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What is the Seed length (seedlen) length for AES-192 ?

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What is the Seed length (seedlen) length for AES-192 ?

(a) 428

(b) 384

(c) 320

(d) 512

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I'd like to ask this question from Pseudorandom Number Generators and Stream Ciphers in portion Pseudorandom Number Generation and Stream Ciphers and More Block Ciphers of Cryptograph & Network Security

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Correct option is (c) 320

The best explanation: Seed length = Output Block Length + Key Length = 128 + 192.

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