Not sure why it is obvious, especially after Alex Biryukov et al reverse engineered S-Boxes of Streebog and Kuznyechik [1].
If you suspect Dual_EC_DRBG kind of weakness, why not use some algorithm without magic constants like Speck [2]?
[1] https://eprint.iacr.org/2016/071.pdf
[2] http://eprint.iacr.org/2013/404.pdf
Not sure why it is obvious, especially after Alex Biryukov et al reverse engineered S-Boxes of Streebog and Kuznyechik [1].
If you suspect Dual_EC_DRBG kind of weakness, why not use some algorithm without magic constants like Speck [2]?
[1] https://eprint.iacr.org/2016/071.pdf
[2] http://eprint.iacr.org/2013/404.pdf