AES-GCM decrypt a gogo
Bel LaPointe
parent
887e67bc7d
commit
26c5ec2c77
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@ -2,111 +2,57 @@
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<header>
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<header>
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<meta charset="UTF-8">
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<meta charset="UTF-8">
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<script>
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<script>
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function who(form) {
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function b64tobuff(b64) {
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var items = {}
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binary = window.atob(b64)
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for (var i=0; i<form.length; i++) {
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return stobuff(binary)
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if (form[i].name)
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items[form[i].name] = form[i].value
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}
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}
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var params = "?"
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function stobuff(s) {
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for(var k in items) {
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bytes = new Uint8Array(s.length)
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params += k + "=" + items[k] + "&"
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for (var i = 0; i < s.length; i++) {
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bytes[i] = s.charCodeAt(i)
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}
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}
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params = params.substr(0, params.length-1)
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return bytes.buffer
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http("GET", "http://localhost:18114/who" + params, function(body, status) {
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console.log(status, "body=",body)
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}, null)
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return false;
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}
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}
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function http(method, remote, callback, body) {
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key = "123".repeat(32).substr(0, 32)
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var xmlhttp = new XMLHttpRequest();
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console.log("key:", key)
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xmlhttp.onreadystatechange = function() {
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ciphertext = atob("SOY05yF/9iv3YG71sKkQPVaEwO53PCX8qZhDHS9JUohBgVl5Qr9/GTKK/TJ6OozhHN7QBIGmHNzQxTRRSLs4Lw==")
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if (xmlhttp.readyState == XMLHttpRequest.DONE) {
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console.log("ciphertext:", ciphertext)
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console.log("KK", xmlhttp.readyState, xmlhttp.responseText, xmlhttp.status)
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data = ciphertext.substr(12, ciphertext.length)
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callback(xmlhttp.responseText, xmlhttp.status)
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nonce = ciphertext.substr(0, 12)
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}
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console.log("data:", data)
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};
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console.log("nonce:", nonce)
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xmlhttp.open(method, remote, true);
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if (typeof body == "undefined") {
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body = null
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}
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xmlhttp.send(body);
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}
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function callback(responseBody, responseStatus) {
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}
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function draw(one) {
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key = crypto.subtle.importKey(
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var id = one.id
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"raw",
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var meta = one.meta
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stobuff(key),
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var know = one.know
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"AES-GCM",
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var html = "<div>\n"
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false,
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html += '<h2>' + id + '</h2>\n'
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["decrypt"],
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html += '<ul>\n'
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).then(function(cryptoKey) {
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for(var k in meta) {
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console.log("cryptoKey:", cryptoKey)
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html += '<li>'
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window.crypto.subtle.decrypt(
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html += k + ': '
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{
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var lines = meta[k].split("\n")
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name: "AES-GCM",
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if (lines.length == 1) {
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iv: stobuff(nonce),
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html += lines[0]
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},
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} else {
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cryptoKey,
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html += "<ul>"
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stobuff(data),
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lines.forEach(function(e) {
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).then(function(decrypted) {
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html += "<li>" + e + "</li>"
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console.log(decrypted)
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console.log(String.fromCharCode.apply(null, new Uint8Array(decrypted)))
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})
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})
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html += "</ul>"
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.catch(function(eb){
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}
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console.log("eb:",eb.code, eb.message, eb.name)
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html += '</li>\n'
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})
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}
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})
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html += '</ul>\n'
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.catch(function(ea){console.log("ea:",ea.code, ea.message, ea.name)})
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html += '<h3>Knows</h3>\n'
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html += '<ul>\n'
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for(var k of know) {
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html += '<li>\n'
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var action = '\'who([{name: "id", value: "' + k.id + '"}])\''
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html += "<a href='#' onclick=" + action + ">"
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html += k.id + ", <i>" + k.relation + " </i>"
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html += "</a>"
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html += '</li>\n'
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}
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html += '</ul>\n'
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html += "</div>\n"
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document.getElementById("display").innerHTML += html
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}
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function draw_clear() {
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document.getElementById("display").innerHTML = ""
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}
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</script>
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</script>
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</header>
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</header>
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<body>
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<body>
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<h1>Goodbye World</h1>
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<form onsubmit="who(this); return false;">
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<input name="id" type="text"/>
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<input type="submit"/>
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</form>
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<div id="display">
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<div id="display">
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</div>
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</div>
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</body>
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</body>
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<footer>
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<footer>
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<script>
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draw({
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id: "id",
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meta: {
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"20200710": "hello",
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"20200711": "world\n!",
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},
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know: [
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{
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id: "id0",
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relation: ":)",
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},
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{
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id: "id1",
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relation: ":(",
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},
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]
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})
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</script>
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</footer>
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</footer>
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</html>
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</html>
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@ -35,6 +35,7 @@ func aesDec(key, payload string) (string, error) {
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if err != nil {
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if err != nil {
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return "", err
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return "", err
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}
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}
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log.Println(gcm.NonceSize())
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if len(ciphertext) < gcm.NonceSize() {
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if len(ciphertext) < gcm.NonceSize() {
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return "", errors.New("short ciphertext")
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return "", errors.New("short ciphertext")
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}
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}
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