3s3379MwkHjKQCCjbBWDwGDCqAoAeIZAB28p9PTsDgKWB0/w0k//MtACz//7Ff/4zeAYMjAKACZiEJ9AGgBAEAsf/3XvnLiwwaQQeYd38ICiA0A8gbQAgC7Oif3ztgtFgDxgVAY709UBZUAAq4CnxH/xzfAcPuv1ESAoRVYKEM4BT67dz/T/HAci5gkAqIMnAVrPETgKEEwKQCXO6Pf84hoQmRP2EJhDgDwJuAHvbfH/+s2aBhHWCBGoC8CKzAGeDd/Pm7gGGbgMN7AKQhYJQA2M2/BRcwwSDQiiGgKAIybgK+7D1fm3AB42wCRCoAZA6w6GXgUQWQIsBu/kVc4HshDOBV4FAFAACANwKwg/+WgkLrrgINq8AiGTD2/pffu/mXTA19XBbxAOOvgoU6YD394zKg0/3f4/7tuYAJz4AbGgCEEOCyJ303+RJYhQMAJgQEVcBG8+/Yv1kY+P9GuVUAAAFBSURBVN/eHWwnCANRAN0EQ3uI/f+/baRFUUZOqxwL9N6FC13Oy4QgISV+C0AXHQVe4pdAGfyvbwN50QQEC4C5g6Cu7wAb/H/SBhZcF5b3YAEwugEwOQt8VP+2Mfi3n4EyuQDsZk+CGsrfav07yUC5vwv4cvv/5h+ANln0rSQDecEEnCeA7s4z4B/9h86/rmvC59cFJd4EeAy2AeWk+jtsBDN7QMfFbxuNf72N4KkQlMlbYIfXwH8/AZDN+pvoBOnRFJRgAhi2gRj5mwrB22MpCGeAfuCb8zc5IdQU/C4Gx+629I3abz0Gpxz8OAhflc995ZV+V7NCnRaaVKNQsxCloX5Zf0vpNOQPKr/7NNQ8nB1UHAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADgv/sELqK6tjV1jKgAAAAASUVORK5CYII=
// ==/UserScript==

var questions=3
var key ='12345678901234567890123456789034';
var key_bytes = aesjs.utils.hex.toBytes(key);
var iv, iv_bytes, text, encryptedBytes, aes, decryptedBytes, decryptedText

var ivid = "iv-P";
var AESid= "AES-P";

for (var id = 1; id <= questions; id++) {
    iv = document.getElementsByClassName(ivid.concat(id))[0].id;
    iv_bytes = aesjs.utils.hex.toBytes(iv);
    text = document.getElementsByClassName(AESid.concat(id))[0].id;
    encryptedBytes = aesjs.utils.hex.toBytes(text);
    aes = new aesjs.ModeOfOperation.ofb(key_bytes, iv_bytes);
    decryptedBytes = aes.decrypt(encryptedBytes);
    decryptedText = aesjs.utils.utf8.fromBytes(decryptedBytes);
    document.getElementById(text).innerHTML=decryptedText;
}