github.com/rsc/go@v0.0.0-20150416155037-e040fd465409/src/crypto/x509/x509_test.go (about)

     1  // Copyright 2009 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  package x509
     6  
     7  import (
     8  	"bytes"
     9  	"crypto/dsa"
    10  	"crypto/ecdsa"
    11  	"crypto/elliptic"
    12  	"crypto/rand"
    13  	"crypto/rsa"
    14  	_ "crypto/sha256"
    15  	_ "crypto/sha512"
    16  	"crypto/x509/pkix"
    17  	"encoding/asn1"
    18  	"encoding/base64"
    19  	"encoding/hex"
    20  	"encoding/pem"
    21  	"math/big"
    22  	"net"
    23  	"os/exec"
    24  	"reflect"
    25  	"runtime"
    26  	"testing"
    27  	"time"
    28  )
    29  
    30  func TestParsePKCS1PrivateKey(t *testing.T) {
    31  	block, _ := pem.Decode([]byte(pemPrivateKey))
    32  	priv, err := ParsePKCS1PrivateKey(block.Bytes)
    33  	if err != nil {
    34  		t.Errorf("Failed to parse private key: %s", err)
    35  		return
    36  	}
    37  	if priv.PublicKey.N.Cmp(rsaPrivateKey.PublicKey.N) != 0 ||
    38  		priv.PublicKey.E != rsaPrivateKey.PublicKey.E ||
    39  		priv.D.Cmp(rsaPrivateKey.D) != 0 ||
    40  		priv.Primes[0].Cmp(rsaPrivateKey.Primes[0]) != 0 ||
    41  		priv.Primes[1].Cmp(rsaPrivateKey.Primes[1]) != 0 {
    42  		t.Errorf("got:%+v want:%+v", priv, rsaPrivateKey)
    43  	}
    44  }
    45  
    46  func TestParsePKIXPublicKey(t *testing.T) {
    47  	block, _ := pem.Decode([]byte(pemPublicKey))
    48  	pub, err := ParsePKIXPublicKey(block.Bytes)
    49  	if err != nil {
    50  		t.Errorf("Failed to parse RSA public key: %s", err)
    51  		return
    52  	}
    53  	rsaPub, ok := pub.(*rsa.PublicKey)
    54  	if !ok {
    55  		t.Errorf("Value returned from ParsePKIXPublicKey was not an RSA public key")
    56  		return
    57  	}
    58  
    59  	pubBytes2, err := MarshalPKIXPublicKey(rsaPub)
    60  	if err != nil {
    61  		t.Errorf("Failed to marshal RSA public key for the second time: %s", err)
    62  		return
    63  	}
    64  	if !bytes.Equal(pubBytes2, block.Bytes) {
    65  		t.Errorf("Reserialization of public key didn't match. got %x, want %x", pubBytes2, block.Bytes)
    66  	}
    67  }
    68  
    69  var pemPublicKey = `-----BEGIN PUBLIC KEY-----
    70  MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA3VoPN9PKUjKFLMwOge6+
    71  wnDi8sbETGIx2FKXGgqtAKpzmem53kRGEQg8WeqRmp12wgp74TGpkEXsGae7RS1k
    72  enJCnma4fii+noGH7R0qKgHvPrI2Bwa9hzsH8tHxpyM3qrXslOmD45EH9SxIDUBJ
    73  FehNdaPbLP1gFyahKMsdfxFJLUvbUycuZSJ2ZnIgeVxwm4qbSvZInL9Iu4FzuPtg
    74  fINKcbbovy1qq4KvPIrXzhbY3PWDc6btxCf3SE0JdE1MCPThntB62/bLMSQ7xdDR
    75  FF53oIpvxe/SCOymfWq/LW849Ytv3Xwod0+wzAP8STXG4HSELS4UedPYeHJJJYcZ
    76  +QIDAQAB
    77  -----END PUBLIC KEY-----
    78  `
    79  
    80  var pemPrivateKey = `-----BEGIN RSA PRIVATE KEY-----
    81  MIIBOgIBAAJBALKZD0nEffqM1ACuak0bijtqE2QrI/KLADv7l3kK3ppMyCuLKoF0
    82  fd7Ai2KW5ToIwzFofvJcS/STa6HA5gQenRUCAwEAAQJBAIq9amn00aS0h/CrjXqu
    83  /ThglAXJmZhOMPVn4eiu7/ROixi9sex436MaVeMqSNf7Ex9a8fRNfWss7Sqd9eWu
    84  RTUCIQDasvGASLqmjeffBNLTXV2A5g4t+kLVCpsEIZAycV5GswIhANEPLmax0ME/
    85  EO+ZJ79TJKN5yiGBRsv5yvx5UiHxajEXAiAhAol5N4EUyq6I9w1rYdhPMGpLfk7A
    86  IU2snfRJ6Nq2CQIgFrPsWRCkV+gOYcajD17rEqmuLrdIRexpg8N1DOSXoJ8CIGlS
    87  tAboUGBxTDq3ZroNism3DaMIbKPyYrAqhKov1h5V
    88  -----END RSA PRIVATE KEY-----
    89  `
    90  
    91  func bigFromString(s string) *big.Int {
    92  	ret := new(big.Int)
    93  	ret.SetString(s, 10)
    94  	return ret
    95  }
    96  
    97  func fromBase10(base10 string) *big.Int {
    98  	i := new(big.Int)
    99  	i.SetString(base10, 10)
   100  	return i
   101  }
   102  
   103  func bigFromHexString(s string) *big.Int {
   104  	ret := new(big.Int)
   105  	ret.SetString(s, 16)
   106  	return ret
   107  }
   108  
   109  var rsaPrivateKey = &rsa.PrivateKey{
   110  	PublicKey: rsa.PublicKey{
   111  		N: bigFromString("9353930466774385905609975137998169297361893554149986716853295022578535724979677252958524466350471210367835187480748268864277464700638583474144061408845077"),
   112  		E: 65537,
   113  	},
   114  	D: bigFromString("7266398431328116344057699379749222532279343923819063639497049039389899328538543087657733766554155839834519529439851673014800261285757759040931985506583861"),
   115  	Primes: []*big.Int{
   116  		bigFromString("98920366548084643601728869055592650835572950932266967461790948584315647051443"),
   117  		bigFromString("94560208308847015747498523884063394671606671904944666360068158221458669711639"),
   118  	},
   119  }
   120  
   121  func TestMarshalRSAPrivateKey(t *testing.T) {
   122  	priv := &rsa.PrivateKey{
   123  		PublicKey: rsa.PublicKey{
   124  			N: fromBase10("16346378922382193400538269749936049106320265317511766357599732575277382844051791096569333808598921852351577762718529818072849191122419410612033592401403764925096136759934497687765453905884149505175426053037420486697072448609022753683683718057795566811401938833367954642951433473337066311978821180526439641496973296037000052546108507805269279414789035461158073156772151892452251106173507240488993608650881929629163465099476849643165682709047462010581308719577053905787496296934240246311806555924593059995202856826239801816771116902778517096212527979497399966526283516447337775509777558018145573127308919204297111496233"),
   125  			E: 3,
   126  		},
   127  		D: fromBase10("10897585948254795600358846499957366070880176878341177571733155050184921896034527397712889205732614568234385175145686545381899460748279607074689061600935843283397424506622998458510302603922766336783617368686090042765718290914099334449154829375179958369993407724946186243249568928237086215759259909861748642124071874879861299389874230489928271621259294894142840428407196932444474088857746123104978617098858619445675532587787023228852383149557470077802718705420275739737958953794088728369933811184572620857678792001136676902250566845618813972833750098806496641114644760255910789397593428910198080271317419213080834885003"),
   128  		Primes: []*big.Int{
   129  			fromBase10("1025363189502892836833747188838978207017355117492483312747347695538428729137306368764177201532277413433182799108299960196606011786562992097313508180436744488171474690412562218914213688661311117337381958560443"),
