CISSP Information Systems Security

Answer: C - One-way Functions are mathematical functions that are easier to compute in one direction than in the opposite direction. This concept is similar to how a one-way function is used in cryptography, which is what the RSA algorithm and all other asymmetric algorithms is based upon. When a one-way function is carried out in the easy direction, encryption and digital signature verification functionality are available. When the one-way function is carried out in the hard direction, decryption and signature generation functionality are available. This means only the public key can carry out encryption and signature verification and only the private key can carry out decryption and signature generation.