mirror of https://go.googlesource.com/go
149 lines
4.5 KiB
Go
149 lines
4.5 KiB
Go
// Copyright 2017 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build boringcrypto
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// Note: Can run these tests against the non-BoringCrypto
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// version of the code by using "CGO_ENABLED=0 go test".
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package rsa
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import (
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"crypto"
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"crypto/rand"
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"encoding/asn1"
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"encoding/hex"
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"math/big"
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"runtime"
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"runtime/debug"
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"sync"
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"testing"
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)
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func TestBoringASN1Marshal(t *testing.T) {
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k, err := GenerateKey(rand.Reader, 128)
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if err != nil {
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t.Fatal(err)
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}
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_, err = asn1.Marshal(k.PublicKey)
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if err != nil {
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t.Fatal(err)
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}
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}
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func TestBoringVerify(t *testing.T) {
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// Check that signatures that lack leading zeroes don't verify.
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key := &PublicKey{
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N: bigFromHex("c4fdf7b40a5477f206e6ee278eaef888ca73bf9128a9eef9f2f1ddb8b7b71a4c07cfa241f028a04edb405e4d916c61d6beabc333813dc7b484d2b3c52ee233c6a79b1eea4e9cc51596ba9cd5ac5aeb9df62d86ea051055b79d03f8a4fa9f38386f5bd17529138f3325d46801514ea9047977e0829ed728e68636802796801be1"),
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E: 65537,
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}
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hash := fromHex("019c5571724fb5d0e47a4260c940e9803ba05a44")
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paddedHash := fromHex("3021300906052b0e03021a05000414019c5571724fb5d0e47a4260c940e9803ba05a44")
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// signature is one byte shorter than key.N.
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sig := fromHex("5edfbeb6a73e7225ad3cc52724e2872e04260d7daf0d693c170d8c4b243b8767bc7785763533febc62ec2600c30603c433c095453ede59ff2fcabeb84ce32e0ed9d5cf15ffcbc816202b64370d4d77c1e9077d74e94a16fb4fa2e5bec23a56d7a73cf275f91691ae1801a976fcde09e981a2f6327ac27ea1fecf3185df0d56")
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err := VerifyPKCS1v15(key, 0, paddedHash, sig)
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if err == nil {
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t.Errorf("raw: expected verification error")
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}
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err = VerifyPKCS1v15(key, crypto.SHA1, hash, sig)
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if err == nil {
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t.Errorf("sha1: expected verification error")
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}
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}
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func BenchmarkBoringVerify(b *testing.B) {
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// Check that signatures that lack leading zeroes don't verify.
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key := &PublicKey{
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N: bigFromHex("c4fdf7b40a5477f206e6ee278eaef888ca73bf9128a9eef9f2f1ddb8b7b71a4c07cfa241f028a04edb405e4d916c61d6beabc333813dc7b484d2b3c52ee233c6a79b1eea4e9cc51596ba9cd5ac5aeb9df62d86ea051055b79d03f8a4fa9f38386f5bd17529138f3325d46801514ea9047977e0829ed728e68636802796801be1"),
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E: 65537,
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}
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hash := fromHex("019c5571724fb5d0e47a4260c940e9803ba05a44")
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// signature is one byte shorter than key.N.
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sig := fromHex("5edfbeb6a73e7225ad3cc52724e2872e04260d7daf0d693c170d8c4b243b8767bc7785763533febc62ec2600c30603c433c095453ede59ff2fcabeb84ce32e0ed9d5cf15ffcbc816202b64370d4d77c1e9077d74e94a16fb4fa2e5bec23a56d7a73cf275f91691ae1801a976fcde09e981a2f6327ac27ea1fecf3185df0d56")
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b.ReportAllocs()
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for i := 0; i < b.N; i++ {
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err := VerifyPKCS1v15(key, crypto.SHA1, hash, sig)
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if err == nil {
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b.Fatalf("sha1: expected verification error")
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}
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}
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}
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func TestBoringGenerateKey(t *testing.T) {
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k, err := GenerateKey(rand.Reader, 2048) // 2048 is smallest size BoringCrypto might kick in for
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if err != nil {
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t.Fatal(err)
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}
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// Non-Boring GenerateKey always sets CRTValues to a non-nil (possibly empty) slice.
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if k.Precomputed.CRTValues == nil {
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t.Fatalf("GenerateKey: Precomputed.CRTValues = nil")
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}
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}
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func TestBoringFinalizers(t *testing.T) {
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if runtime.GOOS == "nacl" || runtime.GOOS == "js" {
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// Times out on nacl and js/wasm (without BoringCrypto)
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// but not clear why - probably consuming rand.Reader too quickly
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// and being throttled. Also doesn't really matter.
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t.Skipf("skipping on %s/%s", runtime.GOOS, runtime.GOARCH)
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}
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k, err := GenerateKey(rand.Reader, 2048)
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if err != nil {
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t.Fatal(err)
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}
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// Run test with GOGC=10, to make bug more likely.
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// Without the KeepAlives, the loop usually dies after
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// about 30 iterations.
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defer debug.SetGCPercent(debug.SetGCPercent(10))
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for n := 0; n < 200; n++ {
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// Clear the underlying BoringCrypto object cache.
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privCache.Clear()
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// Race to create the underlying BoringCrypto object.
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// The ones that lose the race are prime candidates for
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// being GC'ed too early if the finalizers are not being
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// used correctly.
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var wg sync.WaitGroup
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for i := 0; i < 10; i++ {
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wg.Add(1)
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go func() {
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defer wg.Done()
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sum := make([]byte, 32)
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_, err := SignPKCS1v15(rand.Reader, k, crypto.SHA256, sum)
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if err != nil {
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panic(err) // usually caused by memory corruption, so hard stop
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}
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}()
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}
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wg.Wait()
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}
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}
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func bigFromHex(hex string) *big.Int {
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n, ok := new(big.Int).SetString(hex, 16)
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if !ok {
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panic("bad hex: " + hex)
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}
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return n
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}
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func fromHex(hexStr string) []byte {
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s, err := hex.DecodeString(hexStr)
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if err != nil {
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panic(err)
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}
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return s
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}
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