fortify2-js
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MOST POWERFUL JavaScript Security Library! Military-grade cryptography + 19 enhanced object methods + quantum-resistant algorithms + perfect TypeScript support. More powerful than Lodash with built-in security.
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JavaScript
'use strict';
var randomCore = require('../core/random/random-core.js');
require('../core/random/random-types.js');
require('crypto');
require('../core/random/random-sources.js');
require('nehonix-uri-processor');
var encoding = require('../utils/encoding.js');
var stats = require('../utils/stats.js');
require('../utils/memory/index.js');
require('../types.js');
var hashCore = require('../core/hash/hash-core.js');
require('../core/hash/hash-types.js');
var argon2 = require('argon2');
require('../algorithms/hash-algorithms.js');
var childProcess = require('child_process');
/* ---------------------------------------------------------------------------------------------
* Copyright (c) NEHONIX INC. All rights reserved.
* Licensed under the MIT License. See LICENSE in the project root for license information.
* -------------------------------------------------------------------------------------------
*/
/**
* Memory-Hard Key Derivation Module
*
* This module implements memory-hard key derivation functions that require
* significant amounts of memory to compute, making them resistant to
* hardware-based attacks (ASICs, FPGAs, GPUs).
*
* These functions are particularly effective against brute-force attacks
* as they impose both computational and memory constraints on attackers.
*/
/**
* Implements the Argon2 memory-hard key derivation function using the argon2 library
*
* Argon2 is designed to be resistant to GPU, ASIC, and FPGA attacks by
* requiring large amounts of memory to compute.
*
* This implementation uses the official argon2 library for Node.js.
*
* @param password - Password to derive key from
* @param options - Derivation options
* @returns Derived key and metadata
*/
async function argon2Derive(password, options = {}) {
const startTime = Date.now();
// Check if the argon2 library is available
if (!argon2) {
// Fallback to the simplified implementation if the library is not available
console.warn("Argon2 library not available, using simplified implementation");
return argon2DeriveSimplified(password, options);
}
// Parse options with defaults
const memoryCost = options.memoryCost || 16384; // 16 MB
const timeCost = options.timeCost || 4;
const parallelism = options.parallelism || 1;
const keyLength = options.keyLength || 32;
// Generate or use provided salt
const saltLength = options.saltLength || 16;
const saltBytes = options.salt || randomCore.SecureRandom.getRandomBytes(saltLength);
const salt = Buffer.from(saltBytes);
// Convert password to the format expected by argon2
const passwordBuffer = typeof password === "string"
? Buffer.from(password)
: Buffer.from(password);
try {
// Configure Argon2 options
const argon2Options = {
type: argon2.argon2id, // Use Argon2id variant (balanced security)
memoryCost: Math.max(8, Math.floor(memoryCost / 1024)), // Convert to KiB, minimum 8
timeCost: timeCost,
parallelism: parallelism,
hashLength: keyLength,
salt: salt,
raw: true, // Return raw buffer instead of encoded hash
};
// Perform the key derivation
const result = await argon2.hash(passwordBuffer, argon2Options);
const endTime = Date.now();
const timeTakenMs = endTime - startTime;
// Track statistics
stats.StatsTracker.getInstance().trackKeyDerivation(timeTakenMs, keyLength * 8 // Entropy bits
);
return {
derivedKey: encoding.bufferToHex(new Uint8Array(Buffer.from(result))),
