1 files changed, 0 insertions, 107 deletions
diff --git a/File-decryption/webapp/main.js b/File-decryption/webapp/main.js
deleted file mode 100644
index 792eb3d..0000000
--- a/File-decryption/webapp/main.js
+++ /dev/null
@@ -1,107 +0,0 @@
-// as seen in /usr/lib/libzc.so / SetupKeys
-const MASTER_KEY = new Uint8Array([
-    0x13, 0x27, 0x3f, 0x42,
-    0xa5, 0xb6, 0x79, 0xe8,
-    0x20, 0x31, 0xc4, 0xf5,
-    0x16, 0x17, 0x88, 0x2f,
-    0x43, 0xa4, 0x55, 0x69,
-    0x77, 0xb8, 0xe2, 0x83,
-    0x04, 0x05, 0x60, 0x70,
-    0x80, 0x02, 0x03, 0x04,
-    0x50, 0x6a, 0x7c, 0x8a,
-    0x02, 0x30, 0x40, 0x51,
-    0x6a, 0x7d, 0x8d, 0x22,
-    0x33, 0x44, 0x59, 0x66,
-    0x71, 0x08, 0x02, 0x03,
-    0x43, 0x05, 0x67, 0x7a,
-    0x8f]);
-
-function hex(byteArray) {
-    return Array.prototype.map.call(byteArray, function (byte) {
-        return ('0' + (byte & 0xFF).toString(16)).slice(-2);
-    }).join('');
-}
-
-// ported from EVP_BytesToKey 
-// https://github.com/openssl/openssl/blob/c04e78f0c69201226430fed14c291c281da47f2d/crypto/evp/evp_key.c#L78
-function deriveKeyAndIV(password, iterations = 10) {
-    var keyLen = 16;
-    var ivLen = 16;
-    var addmd = 0;
-
-    var key = new Uint8Array(keyLen);
-    var iv = new Uint8Array(ivLen);
-    var tmp = new Uint8Array();
-    var i, key_i = 0, iv_i = 0;
-
-    for (; keyLen > 0 || ivLen > 0;) {
-        if (addmd++) {
-            block = new Uint8Array([...tmp, ...password]);
-        } else {
-            block = password;
-        }
-
-        tmp = new Uint8Array(sha1.array(block));
-        for (i = 1; i < iterations; i++) {
-            tmp = sha1.array(tmp);
-        }
-
-        i = 0;
-        while (keyLen && i != tmp.length) {
-            key[key_i++] = tmp[i];
-            keyLen--;
-            i++;
-        }
-
-        while (ivLen != 0 && i != tmp.length) {
-            iv[iv_i++] = tmp[i];
-            ivLen--;
-            i++;
-        }
-    }
-
-    return { key: key, iv: iv };
-}
-
-function processFileInput(e) {
-    const fileName = e.target.fileName;
-    const serial = document.getElementById('serial-input').value;
-    let main_key = null;
-    if (serial.length > 0) {
-        // local decryption, use master key + serial
-        main_key = new Uint8Array([...MASTER_KEY, ...new TextEncoder("utf-8").encode(serial)]);
-    } else {
-        // global decryption, use master key only
-        main_key = MASTER_KEY;
-    }
-
-    // derive key and iv with our EVP_BytesToKey port
-    const derived = deriveKeyAndIV(main_key);
-    // encrypted file contents
-    const ciphertext = e.target.result;
-    // import the raw key
-    window.crypto.subtle.importKey("raw", derived.key, "AES-CTR", true, ["encrypt", "decrypt"]).then(function (key) {
-        // decrypt using aes-128-ctr
-        window.crypto.subtle.decrypt({ name: "AES-CTR", counter: derived.iv, length: 128 }, key, ciphertext).then(function (cleartext) {
-            var blob = new Blob([cleartext], { type: "application/octet-stream" });
-            const link = document.createElement('a');
-            link.href = window.URL.createObjectURL(blob);
-            link.download = fileName + '.dec';
-            link.click();
-        });
-    });
-}
-
-document.addEventListener("DOMContentLoaded", function () {
-    // handle file uploads
-    let fileInput = document.getElementById('file-input')
-    fileInput.onchange = () => {
-        const reader = new FileReader()
-        reader.onload = processFileInput;
-        for (let file of fileInput.files) {
-            // https://stackoverflow.com/questions/24245105/how-to-get-the-filename-from-the-javascript-filereader
-            reader.fileName = file.name;
-            reader.readAsArrayBuffer(file);
-        }
-    };
-});
-\ No newline at end of file