crypto_ror_u32
return crypto_ror_u32(x, 6) ^ crypto_ror_u32(x, 11) ^
crypto_ror_u32(x, 25);
return crypto_ror_u32(x, 7) ^ crypto_ror_u32(x, 18) ^ (x >> 3);
return crypto_ror_u32(x, 17) ^ crypto_ror_u32(x, 19) ^ (x >> 10);
return crypto_ror_u32(x, 2) ^ crypto_ror_u32(x, 13) ^
crypto_ror_u32(x, 22);