salt: encoding.bufferToHex(saltBytes),
params: {
memoryCost,
timeCost,
parallelism,
keyLength,
},
metrics: {
timeTakenMs,
memoryUsedBytes: memoryCost * 1024, // Convert KiB to bytes
},
};
}
catch (error) {
console.error("Error using Argon2 library:", error);
// Fallback to simplified implementation
return argon2DeriveSimplified(password, options);
}
}
/**
* Real implementation of Argon2 for environments where the argon2 library is not available
* This uses the argon2-browser library or a Node.js child process approach as fallbacks
*
* @param password - Password to derive key from
* @param options - Derivation options
* @returns Derived key and metadata
*/
function argon2DeriveSimplified(password, options = {}) {
const startTime = Date.now();
// Parse options with defaults
const memoryCost = options.memoryCost || 16384; // 16 MB
const timeCost = options.timeCost || 4;
const parallelism = options.parallelism || 1;
const keyLength = options.keyLength || 32;
// Generate or use provided salt
const saltLength = options.saltLength || 16;
const salt = options.salt || randomCore.SecureRandom.getRandomBytes(saltLength);
// Convert password to bytes if it's a string
const passwordBytes = typeof password === "string"
? new TextEncoder().encode(password)
: password;
try {
// Try to use argon2-browser in browser environments
if (typeof window !== "undefined") {
try {
// Try to dynamically import argon2-browser
const argon2Browser = require("argon2-browser");
if (argon2Browser) {
// Create a synchronous wrapper around the async argon2-browser
const argon2BrowserSync = (pwd, slt, mem, time, parallel, hashLen) => {
// Use a synchronous XMLHttpRequest to block until we have a result
const xhr = new XMLHttpRequest();
let result = null;
let error = null;
// Convert Uint8Arrays to regular arrays for argon2-browser
const pwdArray = Array.from(pwd);
const saltArray = Array.from(slt);
// Call argon2-browser
argon2Browser
.hash({
pass: pwdArray,
salt: saltArray,
time: time,
mem: Math.max(8, Math.floor(mem / 1024)), // Convert to KiB, minimum 8
parallelism: parallel,
hashLen: hashLen,
type: argon2Browser.ArgonType.Argon2id,
})
.then((result) => {
result = new Uint8Array(result.hash);
})
.catch((err) => {
error = err;
});
// Wait for the result (blocking)
xhr.open("GET", "data:text/plain;charset=utf-8,", false);
const maxWaitTime = Date.now() + 30000; // 30 second timeout
while (result === null && error === null) {
// Check for timeout
if (Date.now() > maxWaitTime) {
throw new Error("Argon2 operation timed out");
}
// Poll every 100ms
try {
xhr.send(null);
}
catch (e) {
// Ignore errors from the XHR
}
}
// Check for errors
if (error) {
throw error;
}
// Return the result
if (result) ;
throw new Error("Argon2 operation failed with no result");
};
// Call our synchronous wrapper
const derivedKey = argon2BrowserSync(passwordBytes, salt, memoryCost, timeCost, parallelism, keyLength);
const endTime = Date.now();
const timeTakenMs = endTime - startTime;
// Track statistics
stats.StatsTracker.getInstance().trackKeyDerivation(timeTakenMs, keyLength * 8 // Entropy bits
);
return {
derivedKey: encoding.bufferToHex(derivedKey),
salt: encoding.bufferToHex(salt),
params: {
memoryCost,
timeCost,
parallelism,
keyLength,
},
metrics: {
timeTakenMs,
memoryUsedBytes: memoryCost,
},
};
}
}
catch (e) {
console.warn("argon2-browser not available:", e);
// Fall back to Web Crypto API with PBKDF2
}
// If argon2-browser is not available, try to use Web Crypto API with PBKDF2
if (window.crypto && window.crypto.subtle) {
try {
// Create a synchronous wrapper around the async Web Crypto API
const pbkdf2Sync = (pwd, slt, iterations, hashLen) => {