   130  			fromBase10("3467903426626310123395340254094941045497208049900750380025518552334536945536837294961497712862519984786362199788654739924501424784631315081391467293694361474867825728031147665777546570788493758372218019373"),
   131  			fromBase10("4597024781409332673052708605078359346966325141767460991205742124888960305710298765592730135879076084498363772408626791576005136245060321874472727132746643162385746062759369754202494417496879741537284589047"),
   132  		},
   133  	}
   134  
   135  	derBytes := MarshalPKCS1PrivateKey(priv)
   136  
   137  	priv2, err := ParsePKCS1PrivateKey(derBytes)
   138  	if err != nil {
   139  		t.Errorf("error parsing serialized key: %s", err)
   140  		return
   141  	}
   142  	if priv.PublicKey.N.Cmp(priv2.PublicKey.N) != 0 ||
   143  		priv.PublicKey.E != priv2.PublicKey.E ||
   144  		priv.D.Cmp(priv2.D) != 0 ||
   145  		len(priv2.Primes) != 3 ||
   146  		priv.Primes[0].Cmp(priv2.Primes[0]) != 0 ||
   147  		priv.Primes[1].Cmp(priv2.Primes[1]) != 0 ||
   148  		priv.Primes[2].Cmp(priv2.Primes[2]) != 0 {
   149  		t.Errorf("got:%+v want:%+v", priv, priv2)
   150  	}
   151  }
   152  
   153  type matchHostnamesTest struct {
   154  	pattern, host string
   155  	ok            bool
   156  }
   157  
   158  var matchHostnamesTests = []matchHostnamesTest{
   159  	{"a.b.c", "a.b.c", true},
   160  	{"a.b.c", "b.b.c", false},
   161  	{"", "b.b.c", false},
   162  	{"a.b.c", "", false},
   163  	{"example.com", "example.com", true},
   164  	{"example.com", "www.example.com", false},
   165  	{"*.example.com", "example.com", false},
   166  	{"*.example.com", "www.example.com", true},
   167  	{"*.example.com", "www.example.com.", true},
   168  	{"*.example.com", "xyz.www.example.com", false},
   169  	{"*.*.example.com", "xyz.www.example.com", false},
   170  	{"*.www.*.com", "xyz.www.example.com", false},
   171  	{"*bar.example.com", "foobar.example.com", false},
   172  	{"f*.example.com", "foobar.example.com", false},
   173  	{"", ".", false},
   174  	{".", "", false},
   175  	{".", ".", false},
   176  	{"example.com", "example.com.", true},
   177  	{"example.com.", "example.com", true},
   178  	{"example.com.", "example.com.", true},
   179  	{"*.com.", "example.com.", true},
   180  	{"*.com.", "example.com", true},
   181  	{"*.com", "example.com", true},
   182  	{"*.com", "example.com.", true},
   183  }
   184  
   185  func TestMatchHostnames(t *testing.T) {
   186  	for i, test := range matchHostnamesTests {
   187  		r := matchHostnames(test.pattern, test.host)
   188  		if r != test.ok {
   189  			t.Errorf("#%d mismatch got: %t want: %t when matching '%s' against '%s'", i, r, test.ok, test.host, test.pattern)
   190  		}
   191  	}
   192  }
   193  
   194  func TestMatchIP(t *testing.T) {
   195  	// Check that pattern matching is working.
   196  	c := &Certificate{
   197  		DNSNames: []string{"*.foo.bar.baz"},
   198  		Subject: pkix.Name{
   199  			CommonName: "*.foo.bar.baz",
   200  		},
   201  	}
   202  	err := c.VerifyHostname("quux.foo.bar.baz")
   203  	if err != nil {
   204  		t.Fatalf("VerifyHostname(quux.foo.bar.baz): %v", err)
   205  	}
   206  
   207  	// But check that if we change it to be matching against an IP address,
   208  	// it is rejected.
   209  	c = &Certificate{
   210  		DNSNames: []string{"*.2.3.4"},
   211  		Subject: pkix.Name{
   212  			CommonName: "*.2.3.4",
   213  		},
   214  	}
   215  	err = c.VerifyHostname("1.2.3.4")
   216  	if err == nil {
   217  		t.Fatalf("VerifyHostname(1.2.3.4) should have failed, did not")
   218  	}
   219  
   220  	c = &Certificate{
   221  		IPAddresses: []net.IP{net.ParseIP("127.0.0.1"), net.ParseIP("::1")},
   222  	}
   223  	err = c.VerifyHostname("127.0.0.1")
   224  	if err != nil {
   225  		t.Fatalf("VerifyHostname(127.0.0.1): %v", err)
   226  	}
   227  	err = c.VerifyHostname("::1")
   228  	if err != nil {
   229  		t.Fatalf("VerifyHostname(::1): %v", err)
   230  	}
   231  	err = c.VerifyHostname("[::1]")
   232  	if err != nil {
   233  		t.Fatalf("VerifyHostname([::1]): %v", err)
   234  	}
   235  }
   236  
   237  func TestCertificateParse(t *testing.T) {
   238  	s, _ := hex.DecodeString(certBytes)
   239  	certs, err := ParseCertificates(s)
   240  	if err != nil {
   241  		t.Error(err)
   242  	}
   243  	if len(certs) != 2 {
   244  		t.Errorf("Wrong number of certs: got %d want 2", len(certs))
   245  		return
   246  	}
   247  
   248  	err = certs[0].CheckSignatureFrom(certs[1])
   249  	if err != nil {
   250  		t.Error(err)
   251  	}
   252  
   253  	if err := certs[0].VerifyHostname("mail.google.com"); err != nil {
   254  		t.Error(err)
   255  	}
   256  
   257  	const expectedExtensions = 4
   258  	if n := len(certs[0].Extensions); n != expectedExtensions {
   259  		t.Errorf("want %d extensions, got %d", expectedExtensions, n)
   260  	}
   261  }
   262  
   263  var certBytes = "308203223082028ba00302010202106edf0d9499fd4533dd1297fc42a93be1300d06092a864886" +
   264  	"f70d0101050500304c310b3009060355040613025a4131253023060355040a131c546861777465" +
   265  	"20436f6e73756c74696e67202850747929204c74642e311630140603550403130d546861777465" +
   266  	"20534743204341301e170d3039303332353136343932395a170d3130303332353136343932395a" +
   267  	"3069310b3009060355040613025553311330110603550408130a43616c69666f726e6961311630" +
   268  	"140603550407130d4d6f756e7461696e205669657731133011060355040a130a476f6f676c6520" +
   269  	"496e63311830160603550403130f6d61696c2e676f6f676c652e636f6d30819f300d06092a8648" +
   270  	"86f70d010101050003818d0030818902818100c5d6f892fccaf5614b064149e80a2c9581a218ef" +
   271  	"41ec35bd7a58125ae76f9ea54ddc893abbeb029f6b73616bf0ffd868791fba7af9c4aebf3706ba" +
   272  	"3eeaeed27435b4ddcfb157c05f351d66aa87fee0de072d66d773affbd36ab78bef090e0cc861a9" +
   273  	"03ac90dd98b51c9c41566c017f0beec3bff391051ffba0f5cc6850ad2a590203010001a381e730" +
   274  	"81e430280603551d250421301f06082b0601050507030106082b06010505070302060960864801" +
   275  	"86f842040130360603551d1f042f302d302ba029a0278625687474703a2f2f63726c2e74686177" +
   276  	"74652e636f6d2f54686177746553474343412e63726c307206082b060105050701010466306430" +
