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Prad Nukala
2024-07-06 00:34:41 -04:00
committed by Prad Nukala (aider)
parent 5fd43dfd6b
commit 2f976209db
345 changed files with 409 additions and 72177 deletions
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crypto/signatures/bbs/blind_signature_context_test.go
-98
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@@ -1,98 +0,0 @@
//
// Copyright Coinbase, Inc. All Rights Reserved.
//
// SPDX-License-Identifier: Apache-2.0
//
package bbs
import (
crand "crypto/rand"
"testing"
"github.com/stretchr/testify/require"
"github.com/onsonr/hway/crypto/core/curves"
)
func TestBlindSignatureContext(t *testing.T) {
curve := curves.BLS12381(&curves.PointBls12381G2{})
pk, sk, err := NewKeys(curve)
require.NoError(t, err)
require.NotNil(t, pk)
require.NotNil(t, sk)
generators, err := new(MessageGenerators).Init(pk, 4)
require.NoError(t, err)
nonce := curve.Scalar.Random(crand.Reader)
msgs := make(map[int]curves.Scalar, 1)
msgs[0] = curve.Scalar.Hash([]byte("identifier"))
ctx, blinding, err := NewBlindSignatureContext(curve, msgs, generators, nonce, crand.Reader)
require.NoError(t, err)
require.NotNil(t, blinding)
require.False(t, blinding.IsZero())
require.NotNil(t, ctx)
require.False(t, ctx.commitment.IsIdentity())
require.False(t, ctx.challenge.IsZero())
for _, p := range ctx.proofs {
require.False(t, p.IsZero())
}
delete(msgs, 0)
msgs[1] = curve.Scalar.Hash([]byte("firstname"))
msgs[2] = curve.Scalar.Hash([]byte("lastname"))
msgs[3] = curve.Scalar.Hash([]byte("age"))
blindSig, err := ctx.ToBlindSignature(msgs, sk, generators, nonce)
require.NoError(t, err)
require.NotNil(t, blindSig)
require.False(t, blindSig.a.IsIdentity())
require.False(t, blindSig.e.IsZero())
require.False(t, blindSig.s.IsZero())
sig := blindSig.ToUnblinded(blinding)
msgs[0] = curve.Scalar.Hash([]byte("identifier"))
var sigMsgs [4]curves.Scalar
for i := 0; i < 4; i++ {
sigMsgs[i] = msgs[i]
}
err = pk.Verify(sig, generators, sigMsgs[:])
require.NoError(t, err)
}
func TestBlindSignatureContextMarshalBinary(t *testing.T) {
curve := curves.BLS12381(&curves.PointBls12381G2{})
pk, sk, err := NewKeys(curve)
require.NoError(t, err)
require.NotNil(t, pk)
require.NotNil(t, sk)
generators, err := new(MessageGenerators).Init(pk, 4)
require.NoError(t, err)
nonce := curve.Scalar.Random(crand.Reader)
msgs := make(map[int]curves.Scalar, 1)
msgs[0] = curve.Scalar.Hash([]byte("identifier"))
ctx, blinding, err := NewBlindSignatureContext(curve, msgs, generators, nonce, crand.Reader)
require.NoError(t, err)
require.NotNil(t, blinding)
require.False(t, blinding.IsZero())
require.NotNil(t, ctx)
require.False(t, ctx.commitment.IsIdentity())
require.False(t, ctx.challenge.IsZero())
for _, p := range ctx.proofs {
require.False(t, p.IsZero())
}
data, err := ctx.MarshalBinary()
require.NoError(t, err)
require.NotNil(t, data)
ctx2 := new(BlindSignatureContext).Init(curve)
err = ctx2.UnmarshalBinary(data)
require.NoError(t, err)
require.Equal(t, ctx.challenge.Cmp(ctx2.challenge), 0)
require.True(t, ctx.commitment.Equal(ctx2.commitment))
require.Equal(t, len(ctx.proofs), len(ctx2.proofs))
for i, p := range ctx.proofs {
require.Equal(t, p.Cmp(ctx2.proofs[i]), 0)
}
}