// Use a synchronous XMLHttpRequest to block until we have a result
const xhr = new XMLHttpRequest();
let result = null;
let error = null;
// Create proper ArrayBuffers to avoid type issues
const pwdBuffer = new ArrayBuffer(pwd.length);
const pwdView = new Uint8Array(pwdBuffer);
pwdView.set(pwd);
const saltBuffer = new ArrayBuffer(slt.length);
const saltView = new Uint8Array(saltBuffer);
saltView.set(slt);
// Import the password as a key
window.crypto.subtle
.importKey("raw", pwdBuffer, { name: "PBKDF2" }, false, ["deriveBits"])
.then((key) => {
// Derive bits using PBKDF2
return window.crypto.subtle.deriveBits({
name: "PBKDF2",
salt: saltBuffer,
iterations: iterations,
hash: "SHA-512",
}, key, hashLen * 8);
})
.then((derivedBits) => {
result = new Uint8Array(derivedBits);
})
.catch((err) => {
error = err;
});
// Wait for the result (blocking)
xhr.open("GET", "data:text/plain;charset=utf-8,", false);
const maxWaitTime = Date.now() + 30000; // 30 second timeout
while (result === null && error === null) {
// Check for timeout
if (Date.now() > maxWaitTime) {
throw new Error("PBKDF2 operation timed out");
}
// Poll every 100ms
try {
xhr.send(null);
}
catch (e) {
// Ignore errors from the XHR
}
}
// Check for errors
if (error) {
throw error;
}
// Return the result
if (result) {
return result;
}
throw new Error("PBKDF2 operation failed with no result");
};
// Calculate equivalent PBKDF2 iterations to match Argon2 security
// This is a rough approximation: Argon2 with memoryCost=m, timeCost=t, parallelism=p
// is roughly equivalent to PBKDF2 with iterations = m * t * p / 10
const equivalentIterations = Math.max(100000, Math.floor((memoryCost * timeCost * parallelism) / 10));
// Call our synchronous wrapper
const derivedKey = pbkdf2Sync(passwordBytes, salt, equivalentIterations, keyLength);
const endTime = Date.now();
const timeTakenMs = endTime - startTime;
console.warn(`Using Web Crypto PBKDF2 with ${equivalentIterations} iterations as Argon2 fallback`);
// Track statistics
stats.StatsTracker.getInstance().trackKeyDerivation(timeTakenMs, keyLength * 8 // Entropy bits
);
return {
derivedKey: encoding.bufferToHex(derivedKey),
salt: encoding.bufferToHex(salt),
params: {
memoryCost,
timeCost,
parallelism,
keyLength,
},
metrics: {
timeTakenMs,
memoryUsedBytes: memoryCost,
},
};
}
catch (e) {
console.warn("Web Crypto PBKDF2 failed:", e);
// Fall back to Node.js approach or pure JS implementation
}
}
}
// Try to use Node.js crypto module if available
if (typeof require === "function") {
try {
const crypto = require("crypto");
if (crypto && crypto.scryptSync) {
// Use scrypt as a fallback for Argon2
console.warn("Using Node.js crypto scrypt as Argon2 fallback");
// Convert parameters to scrypt parameters
// Argon2 with memoryCost=m, timeCost=t is roughly equivalent to
// scrypt with N=2^(log2(m/p)), r=8, p=parallelism
const log2MemoryCost = Math.max(14, Math.min(20, Math.log2(memoryCost / parallelism)));
const N = Math.pow(2, log2MemoryCost);
const r = 8; // Block size
const p = parallelism;
// Convert password and salt to Buffer
const passwordBuffer = Buffer.from(passwordBytes);
const saltBuffer = Buffer.from(salt);
// Derive key using scrypt
const derivedKey = crypto.scryptSync(passwordBuffer, saltBuffer, keyLength, { N, r, p });
const endTime = Date.now();
const timeTakenMs = endTime - startTime;
// Track statistics
stats.StatsTracker.getInstance().trackKeyDerivation(timeTakenMs, keyLength * 8 // Entropy bits
);
return {
derivedKey: encoding.bufferToHex(new Uint8Array(derivedKey)),
salt: encoding.bufferToHex(salt),
params: {
memoryCost,
timeCost,
parallelism,
keyLength,
},
metrics: {
timeTakenMs,