   277  	"2206082b060105050730018616687474703a2f2f6f6373702e7468617774652e636f6d303e0608" +
   278  	"2b060105050730028632687474703a2f2f7777772e7468617774652e636f6d2f7265706f736974" +
   279  	"6f72792f5468617774655f5347435f43412e637274300c0603551d130101ff04023000300d0609" +
   280  	"2a864886f70d01010505000381810062f1f3050ebc105e497c7aedf87e24d2f4a986bb3b837bd1" +
   281  	"9b91ebcad98b065992f6bd2b49b7d6d3cb2e427a99d606c7b1d46352527fac39e6a8b6726de5bf" +
   282  	"70212a52cba07634a5e332011bd1868e78eb5e3c93cf03072276786f207494feaa0ed9d53b2110" +
   283  	"a76571f90209cdae884385c882587030ee15f33d761e2e45a6bc308203233082028ca003020102" +
   284  	"020430000002300d06092a864886f70d0101050500305f310b3009060355040613025553311730" +
   285  	"15060355040a130e566572695369676e2c20496e632e31373035060355040b132e436c61737320" +
   286  	"33205075626c6963205072696d6172792043657274696669636174696f6e20417574686f726974" +
   287  	"79301e170d3034303531333030303030305a170d3134303531323233353935395a304c310b3009" +
   288  	"060355040613025a4131253023060355040a131c54686177746520436f6e73756c74696e672028" +
   289  	"50747929204c74642e311630140603550403130d5468617774652053474320434130819f300d06" +
   290  	"092a864886f70d010101050003818d0030818902818100d4d367d08d157faecd31fe7d1d91a13f" +
   291  	"0b713cacccc864fb63fc324b0794bd6f80ba2fe10493c033fc093323e90b742b71c403c6d2cde2" +
   292  	"2ff50963cdff48a500bfe0e7f388b72d32de9836e60aad007bc4644a3b847503f270927d0e62f5" +
   293  	"21ab693684317590f8bfc76c881b06957cc9e5a8de75a12c7a68dfd5ca1c875860190203010001" +
   294  	"a381fe3081fb30120603551d130101ff040830060101ff020100300b0603551d0f040403020106" +
   295  	"301106096086480186f842010104040302010630280603551d110421301fa41d301b3119301706" +
   296  	"035504031310507269766174654c6162656c332d313530310603551d1f042a30283026a024a022" +
   297  	"8620687474703a2f2f63726c2e766572697369676e2e636f6d2f706361332e63726c303206082b" +
   298  	"0601050507010104263024302206082b060105050730018616687474703a2f2f6f6373702e7468" +
   299  	"617774652e636f6d30340603551d25042d302b06082b0601050507030106082b06010505070302" +
   300  	"06096086480186f8420401060a6086480186f845010801300d06092a864886f70d010105050003" +
   301  	"81810055ac63eadea1ddd2905f9f0bce76be13518f93d9052bc81b774bad6950a1eededcfddb07" +
   302  	"e9e83994dcab72792f06bfab8170c4a8edea5334edef1e53d906c7562bd15cf4d18a8eb42bb137" +
   303  	"9048084225c53e8acb7feb6f04d16dc574a2f7a27c7b603c77cd0ece48027f012fb69b37e02a2a" +
   304  	"36dcd585d6ace53f546f961e05af"
   305  
   306  func TestCreateSelfSignedCertificate(t *testing.T) {
   307  	random := rand.Reader
   308  
   309  	block, _ := pem.Decode([]byte(pemPrivateKey))
   310  	rsaPriv, err := ParsePKCS1PrivateKey(block.Bytes)
   311  	if err != nil {
   312  		t.Fatalf("Failed to parse private key: %s", err)
   313  	}
   314  
   315  	ecdsaPriv, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
   316  	if err != nil {
   317  		t.Fatalf("Failed to generate ECDSA key: %s", err)
   318  	}
   319  
   320  	tests := []struct {
   321  		name      string
   322  		pub, priv interface{}
   323  		checkSig  bool
   324  		sigAlgo   SignatureAlgorithm
   325  	}{
   326  		{"RSA/RSA", &rsaPriv.PublicKey, rsaPriv, true, SHA1WithRSA},
   327  		{"RSA/ECDSA", &rsaPriv.PublicKey, ecdsaPriv, false, ECDSAWithSHA384},
   328  		{"ECDSA/RSA", &ecdsaPriv.PublicKey, rsaPriv, false, SHA256WithRSA},
   329  		{"ECDSA/ECDSA", &ecdsaPriv.PublicKey, ecdsaPriv, true, ECDSAWithSHA1},
   330  	}
   331  
   332  	testExtKeyUsage := []ExtKeyUsage{ExtKeyUsageClientAuth, ExtKeyUsageServerAuth}
   333  	testUnknownExtKeyUsage := []asn1.ObjectIdentifier{[]int{1, 2, 3}, []int{2, 59, 1}}
   334  	extraExtensionData := []byte("extra extension")
   335  
   336  	for _, test := range tests {
   337  		commonName := "test.example.com"
   338  		template := Certificate{
   339  			SerialNumber: big.NewInt(1),
   340  			Subject: pkix.Name{
   341  				CommonName:   commonName,
   342  				Organization: []string{"Σ Acme Co"},
   343  				Country:      []string{"US"},
   344  				ExtraNames: []pkix.AttributeTypeAndValue{
   345  					{
   346  						Type:  []int{2, 5, 4, 42},
   347  						Value: "Gopher",
   348  					},
   349  					// This should override the Country, above.
   350  					{
   351  						Type:  []int{2, 5, 4, 6},
   352  						Value: "NL",
   353  					},
   354  				},
   355  			},
   356  			NotBefore: time.Unix(1000, 0),
   357  			NotAfter:  time.Unix(100000, 0),
   358  
   359  			SignatureAlgorithm: test.sigAlgo,
   360  
   361  			SubjectKeyId: []byte{1, 2, 3, 4},
   362  			KeyUsage:     KeyUsageCertSign,
   363  
   364  			ExtKeyUsage:        testExtKeyUsage,
   365  			UnknownExtKeyUsage: testUnknownExtKeyUsage,
   366  
   367  			BasicConstraintsValid: true,
   368  			IsCA: true,
   369  
   370  			OCSPServer:            []string{"http://ocsp.example.com"},
   371  			IssuingCertificateURL: []string{"http://crt.example.com/ca1.crt"},
   372  
   373  			DNSNames:       []string{"test.example.com"},
   374  			EmailAddresses: []string{"gopher@golang.org"},
   375  			IPAddresses:    []net.IP{net.IPv4(127, 0, 0, 1).To4(), net.ParseIP("2001:4860:0:2001::68")},
   376  
   377  			PolicyIdentifiers:   []asn1.ObjectIdentifier{[]int{1, 2, 3}},
   378  			PermittedDNSDomains: []string{".example.com", "example.com"},
   379  
   380  			CRLDistributionPoints: []string{"http://crl1.example.com/ca1.crl", "http://crl2.example.com/ca1.crl"},
   381  
   382  			ExtraExtensions: []pkix.Extension{
   383  				{
   384  					Id:    []int{1, 2, 3, 4},
   385  					Value: extraExtensionData,
   386  				},
   387  				// This extension should override the SubjectKeyId, above.
   388  				{
   389  					Id:       oidExtensionSubjectKeyId,
   390  					Critical: false,
   391  					Value:    []byte{0x04, 0x04, 4, 3, 2, 1},
   392  				},
   393  			},
   394  		}
   395  
   396  		derBytes, err := CreateCertificate(random, &template, &template, test.pub, test.priv)
   397  		if err != nil {
   398  			t.Errorf("%s: failed to create certificate: %s", test.name, err)
   399  			continue
   400  		}
   401  
   402  		cert, err := ParseCertificate(derBytes)
   403  		if err != nil {
