Call the toll-free hotline at (800) 282-0880 during regular business hours (7:30 a.m. to 5:00 p.m.) Monday through Friday. If you're having trouble managing your home energy costs, we can help. Below is a list of programs that improve your home's efficiency and help manage home energy bills.
Princeton's WordNet(0.00 / 0 votes)Rate this definition: 1  cipher, cypher(noun) a message written in a secret code. 2  zero, 0, nought, cipher, cypher(noun) a mathematical element that when added to another number yields the same number.
In an encryption scheme, the intended communication information or message, referred to as plaintext, is encrypted using an encryption algorithm, generating ciphertext that can only be read if decrypted.