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// 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 };
}
async function decryptFile(fileContents, key) {
// derive key and iv with our EVP_BytesToKey port
const derived = deriveKeyAndIV(key);
// import the raw key
const cryptoKey = await window.crypto.subtle.importKey(
"raw",
derived.key,
"AES-CTR",
true,
["encrypt", "decrypt"]
);
console.log("cryptoKey", cryptoKey)
// decrypt the file contents using aes-128-ctr
const decryptedData = await window.crypto.subtle.decrypt(
{ name: "AES-CTR", counter: derived.iv, length: 128 },
cryptoKey,
fileContents
);
// create a new Blob with the decrypted data
const decryptedBlob = new Blob([decryptedData], { type: "application/octet-stream" });
return decryptedBlob;
}
async function encryptFile(fileContents, key) {
// derive key and iv with our EVP_BytesToKey port
const derived = deriveKeyAndIV(key);
// import the raw key
const cryptoKey = await window.crypto.subtle.importKey(
"raw",
derived.key,
"AES-CTR",
true,
["encrypt", "decrypt"]
);
// encrypt the file contents using aes-128-ctr
const encryptedData = await window.crypto.subtle.encrypt(
{ name: "AES-CTR", counter: derived.iv, length: 128 },
cryptoKey,
fileContents
);
// create a new Blob with the encrypted data
const encryptedBlob = new Blob([encryptedData], { type: "application/octet-stream" });
return encryptedBlob;
}
function processFileDecode(clearText) {
const protobufType = document.getElementById('protobuf-list').value;
if(protobufType != ""){
protoTypes.forEach((type)=>{
if(type.name === protobufType){
decodedProtobuf = type.decode(new Uint8Array(clearText))
}
})
}
}
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