src/crypto/x509/x509_test.go

   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         "internal/testenv"
  22         "math/big"
  23         "net"
  24         "os/exec"
  25         "reflect"
  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         // This private key includes an invalid prime that
  46         // rsa.PrivateKey.Validate should reject.
  47         data := []byte("0\x16\x02\x00\x02\x02\u007f\x00\x02\x0200\x02\x0200\x02\x02\x00\x01\x02\x02\u007f\x00")
  48         if _, err := ParsePKCS1PrivateKey(data); err == nil {
  49                 t.Errorf("parsing invalid private key did not result in an error")
  50         }
  51 }
  52
  53 func TestParsePKIXPublicKey(t *testing.T) {
  54         block, _ := pem.Decode([]byte(pemPublicKey))
  55         pub, err := ParsePKIXPublicKey(block.Bytes)
  56         if err != nil {
  57                 t.Errorf("Failed to parse RSA public key: %s", err)
  58                 return
  59         }
  60         rsaPub, ok := pub.(*rsa.PublicKey)
  61         if !ok {
  62                 t.Errorf("Value returned from ParsePKIXPublicKey was not an RSA public key")
  63                 return
  64         }
  65
  66         pubBytes2, err := MarshalPKIXPublicKey(rsaPub)
  67         if err != nil {
  68                 t.Errorf("Failed to marshal RSA public key for the second time: %s", err)
  69                 return
  70         }
  71         if !bytes.Equal(pubBytes2, block.Bytes) {
  72                 t.Errorf("Reserialization of public key didn't match. got %x, want %x", pubBytes2, block.Bytes)
  73         }
  74 }
  75
  76 var pemPublicKey = `-----BEGIN PUBLIC KEY-----
  77 MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA3VoPN9PKUjKFLMwOge6+
  78 wnDi8sbETGIx2FKXGgqtAKpzmem53kRGEQg8WeqRmp12wgp74TGpkEXsGae7RS1k
  79 enJCnma4fii+noGH7R0qKgHvPrI2Bwa9hzsH8tHxpyM3qrXslOmD45EH9SxIDUBJ
  80 FehNdaPbLP1gFyahKMsdfxFJLUvbUycuZSJ2ZnIgeVxwm4qbSvZInL9Iu4FzuPtg
  81 fINKcbbovy1qq4KvPIrXzhbY3PWDc6btxCf3SE0JdE1MCPThntB62/bLMSQ7xdDR
  82 FF53oIpvxe/SCOymfWq/LW849Ytv3Xwod0+wzAP8STXG4HSELS4UedPYeHJJJYcZ
  83 +QIDAQAB
  84 -----END PUBLIC KEY-----
  85 `
  86
  87 var pemPrivateKey = `-----BEGIN RSA PRIVATE KEY-----
  88 MIIBOgIBAAJBALKZD0nEffqM1ACuak0bijtqE2QrI/KLADv7l3kK3ppMyCuLKoF0
  89 fd7Ai2KW5ToIwzFofvJcS/STa6HA5gQenRUCAwEAAQJBAIq9amn00aS0h/CrjXqu
  90 /ThglAXJmZhOMPVn4eiu7/ROixi9sex436MaVeMqSNf7Ex9a8fRNfWss7Sqd9eWu
  91 RTUCIQDasvGASLqmjeffBNLTXV2A5g4t+kLVCpsEIZAycV5GswIhANEPLmax0ME/
  92 EO+ZJ79TJKN5yiGBRsv5yvx5UiHxajEXAiAhAol5N4EUyq6I9w1rYdhPMGpLfk7A
  93 IU2snfRJ6Nq2CQIgFrPsWRCkV+gOYcajD17rEqmuLrdIRexpg8N1DOSXoJ8CIGlS
  94 tAboUGBxTDq3ZroNism3DaMIbKPyYrAqhKov1h5V
  95 -----END RSA PRIVATE KEY-----
  96 `
  97
  98 func bigFromString(s string) *big.Int {
  99         ret := new(big.Int)
 100         ret.SetString(s, 10)
 101         return ret
 102 }
 103
 104 func fromBase10(base10 string) *big.Int {
 105         i := new(big.Int)
 106         i.SetString(base10, 10)
 107         return i
 108 }
 109
 110 func bigFromHexString(s string) *big.Int {
 111         ret := new(big.Int)
 112         ret.SetString(s, 16)
 113         return ret
 114 }
 115
 116 var rsaPrivateKey = &rsa.PrivateKey{
 117         PublicKey: rsa.PublicKey{
 118                 N: bigFromString("9353930466774385905609975137998169297361893554149986716853295022578535724979677252958524466350471210367835187480748268864277464700638583474144061408845077"),
 119                 E: 65537,
 120         },
 121         D: bigFromString("7266398431328116344057699379749222532279343923819063639497049039389899328538543087657733766554155839834519529439851673014800261285757759040931985506583861"),
 122         Primes: []*big.Int{
 123                 bigFromString("98920366548084643601728869055592650835572950932266967461790948584315647051443"),
 124                 bigFromString("94560208308847015747498523884063394671606671904944666360068158221458669711639"),
 125         },
 126 }
 127
 128 func TestMarshalRSAPrivateKey(t *testing.T) {
 129         priv := &rsa.PrivateKey{
 130                 PublicKey: rsa.PublicKey{
 131                         N: fromBase10("16346378922382193400538269749936049106320265317511766357599732575277382844051791096569333808598921852351577762718529818072849191122419410612033592401403764925096136759934497687765453905884149505175426053037420486697072448609022753683683718057795566811401938833367954642951433473337066311978821180526439641496973296037000052546108507805269279414789035461158073156772151892452251106173507240488993608650881929629163465099476849643165682709047462010581308719577053905787496296934240246311806555924593059995202856826239801816771116902778517096212527979497399966526283516447337775509777558018145573127308919204297111496233"),
