github.com/yinchengtsinghua/golang-Eos-dpos-Ethereum@v0.0.0-20190121132951-92cc4225ed8e/crypto/bn256/cloudflare/lattice_test.go (about)

     1  
     2  //此源码被清华学神尹成大魔王专业翻译分析并修改
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     9  package bn256
    10  
    11  import (
    12  	"crypto/rand"
    13  
    14  	"testing"
    15  )
    16  
    17  func TestLatticeReduceCurve(t *testing.T) {
    18  	k, _ := rand.Int(rand.Reader, Order)
    19  	ks := curveLattice.decompose(k)
    20  
    21  	if ks[0].BitLen() > 130 || ks[1].BitLen() > 130 {
    22  		t.Fatal("reduction too large")
    23  	} else if ks[0].Sign() < 0 || ks[1].Sign() < 0 {
    24  		t.Fatal("reduction must be positive")
    25  	}
    26  }
    27  
    28  func TestLatticeReduceTarget(t *testing.T) {
    29  	k, _ := rand.Int(rand.Reader, Order)
    30  	ks := targetLattice.decompose(k)
    31  
    32  	if ks[0].BitLen() > 66 || ks[1].BitLen() > 66 || ks[2].BitLen() > 66 || ks[3].BitLen() > 66 {
    33  		t.Fatal("reduction too large")
    34  	} else if ks[0].Sign() < 0 || ks[1].Sign() < 0 || ks[2].Sign() < 0 || ks[3].Sign() < 0 {
    35  		t.Fatal("reduction must be positive")
    36  	}
    37  }