mirror of
https://source.quilibrium.com/quilibrium/ceremonyclient.git
synced 2024-12-27 00:55:17 +00:00
99 lines
2.9 KiB
Go
99 lines
2.9 KiB
Go
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//
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// Copyright Coinbase, Inc. All Rights Reserved.
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//
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// SPDX-License-Identifier: Apache-2.0
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//
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package bbs
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import (
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crand "crypto/rand"
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"testing"
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"github.com/stretchr/testify/require"
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"source.quilibrium.com/quilibrium/monorepo/nekryptology/pkg/core/curves"
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)
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func TestBlindSignatureContext(t *testing.T) {
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curve := curves.BLS12381(&curves.PointBls12381G2{})
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pk, sk, err := NewKeys(curve)
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require.NoError(t, err)
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require.NotNil(t, pk)
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require.NotNil(t, sk)
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generators, err := new(MessageGenerators).Init(pk, 4)
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require.NoError(t, err)
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nonce := curve.Scalar.Random(crand.Reader)
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msgs := make(map[int]curves.Scalar, 1)
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msgs[0] = curve.Scalar.Hash([]byte("identifier"))
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ctx, blinding, err := NewBlindSignatureContext(curve, msgs, generators, nonce, crand.Reader)
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require.NoError(t, err)
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require.NotNil(t, blinding)
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require.False(t, blinding.IsZero())
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require.NotNil(t, ctx)
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require.False(t, ctx.commitment.IsIdentity())
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require.False(t, ctx.challenge.IsZero())
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for _, p := range ctx.proofs {
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require.False(t, p.IsZero())
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}
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delete(msgs, 0)
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msgs[1] = curve.Scalar.Hash([]byte("firstname"))
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msgs[2] = curve.Scalar.Hash([]byte("lastname"))
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msgs[3] = curve.Scalar.Hash([]byte("age"))
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blindSig, err := ctx.ToBlindSignature(msgs, sk, generators, nonce)
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require.NoError(t, err)
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require.NotNil(t, blindSig)
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require.False(t, blindSig.a.IsIdentity())
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require.False(t, blindSig.e.IsZero())
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require.False(t, blindSig.s.IsZero())
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sig := blindSig.ToUnblinded(blinding)
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msgs[0] = curve.Scalar.Hash([]byte("identifier"))
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var sigMsgs [4]curves.Scalar
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for i := 0; i < 4; i++ {
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sigMsgs[i] = msgs[i]
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}
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err = pk.Verify(sig, generators, sigMsgs[:])
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require.NoError(t, err)
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}
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func TestBlindSignatureContextMarshalBinary(t *testing.T) {
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curve := curves.BLS12381(&curves.PointBls12381G2{})
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pk, sk, err := NewKeys(curve)
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require.NoError(t, err)
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require.NotNil(t, pk)
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require.NotNil(t, sk)
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generators, err := new(MessageGenerators).Init(pk, 4)
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require.NoError(t, err)
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nonce := curve.Scalar.Random(crand.Reader)
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msgs := make(map[int]curves.Scalar, 1)
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msgs[0] = curve.Scalar.Hash([]byte("identifier"))
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ctx, blinding, err := NewBlindSignatureContext(curve, msgs, generators, nonce, crand.Reader)
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require.NoError(t, err)
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require.NotNil(t, blinding)
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require.False(t, blinding.IsZero())
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require.NotNil(t, ctx)
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require.False(t, ctx.commitment.IsIdentity())
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require.False(t, ctx.challenge.IsZero())
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for _, p := range ctx.proofs {
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require.False(t, p.IsZero())
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}
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data, err := ctx.MarshalBinary()
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require.NoError(t, err)
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require.NotNil(t, data)
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ctx2 := new(BlindSignatureContext).Init(curve)
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err = ctx2.UnmarshalBinary(data)
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require.NoError(t, err)
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require.Equal(t, ctx.challenge.Cmp(ctx2.challenge), 0)
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require.True(t, ctx.commitment.Equal(ctx2.commitment))
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require.Equal(t, len(ctx.proofs), len(ctx2.proofs))
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for i, p := range ctx.proofs {
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require.Equal(t, p.Cmp(ctx2.proofs[i]), 0)
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}
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}
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