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crypto/tss/eddsa: add some tests #180

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138 changes: 88 additions & 50 deletions crypto/tss/eddsa/frost/signer/signer_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,7 @@ import (
"github.com/getamis/alice/crypto/birkhoffinterpolation"
"github.com/getamis/alice/crypto/ecpointgrouplaw"
"github.com/getamis/alice/crypto/elliptic"
"github.com/getamis/alice/crypto/polynomial"
"github.com/getamis/alice/crypto/tss"
"github.com/getamis/alice/crypto/utils"
"github.com/getamis/alice/internal/message/types"
Expand All @@ -38,83 +39,120 @@ func TestSigner(t *testing.T) {

var _ = Describe("Signer", func() {
var (
curve = elliptic.Ed25519()
)
RumTime = 20
curve = elliptic.Ed25519()
poly, _ = polynomial.RandomPolynomial(curve.Params().N, 2)
x1, _ = utils.RandomPositiveInt(curve.Params().N)
x2, _ = utils.RandomPositiveInt(curve.Params().N)
x3, _ = utils.RandomPositiveInt(curve.Params().N)
share1 = poly.Evaluate(x1)
share2 = poly.Evaluate(x2)
share3 = poly.Evaluate(x3)
secrertRandomKey = poly.Evaluate(big0)

DescribeTable("It should be OK", func(ss [][]*big.Int, privateKey *big.Int) {
expPublic := ecpointgrouplaw.ScalarBaseMult(curve, privateKey)
threshold := len(ss)
message := []byte("8077818")
signers, listeners := newSigners(curve, expPublic, ss, message)
doneChs := make([]chan struct{}, threshold)
i := 0
for _, l := range listeners {
doneChs[i] = make(chan struct{})
doneCh := doneChs[i]
l.On("OnStateChanged", types.StateInit, types.StateDone).Run(func(args mock.Arguments) {
close(doneCh)
}).Once()
i++
}
setx1, _ = new(big.Int).SetString("2254765913981550676205803762478430869696580688700958727495894224115312987764", 10)
setx2, _ = new(big.Int).SetString("2117636074604900758115075527580492494720639688970891834155177238392086845382", 10)
setx3, _ = new(big.Int).SetString("6414582964050248729324272790247195316284712038021768098875147472012178712076", 10)
setShare1, _ = new(big.Int).SetString("3675788498585450082991846428007326057826754636663877385528274415846839676857", 10)
setShare2, _ = new(big.Int).SetString("1522795425006476177538987458185716386773973361216994141828318603466392185301", 10)
setShare3, _ = new(big.Int).SetString("4575846830523611786637644129807785488887694553004765055615792711279484061401", 10)
xcoord1, _ = new(big.Int).SetString("13303072567237052328013834338380099174471808636153533034015575804719580433195", 10)
ycoord1, _ = new(big.Int).SetString("16964052623936448625187294284159857344364737590067812676140890490183700057118", 10)
pubKey, _ = ecpointgrouplaw.NewECPoint(curve, xcoord1, ycoord1)
)

for _, s := range signers {
s.Start()
}
DescribeTable("It should be OK", func(ss [][]*big.Int, privateKey *big.Int, pubKey *ecpointgrouplaw.ECPoint) {
for i := 0; i < RumTime; i++ {
expPublic := pubKey
if privateKey != nil {
expPublic = ecpointgrouplaw.ScalarBaseMult(curve, privateKey)
}
threshold := len(ss)
message := []byte("8077818")
signers, listeners := newSigners(curve, expPublic, ss, message)
doneChs := make([]chan struct{}, threshold)
i := 0
for _, l := range listeners {
doneChs[i] = make(chan struct{})
doneCh := doneChs[i]
l.On("OnStateChanged", types.StateInit, types.StateDone).Run(func(args mock.Arguments) {
close(doneCh)
}).Once()
i++
}

for i := 0; i < threshold; i++ {
<-doneChs[i]
}
for _, s := range signers {
s.Start()
}

