Study on the security of the extended version for the ISO/IEC international standardized block cipher SEED
In this paper, we analyze the block cipher SEED-192, which is an extended version of the ISO/IEC block cipher SEED. According to the result of this paper, there exist weak keys in 8 out of the 20 rounds of SEED-192 against related-key differential attacks, and there exist weak keys in 16 out of the 20 rounds of SEED-192 against related-key rectangle/boomerang attacks. This is the first cryptanalytic result for the key schedule of SEED-192. Copyright (c) 2012 John Wiley & Sons, Ltd.
block cipher seed-192 weak keys related-key differential rectangle boomerang