Table 1 Comparison of attack complexities.

From: A new distinguishing attack on reduced round ChaCha permutation

Rounds

Attack type

Time

Data

Memory

Works

7

Distinguisher

\(2^{224}\)

\(2^{224}\)

0

Eurocrypt 202124

\(2^{214}\)

\(2^{214}\)

0

Asiacrypt 202227

\(2^{207}\)

\(2^{207}\)

0

“Distinguisher for 7 rounds ChaCha permutation” section

7.25

Distinguisher

\(2^{231}\)

\(2^{231}\)

0

“Distinguisher for 7.25 rounds ChaCha permutation” section

Back to article page