github.com/mtsmfm/go/src@v0.0.0-20221020090648-44bdcb9f8fde/crypto/rsa/boring_test.go (about)

     1  // Copyright 2017 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  //go:build boringcrypto
     6  
     7  // Note: Can run these tests against the non-BoringCrypto
     8  // version of the code by using "CGO_ENABLED=0 go test".
     9  
    10  package rsa
    11  
    12  import (
    13  	"crypto"
    14  	"crypto/rand"
    15  	"encoding/asn1"
    16  	"runtime"
    17  	"runtime/debug"
    18  	"sync"
    19  	"testing"
    20  )
    21  
    22  func TestBoringASN1Marshal(t *testing.T) {
    23  	k, err := GenerateKey(rand.Reader, 128)
    24  	if err != nil {
    25  		t.Fatal(err)
    26  	}
    27  	_, err = asn1.Marshal(k.PublicKey)
    28  	if err != nil {
    29  		t.Fatal(err)
    30  	}
    31  }
    32  
    33  func TestBoringVerify(t *testing.T) {
    34  	// Check that signatures that lack leading zeroes don't verify.
    35  	key := &PublicKey{
    36  		N: bigFromHex("c4fdf7b40a5477f206e6ee278eaef888ca73bf9128a9eef9f2f1ddb8b7b71a4c07cfa241f028a04edb405e4d916c61d6beabc333813dc7b484d2b3c52ee233c6a79b1eea4e9cc51596ba9cd5ac5aeb9df62d86ea051055b79d03f8a4fa9f38386f5bd17529138f3325d46801514ea9047977e0829ed728e68636802796801be1"),
    37  		E: 65537,
    38  	}
    39  
    40  	hash := fromHex("019c5571724fb5d0e47a4260c940e9803ba05a44")
    41  	paddedHash := fromHex("3021300906052b0e03021a05000414019c5571724fb5d0e47a4260c940e9803ba05a44")
    42  
    43  	// signature is one byte shorter than key.N.
    44  	sig := fromHex("5edfbeb6a73e7225ad3cc52724e2872e04260d7daf0d693c170d8c4b243b8767bc7785763533febc62ec2600c30603c433c095453ede59ff2fcabeb84ce32e0ed9d5cf15ffcbc816202b64370d4d77c1e9077d74e94a16fb4fa2e5bec23a56d7a73cf275f91691ae1801a976fcde09e981a2f6327ac27ea1fecf3185df0d56")
    45  
    46  	err := VerifyPKCS1v15(key, 0, paddedHash, sig)
    47  	if err == nil {
    48  		t.Errorf("raw: expected verification error")
    49  	}
    50  
    51  	err = VerifyPKCS1v15(key, crypto.SHA1, hash, sig)
    52  	if err == nil {
    53  		t.Errorf("sha1: expected verification error")
    54  	}
    55  }
    56  
    57  func BenchmarkBoringVerify(b *testing.B) {
    58  	// Check that signatures that lack leading zeroes don't verify.
    59  	key := &PublicKey{
    60  		N: bigFromHex("c4fdf7b40a5477f206e6ee278eaef888ca73bf9128a9eef9f2f1ddb8b7b71a4c07cfa241f028a04edb405e4d916c61d6beabc333813dc7b484d2b3c52ee233c6a79b1eea4e9cc51596ba9cd5ac5aeb9df62d86ea051055b79d03f8a4fa9f38386f5bd17529138f3325d46801514ea9047977e0829ed728e68636802796801be1"),
    61  		E: 65537,
    62  	}
    63  
    64  	hash := fromHex("019c5571724fb5d0e47a4260c940e9803ba05a44")
    65  
    66  	// signature is one byte shorter than key.N.
    67  	sig := fromHex("5edfbeb6a73e7225ad3cc52724e2872e04260d7daf0d693c170d8c4b243b8767bc7785763533febc62ec2600c30603c433c095453ede59ff2fcabeb84ce32e0ed9d5cf15ffcbc816202b64370d4d77c1e9077d74e94a16fb4fa2e5bec23a56d7a73cf275f91691ae1801a976fcde09e981a2f6327ac27ea1fecf3185df0d56")
    68  
    69  	b.ReportAllocs()
    70  
    71  	for i := 0; i < b.N; i++ {
    72  		err := VerifyPKCS1v15(key, crypto.SHA1, hash, sig)
    73  		if err == nil {
    74  			b.Fatalf("sha1: expected verification error")
    75  		}
    76  	}
    77  }
    78  
    79  func TestBoringGenerateKey(t *testing.T) {
    80  	k, err := GenerateKey(rand.Reader, 2048) // 2048 is smallest size BoringCrypto might kick in for
    81  	if err != nil {
    82  		t.Fatal(err)
    83  	}
    84  
    85  	// Non-Boring GenerateKey always sets CRTValues to a non-nil (possibly empty) slice.
    86  	if k.Precomputed.CRTValues == nil {
    87  		t.Fatalf("GenerateKey: Precomputed.CRTValues = nil")
    88  	}
    89  }
    90  
    91  func TestBoringFinalizers(t *testing.T) {
    92  	if runtime.GOOS == "nacl" || runtime.GOOS == "js" {
    93  		// Times out on nacl and js/wasm (without BoringCrypto)
    94  		// but not clear why - probably consuming rand.Reader too quickly
    95  		// and being throttled. Also doesn't really matter.
    96  		t.Skipf("skipping on %s/%s", runtime.GOOS, runtime.GOARCH)
    97  	}
    98  
    99  	k, err := GenerateKey(rand.Reader, 2048)
   100  	if err != nil {
   101  		t.Fatal(err)
   102  	}
   103  
   104  	// Run test with GOGC=10, to make bug more likely.
   105  	// Without the KeepAlives, the loop usually dies after
   106  	// about 30 iterations.
   107  	defer debug.SetGCPercent(debug.SetGCPercent(10))
   108  	for n := 0; n < 200; n++ {
   109  		// Clear the underlying BoringCrypto object cache.
   110  		privCache.Clear()
   111  
   112  		// Race to create the underlying BoringCrypto object.
   113  		// The ones that lose the race are prime candidates for
   114  		// being GC'ed too early if the finalizers are not being
   115  		// used correctly.
   116  		var wg sync.WaitGroup
   117  		for i := 0; i < 10; i++ {
   118  			wg.Add(1)
   119  			go func() {
   120  				defer wg.Done()
   121  				sum := make([]byte, 32)
   122  				_, err := SignPKCS1v15(rand.Reader, k, crypto.SHA256, sum)
   123  				if err != nil {
   124  					panic(err) // usually caused by memory corruption, so hard stop
   125  				}
   126  			}()
   127  		}
   128  		wg.Wait()
   129  	}
   130  }