 132                         E: 3,
 133                 },
 134                 D: fromBase10("10897585948254795600358846499957366070880176878341177571733155050184921896034527397712889205732614568234385175145686545381899460748279607074689061600935843283397424506622998458510302603922766336783617368686090042765718290914099334449154829375179958369993407724946186243249568928237086215759259909861748642124071874879861299389874230489928271621259294894142840428407196932444474088857746123104978617098858619445675532587787023228852383149557470077802718705420275739737958953794088728369933811184572620857678792001136676902250566845618813972833750098806496641114644760255910789397593428910198080271317419213080834885003"),
 135                 Primes: []*big.Int{
 136                         fromBase10("1025363189502892836833747188838978207017355117492483312747347695538428729137306368764177201532277413433182799108299960196606011786562992097313508180436744488171474690412562218914213688661311117337381958560443"),
 137                         fromBase10("3467903426626310123395340254094941045497208049900750380025518552334536945536837294961497712862519984786362199788654739924501424784631315081391467293694361474867825728031147665777546570788493758372218019373"),
 138                         fromBase10("4597024781409332673052708605078359346966325141767460991205742124888960305710298765592730135879076084498363772408626791576005136245060321874472727132746643162385746062759369754202494417496879741537284589047"),
 139                 },
 140         }
 141
 142         derBytes := MarshalPKCS1PrivateKey(priv)
 143
 144         priv2, err := ParsePKCS1PrivateKey(derBytes)
 145         if err != nil {
 146                 t.Errorf("error parsing serialized key: %s", err)
 147                 return
 148         }
 149         if priv.PublicKey.N.Cmp(priv2.PublicKey.N) != 0 ||
 150                 priv.PublicKey.E != priv2.PublicKey.E ||
 151                 priv.D.Cmp(priv2.D) != 0 ||
 152                 len(priv2.Primes) != 3 ||
 153                 priv.Primes[0].Cmp(priv2.Primes[0]) != 0 ||
 154                 priv.Primes[1].Cmp(priv2.Primes[1]) != 0 ||
 155                 priv.Primes[2].Cmp(priv2.Primes[2]) != 0 {
 156                 t.Errorf("got:%+v want:%+v", priv, priv2)
 157         }
 158 }
 159
 160 type matchHostnamesTest struct {
 161         pattern, host string
 162         ok            bool
 163 }
 164
 165 var matchHostnamesTests = []matchHostnamesTest{
 166         {"a.b.c", "a.b.c", true},
 167         {"a.b.c", "b.b.c", false},
 168         {"", "b.b.c", false},
 169         {"a.b.c", "", false},
 170         {"example.com", "example.com", true},
 171         {"example.com", "www.example.com", false},
 172         {"*.example.com", "example.com", false},
 173         {"*.example.com", "www.example.com", true},
 174         {"*.example.com", "www.example.com.", true},
 175         {"*.example.com", "xyz.www.example.com", false},
 176         {"*.*.example.com", "xyz.www.example.com", false},
 177         {"*.www.*.com", "xyz.www.example.com", false},
 178         {"*bar.example.com", "foobar.example.com", false},
 179         {"f*.example.com", "foobar.example.com", false},
 180         {"", ".", false},
 181         {".", "", false},
 182         {".", ".", false},
 183         {"example.com", "example.com.", true},
 184         {"example.com.", "example.com", true},
 185         {"example.com.", "example.com.", true},
 186         {"*.com.", "example.com.", true},
 187         {"*.com.", "example.com", true},
 188         {"*.com", "example.com", true},
 189         {"*.com", "example.com.", true},
 190 }
 191
 192 func TestMatchHostnames(t *testing.T) {
 193         for i, test := range matchHostnamesTests {
 194                 r := matchHostnames(test.pattern, test.host)
 195                 if r != test.ok {
 196                         t.Errorf("#%d mismatch got: %t want: %t when matching '%s' against '%s'", i, r, test.ok, test.host, test.pattern)
 197                 }
 198         }
 199 }
 200
 201 func TestMatchIP(t *testing.T) {
 202         // Check that pattern matching is working.
