QuestionQ197

Cryptography

What is the largest key size supported by the RC5 algorithm?

  • A 128 bits
  • B 256 bits
  • C 1024 bits
  • D 2040 bits
Explanation

RC5 supports variable-length keys up to 255 bytes. Since 255 bytes equals 2,040 bits, its maximum key size is 2,040 bits.

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