What two elements will thi challenge contain?

As telnet is widely know to be insecure, one time passwords (OPIE) offer a great alternative. After
a user logs on remotely, OPIE will issue a challenge. What two elements will thi challenge
contain?( Choose two)

As telnet is widely know to be insecure, one time passwords (OPIE) offer a great alternative. After
a user logs on remotely, OPIE will issue a challenge. What two elements will thi challenge
contain?( Choose two)

A.
CHAP

B.
A hashed value

C.
A random value

D.
A seed number

E.
A sequence number

Explanation:

OPIE is based on S/Key, supports MD5, and features a challenge that contains the following two
elements: A seed value, which is a fixed number for each account, and a sequence number, which
begins at 499 and decrements each time a user logs in.



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