Bug[ring]: ´ring.UniformSampler´ bad sampling

[Pro7ech]

The following code should produce polynomials with independent and identically distributed coefficients but ends up producing polynomials with overlapping coefficients:

package main


import(
	"fmt"
	"github.com/tuneinsight/lattigo/v5/core/rlwe"
	"github.com/tuneinsight/lattigo/v5/utils/sampling"
	"github.com/tuneinsight/lattigo/v5/ring"
)

func main(){
	params, err := rlwe.NewParametersFromLiteral(rlwe.ParametersLiteral{
		LogN: 10,
		LogQ: []int{50},
	})

	if err != nil{
		panic(err)
	}

	prng, _ := sampling.NewKeyedPRNG([]byte{0x02})
	uniform := ring.NewUniformSampler(prng, params.RingQ())
	_ = uniform.ReadNew()

	a0 := uniform.AtLevel(0).ReadNew()
	a1 := uniform.AtLevel(0).ReadNew()

	m := map[uint64]int{}
	for i, v := range a0.Coeffs[0]{
		m[v] = i
	}

	for i, v := range a1.Coeffs[0]{
		if j, ok := m[v]; ok{
			fmt.Println(a0.Coeffs[0][j:j+8])
			fmt.Println(a1.Coeffs[0][i:i+8])
			break
		}
	}
}