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by floody-berry
4135 days ago
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When Rijndael was chosen as AES, it was ~3 years old and was broken for 6-7 rounds out of 10 with 128 bit keys, and 7-8 rounds out of 14 with 256 bit keys. Chacha20 is 7 years old now and is broken for 7 rounds out of 20, with the attacks on BLAKE/BLAKE2 holding up that margin. You should be very comfortable with Chacha20! |
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