 203         c := &Certificate{
 204                 DNSNames: []string{"*.foo.bar.baz"},
 205                 Subject: pkix.Name{
 206                         CommonName: "*.foo.bar.baz",
 207                 },
 208         }
 209         err := c.VerifyHostname("quux.foo.bar.baz")
 210         if err != nil {
 211                 t.Fatalf("VerifyHostname(quux.foo.bar.baz): %v", err)
 212         }
 213
 214         // But check that if we change it to be matching against an IP address,
 215         // it is rejected.
 216         c = &Certificate{
 217                 DNSNames: []string{"*.2.3.4"},
 218                 Subject: pkix.Name{
 219                         CommonName: "*.2.3.4",
 220                 },
 221         }
 222         err = c.VerifyHostname("1.2.3.4")
 223         if err == nil {
 224                 t.Fatalf("VerifyHostname(1.2.3.4) should have failed, did not")
 225         }
 226
 227         c = &Certificate{
 228                 IPAddresses: []net.IP{net.ParseIP("127.0.0.1"), net.ParseIP("::1")},
 229         }
 230         err = c.VerifyHostname("127.0.0.1")
 231         if err != nil {
 232                 t.Fatalf("VerifyHostname(127.0.0.1): %v", err)
 233         }
 234         err = c.VerifyHostname("::1")
 235         if err != nil {
 236                 t.Fatalf("VerifyHostname(::1): %v", err)
 237         }
 238         err = c.VerifyHostname("[::1]")
 239         if err != nil {
 240                 t.Fatalf("VerifyHostname([::1]): %v", err)
 241         }
 242 }
 243
 244 func TestCertificateParse(t *testing.T) {
 245         s, _ := hex.DecodeString(certBytes)
 246         certs, err := ParseCertificates(s)
 247         if err != nil {
 248                 t.Error(err)
 249         }
 250         if len(certs) != 2 {
 251                 t.Errorf("Wrong number of certs: got %d want 2", len(certs))
 252                 return
 253         }
 254
 255         err = certs[0].CheckSignatureFrom(certs[1])
 256         if err != nil {
 257                 t.Error(err)
 258         }
 259
 260         if err := certs[0].VerifyHostname("mail.google.com"); err != nil {
 261                 t.Error(err)
 262         }
 263
 264         const expectedExtensions = 4
 265         if n := len(certs[0].Extensions); n != expectedExtensions {
 266                 t.Errorf("want %d extensions, got %d", expectedExtensions, n)
 267         }
 268 }
 269
 270 var certBytes = "308203223082028ba00302010202106edf0d9499fd4533dd1297fc42a93be1300d06092a864886" +
 271         "f70d0101050500304c310b3009060355040613025a4131253023060355040a131c546861777465" +
 272         "20436f6e73756c74696e67202850747929204c74642e311630140603550403130d546861777465" +
 273         "20534743204341301e170d3039303332353136343932395a170d3130303332353136343932395a" +
 274         "3069310b3009060355040613025553311330110603550408130a43616c69666f726e6961311630" +
 275         "140603550407130d4d6f756e7461696e205669657731133011060355040a130a476f6f676c6520" +
 276         "496e63311830160603550403130f6d61696c2e676f6f676c652e636f6d30819f300d06092a8648" +
 277         "86f70d010101050003818d0030818902818100c5d6f892fccaf5614b064149e80a2c9581a218ef" +
 278         "41ec35bd7a58125ae76f9ea54ddc893abbeb029f6b73616bf0ffd868791fba7af9c4aebf3706ba" +
 279         "3eeaeed27435b4ddcfb157c05f351d66aa87fee0de072d66d773affbd36ab78bef090e0cc861a9" +
 280         "03ac90dd98b51c9c41566c017f0beec3bff391051ffba0f5cc6850ad2a590203010001a381e730" +
 281         "81e430280603551d250421301f06082b0601050507030106082b06010505070302060960864801" +
