Question: What determines the feasibility of a brute - force attack against symmetric ciphers? ( Select all that apply ) Group of answer choices The key

What determines the feasibility of a brute-force attack against symmetric ciphers? (Select all that apply)
Group of answer choices
The key space of the cipher
The number of computers available for the attack
The computational power of modern computers
The number of possible keys that exist for a given cipher
The time it takes to test all the keys on many computers

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