Question:
What is the size of the key in the DES algorithm for security?
What is the size of the key in the DES algorithm for security?
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DES key length = 56 bits (actual), though total block size = 64 bits.
Updated On: June 02, 2025
- 32 bits
- 30 bytes
- 56 bits
- 64 bytes
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The Correct Option is C
Solution and Explanation
Data Encryption Standard (DES) uses a 56-bit key for encryption.
Although the key block is 64 bits, 8 bits are used for parity, leaving an effective key length of 56 bits.
Although the key block is 64 bits, 8 bits are used for parity, leaving an effective key length of 56 bits.
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