diff options
Diffstat (limited to 'src/crypto/rsa/boring_test.go')
-rw-r--r-- | src/crypto/rsa/boring_test.go | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/src/crypto/rsa/boring_test.go b/src/crypto/rsa/boring_test.go new file mode 100644 index 0000000000..11dcdf88fd --- /dev/null +++ b/src/crypto/rsa/boring_test.go @@ -0,0 +1,125 @@ +// Copyright 2017 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Note: Can run these tests against the non-BoringCrypto +// version of the code by using "CGO_ENABLED=0 go test". + +package rsa + +import ( + "crypto" + "crypto/rand" + "encoding/asn1" + "reflect" + "runtime" + "runtime/debug" + "sync" + "sync/atomic" + "testing" + "unsafe" +) + +func TestBoringASN1Marshal(t *testing.T) { + k, err := GenerateKey(rand.Reader, 128) + if err != nil { + t.Fatal(err) + } + // This used to fail, because of the unexported 'boring' field. + // Now the compiler hides it [sic]. + _, err = asn1.Marshal(k.PublicKey) + if err != nil { + t.Fatal(err) + } +} + +func TestBoringDeepEqual(t *testing.T) { + k, err := GenerateKey(rand.Reader, 128) + if err != nil { + t.Fatal(err) + } + k.boring = nil // probably nil already but just in case + k2 := *k + k2.boring = unsafe.Pointer(k) // anything not nil, for this test + if !reflect.DeepEqual(k, &k2) { + // compiler should be hiding the boring field from reflection + t.Fatalf("DeepEqual compared boring fields") + } +} + +func TestBoringVerify(t *testing.T) { + // Check that signatures that lack leading zeroes don't verify. + key := &PublicKey{ + N: bigFromHex("c4fdf7b40a5477f206e6ee278eaef888ca73bf9128a9eef9f2f1ddb8b7b71a4c07cfa241f028a04edb405e4d916c61d6beabc333813dc7b484d2b3c52ee233c6a79b1eea4e9cc51596ba9cd5ac5aeb9df62d86ea051055b79d03f8a4fa9f38386f5bd17529138f3325d46801514ea9047977e0829ed728e68636802796801be1"), + E: 65537, + } + + hash := fromHex("019c5571724fb5d0e47a4260c940e9803ba05a44") + paddedHash := fromHex("3021300906052b0e03021a05000414019c5571724fb5d0e47a4260c940e9803ba05a44") + + // signature is one byte shorter than key.N. + sig := fromHex("5edfbeb6a73e7225ad3cc52724e2872e04260d7daf0d693c170d8c4b243b8767bc7785763533febc62ec2600c30603c433c095453ede59ff2fcabeb84ce32e0ed9d5cf15ffcbc816202b64370d4d77c1e9077d74e94a16fb4fa2e5bec23a56d7a73cf275f91691ae1801a976fcde09e981a2f6327ac27ea1fecf3185df0d56") + + err := VerifyPKCS1v15(key, 0, paddedHash, sig) + if err == nil { + t.Errorf("raw: expected verification error") + } + + err = VerifyPKCS1v15(key, crypto.SHA1, hash, sig) + if err == nil { + t.Errorf("sha1: expected verification error") + } +} + +func TestBoringGenerateKey(t *testing.T) { + k, err := GenerateKey(rand.Reader, 2048) // 2048 is smallest size BoringCrypto might kick in for + if err != nil { + t.Fatal(err) + } + + // Non-Boring GenerateKey always sets CRTValues to a non-nil (possibly empty) slice. + if k.Precomputed.CRTValues == nil { + t.Fatalf("GenerateKey: Precomputed.CRTValues = nil") + } +} + +func TestBoringFinalizers(t *testing.T) { + if runtime.GOOS == "nacl" || runtime.GOOS == "js" { + // Times out on nacl and js/wasm (without BoringCrypto) + // but not clear why - probably consuming rand.Reader too quickly + // and being throttled. Also doesn't really matter. + t.Skipf("skipping on %s/%s", runtime.GOOS, runtime.GOARCH) + } + + k, err := GenerateKey(rand.Reader, 2048) + if err != nil { + t.Fatal(err) + } + + // Run test with GOGC=10, to make bug more likely. + // Without the KeepAlives, the loop usually dies after + // about 30 iterations. + defer debug.SetGCPercent(debug.SetGCPercent(10)) + for n := 0; n < 200; n++ { + // Clear the underlying BoringCrypto object. + atomic.StorePointer(&k.boring, nil) + + // Race to create the underlying BoringCrypto object. + // The ones that lose the race are prime candidates for + // being GC'ed too early if the finalizers are not being + // used correctly. + var wg sync.WaitGroup + for i := 0; i < 10; i++ { + wg.Add(1) + go func() { + defer wg.Done() + sum := make([]byte, 32) + _, err := SignPKCS1v15(rand.Reader, k, crypto.SHA256, sum) + if err != nil { + panic(err) // usually caused by memory corruption, so hard stop + } + }() + } + wg.Wait() + } +} |