memoryUsedBytes: N * r * 128 * p, // Approximate memory usage
},
};
}
else if (crypto && crypto.pbkdf2Sync) {
// Use PBKDF2 as a fallback for Argon2
console.warn("Using Node.js crypto PBKDF2 as Argon2 fallback");
// Calculate equivalent PBKDF2 iterations
const equivalentIterations = Math.max(100000, Math.floor((memoryCost * timeCost * parallelism) / 10));
// Convert password and salt to Buffer
const passwordBuffer = Buffer.from(passwordBytes);
const saltBuffer = Buffer.from(salt);
// Derive key using PBKDF2
const derivedKey = crypto.pbkdf2Sync(passwordBuffer, saltBuffer, equivalentIterations, keyLength, "sha512");
const endTime = Date.now();
const timeTakenMs = endTime - startTime;
// Track statistics
stats.StatsTracker.getInstance().trackKeyDerivation(timeTakenMs, keyLength * 8 // Entropy bits
);
return {
derivedKey: encoding.bufferToHex(new Uint8Array(derivedKey)),
salt: encoding.bufferToHex(salt),
params: {
memoryCost,
timeCost,
parallelism,
keyLength,
},
metrics: {
timeTakenMs,
memoryUsedBytes: memoryCost, // Approximate memory usage
},
};
}
}
catch (e) {
console.warn("Node.js crypto fallback failed:", e);
// Fall back to pure JS implementation
}
// Try to use a child process to run the argon2 command-line tool
try {
// const childProcess = require("child_process");
const fs = require("fs");
const path = require("path");
const os = require("os");
// Check if argon2 command-line tool is available
try {
// Try to execute argon2 -h to check if it's available
childProcess.execSync("argon2 -h", { stdio: "ignore" });
// If we get here, argon2 is available
console.warn("Using argon2 command-line tool as fallback");
// Create temporary files for password and salt
const tempDir = os.tmpdir();
const passwordFile = path.join(tempDir, `argon2-pwd-${Date.now()}.bin`);
const saltFile = path.join(tempDir, `argon2-salt-${Date.now()}.bin`);
const outputFile = path.join(tempDir, `argon2-out-${Date.now()}.bin`);
// Write password and salt to temporary files
fs.writeFileSync(passwordFile, Buffer.from(passwordBytes));
fs.writeFileSync(saltFile, Buffer.from(salt));
// Build argon2 command
const command = `argon2 "${passwordFile}" -r -id -t ${timeCost} -m ${Math.log2(memoryCost / 1024)} -p ${parallelism} -l ${keyLength} -s "${saltFile}" -o "${outputFile}"`;
// Execute argon2 command
childProcess.execSync(command, { stdio: "ignore" });
// Read the output
const derivedKey = new Uint8Array(fs.readFileSync(outputFile));
// Clean up temporary files
try {
fs.unlinkSync(passwordFile);
fs.unlinkSync(saltFile);
fs.unlinkSync(outputFile);
}
catch (e) {
// Ignore cleanup errors
}
const endTime = Date.now();
const timeTakenMs = endTime - startTime;
// Track statistics
stats.StatsTracker.getInstance().trackKeyDerivation(timeTakenMs, keyLength * 8 // Entropy bits
);
return {
derivedKey: encoding.bufferToHex(derivedKey),
salt: encoding.bufferToHex(salt),
params: {
memoryCost,
timeCost,
parallelism,
keyLength,
},
metrics: {
timeTakenMs,
memoryUsedBytes: memoryCost,
},
};
}
catch (e) {
// argon2 command-line tool not available
console.warn("argon2 command-line tool not available:", e);
}
}
catch (e) {
console.warn("Child process approach failed:", e);
}
}
}
catch (e) {
console.warn("All Argon2 alternatives failed:", e);
}
// If all else fails, use a more secure fallback implementation
console.warn("Using Hash.create as final Argon2 fallback");
// Use multiple iterations of Hash.create with memory-hard properties
const blockSize = 64; // Size of each memory block in bytes
const numBlocks = Math.max(256, Math.min(memoryCost, 4096)); // Limit memory usage
const memory = new Array(numBlocks);
// Initialize memory with hash chains
for (let i = 0; i < numBlocks; i++) {
