98 lines
2.6 KiB
Go
98 lines
2.6 KiB
Go
/*-
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* Copyright 2014 Square Inc.
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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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*/
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package josecipher
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import (
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"bytes"
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"crypto/ecdsa"
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"crypto/elliptic"
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"encoding/base64"
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"math/big"
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"testing"
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)
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// Example keys from JWA, Appendix C
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var aliceKey = &ecdsa.PrivateKey{
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PublicKey: ecdsa.PublicKey{
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Curve: elliptic.P256(),
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X: fromBase64Int("gI0GAILBdu7T53akrFmMyGcsF3n5dO7MmwNBHKW5SV0="),
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Y: fromBase64Int("SLW_xSffzlPWrHEVI30DHM_4egVwt3NQqeUD7nMFpps="),
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},
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D: fromBase64Int("0_NxaRPUMQoAJt50Gz8YiTr8gRTwyEaCumd-MToTmIo="),
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}
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var bobKey = &ecdsa.PrivateKey{
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PublicKey: ecdsa.PublicKey{
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Curve: elliptic.P256(),
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X: fromBase64Int("weNJy2HscCSM6AEDTDg04biOvhFhyyWvOHQfeF_PxMQ="),
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Y: fromBase64Int("e8lnCO-AlStT-NJVX-crhB7QRYhiix03illJOVAOyck="),
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},
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D: fromBase64Int("VEmDZpDXXK8p8N0Cndsxs924q6nS1RXFASRl6BfUqdw="),
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}
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// Build big int from base64-encoded string. Strips whitespace (for testing).
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func fromBase64Int(data string) *big.Int {
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val, err := base64.URLEncoding.DecodeString(data)
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if err != nil {
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panic("Invalid test data")
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}
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return new(big.Int).SetBytes(val)
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}
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func TestVectorECDHES(t *testing.T) {
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apuData := []byte("Alice")
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apvData := []byte("Bob")
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expected := []byte{
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86, 170, 141, 234, 248, 35, 109, 32, 92, 34, 40, 205, 113, 167, 16, 26}
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output := DeriveECDHES("A128GCM", apuData, apvData, bobKey, &aliceKey.PublicKey, 16)
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if bytes.Compare(output, expected) != 0 {
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t.Error("output did not match what we expect, got", output, "wanted", expected)
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}
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}
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func BenchmarkECDHES_128(b *testing.B) {
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apuData := []byte("APU")
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apvData := []byte("APV")
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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DeriveECDHES("ID", apuData, apvData, bobKey, &aliceKey.PublicKey, 16)
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}
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}
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func BenchmarkECDHES_192(b *testing.B) {
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apuData := []byte("APU")
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apvData := []byte("APV")
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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DeriveECDHES("ID", apuData, apvData, bobKey, &aliceKey.PublicKey, 24)
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}
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}
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func BenchmarkECDHES_256(b *testing.B) {
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apuData := []byte("APU")
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apvData := []byte("APV")
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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DeriveECDHES("ID", apuData, apvData, bobKey, &aliceKey.PublicKey, 32)
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}
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}
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