github.com/ebceco/ebc@v1.8.19-0.20190309150932-8cb0b9e06484/crypto/bn256/cloudflare/gfp_test.go (about)

     1  package bn256
     2  
     3  import (
     4  	"testing"
     5  )
     6  
     7  // Tests that negation works the same way on both assembly-optimized and pure Go
     8  // implementation.
     9  func TestGFpNeg(t *testing.T) {
    10  	n := &gfP{0x0123456789abcdef, 0xfedcba9876543210, 0xdeadbeefdeadbeef, 0xfeebdaedfeebdaed}
    11  	w := &gfP{0xfedcba9876543211, 0x0123456789abcdef, 0x2152411021524110, 0x0114251201142512}
    12  	h := &gfP{}
    13  
    14  	gfpNeg(h, n)
    15  	if *h != *w {
    16  		t.Errorf("negation mismatch: have %#x, want %#x", *h, *w)
    17  	}
    18  }
    19  
    20  // Tests that addition works the same way on both assembly-optimized and pure Go
    21  // implementation.
    22  func TestGFpAdd(t *testing.T) {
    23  	a := &gfP{0x0123456789abcdef, 0xfedcba9876543210, 0xdeadbeefdeadbeef, 0xfeebdaedfeebdaed}
    24  	b := &gfP{0xfedcba9876543210, 0x0123456789abcdef, 0xfeebdaedfeebdaed, 0xdeadbeefdeadbeef}
    25  	w := &gfP{0xc3df73e9278302b8, 0x687e956e978e3572, 0x254954275c18417f, 0xad354b6afc67f9b4}
    26  	h := &gfP{}
    27  
    28  	gfpAdd(h, a, b)
    29  	if *h != *w {
    30  		t.Errorf("addition mismatch: have %#x, want %#x", *h, *w)
    31  	}
    32  }
    33  
    34  // Tests that subtraction works the same way on both assembly-optimized and pure Go
    35  // implementation.
    36  func TestGFpSub(t *testing.T) {
    37  	a := &gfP{0x0123456789abcdef, 0xfedcba9876543210, 0xdeadbeefdeadbeef, 0xfeebdaedfeebdaed}
    38  	b := &gfP{0xfedcba9876543210, 0x0123456789abcdef, 0xfeebdaedfeebdaed, 0xdeadbeefdeadbeef}
    39  	w := &gfP{0x02468acf13579bdf, 0xfdb97530eca86420, 0xdfc1e401dfc1e402, 0x203e1bfe203e1bfd}
    40  	h := &gfP{}
    41  
    42  	gfpSub(h, a, b)
    43  	if *h != *w {
    44  		t.Errorf("subtraction mismatch: have %#x, want %#x", *h, *w)
    45  	}
    46  }
    47  
    48  // Tests that multiplication works the same way on both assembly-optimized and pure Go
    49  // implementation.
    50  func TestGFpMul(t *testing.T) {
    51  	a := &gfP{0x0123456789abcdef, 0xfedcba9876543210, 0xdeadbeefdeadbeef, 0xfeebdaedfeebdaed}
    52  	b := &gfP{0xfedcba9876543210, 0x0123456789abcdef, 0xfeebdaedfeebdaed, 0xdeadbeefdeadbeef}
    53  	w := &gfP{0xcbcbd377f7ad22d3, 0x3b89ba5d849379bf, 0x87b61627bd38b6d2, 0xc44052a2a0e654b2}
    54  	h := &gfP{}
    55  
    56  	gfpMul(h, a, b)
    57  	if *h != *w {
    58  		t.Errorf("multiplication mismatch: have %#x, want %#x", *h, *w)
    59  	}
    60  }