Encrypt given data using aes-192-ctr cipher algo. AES with 192-bit key in Counter (CTR) mode, transforming a block cipher into a stream cipher by generating keystreams. Popularized for performance and parallelization advantages over CFB and OFB modes. Considered secure when a unique nonce is used, but improper nonce reuse can lead to vulnerabilities. Our encryption process prepends the IV string used during the encryption process in the encrypted data so that it can be used during decryption.