   404  			t.Errorf("%s: failed to parse certificate: %s", test.name, err)
   405  			continue
   406  		}
   407  
   408  		if len(cert.PolicyIdentifiers) != 1 || !cert.PolicyIdentifiers[0].Equal(template.PolicyIdentifiers[0]) {
   409  			t.Errorf("%s: failed to parse policy identifiers: got:%#v want:%#v", test.name, cert.PolicyIdentifiers, template.PolicyIdentifiers)
   410  		}
   411  
   412  		if len(cert.PermittedDNSDomains) != 2 || cert.PermittedDNSDomains[0] != ".example.com" || cert.PermittedDNSDomains[1] != "example.com" {
   413  			t.Errorf("%s: failed to parse name constraints: %#v", test.name, cert.PermittedDNSDomains)
   414  		}
   415  
   416  		if cert.Subject.CommonName != commonName {
   417  			t.Errorf("%s: subject wasn't correctly copied from the template. Got %s, want %s", test.name, cert.Subject.CommonName, commonName)
   418  		}
   419  
   420  		if len(cert.Subject.Country) != 1 || cert.Subject.Country[0] != "NL" {
   421  			t.Errorf("%s: ExtraNames didn't override Country", test.name)
   422  		}
   423  
   424  		found := false
   425  		for _, atv := range cert.Subject.Names {
   426  			if atv.Type.Equal([]int{2, 5, 4, 42}) {
   427  				found = true
   428  				break
   429  			}
   430  		}
   431  		if !found {
   432  			t.Errorf("%s: Names didn't contain oid 2.5.4.42 from ExtraNames", test.name)
   433  		}
   434  
   435  		if cert.Issuer.CommonName != commonName {
   436  			t.Errorf("%s: issuer wasn't correctly copied from the template. Got %s, want %s", test.name, cert.Issuer.CommonName, commonName)
   437  		}
   438  
   439  		if cert.SignatureAlgorithm != test.sigAlgo {
   440  			t.Errorf("%s: SignatureAlgorithm wasn't copied from template. Got %v, want %v", test.name, cert.SignatureAlgorithm, test.sigAlgo)
   441  		}
   442  
   443  		if !reflect.DeepEqual(cert.ExtKeyUsage, testExtKeyUsage) {
   444  			t.Errorf("%s: extkeyusage wasn't correctly copied from the template. Got %v, want %v", test.name, cert.ExtKeyUsage, testExtKeyUsage)
   445  		}
   446  
   447  		if !reflect.DeepEqual(cert.UnknownExtKeyUsage, testUnknownExtKeyUsage) {
   448  			t.Errorf("%s: unknown extkeyusage wasn't correctly copied from the template. Got %v, want %v", test.name, cert.UnknownExtKeyUsage, testUnknownExtKeyUsage)
   449  		}
   450  
   451  		if !reflect.DeepEqual(cert.OCSPServer, template.OCSPServer) {
   452  			t.Errorf("%s: OCSP servers differ from template. Got %v, want %v", test.name, cert.OCSPServer, template.OCSPServer)
   453  		}
   454  
   455  		if !reflect.DeepEqual(cert.IssuingCertificateURL, template.IssuingCertificateURL) {
   456  			t.Errorf("%s: Issuing certificate URLs differ from template. Got %v, want %v", test.name, cert.IssuingCertificateURL, template.IssuingCertificateURL)
   457  		}
   458  
   459  		if !reflect.DeepEqual(cert.DNSNames, template.DNSNames) {
   460  			t.Errorf("%s: SAN DNS names differ from template. Got %v, want %v", test.name, cert.DNSNames, template.DNSNames)
   461  		}
   462  
   463  		if !reflect.DeepEqual(cert.EmailAddresses, template.EmailAddresses) {
   464  			t.Errorf("%s: SAN emails differ from template. Got %v, want %v", test.name, cert.EmailAddresses, template.EmailAddresses)
   465  		}
   466  
   467  		if !reflect.DeepEqual(cert.IPAddresses, template.IPAddresses) {
   468  			t.Errorf("%s: SAN IPs differ from template. Got %v, want %v", test.name, cert.IPAddresses, template.IPAddresses)
   469  		}
   470  
   471  		if !reflect.DeepEqual(cert.CRLDistributionPoints, template.CRLDistributionPoints) {
   472  			t.Errorf("%s: CRL distribution points differ from template. Got %v, want %v", test.name, cert.CRLDistributionPoints, template.CRLDistributionPoints)
   473  		}
   474  
   475  		if !bytes.Equal(cert.SubjectKeyId, []byte{4, 3, 2, 1}) {
   476  			t.Errorf("%s: ExtraExtensions didn't override SubjectKeyId", test.name)
   477  		}
   478  
   479  		if bytes.Index(derBytes, extraExtensionData) == -1 {
   480  			t.Errorf("%s: didn't find extra extension in DER output", test.name)
   481  		}
   482  
   483  		if test.checkSig {
   484  			err = cert.CheckSignatureFrom(cert)
   485  			if err != nil {
   486  				t.Errorf("%s: signature verification failed: %s", test.name, err)
   487  			}
   488  		}
   489  	}
   490  }
   491  
   492  func TestUnknownCriticalExtension(t *testing.T) {
   493  	priv, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
   494  	if err != nil {
   495  		t.Fatalf("Failed to generate ECDSA key: %s", err)
   496  	}
   497  
   498  	oids := []asn1.ObjectIdentifier{
   499  		// This OID is in the PKIX arc, but unknown.
   500  		asn1.ObjectIdentifier{2, 5, 29, 999999},
   501  		// This is a nonsense, unassigned OID.
   502  		asn1.ObjectIdentifier{1, 2, 3, 4},
   503  	}
   504  
   505  	for _, oid := range oids {
   506  		template := Certificate{
   507  			SerialNumber: big.NewInt(1),
   508  			Subject: pkix.Name{
   509  				CommonName: "foo",
   510  			},
   511  			NotBefore: time.Unix(1000, 0),
   512  			NotAfter:  time.Unix(100000, 0),
   513  
   514  			ExtraExtensions: []pkix.Extension{
   515  				{
   516  					Id:       oid,
   517  					Critical: true,
   518  					Value:    nil,
   519  				},
   520  			},
   521  		}
   522  
   523  		derBytes, err := CreateCertificate(rand.Reader, &template, &template, &priv.PublicKey, priv)
   524  		if err != nil {
   525  			t.Fatalf("failed to create certificate: %s", err)
   526  		}
   527  
   528  		_, err = ParseCertificate(derBytes)
   529  		if err == nil {
   530  			t.Fatalf("Certificate with critical extension was parsed without error.")
   531  		}
   532  		if _, ok := err.(UnhandledCriticalExtension); !ok {
   533  			t.Fatalf("Error was %#v, but wanted one of type UnhandledCriticalExtension", err)
   534  		}
   535  	}
   536  }
   537  
   538  // Self-signed certificate using ECDSA with SHA1 & secp256r1
   539  var ecdsaSHA1CertPem = `
   540  -----BEGIN CERTIFICATE-----
   541  MIICDjCCAbUCCQDF6SfN0nsnrjAJBgcqhkjOPQQBMIGPMQswCQYDVQQGEwJVUzET
   542  MBEGA1UECAwKQ2FsaWZvcm5pYTEWMBQGA1UEBwwNTW91bnRhaW4gVmlldzEVMBMG
   543  A1UECgwMR29vZ2xlLCBJbmMuMRcwFQYDVQQDDA53d3cuZ29vZ2xlLmNvbTEjMCEG
   544  CSqGSIb3DQEJARYUZ29sYW5nLWRldkBnbWFpbC5jb20wHhcNMTIwNTIwMjAyMDUw