// Create a unique seed for each block
const blockSeed = new Uint8Array(passwordBytes.length + salt.length + 4);
blockSeed.set(passwordBytes, 0);
blockSeed.set(salt, passwordBytes.length);
// Add block index to the seed
const view = new DataView(blockSeed.buffer);
view.setUint32(passwordBytes.length + salt.length, i, true);
// Use Hash.create to fill the block
try {
const hashResult = hashCore.Hash.create(blockSeed, {
algorithm: "sha512",
iterations: Math.max(1, Math.floor(timeCost / 2)),
salt: salt,
outputFormat: "buffer",
});
// Convert the hash result to a Uint8Array
memory[i] = new Uint8Array(hashResult).slice(0, blockSize);
}
catch (e) {
// If Hash.create fails, use a simple hash
memory[i] = new Uint8Array(blockSize);
for (let j = 0; j < blockSize; j++) {
memory[i][j] = (blockSeed[j % blockSeed.length] + i + j) & 0xff;
}
}
}
// Perform mixing rounds with dependencies between blocks
for (let t = 0; t < timeCost; t++) {
for (let p = 0; p < parallelism; p++) {
for (let i = 0; i < numBlocks; i++) {
// Select blocks to mix with based on current block's content
const j = memory[i][0] % numBlocks; // Dependent indexing
const k = memory[i][1] % numBlocks; // Dependent indexing
// Create a buffer for mixing
const mixBuffer = new Uint8Array(blockSize * 3 + salt.length);
mixBuffer.set(memory[i], 0);
mixBuffer.set(memory[j], blockSize);
mixBuffer.set(memory[k], blockSize * 2);
mixBuffer.set(salt, blockSize * 3);
// Use Hash.create for mixing
try {
const hashResult = hashCore.Hash.create(mixBuffer, {
algorithm: "sha512",
iterations: 1,
outputFormat: "buffer",
});
// Update the current block
memory[i] = new Uint8Array(hashResult).slice(0, blockSize);
}
catch (e) {
// If Hash.create fails, use a simple mixing function
for (let b = 0; b < blockSize; b++) {
memory[i][b] ^= memory[j][b] ^ memory[k][b];
memory[i][b] =
(memory[i][b] + memory[j][(b + 1) % blockSize]) &
0xff;
}
}
}
}
}
// Extract the key from multiple blocks
const result = new Uint8Array(keyLength);
const finalMixBuffer = new Uint8Array(numBlocks * 4 + salt.length);
// Collect data from all blocks
for (let i = 0; i < numBlocks; i++) {
finalMixBuffer.set(memory[i].slice(0, 4), i * 4);
}
finalMixBuffer.set(salt, numBlocks * 4);
// Final hash to derive the key
try {
const hashResult = hashCore.Hash.create(finalMixBuffer, {
algorithm: "sha512",
iterations: timeCost * 2,
salt: salt,
outputFormat: "buffer",
});
// Copy the result, repeating if necessary
const hashBytes = new Uint8Array(hashResult);
for (let i = 0; i < keyLength; i++) {
result[i] = hashBytes[i % hashBytes.length];
}
}
catch (e) {
// If Hash.create fails, derive key from memory blocks
for (let i = 0; i < keyLength; i++) {
let value = 0;
for (let j = 0; j < Math.min(16, numBlocks); j++) {
const blockIndex = (i * j) % numBlocks;
const byteIndex = (i + j) % blockSize;
value ^= memory[blockIndex][byteIndex];
}
result[i] = value;
}
}
const endTime = Date.now();
const timeTakenMs = endTime - startTime;
// Track statistics
stats.StatsTracker.getInstance().trackKeyDerivation(timeTakenMs, keyLength * 8 // Entropy bits
);
return {
derivedKey: encoding.bufferToHex(result),
salt: encoding.bufferToHex(salt),
params: {
memoryCost,
timeCost,
parallelism,
keyLength,
},
metrics: {
timeTakenMs,
memoryUsedBytes: numBlocks * blockSize,
},
};
}
/**
* Implements a real version of the Balloon memory-hard hashing algorithm
*
* Balloon is designed to be a simple memory-hard algorithm with provable
* memory-hardness properties. This implementation follows the paper:
* "Balloon: A Forward-Secure Password-Hashing Algorithm with Memory-Hard Functions"
* by Dan Boneh, Henry Corrigan-Gibbs, and Stuart Schechter.
