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Match the following:
| Column A (Protocol) | Column B (Description) |
|---|---|
| 1. PGP | A. Encrypts individual HTTP messages, used for server authentication |
| 2. S/MIME | B. Provides end-to-end security at the IP layer, encrypts each packet |
| 3. S-HTTP | C. Uses RSA for email encryption, requires X.509 certificates |
| 4. IPsec | D. Combines symmetric and asymmetric encryption for email/files |
| 5. TLS | E. Supersedes SSL, uses Handshake and Record protocols |