Decrypt given data previously encoded with aes-128-ecb cipher algo. AES-128 in Electronic Codebook mode. A straightforward block encryption mode with independent encryption per block. Not secure due to lack of diffusion; identical plaintext blocks result in identical ciphertext blocks. Our decryption process assumes the IV string is prepended in the encoded string during the encryption process. You can not decrypt and get the correct results if the IV or passphrase mismatch occurs between encryption and decryption process.