// Build public key
var R *ecpointgrouplaw.ECPoint
var s *big.Int
for _, signer := range signers {
signer.Stop()
result, err := signer.GetResult()
Expect(err).Should(BeNil())
// All R and S should be the same
if R != nil {
Expect(R.Equal(result.R)).Should(BeTrue())
Expect(s).Should(Equal(result.S))
} else {
R = result.R
s = result.S
for i := 0; i < threshold; i++ {
<-doneChs[i]
}
}
edwardPubKey := edwards.NewPublicKey(edwards.Edwards(), expPublic.GetX(), expPublic.GetY())
test1 := ecpointEncoding(R)
test2 := *test1
r := new(big.Int).SetBytes(utils.ReverseByte(test2[:]))

Expect(edwards.Verify(edwardPubKey, message, r, s)).Should(BeTrue())
for _, l := range listeners {
l.AssertExpectations(GinkgoT())
// Build public key
var R *ecpointgrouplaw.ECPoint
var s *big.Int
for _, signer := range signers {
signer.Stop()
result, err := signer.GetResult()
Expect(err).Should(BeNil())
// All R and S should be the same
if R != nil {
Expect(R.Equal(result.R)).Should(BeTrue())
Expect(s).Should(Equal(result.S))
} else {
R = result.R
s = result.S
}
}
edwardPubKey := edwards.NewPublicKey(edwards.Edwards(), expPublic.GetX(), expPublic.GetY())
test1 := ecpointEncoding(R)
test2 := *test1
r := new(big.Int).SetBytes(utils.ReverseByte(test2[:]))
verifyResult := edwards.Verify(edwardPubKey, message, r, s)
Expect(verifyResult).Should(BeTrue())
if !verifyResult {
break
}
for _, l := range listeners {
l.AssertExpectations(GinkgoT())
}
}
},
Entry("(x-cooord, share, rank):f(x) = 2x+100", [][]*big.Int{
{big.NewInt(1), big.NewInt(102), big.NewInt(0)},
{big.NewInt(2), big.NewInt(104), big.NewInt(0)},
{big.NewInt(8), big.NewInt(116), big.NewInt(0)},
}, big.NewInt(100)),
}, big.NewInt(100), nil),
Entry("(x-cooord, share, rank):f(x) = 2x+100", [][]*big.Int{
{big.NewInt(1), big.NewInt(102), big.NewInt(0)},
{big.NewInt(2), big.NewInt(104), big.NewInt(0)},
}, big.NewInt(100)),
}, big.NewInt(100), nil),
Entry("(x-cooord, share, rank):f(x) = x^2+5*x+1109", [][]*big.Int{
{big.NewInt(1), big.NewInt(1115), big.NewInt(0)},
{big.NewInt(2), big.NewInt(1123), big.NewInt(0)},
{big.NewInt(50), big.NewInt(3859), big.NewInt(0)},
}, big.NewInt(1109)),
}, big.NewInt(1109), nil),
Entry("(x-cooord, share, rank):f(x) = x^2+3*x+5555", [][]*big.Int{
{big.NewInt(1), big.NewInt(5559), big.NewInt(0)},
{big.NewInt(2), big.NewInt(5565), big.NewInt(0)},
{big.NewInt(50), big.NewInt(103), big.NewInt(1)},
}, big.NewInt(5555)),
}, big.NewInt(5555), nil),
Entry("(x-cooord, share, rank):f(x) = 2*x^2+3*x+1111", [][]*big.Int{
{big.NewInt(1), big.NewInt(1116), big.NewInt(0)},
{big.NewInt(2), big.NewInt(4), big.NewInt(2)},
{big.NewInt(50), big.NewInt(203), big.NewInt(1)},
}, big.NewInt(1111)),
}, big.NewInt(1111), nil),
Entry("(x-cooord, share, rank):f(x) = random", [][]*big.Int{
{x1, share1, big.NewInt(0)},
{x2, share2, big.NewInt(0)},
{x3, share3, big.NewInt(0)},
}, secrertRandomKey, nil),
Entry("(x-cooord, share, rank):", [][]*big.Int{
{setx1, setShare1, big.NewInt(0)},
{setx2, setShare2, big.NewInt(0)},
{setx3, setShare3, big.NewInt(0)},
}, nil, pubKey),
)
})

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