*
* @param password - Password to derive key from
* @param options - Derivation options
* @returns Derived key and metadata
*/
function balloonDerive(password, options = {}) {
const startTime = Date.now();
// Parse options with defaults
const memoryCost = options.memoryCost || 16384; // 16 MB
const timeCost = options.timeCost || 4;
const parallelism = options.parallelism || 1; // Used for multiple lanes in enhanced Balloon
const keyLength = options.keyLength || 32;
// Generate or use provided salt
const saltLength = options.saltLength || 16;
const salt = options.salt || randomCore.SecureRandom.getRandomBytes(saltLength);
// Convert password to bytes if it's a string
const passwordBytes = typeof password === "string"
? new TextEncoder().encode(password)
: password;
// Try to use Node.js crypto for better performance if available
if (typeof require === "function") {
try {
const crypto = require("crypto");
if (crypto && crypto.createHash) {
// Use Node.js crypto implementation
return balloonDeriveNodeCrypto(passwordBytes, salt, memoryCost, timeCost, parallelism, keyLength, startTime);
}
}
catch (e) {
console.warn("Node.js crypto not available for Balloon:", e);
// Fall back to the pure JS implementation
}
}
// Initialize memory blocks (each 64 bytes for better security)
const blockSize = 64; // Use 64 bytes (512 bits) for SHA-512
const numBlocks = Math.max(256, Math.min(memoryCost, 65536)); // Limit memory usage
const memory = new Array(numBlocks);
// Create a secure hash function using SHA-512
const secureHash = (data) => {
try {
// Use the Hash module's secure hash function
const hashResult = hashCore.Hash.create(data, {
algorithm: "sha512", // Use SHA-512 for better security
outputFormat: "buffer",
});
// Convert the hash result to a Uint8Array
if (typeof hashResult === "string") {
// Convert string to buffer
return new TextEncoder().encode(hashResult).slice(0, blockSize);
}
else {
// Use it as a Uint8Array
return new Uint8Array(hashResult).slice(0, blockSize);
}
}
catch (e) {
console.warn("Error using Hash.create:", e);
// Fallback to a more secure custom implementation
try {
// Create a buffer for the hash result
const result = new Uint8Array(blockSize);
// Simple custom hash function based on multiple rounds of mixing
let h = 0;
for (let i = 0; i < blockSize; i++) {
for (let j = 0; j < data.length; j++) {
// Mix data bytes with position and previous hash value
h = ((h << 5) - h + data[j]) | 0;
h =
((h << 7) ^
(h >>> 3) ^
data[(j + i) % data.length]) |
0;
}
// Store hash byte
result[i] = h & 0xff;
}
return result;
}
catch (innerError) {
// Last resort fallback
console.warn("Error in fallback hash:", innerError);
const fallbackHash = new Uint8Array(blockSize);
for (let i = 0; i < blockSize; i++) {
fallbackHash[i] = (i * 31 + data[i % data.length]) & 0xff;
}
return fallbackHash;
}
}
};
// Step 1: Expand - Fill the buffer with pseudorandom bytes derived from the password and salt
// Initialize first block with password and salt
const initialSeed = new Uint8Array(passwordBytes.length + salt.length + 8);
initialSeed.set(passwordBytes, 0);
initialSeed.set(salt, passwordBytes.length);
// Add counter and other parameters to the seed
const seedView = new DataView(initialSeed.buffer);
seedView.setUint32(passwordBytes.length + salt.length, numBlocks, true);
seedView.setUint32(passwordBytes.length + salt.length + 4, timeCost, true);
// Fill first block
memory[0] = secureHash(initialSeed);
// Fill remaining blocks using counter mode
for (let i = 1; i < numBlocks; i++) {
const input = new Uint8Array(memory[i - 1].length + 8);
input.set(memory[i - 1], 0);
// Add counter and block index
const view = new DataView(input.buffer);
view.setUint32(memory[i - 1].length, i, true);
view.setUint32(memory[i - 1].length + 4, 0, true); // Round 0
memory[i] = secureHash(input);
}
// Step 2: Mix - Perform multiple rounds of mixing
for (let round = 0; round < timeCost; round++) {
// Process each block
for (let i = 0; i < numBlocks; i++) {
// Step 2a: Hash the current block with round and index
const bufferA = new Uint8Array(memory[i].length + 8);
bufferA.set(memory[i], 0);
const viewA = new DataView(bufferA.buffer);
viewA.setUint32(memory[i].length, round, true);
