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Which of the following should Jane select for the tunnel encryption?

Jane, a VPN administrator, was asked to implement an encryption cipher with a MINIMUM
effective security of 128-bits. Which of the following should Jane select for the tunnel encryption?

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A.
Blowfish

B.
DES

C.
SHA256

D.
HMAC

Explanation:
Blowfish is an encryption system that performs a 64-bit block cipher at very fast speeds. It is a
symmetric block cipher that can use variable-length keys (from 32 bits to 448 bits). Among the
alternatives listed above, it is the only cipher that can use a 128-bit key and which does provide
additional security through a symmetric key.


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