Match the following terms with their definitions Algorithm Certificate Authority (CA) Ciphertext Collisions Cryptanalysis Decrypt Digital Signature Encrypt Hash function Key clustering Key space Non-repudiation Plaintext SSL/TLS Work factor A. A trusted entity or third party that issues and signs public key certificates, thereby attesting to the validity of the public keys. B. Proves that the message has not been altered (Message Integrity), and it proves who sent the message (Proof of Origin and non-repudiation). C. A security service by which evidence is maintained so that the sender and recipient of data cannot deny having participated in the communication. Referred to individually as non-repudiation of origin and non-repudiation of receipt. D. The total number of keys available to the user of a cryptosystem. E. Used to ensure message integrity. For example, when a message is sent over a communications channel, it may be altered either accidentally or intentionally while in transit. F. A weakness that would exist in a cryptosystem if two different keys would generate the same ciphertext from the same plaintext.