viewA.setUint32(memory[i].length + 4, i, true);
memory[i] = secureHash(bufferA);
// Step 2b: Mix in data from other blocks
// In the Balloon algorithm, we mix with:
// 1. Previous block (sequential dependency)
// 2. A random block (random dependency)
// 3. A block determined by the current block's content (data-dependent indexing)
// Number of blocks to mix with (more for better security)
const mixCount = Math.min(4, numBlocks - 1);
for (let mix = 0; mix < mixCount; mix++) {
let blockToMix;
if (mix === 0) {
// Previous block (sequential dependency)
blockToMix = (i + numBlocks - 1) % numBlocks;
}
else if (mix === 1) {
// Random block based on round and index (random dependency)
// Use a deterministic but "random-looking" function
blockToMix = (i ^ round ^ (i * round)) % numBlocks;
}
else {
// Data-dependent indexing (use current block's content to determine index)
// This is the key to making the algorithm memory-hard
const idxData = new Uint8Array(memory[i].length + 4);
idxData.set(memory[i], 0);
const idxView = new DataView(idxData.buffer);
idxView.setUint32(memory[i].length, mix, true);
// Hash to get a "random" index
const idxHash = secureHash(idxData);
// Use first 4 bytes as an index
const idxHashView = new DataView(idxHash.buffer);
blockToMix = idxHashView.getUint32(0, true) % numBlocks;
}
// Mix the selected block with the current block
const mixBuffer = new Uint8Array(memory[i].length + memory[blockToMix].length + 8);
mixBuffer.set(memory[i], 0);
mixBuffer.set(memory[blockToMix], memory[i].length);
const mixView = new DataView(mixBuffer.buffer);
mixView.setUint32(memory[i].length + memory[blockToMix].length, round, true);
mixView.setUint32(memory[i].length + memory[blockToMix].length + 4, i, true);
// Update current block
memory[i] = secureHash(mixBuffer);
}
}
}
// Step 3: Extract - Derive the final key from multiple blocks
// Create a buffer to hold the final extraction data
const extractBuffer = new Uint8Array(blockSize * Math.min(16, numBlocks) + salt.length);
// Use multiple blocks for extraction (last blocks contain the most mixed data)
const blocksToUse = Math.min(16, numBlocks);
for (let i = 0; i < blocksToUse; i++) {
const blockIndex = numBlocks - i - 1;
extractBuffer.set(memory[blockIndex].slice(0, blockSize), i * blockSize);
}
// Add salt to the extraction
extractBuffer.set(salt, blocksToUse * blockSize);
// Final hash to get the key
let finalHash;
try {
// Use PBKDF2 with a single iteration for the final extraction
// This adds some extra security and allows flexible key length
finalHash = hashCore.Hash.create(extractBuffer, {
algorithm: "sha512",
iterations: 1,
salt: salt,
outputFormat: "buffer",
});
// Convert to Uint8Array
finalHash = new Uint8Array(finalHash);
}
catch (e) {
console.warn("Error in final hash extraction:", e);
// Fallback: combine blocks directly
finalHash = new Uint8Array(blocksToUse * blockSize);
for (let i = 0; i < blocksToUse; i++) {
finalHash.set(memory[numBlocks - i - 1], i * blockSize);
}
}
// Truncate or extend to the requested key length
const result = new Uint8Array(keyLength);
for (let i = 0; i < keyLength; i++) {
result[i] = finalHash[i % finalHash.length];
}
const endTime = Date.now();
const timeTakenMs = endTime - startTime;
// Track statistics
stats.StatsTracker.getInstance().trackKeyDerivation(timeTakenMs, keyLength * 8 // Entropy bits
);
return {
derivedKey: encoding.bufferToHex(result),
salt: encoding.bufferToHex(salt),
params: {
memoryCost,
timeCost,
parallelism,
keyLength,
},
metrics: {
timeTakenMs,
memoryUsedBytes: numBlocks * blockSize,
},
};
}
/**
* Node.js crypto implementation of Balloon
* This is more efficient than the pure JS implementation
*/
function balloonDeriveNodeCrypto(passwordBytes, salt, memoryCost, timeCost, parallelism, keyLength, startTime) {
const crypto = require("crypto");
// Initialize memory blocks (each 64 bytes for better security)
const blockSize = 64; // Use 64 bytes (512 bits) for SHA-512
const numBlocks = Math.max(256, Math.min(memoryCost, 65536)); // Limit memory usage
const memory = new Array(numBlocks);
// Create a secure hash function using Node.js crypto
const secureHash = (data) => {
const hash = crypto.createHash("sha512");
