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SSCP · Question #1114

So far, no one has been able to crack the IDEA algorithm with Brute Force.

The correct answer is A. True. The International Data Encryption Algorithm (IDEA), with its 128-bit key, remains computationally secure against brute-force attacks.

Submitted by ahmad_uae· Apr 18, 2026Cryptography

Question

So far, no one has been able to crack the IDEA algorithm with Brute Force.

Options

  • ATrue
  • BFalse

How the community answered

(46 responses)
  • A
    87% (40)
  • B
    13% (6)

Why each option

The International Data Encryption Algorithm (IDEA), with its 128-bit key, remains computationally secure against brute-force attacks.

ATrueCorrect

The International Data Encryption Algorithm (IDEA), with its 128-bit key, is considered to be very strong. As of current knowledge, it has not been successfully cracked by brute-force methods, meaning that trying every possible key is still computationally infeasible.

BFalse

This statement is false because the IDEA algorithm has maintained its resistance to brute-force attacks since its inception.

Concept tested: Strength of cryptographic algorithms (IDEA)

Topics

#IDEA algorithm#Brute-force attacks#Symmetric encryption

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