   545  WhcNMjIwNTE4MjAyMDUwWjCBjzELMAkGA1UEBhMCVVMxEzARBgNVBAgMCkNhbGlm
   546  b3JuaWExFjAUBgNVBAcMDU1vdW50YWluIFZpZXcxFTATBgNVBAoMDEdvb2dsZSwg
   547  SW5jLjEXMBUGA1UEAwwOd3d3Lmdvb2dsZS5jb20xIzAhBgkqhkiG9w0BCQEWFGdv
   548  bGFuZy1kZXZAZ21haWwuY29tMFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAE/Wgn
   549  WQDo5+bz71T0327ERgd5SDDXFbXLpzIZDXTkjpe8QTEbsF+ezsQfrekrpDPC4Cd3
   550  P9LY0tG+aI8IyVKdUjAJBgcqhkjOPQQBA0gAMEUCIGlsqMcRqWVIWTD6wXwe6Jk2
   551  DKxL46r/FLgJYnzBEH99AiEA3fBouObsvV1R3oVkb4BQYnD4/4LeId6lAT43YvyV
   552  a/A=
   553  -----END CERTIFICATE-----
   554  `
   555  
   556  // Self-signed certificate using ECDSA with SHA256 & secp256r1
   557  var ecdsaSHA256p256CertPem = `
   558  -----BEGIN CERTIFICATE-----
   559  MIICDzCCAbYCCQDlsuMWvgQzhTAKBggqhkjOPQQDAjCBjzELMAkGA1UEBhMCVVMx
   560  EzARBgNVBAgMCkNhbGlmb3JuaWExFjAUBgNVBAcMDU1vdW50YWluIFZpZXcxFTAT
   561  BgNVBAoMDEdvb2dsZSwgSW5jLjEXMBUGA1UEAwwOd3d3Lmdvb2dsZS5jb20xIzAh
   562  BgkqhkiG9w0BCQEWFGdvbGFuZy1kZXZAZ21haWwuY29tMB4XDTEyMDUyMTAwMTkx
   563  NloXDTIyMDUxOTAwMTkxNlowgY8xCzAJBgNVBAYTAlVTMRMwEQYDVQQIDApDYWxp
   564  Zm9ybmlhMRYwFAYDVQQHDA1Nb3VudGFpbiBWaWV3MRUwEwYDVQQKDAxHb29nbGUs
   565  IEluYy4xFzAVBgNVBAMMDnd3dy5nb29nbGUuY29tMSMwIQYJKoZIhvcNAQkBFhRn
   566  b2xhbmctZGV2QGdtYWlsLmNvbTBZMBMGByqGSM49AgEGCCqGSM49AwEHA0IABPMt
   567  2ErhxAty5EJRu9yM+MTy+hUXm3pdW1ensAv382KoGExSXAFWP7pjJnNtHO+XSwVm
   568  YNtqjcAGFKpweoN//kQwCgYIKoZIzj0EAwIDRwAwRAIgIYSaUA/IB81gjbIw/hUV
   569  70twxJr5EcgOo0hLp3Jm+EYCIFDO3NNcgmURbJ1kfoS3N/0O+irUtoPw38YoNkqJ
   570  h5wi
   571  -----END CERTIFICATE-----
   572  `
   573  
   574  // Self-signed certificate using ECDSA with SHA256 & secp384r1
   575  var ecdsaSHA256p384CertPem = `
   576  -----BEGIN CERTIFICATE-----
   577  MIICSjCCAdECCQDje/no7mXkVzAKBggqhkjOPQQDAjCBjjELMAkGA1UEBhMCVVMx
   578  EzARBgNVBAgMCkNhbGlmb3JuaWExFjAUBgNVBAcMDU1vdW50YWluIFZpZXcxFDAS
   579  BgNVBAoMC0dvb2dsZSwgSW5jMRcwFQYDVQQDDA53d3cuZ29vZ2xlLmNvbTEjMCEG
   580  CSqGSIb3DQEJARYUZ29sYW5nLWRldkBnbWFpbC5jb20wHhcNMTIwNTIxMDYxMDM0
   581  WhcNMjIwNTE5MDYxMDM0WjCBjjELMAkGA1UEBhMCVVMxEzARBgNVBAgMCkNhbGlm
   582  b3JuaWExFjAUBgNVBAcMDU1vdW50YWluIFZpZXcxFDASBgNVBAoMC0dvb2dsZSwg
   583  SW5jMRcwFQYDVQQDDA53d3cuZ29vZ2xlLmNvbTEjMCEGCSqGSIb3DQEJARYUZ29s
   584  YW5nLWRldkBnbWFpbC5jb20wdjAQBgcqhkjOPQIBBgUrgQQAIgNiAARRuzRNIKRK
   585  jIktEmXanNmrTR/q/FaHXLhWRZ6nHWe26Fw7Rsrbk+VjGy4vfWtNn7xSFKrOu5ze
   586  qxKnmE0h5E480MNgrUiRkaGO2GMJJVmxx20aqkXOk59U8yGA4CghE6MwCgYIKoZI
   587  zj0EAwIDZwAwZAIwBZEN8gvmRmfeP/9C1PRLzODIY4JqWub2PLRT4mv9GU+yw3Gr
   588  PU9A3CHMdEcdw/MEAjBBO1lId8KOCh9UZunsSMfqXiVurpzmhWd6VYZ/32G+M+Mh
   589  3yILeYQzllt/g0rKVRk=
   590  -----END CERTIFICATE-----
   591  `
   592  
   593  // Self-signed certificate using ECDSA with SHA384 & secp521r1
   594  var ecdsaSHA384p521CertPem = `
   595  -----BEGIN CERTIFICATE-----
   596  MIICljCCAfcCCQDhp1AFD/ahKjAKBggqhkjOPQQDAzCBjjELMAkGA1UEBhMCVVMx
   597  EzARBgNVBAgMCkNhbGlmb3JuaWExFjAUBgNVBAcMDU1vdW50YWluIFZpZXcxFDAS
   598  BgNVBAoMC0dvb2dsZSwgSW5jMRcwFQYDVQQDDA53d3cuZ29vZ2xlLmNvbTEjMCEG
   599  CSqGSIb3DQEJARYUZ29sYW5nLWRldkBnbWFpbC5jb20wHhcNMTIwNTIxMTUwNDI5
   600  WhcNMjIwNTE5MTUwNDI5WjCBjjELMAkGA1UEBhMCVVMxEzARBgNVBAgMCkNhbGlm
   601  b3JuaWExFjAUBgNVBAcMDU1vdW50YWluIFZpZXcxFDASBgNVBAoMC0dvb2dsZSwg
   602  SW5jMRcwFQYDVQQDDA53d3cuZ29vZ2xlLmNvbTEjMCEGCSqGSIb3DQEJARYUZ29s
   603  YW5nLWRldkBnbWFpbC5jb20wgZswEAYHKoZIzj0CAQYFK4EEACMDgYYABACqx9Rv
   604  IssRs1LWYcNN+WffwlHw4Tv3y8/LIAA9MF1ZScIonU9nRMxt4a2uGJVCPDw6JHpz
   605  PaYc0E9puLoE9AfKpwFr59Jkot7dBg55SKPEFkddoip/rvmN7NPAWjMBirOwjOkm
   606  8FPthvPhGPqsu9AvgVuHu3PosWiHGNrhh379pva8MzAKBggqhkjOPQQDAwOBjAAw
   607  gYgCQgEHNmswkUdPpHqrVxp9PvLVl+xxPuHBkT+75z9JizyxtqykHQo9Uh6SWCYH
   608  BF9KLolo01wMt8DjoYP5Fb3j5MH7xwJCAbWZzTOp4l4DPkIvAh4LeC4VWbwPPyqh
   609  kBg71w/iEcSY3wUKgHGcJJrObZw7wys91I5kENljqw/Samdr3ka+jBJa
   610  -----END CERTIFICATE-----
   611  `
   612  
   613  var ecdsaTests = []struct {
   614  	sigAlgo SignatureAlgorithm
   615  	pemCert string
   616  }{
   617  	{ECDSAWithSHA1, ecdsaSHA1CertPem},
   618  	{ECDSAWithSHA256, ecdsaSHA256p256CertPem},
   619  	{ECDSAWithSHA256, ecdsaSHA256p384CertPem},
   620  	{ECDSAWithSHA384, ecdsaSHA384p521CertPem},
   621  }
   622  
   623  func TestECDSA(t *testing.T) {
   624  	for i, test := range ecdsaTests {
   625  		pemBlock, _ := pem.Decode([]byte(test.pemCert))
   626  		cert, err := ParseCertificate(pemBlock.Bytes)
   627  		if err != nil {
   628  			t.Errorf("%d: failed to parse certificate: %s", i, err)
   629  			continue
   630  		}
   631  		if sa := cert.SignatureAlgorithm; sa != test.sigAlgo {
   632  			t.Errorf("%d: signature algorithm is %v, want %v", i, sa, test.sigAlgo)
   633  		}
   634  		if parsedKey, ok := cert.PublicKey.(*ecdsa.PublicKey); !ok {
   635  			t.Errorf("%d: wanted an ECDSA public key but found: %#v", i, parsedKey)
   636  		}
   637  		if pka := cert.PublicKeyAlgorithm; pka != ECDSA {
   638  			t.Errorf("%d: public key algorithm is %v, want ECDSA", i, pka)
   639  		}
   640  		if err = cert.CheckSignatureFrom(cert); err != nil {
   641  			t.Errorf("%d: certificate verification failed: %s", i, err)
   642  		}
   643  	}
   644  }
   645  
   646  // Self-signed certificate using DSA with SHA1
   647  var dsaCertPem = `-----BEGIN CERTIFICATE-----
   648  MIIEDTCCA82gAwIBAgIJALHPghaoxeDhMAkGByqGSM44BAMweTELMAkGA1UEBhMC
   649  VVMxCzAJBgNVBAgTAk5DMQ8wDQYDVQQHEwZOZXd0b24xFDASBgNVBAoTC0dvb2ds
   650  ZSwgSW5jMRIwEAYDVQQDEwlKb24gQWxsaWUxIjAgBgkqhkiG9w0BCQEWE2pvbmFs
   651  bGllQGdvb2dsZS5jb20wHhcNMTEwNTE0MDMwMTQ1WhcNMTEwNjEzMDMwMTQ1WjB5
   652  MQswCQYDVQQGEwJVUzELMAkGA1UECBMCTkMxDzANBgNVBAcTBk5ld3RvbjEUMBIG
   653  A1UEChMLR29vZ2xlLCBJbmMxEjAQBgNVBAMTCUpvbiBBbGxpZTEiMCAGCSqGSIb3
   654  DQEJARYTam9uYWxsaWVAZ29vZ2xlLmNvbTCCAbcwggEsBgcqhkjOOAQBMIIBHwKB
   655  gQC8hLUnQ7FpFYu4WXTj6DKvXvz8QrJkNJCVMTpKAT7uBpobk32S5RrPKXocd4gN
   656  8lyGB9ggS03EVlEwXvSmO0DH2MQtke2jl9j1HLydClMf4sbx5V6TV9IFw505U1iW
   657  jL7awRMgxge+FsudtJK254FjMFo03ZnOQ8ZJJ9E6AEDrlwIVAJpnBn9moyP11Ox5
   658  Asc/5dnjb6dPAoGBAJFHd4KVv1iTVCvEG6gGiYop5DJh28hUQcN9kul+2A0yPUSC
   659  X93oN00P8Vh3eYgSaCWZsha7zDG53MrVJ0Zf6v/X/CoZNhLldeNOepivTRAzn+Rz
   660  kKUYy5l1sxYLHQKF0UGNCXfFKZT0PCmgU+PWhYNBBMn6/cIh44vp85ideo5CA4GE