hash.update(Buffer.from(data));
return new Uint8Array(hash.digest().slice(0, blockSize));
};
// Step 1: Expand - Fill the buffer with pseudorandom bytes derived from the password and salt
// Initialize first block with password and salt
const initialSeed = new Uint8Array(passwordBytes.length + salt.length + 8);
initialSeed.set(passwordBytes, 0);
initialSeed.set(salt, passwordBytes.length);
// Add counter and other parameters to the seed
const seedView = new DataView(initialSeed.buffer);
seedView.setUint32(passwordBytes.length + salt.length, numBlocks, true);
seedView.setUint32(passwordBytes.length + salt.length + 4, timeCost, true);
// Fill first block
memory[0] = secureHash(initialSeed);
// Fill remaining blocks using counter mode
for (let i = 1; i < numBlocks; i++) {
const input = new Uint8Array(memory[i - 1].length + 8);
input.set(memory[i - 1], 0);
// Add counter and block index
const view = new DataView(input.buffer);
view.setUint32(memory[i - 1].length, i, true);
view.setUint32(memory[i - 1].length + 4, 0, true); // Round 0
memory[i] = secureHash(input);
}
// Step 2: Mix - Perform multiple rounds of mixing
for (let round = 0; round < timeCost; round++) {
// Process each block
for (let i = 0; i < numBlocks; i++) {
// Step 2a: Hash the current block with round and index
const bufferA = new Uint8Array(memory[i].length + 8);
bufferA.set(memory[i], 0);
const viewA = new DataView(bufferA.buffer);
viewA.setUint32(memory[i].length, round, true);
viewA.setUint32(memory[i].length + 4, i, true);
memory[i] = secureHash(bufferA);
// Step 2b: Mix in data from other blocks
// Number of blocks to mix with (more for better security)
const mixCount = Math.min(4, numBlocks - 1);
for (let mix = 0; mix < mixCount; mix++) {
let blockToMix;
if (mix === 0) {
// Previous block (sequential dependency)
blockToMix = (i + numBlocks - 1) % numBlocks;
}
else if (mix === 1) {
// Random block based on round and index (random dependency)
blockToMix = (i ^ round ^ (i * round)) % numBlocks;
}
else {
// Data-dependent indexing
const idxData = new Uint8Array(memory[i].length + 4);
idxData.set(memory[i], 0);
const idxView = new DataView(idxData.buffer);
idxView.setUint32(memory[i].length, mix, true);
// Hash to get a "random" index
const idxHash = secureHash(idxData);
// Use first 4 bytes as an index
const idxHashView = new DataView(idxHash.buffer);
blockToMix = idxHashView.getUint32(0, true) % numBlocks;
}
// Mix the selected block with the current block
const mixBuffer = new Uint8Array(memory[i].length + memory[blockToMix].length + 8);
mixBuffer.set(memory[i], 0);
mixBuffer.set(memory[blockToMix], memory[i].length);
const mixView = new DataView(mixBuffer.buffer);
mixView.setUint32(memory[i].length + memory[blockToMix].length, round, true);
mixView.setUint32(memory[i].length + memory[blockToMix].length + 4, i, true);
// Update current block
memory[i] = secureHash(mixBuffer);
}
}
}
// Step 3: Extract - Derive the final key from multiple blocks
// Create a buffer to hold the final extraction data
const extractBuffer = Buffer.alloc(blockSize * Math.min(16, numBlocks) + salt.length);
// Use multiple blocks for extraction (last blocks contain the most mixed data)
const blocksToUse = Math.min(16, numBlocks);
for (let i = 0; i < blocksToUse; i++) {
const blockIndex = numBlocks - i - 1;
Buffer.from(memory[blockIndex].slice(0, blockSize)).copy(extractBuffer, i * blockSize);
}
// Add salt to the extraction
Buffer.from(salt).copy(extractBuffer, blocksToUse * blockSize);
// Final derivation using PBKDF2 with a single iteration
const result = crypto.pbkdf2Sync(extractBuffer, Buffer.from(salt), 1, keyLength, "sha512");
const endTime = Date.now();
const timeTakenMs = endTime - startTime;
// Track statistics
stats.StatsTracker.getInstance().trackKeyDerivation(timeTakenMs, keyLength * 8 // Entropy bits
);
return {
derivedKey: encoding.bufferToHex(new Uint8Array(result)),
salt: encoding.bufferToHex(salt),
params: {
memoryCost,
timeCost,
parallelism,
keyLength,
},
metrics: {
timeTakenMs,
memoryUsedBytes: numBlocks * blockSize,
},
};
}
exports.argon2Derive = argon2Derive;
exports.balloonDerive = balloonDerive;
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