knxultimate
Version:
KNX IP protocol implementation for Node. This is the ENGINE of Node-Red KNX-Ultimate node.
82 lines • 3.05 kB
JavaScript
;
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
var ownKeys = function(o) {
ownKeys = Object.getOwnPropertyNames || function (o) {
var ar = [];
for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
return ar;
};
return ownKeys(o);
};
return function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
__setModuleDefault(result, mod);
return result;
};
})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.bytePad = bytePad;
exports.sha256Hash = sha256Hash;
exports.extractPassword = extractPassword;
exports.decryptAes128Cbc = decryptAes128Cbc;
const crypto = __importStar(require("crypto"));
function bytePad(buffer, blockSize = 16) {
if (buffer.length % blockSize === 0) {
return buffer;
}
const paddingLength = blockSize - (buffer.length % blockSize);
const padding = Buffer.alloc(paddingLength, 0);
return Buffer.from(Buffer.concat([buffer, padding]));
}
function sha256Hash(data) {
return crypto.createHash('sha256').update(data).digest();
}
function extractPassword(data) {
if (data.length === 0) {
return '';
}
const paddingLength = data[data.length - 1];
if (paddingLength > 0 && paddingLength <= data.length) {
let validPadding = true;
for (let i = data.length - paddingLength; i < data.length; i++) {
if (data[i] !== paddingLength) {
validPadding = false;
break;
}
}
if (validPadding) {
data = data.slice(0, data.length - paddingLength);
}
}
let endPos = data.indexOf(0);
if (endPos === -1) {
endPos = data.length;
}
return data.slice(0, endPos).toString('utf8');
}
function decryptAes128Cbc(data, key, iv) {
const aesKey = key.slice(0, 16);
const aesIv = iv.slice(0, 16);
const decipher = crypto.createDecipheriv('aes-128-cbc', aesKey, aesIv);
decipher.setAutoPadding(true);
return Buffer.from(Buffer.concat([decipher.update(data), decipher.final()]));
}
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