Which of the following encryption algorithms is used by CHAP? 06/05/2017 – by Mod_GuideK 0 In the PPP protocol, which of the following encryption algorithms is used by CHAP? A. DES B. MD5 C. AES D. None SHOW ANSWERSCorrect Answer: B Explanation/Reference: Download Printable PDF. VALID exam to help you PASS.