   661  AAKBgFmifCafzeRaohYKXJgMGSEaggCVCRq5xdyDCat+wbOkjC4mfG01/um3G8u5
   662  LxasjlWRKTR/tcAL7t0QuokVyQaYdVypZXNaMtx1db7YBuHjj3aP+8JOQRI9xz8c
   663  bp5NDJ5pISiFOv4p3GZfqZPcqckDt78AtkQrmnal2txhhjF6o4HeMIHbMB0GA1Ud
   664  DgQWBBQVyyr7hO11ZFFpWX50298Sa3V+rzCBqwYDVR0jBIGjMIGggBQVyyr7hO11
   665  ZFFpWX50298Sa3V+r6F9pHsweTELMAkGA1UEBhMCVVMxCzAJBgNVBAgTAk5DMQ8w
   666  DQYDVQQHEwZOZXd0b24xFDASBgNVBAoTC0dvb2dsZSwgSW5jMRIwEAYDVQQDEwlK
   667  b24gQWxsaWUxIjAgBgkqhkiG9w0BCQEWE2pvbmFsbGllQGdvb2dsZS5jb22CCQCx
   668  z4IWqMXg4TAMBgNVHRMEBTADAQH/MAkGByqGSM44BAMDLwAwLAIUPtn/5j8Q1jJI
   669  7ggOIsgrhgUdjGQCFCsmDq1H11q9+9Wp9IMeGrTSKHIM
   670  -----END CERTIFICATE-----
   671  `
   672  
   673  func TestParseCertificateWithDsaPublicKey(t *testing.T) {
   674  	expectedKey := &dsa.PublicKey{
   675  		Parameters: dsa.Parameters{
   676  			P: bigFromHexString("00BC84B52743B169158BB85974E3E832AF5EFCFC42B264349095313A4A013EEE069A1B937D92E51ACF297A1C77880DF25C8607D8204B4DC45651305EF4A63B40C7D8C42D91EDA397D8F51CBC9D0A531FE2C6F1E55E9357D205C39D395358968CBEDAC11320C607BE16CB9DB492B6E78163305A34DD99CE43C64927D13A0040EB97"),
   677  			Q: bigFromHexString("009A67067F66A323F5D4EC7902C73FE5D9E36FA74F"),
   678  			G: bigFromHexString("009147778295BF5893542BC41BA806898A29E43261DBC85441C37D92E97ED80D323D44825FDDE8374D0FF15877798812682599B216BBCC31B9DCCAD527465FEAFFD7FC2A193612E575E34E7A98AF4D10339FE47390A518CB9975B3160B1D0285D1418D0977C52994F43C29A053E3D685834104C9FAFDC221E38BE9F3989D7A8E42"),
   679  		},
   680  		Y: bigFromHexString("59A27C269FCDE45AA2160A5C980C19211A820095091AB9C5DC8309AB7EC1B3A48C2E267C6D35FEE9B71BCBB92F16AC8E559129347FB5C00BEEDD10BA8915C90698755CA965735A32DC7575BED806E1E38F768FFBC24E41123DC73F1C6E9E4D0C9E692128853AFE29DC665FA993DCA9C903B7BF00B6442B9A76A5DADC6186317A"),
   681  	}
   682  	pemBlock, _ := pem.Decode([]byte(dsaCertPem))
   683  	cert, err := ParseCertificate(pemBlock.Bytes)
   684  	if err != nil {
   685  		t.Fatalf("Failed to parse certificate: %s", err)
   686  	}
   687  	if cert.PublicKeyAlgorithm != DSA {
   688  		t.Errorf("Parsed key algorithm was not DSA")
   689  	}
   690  	parsedKey, ok := cert.PublicKey.(*dsa.PublicKey)
   691  	if !ok {
   692  		t.Fatalf("Parsed key was not a DSA key: %s", err)
   693  	}
   694  	if expectedKey.Y.Cmp(parsedKey.Y) != 0 ||
   695  		expectedKey.P.Cmp(parsedKey.P) != 0 ||
   696  		expectedKey.Q.Cmp(parsedKey.Q) != 0 ||
   697  		expectedKey.G.Cmp(parsedKey.G) != 0 {
   698  		t.Fatal("Parsed key differs from expected key")
   699  	}
   700  }
   701  
   702  func TestParseCertificateWithDSASignatureAlgorithm(t *testing.T) {
   703  	pemBlock, _ := pem.Decode([]byte(dsaCertPem))
   704  	cert, err := ParseCertificate(pemBlock.Bytes)
   705  	if err != nil {
   706  		t.Fatalf("Failed to parse certificate: %s", err)
   707  	}
   708  	if cert.SignatureAlgorithm != DSAWithSHA1 {
   709  		t.Errorf("Parsed signature algorithm was not DSAWithSHA1")
   710  	}
   711  }
   712  
   713  func TestVerifyCertificateWithDSASignature(t *testing.T) {
   714  	pemBlock, _ := pem.Decode([]byte(dsaCertPem))
   715  	cert, err := ParseCertificate(pemBlock.Bytes)
   716  	if err != nil {
   717  		t.Fatalf("Failed to parse certificate: %s", err)
   718  	}
   719  	// test cert is self-signed
   720  	if err = cert.CheckSignatureFrom(cert); err != nil {
   721  		t.Fatalf("DSA Certificate verification failed: %s", err)
   722  	}
   723  }
   724  
   725  const pemCertificate = `-----BEGIN CERTIFICATE-----
   726  MIIB5DCCAZCgAwIBAgIBATALBgkqhkiG9w0BAQUwLTEQMA4GA1UEChMHQWNtZSBDbzEZMBcGA1UE
   727  AxMQdGVzdC5leGFtcGxlLmNvbTAeFw03MDAxMDEwMDE2NDBaFw03MDAxMDIwMzQ2NDBaMC0xEDAO
   728  BgNVBAoTB0FjbWUgQ28xGTAXBgNVBAMTEHRlc3QuZXhhbXBsZS5jb20wWjALBgkqhkiG9w0BAQED
   729  SwAwSAJBALKZD0nEffqM1ACuak0bijtqE2QrI/KLADv7l3kK3ppMyCuLKoF0fd7Ai2KW5ToIwzFo
   730  fvJcS/STa6HA5gQenRUCAwEAAaOBnjCBmzAOBgNVHQ8BAf8EBAMCAAQwDwYDVR0TAQH/BAUwAwEB
   731  /zANBgNVHQ4EBgQEAQIDBDAPBgNVHSMECDAGgAQBAgMEMBsGA1UdEQQUMBKCEHRlc3QuZXhhbXBs
   732  ZS5jb20wDwYDVR0gBAgwBjAEBgIqAzAqBgNVHR4EIzAhoB8wDoIMLmV4YW1wbGUuY29tMA2CC2V4
   733  YW1wbGUuY29tMAsGCSqGSIb3DQEBBQNBAHKZKoS1wEQOGhgklx4+/yFYQlnqwKXvar/ZecQvJwui
   734  0seMQnwBhwdBkHfVIU2Fu5VUMRyxlf0ZNaDXcpU581k=
   735  -----END CERTIFICATE-----`
   736  
   737  func TestCRLCreation(t *testing.T) {
   738  	block, _ := pem.Decode([]byte(pemPrivateKey))
   739  	priv, _ := ParsePKCS1PrivateKey(block.Bytes)
   740  	block, _ = pem.Decode([]byte(pemCertificate))
   741  	cert, _ := ParseCertificate(block.Bytes)
   742  
   743  	now := time.Unix(1000, 0)
   744  	expiry := time.Unix(10000, 0)
   745  
   746  	revokedCerts := []pkix.RevokedCertificate{
   747  		{
   748  			SerialNumber:   big.NewInt(1),
   749  			RevocationTime: now,
   750  		},
   751  		{
   752  			SerialNumber:   big.NewInt(42),
   753  			RevocationTime: now,
   754  		},
   755  	}
   756  
   757  	crlBytes, err := cert.CreateCRL(rand.Reader, priv, revokedCerts, now, expiry)
   758  	if err != nil {
   759  		t.Errorf("error creating CRL: %s", err)
   760  	}
   761  
   762  	_, err = ParseDERCRL(crlBytes)
   763  	if err != nil {
   764  		t.Errorf("error reparsing CRL: %s", err)
   765  	}
   766  }
   767  
   768  func fromBase64(in string) []byte {
   769  	out := make([]byte, base64.StdEncoding.DecodedLen(len(in)))
   770  	n, err := base64.StdEncoding.Decode(out, []byte(in))
   771  	if err != nil {
   772  		panic("failed to base64 decode")
   773  	}
   774  	return out[:n]
   775  }
   776  
   777  func TestParseDERCRL(t *testing.T) {
   778  	derBytes := fromBase64(derCRLBase64)
   779  	certList, err := ParseDERCRL(derBytes)
   780  	if err != nil {
   781  		t.Errorf("error parsing: %s", err)
   782  		return
   783  	}
   784  	numCerts := len(certList.TBSCertList.RevokedCertificates)
   785  	expected := 88
   786  	if numCerts != expected {
   787  		t.Errorf("bad number of revoked certificates. got: %d want: %d", numCerts, expected)
   788  	}
   789  
   790  	if certList.HasExpired(time.Unix(1302517272, 0)) {
   791  		t.Errorf("CRL has expired (but shouldn't have)")
   792  	}
   793  
   794  	// Can't check the signature here without a package cycle.
