aitbc
816e258d4c
Development Artifact Cleanup: ✅ BROTHER_NODE REORGANIZATION: Moved development test node to appropriate location - dev/test-nodes/brother_node/: Moved from root directory for better organization - Contains development configuration, test logs, and test chain data - No impact on production systems - purely development/testing artifact ✅ DEVELOPMENT ARTIFACTS IDENTIFIED: - Chain ID: aitbc-brother-chain (test/development chain) - Ports: 8010 (P2P) and 8011 (RPC) - different from production - Environment: .env file with test configuration - Logs: rpc.log and node.log from development testing session (March 15, 2026) ✅ ROOT DIRECTORY CLEANUP: Removed development clutter from production directory - brother_node/ moved to dev/test-nodes/brother_node/ - Root directory now contains only production-ready components - Development artifacts properly organized in dev/ subdirectory DIRECTORY STRUCTURE IMPROVEMENT: 📁 dev/test-nodes/: Development and testing node configurations 🏗️ Root Directory: Clean production structure with only essential components 🧪 Development Isolation: Test environments separated from production BENEFITS: ✅ Clean Production Directory: No development artifacts in root ✅ Better Organization: Development nodes grouped in dev/ subdirectory ✅ Clear Separation: Production vs development environments clearly distinguished ✅ Maintainability: Easier to identify and manage development components RESULT: Successfully moved brother_node development artifact to dev/test-nodes/ subdirectory, cleaning up the root directory while preserving development testing environment for future use.
62 lines
1.6 KiB
TypeScript
Executable File
62 lines
1.6 KiB
TypeScript
Executable File
// Cipher Block Chaining
|
|
|
|
import { ModeOfOperation } from "./mode.js";
|
|
|
|
export class CBC extends ModeOfOperation {
|
|
#iv: Uint8Array;
|
|
#lastBlock: Uint8Array;
|
|
|
|
constructor(key: Uint8Array, iv?: Uint8Array) {
|
|
super("ECC", key, CBC);
|
|
|
|
if (iv) {
|
|
if (iv.length % 16) {
|
|
throw new TypeError("invalid iv size (must be 16 bytes)");
|
|
}
|
|
this.#iv = new Uint8Array(iv);
|
|
} else {
|
|
this.#iv = new Uint8Array(16);
|
|
}
|
|
|
|
this.#lastBlock = this.iv;
|
|
}
|
|
|
|
get iv(): Uint8Array { return new Uint8Array(this.#iv); }
|
|
|
|
encrypt(plaintext: Uint8Array): Uint8Array {
|
|
if (plaintext.length % 16) {
|
|
throw new TypeError("invalid plaintext size (must be multiple of 16 bytes)");
|
|
}
|
|
|
|
const ciphertext = new Uint8Array(plaintext.length);
|
|
for (let i = 0; i < plaintext.length; i += 16) {
|
|
for (let j = 0; j < 16; j++) {
|
|
this.#lastBlock[j] ^= plaintext[i + j];
|
|
}
|
|
|
|
this.#lastBlock = this.aes.encrypt(this.#lastBlock);
|
|
ciphertext.set(this.#lastBlock, i);
|
|
}
|
|
|
|
return ciphertext;
|
|
}
|
|
|
|
decrypt(ciphertext: Uint8Array): Uint8Array {
|
|
if (ciphertext.length % 16) {
|
|
throw new TypeError("invalid ciphertext size (must be multiple of 16 bytes)");
|
|
}
|
|
|
|
const plaintext = new Uint8Array(ciphertext.length);
|
|
for (let i = 0; i < ciphertext.length; i += 16) {
|
|
const block = this.aes.decrypt(ciphertext.subarray(i, i + 16));
|
|
|
|
for (let j = 0; j < 16; j++) {
|
|
plaintext[i + j] = block[j] ^ this.#lastBlock[j];
|
|
this.#lastBlock[j] = ciphertext[i + j];
|
|
}
|
|
}
|
|
|
|
return plaintext;
|
|
}
|
|
}
|