Questions tagged [fortuna]

Fortuna is a family of cryptographically secure PRNGs; devised by Bruce Schneier and Niels Ferguson, who published it in 2003.

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Fortuna PRNG: What is the effect of the block cipher key size?

The Fortuna PRNG uses AES-256 for generating output blocks by encrypting a counter value $C$ in CTR mode using a 256-bit key $K$. For the analysis, it seems the block size of 128 is the limiting ...