   795  }
   796  
   797  func TestCRLWithoutExpiry(t *testing.T) {
   798  	derBytes := fromBase64("MIHYMIGZMAkGByqGSM44BAMwEjEQMA4GA1UEAxMHQ2FybERTUxcNOTkwODI3MDcwMDAwWjBpMBMCAgDIFw05OTA4MjIwNzAwMDBaMBMCAgDJFw05OTA4MjIwNzAwMDBaMBMCAgDTFw05OTA4MjIwNzAwMDBaMBMCAgDSFw05OTA4MjIwNzAwMDBaMBMCAgDUFw05OTA4MjQwNzAwMDBaMAkGByqGSM44BAMDLwAwLAIUfmVSdjP+NHMX0feW+aDU2G1cfT0CFAJ6W7fVWxjBz4fvftok8yqDnDWh")
   799  	certList, err := ParseDERCRL(derBytes)
   800  	if err != nil {
   801  		t.Fatal(err)
   802  	}
   803  	if !certList.TBSCertList.NextUpdate.IsZero() {
   804  		t.Errorf("NextUpdate is not the zero value")
   805  	}
   806  }
   807  
   808  func TestParsePEMCRL(t *testing.T) {
   809  	pemBytes := fromBase64(pemCRLBase64)
   810  	certList, err := ParseCRL(pemBytes)
   811  	if err != nil {
   812  		t.Errorf("error parsing: %s", err)
   813  		return
   814  	}
   815  	numCerts := len(certList.TBSCertList.RevokedCertificates)
   816  	expected := 2
   817  	if numCerts != expected {
   818  		t.Errorf("bad number of revoked certificates. got: %d want: %d", numCerts, expected)
   819  	}
   820  
   821  	if certList.HasExpired(time.Unix(1302517272, 0)) {
   822  		t.Errorf("CRL has expired (but shouldn't have)")
   823  	}
   824  
   825  	// Can't check the signature here without a package cycle.
   826  }
   827  
   828  func TestImports(t *testing.T) {
   829  	switch runtime.GOOS {
   830  	case "android", "nacl":
   831  		t.Skipf("skipping on %s", runtime.GOOS)
   832  	case "darwin":
   833  		switch runtime.GOARCH {
   834  		case "arm", "arm64":
   835  			t.Skipf("skipping on %s/%s, cannot fork", runtime.GOOS, runtime.GOARCH)
   836  		}
   837  	}
   838  
   839  	if err := exec.Command("go", "run", "x509_test_import.go").Run(); err != nil {
   840  		t.Errorf("failed to run x509_test_import.go: %s", err)
   841  	}
   842  }
   843  
   844  const derCRLBase64 = "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"
   845  
   846  const pemCRLBase64 = "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"
   847  
   848  func TestCreateCertificateRequest(t *testing.T) {
   849  	random := rand.Reader
   850  
   851  	block, _ := pem.Decode([]byte(pemPrivateKey))
   852  	rsaPriv, err := ParsePKCS1PrivateKey(block.Bytes)
   853  	if err != nil {
   854  		t.Fatalf("Failed to parse private key: %s", err)
   855  	}
   856  
   857  	ecdsa256Priv, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
   858  	if err != nil {
   859  		t.Fatalf("Failed to generate ECDSA key: %s", err)
   860  	}
   861  
   862  	ecdsa384Priv, err := ecdsa.GenerateKey(elliptic.P384(), rand.Reader)
   863  	if err != nil {
   864  		t.Fatalf("Failed to generate ECDSA key: %s", err)
   865  	}
   866  
   867  	ecdsa521Priv, err := ecdsa.GenerateKey(elliptic.P521(), rand.Reader)
   868  	if err != nil {
   869  		t.Fatalf("Failed to generate ECDSA key: %s", err)
   870  	}
   871  
   872  	tests := []struct {
   873  		name    string
   874  		priv    interface{}
   875  		sigAlgo SignatureAlgorithm
   876  	}{
   877  		{"RSA", rsaPriv, SHA1WithRSA},
   878  		{"ECDSA-256", ecdsa256Priv, ECDSAWithSHA1},
   879  		{"ECDSA-384", ecdsa384Priv, ECDSAWithSHA1},
   880  		{"ECDSA-521", ecdsa521Priv, ECDSAWithSHA1},
   881  	}
   882  
   883  	for _, test := range tests {
   884  		template := CertificateRequest{
   885  			Subject: pkix.Name{
   886  				CommonName:   "test.example.com",
   887  				Organization: []string{"Σ Acme Co"},
   888  			},
   889  			SignatureAlgorithm: test.sigAlgo,
   890  			DNSNames:           []string{"test.example.com"},
   891  			EmailAddresses:     []string{"gopher@golang.org"},
   892  			IPAddresses:        []net.IP{net.IPv4(127, 0, 0, 1).To4(), net.ParseIP("2001:4860:0:2001::68")},
   893  		}
   894  
   895  		derBytes, err := CreateCertificateRequest(random, &template, test.priv)
   896  		if err != nil {
   897  			t.Errorf("%s: failed to create certificate request: %s", test.name, err)
   898  			continue
   899  		}
   900  
   901  		out, err := ParseCertificateRequest(derBytes)
   902  		if err != nil {
   903  			t.Errorf("%s: failed to create certificate request: %s", test.name, err)
   904  			continue
   905  		}
   906  
   907  		if out.Subject.CommonName != template.Subject.CommonName {
   908  			t.Errorf("%s: output subject common name and template subject common name don't match", test.name)
   909  		} else if len(out.Subject.Organization) != len(template.Subject.Organization) {
   910  			t.Errorf("%s: output subject organisation and template subject organisation don't match", test.name)
   911  		} else if len(out.DNSNames) != len(template.DNSNames) {
   912  			t.Errorf("%s: output DNS names and template DNS names don't match", test.name)
   913  		} else if len(out.EmailAddresses) != len(template.EmailAddresses) {
   914  			t.Errorf("%s: output email addresses and template email addresses don't match", test.name)
   915  		} else if len(out.IPAddresses) != len(template.IPAddresses) {
   916  			t.Errorf("%s: output IP addresses and template IP addresses names don't match", test.name)
   917  		}
   918  	}
   919  }
   920  
   921  func marshalAndParseCSR(t *testing.T, template *CertificateRequest) *CertificateRequest {
   922  	block, _ := pem.Decode([]byte(pemPrivateKey))
   923  	rsaPriv, err := ParsePKCS1PrivateKey(block.Bytes)
   924  	if err != nil {
   925  		t.Fatal(err)
   926  	}
   927  
   928  	derBytes, err := CreateCertificateRequest(rand.Reader, template, rsaPriv)
   929  	if err != nil {
   930  		t.Fatal(err)
   931  	}
   932  
   933  	csr, err := ParseCertificateRequest(derBytes)
   934  	if err != nil {
   935  		t.Fatal(err)
   936  	}
   937  
   938  	return csr
   939  }
   940  
   941  func TestCertificateRequestOverrides(t *testing.T) {
   942  	sanContents, err := marshalSANs([]string{"foo.example.com"}, nil, nil)
   943  	if err != nil {
   944  		t.Fatal(err)
   945  	}
   946  
   947  	template := CertificateRequest{
   948  		Subject: pkix.Name{
   949  			CommonName:   "test.example.com",
   950  			Organization: []string{"Σ Acme Co"},
   951  		},
   952  		DNSNames: []string{"test.example.com"},
   953  
   954  		// An explicit extension should override the DNSNames from the
   955  		// template.
