An information processing apparatus includes a memory, and a processor coupled to the memory and configured to generate, from a common key used for symmetric key cryptography, and from either an encryption process using the common key or a decryption process using the common key, an encryption lookup table corresponding to the encryption process or a decryption lookup table corresponding to the decryption process by using white box cryptography, and disseminate the generated encryption lookup table or the generated decryption lookup table as a public key.