Advanced AES Encryption
Developer-grade Advanced Encryption Standard (AES) tool with custom block cipher modes (CBC, ECB, CTR).
Operation Failed
Invalid key, wrong cipher mode, or corrupted payload.
Understanding Advanced AES Cipher Modes
The Advanced Encryption Standard (AES) is the industry standard for data encryption. However, AES operates on fixed-size blocks (128 bits). To encrypt messages longer than a single block, different Block Cipher Modes of Operation are utilized. This tool allows developers to explicitly test payloads across different standard structures directly within the browser without server exposure.
CBC (Cipher Block Chaining)
The recommended default. In CBC mode, each block of plaintext is XORed with the previous ciphertext block before being encrypted. This requires an Initialization Vector (IV) and ensures that identical plaintext blocks produce entirely different ciphertext blocks.
ECB (Electronic Codebook)
The simplest and weakest mode. Each block is encrypted independently. Identical plaintext blocks are encrypted into identical ciphertext blocks, which can reveal data patterns. It is mostly used for testing or encrypting very small, highly randomized data (like single keys).
CTR (Counter)
CTR mode turns a block cipher into a stream cipher. It encrypts a sequence of numbers (the counter) and XORs the result with the plaintext. It is highly parallelizable and very fast, making it extremely popular in modern secure communication protocols.