   956  		ExtraExtensions: []pkix.Extension{
   957  			{
   958  				Id:    oidExtensionSubjectAltName,
   959  				Value: sanContents,
   960  			},
   961  		},
   962  	}
   963  
   964  	csr := marshalAndParseCSR(t, &template)
   965  
   966  	if len(csr.DNSNames) != 1 || csr.DNSNames[0] != "foo.example.com" {
   967  		t.Errorf("Extension did not override template. Got %v\n", csr.DNSNames)
   968  	}
   969  
   970  	// If there is already an attribute with X.509 extensions then the
   971  	// extra extensions should be added to it rather than creating a CSR
   972  	// with two extension attributes.
   973  
   974  	template.Attributes = []pkix.AttributeTypeAndValueSET{
   975  		{
   976  			Type: oidExtensionRequest,
   977  			Value: [][]pkix.AttributeTypeAndValue{
   978  				{
   979  					{
   980  						Type:  oidExtensionAuthorityInfoAccess,
   981  						Value: []byte("foo"),
   982  					},
   983  				},
   984  			},
   985  		},
   986  	}
   987  
   988  	csr = marshalAndParseCSR(t, &template)
   989  	if l := len(csr.Attributes); l != 1 {
   990  		t.Errorf("incorrect number of attributes: %d\n", l)
   991  	}
   992  
   993  	if !csr.Attributes[0].Type.Equal(oidExtensionRequest) ||
   994  		len(csr.Attributes[0].Value) != 1 ||
   995  		len(csr.Attributes[0].Value[0]) != 2 {
   996  		t.Errorf("bad attributes: %#v\n", csr.Attributes)
   997  	}
   998  
   999  	sanContents2, err := marshalSANs([]string{"foo2.example.com"}, nil, nil)
  1000  	if err != nil {
  1001  		t.Fatal(err)
  1002  	}
  1003  
  1004  	// Extensions in Attributes should override those in ExtraExtensions.
  1005  	template.Attributes[0].Value[0] = append(template.Attributes[0].Value[0], pkix.AttributeTypeAndValue{
  1006  		Type:  oidExtensionSubjectAltName,
  1007  		Value: sanContents2,
  1008  	})
  1009  
  1010  	csr = marshalAndParseCSR(t, &template)
  1011  
  1012  	if len(csr.DNSNames) != 1 || csr.DNSNames[0] != "foo2.example.com" {
  1013  		t.Errorf("Attributes did not override ExtraExtensions. Got %v\n", csr.DNSNames)
  1014  	}
  1015  }
  1016  
  1017  func TestParseCertificateRequest(t *testing.T) {
  1018  	for _, csrBase64 := range csrBase64Array {
  1019  		csrBytes := fromBase64(csrBase64)
  1020  		csr, err := ParseCertificateRequest(csrBytes)
  1021  		if err != nil {
  1022  			t.Fatalf("failed to parse CSR: %s", err)
  1023  		}
  1024  
  1025  		if len(csr.EmailAddresses) != 1 || csr.EmailAddresses[0] != "gopher@golang.org" {
  1026  			t.Errorf("incorrect email addresses found: %v", csr.EmailAddresses)
  1027  		}
  1028  
  1029  		if len(csr.DNSNames) != 1 || csr.DNSNames[0] != "test.example.com" {
  1030  			t.Errorf("incorrect DNS names found: %v", csr.DNSNames)
  1031  		}
  1032  
  1033  		if len(csr.Subject.Country) != 1 || csr.Subject.Country[0] != "AU" {
  1034  			t.Errorf("incorrect Subject name: %v", csr.Subject)
  1035  		}
  1036  
  1037  		found := false
  1038  		for _, e := range csr.Extensions {
  1039  			if e.Id.Equal(oidExtensionBasicConstraints) {
  1040  				found = true
  1041  				break
  1042  			}
  1043  		}
  1044  		if !found {
  1045  			t.Errorf("basic constraints extension not found in CSR")
  1046  		}
  1047  	}
  1048  }
  1049  
  1050  func TestMaxPathLen(t *testing.T) {
  1051  	block, _ := pem.Decode([]byte(pemPrivateKey))
  1052  	rsaPriv, err := ParsePKCS1PrivateKey(block.Bytes)
  1053  	if err != nil {
  1054  		t.Fatalf("Failed to parse private key: %s", err)
  1055  	}
  1056  
  1057  	template := &Certificate{
  1058  		SerialNumber: big.NewInt(1),
  1059  		Subject: pkix.Name{
  1060  			CommonName: "Σ Acme Co",
  1061  		},
  1062  		NotBefore: time.Unix(1000, 0),
  1063  		NotAfter:  time.Unix(100000, 0),
  1064  
  1065  		BasicConstraintsValid: true,
  1066  		IsCA: true,
  1067  	}
  1068  
  1069  	serialiseAndParse := func(template *Certificate) *Certificate {
  1070  		derBytes, err := CreateCertificate(rand.Reader, template, template, &rsaPriv.PublicKey, rsaPriv)
  1071  		if err != nil {
  1072  			t.Fatalf("failed to create certificate: %s", err)
  1073  			return nil
  1074  		}
  1075  
  1076  		cert, err := ParseCertificate(derBytes)
  1077  		if err != nil {
  1078  			t.Fatalf("failed to parse certificate: %s", err)
  1079  			return nil
  1080  		}
  1081  
  1082  		return cert
  1083  	}
  1084  
  1085  	cert1 := serialiseAndParse(template)
  1086  	if m := cert1.MaxPathLen; m != -1 {
  1087  		t.Errorf("Omitting MaxPathLen didn't turn into -1, got %d", m)
  1088  	}
  1089  	if cert1.MaxPathLenZero {
  1090  		t.Errorf("Omitting MaxPathLen resulted in MaxPathLenZero")
  1091  	}
  1092  
  1093  	template.MaxPathLen = 1
  1094  	cert2 := serialiseAndParse(template)
  1095  	if m := cert2.MaxPathLen; m != 1 {
  1096  		t.Errorf("Setting MaxPathLen didn't work. Got %d but set 1", m)
  1097  	}
  1098  	if cert2.MaxPathLenZero {
  1099  		t.Errorf("Setting MaxPathLen resulted in MaxPathLenZero")
  1100  	}
  1101  
  1102  	template.MaxPathLen = 0
  1103  	template.MaxPathLenZero = true
  1104  	cert3 := serialiseAndParse(template)
  1105  	if m := cert3.MaxPathLen; m != 0 {
  1106  		t.Errorf("Setting MaxPathLenZero didn't work, got %d", m)
  1107  	}
  1108  	if !cert3.MaxPathLenZero {
  1109  		t.Errorf("Setting MaxPathLen to zero didn't result in MaxPathLenZero")
  1110  	}
  1111  }
  1112  
  1113  func TestASN1BitLength(t *testing.T) {
  1114  	tests := []struct {
  1115  		bytes  []byte
  1116  		bitLen int
  1117  	}{
  1118  		{nil, 0},
  1119  		{[]byte{0x00}, 0},
  1120  		{[]byte{0x00, 0x00}, 0},
  1121  		{[]byte{0xf0}, 4},
  1122  		{[]byte{0x88}, 5},
  1123  		{[]byte{0xff}, 8},
  1124  		{[]byte{0xff, 0x80}, 9},
  1125  		{[]byte{0xff, 0x81}, 16},
  1126  	}
  1127  
  1128  	for i, test := range tests {
  1129  		if got := asn1BitLength(test.bytes); got != test.bitLen {
  1130  			t.Errorf("#%d: calculated bit-length of %d for %x, wanted %d", i, got, test.bytes, test.bitLen)
  1131  		}
  1132  	}
  1133  }
  1134  
  1135  // These CSR was generated with OpenSSL:
  1136  //  openssl req -out CSR.csr -new -sha256 -nodes -keyout privateKey.key -config openssl.cnf
  1137  //
  1138  // With openssl.cnf containing the following sections:
  1139  //   [ v3_req ]
  1140  //   basicConstraints = CA:FALSE
  1141  //   keyUsage = nonRepudiation, digitalSignature, keyEncipherment
  1142  //   subjectAltName = email:gopher@golang.org,DNS:test.example.com
  1143  //   [ req_attributes ]
  1144  //   challengePassword = ignored challenge
  1145  //   unstructuredName  = ignored unstructured name
  1146  var csrBase64Array = [...]string{
  1147  	// Just [ v3_req ]
  1148  	"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",
  1149  	// Both [ v3_req ] and [ req_attributes ]
  1150  	"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",
  1151  }