Encrypt given data using rc2-ecb cipher algo. RC2 in ECB (Electronic Codebook) mode, where each plaintext block is encrypted independently. RC2-ECB was widely used in early encryption systems but is vulnerable to pattern analysis in ciphertext. RC2-ECB is insecure due to the lack of chaining and is vulnerable to modern cryptographic attacks. Our encryption process prepends the IV string used during the encryption process in the encrypted data so that it can be used during decryption.