SSH is a network protocol that allows data to be exchanged between two networks using a secure channel. Which of the following encryption algorithms can be used by the SSH protocol? Each correct answe

The correct answer is A. Blowfish B. DES C. IDEA. SSH supports multiple symmetric encryption algorithms for securing data in transit. Blowfish (A), DES (B), and IDEA (C) are all block ciphers that have been included in SSH's supported cipher suite - particularly in SSH-1 and early SSH-2 implementations - and appear in various SS

Infrastructure Security

Question

SSH is a network protocol that allows data to be exchanged between two networks using a secure channel. Which of the following encryption algorithms can be used by the SSH protocol? Each correct answer represents a complete solution. Choose all that apply.

Options

ABlowfish
BDES
CIDEA
DRC4

How the community answered

(25 responses)

A
88% (22)
D
12% (3)

Explanation

SSH supports multiple symmetric encryption algorithms for securing data in transit. Blowfish (A), DES (B), and IDEA (C) are all block ciphers that have been included in SSH's supported cipher suite - particularly in SSH-1 and early SSH-2 implementations - and appear in various SSH protocol references and exam syllabi as valid options. RC4 (D) is the distractor here; it is a stream cipher more commonly associated with protocols like WEP and older SSL/TLS rather than SSH's defined cipher suite in the context of this exam objective. It's worth noting that DES, while technically correct for this question, is cryptographically broken and long deprecated in real-world SSH deployments - exams often test historical protocol knowledge, not current best practices.

Memory tip: Think "BDI Blows DES IDEAs" - Blowfish, DES, IDEA are the SSH three; RC4 is the "outsider" that belongs elsewhere.

Topics

#SSH encryption#Symmetric ciphers#Encryption protocols

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