52 lines
1.5 KiB
Go
52 lines
1.5 KiB
Go
// Copyright 2020 The Matrix.org Foundation C.I.C.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package convert
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import (
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"bytes"
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"crypto/ed25519"
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"encoding/hex"
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"testing"
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"golang.org/x/crypto/curve25519"
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)
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func TestKeyConversion(t *testing.T) {
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edPub, edPriv, err := ed25519.GenerateKey(nil)
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if err != nil {
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t.Fatal(err)
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}
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t.Log("Signing public:", hex.EncodeToString(edPub))
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t.Log("Signing private:", hex.EncodeToString(edPriv))
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cuPriv := Ed25519PrivateKeyToCurve25519(edPriv)
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t.Log("Encryption private:", hex.EncodeToString(cuPriv))
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cuPub := Ed25519PublicKeyToCurve25519(edPub)
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t.Log("Converted encryption public:", hex.EncodeToString(cuPub))
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var realPub, realPriv [32]byte
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copy(realPriv[:32], cuPriv[:32])
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curve25519.ScalarBaseMult(&realPub, &realPriv)
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t.Log("Scalar-multed encryption public:", hex.EncodeToString(realPub[:]))
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if !bytes.Equal(realPriv[:], cuPriv[:]) {
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t.Fatal("Private keys should be equal (this means the test is broken)")
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}
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if !bytes.Equal(realPub[:], cuPub[:]) {
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t.Fatal("Public keys should be equal")
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}
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}
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