 282         "86f842040130360603551d1f042f302d302ba029a0278625687474703a2f2f63726c2e74686177" +
 283         "74652e636f6d2f54686177746553474343412e63726c307206082b060105050701010466306430" +
 284         "2206082b060105050730018616687474703a2f2f6f6373702e7468617774652e636f6d303e0608" +
 285         "2b060105050730028632687474703a2f2f7777772e7468617774652e636f6d2f7265706f736974" +
 286         "6f72792f5468617774655f5347435f43412e637274300c0603551d130101ff04023000300d0609" +
 287         "2a864886f70d01010505000381810062f1f3050ebc105e497c7aedf87e24d2f4a986bb3b837bd1" +
 288         "9b91ebcad98b065992f6bd2b49b7d6d3cb2e427a99d606c7b1d46352527fac39e6a8b6726de5bf" +
 289         "70212a52cba07634a5e332011bd1868e78eb5e3c93cf03072276786f207494feaa0ed9d53b2110" +
 290         "a76571f90209cdae884385c882587030ee15f33d761e2e45a6bc308203233082028ca003020102" +
 291         "020430000002300d06092a864886f70d0101050500305f310b3009060355040613025553311730" +
 292         "15060355040a130e566572695369676e2c20496e632e31373035060355040b132e436c61737320" +
 293         "33205075626c6963205072696d6172792043657274696669636174696f6e20417574686f726974" +
 294         "79301e170d3034303531333030303030305a170d3134303531323233353935395a304c310b3009" +
 295         "060355040613025a4131253023060355040a131c54686177746520436f6e73756c74696e672028" +
 296         "50747929204c74642e311630140603550403130d5468617774652053474320434130819f300d06" +
 297         "092a864886f70d010101050003818d0030818902818100d4d367d08d157faecd31fe7d1d91a13f" +
 298         "0b713cacccc864fb63fc324b0794bd6f80ba2fe10493c033fc093323e90b742b71c403c6d2cde2" +
 299         "2ff50963cdff48a500bfe0e7f388b72d32de9836e60aad007bc4644a3b847503f270927d0e62f5" +
 300         "21ab693684317590f8bfc76c881b06957cc9e5a8de75a12c7a68dfd5ca1c875860190203010001" +
 301         "a381fe3081fb30120603551d130101ff040830060101ff020100300b0603551d0f040403020106" +
 302         "301106096086480186f842010104040302010630280603551d110421301fa41d301b3119301706" +
 303         "035504031310507269766174654c6162656c332d313530310603551d1f042a30283026a024a022" +
 304         "8620687474703a2f2f63726c2e766572697369676e2e636f6d2f706361332e63726c303206082b" +
 305         "0601050507010104263024302206082b060105050730018616687474703a2f2f6f6373702e7468" +
 306         "617774652e636f6d30340603551d25042d302b06082b0601050507030106082b06010505070302" +
 307         "06096086480186f8420401060a6086480186f845010801300d06092a864886f70d010105050003" +
 308         "81810055ac63eadea1ddd2905f9f0bce76be13518f93d9052bc81b774bad6950a1eededcfddb07" +
 309         "e9e83994dcab72792f06bfab8170c4a8edea5334edef1e53d906c7562bd15cf4d18a8eb42bb137" +
 310         "9048084225c53e8acb7feb6f04d16dc574a2f7a27c7b603c77cd0ece48027f012fb69b37e02a2a" +
 311         "36dcd585d6ace53f546f961e05af"
 312
 313 func TestCreateSelfSignedCertificate(t *testing.T) {
 314         random := rand.Reader
 315
 316         block, _ := pem.Decode([]byte(pemPrivateKey))
 317         rsaPriv, err := ParsePKCS1PrivateKey(block.Bytes)
 318         if err != nil {
 319                 t.Fatalf("Failed to parse private key: %s", err)
 320         }
 321
 322         ecdsaPriv, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
 323         if err != nil {
 324                 t.Fatalf("Failed to generate ECDSA key: %s", err)
 325         }
 326
 327         tests := []struct {
 328                 name      string
 329                 pub, priv interface{}
 330                 checkSig  bool
 331                 sigAlgo   SignatureAlgorithm
 332         }{
 333                 {"RSA/RSA", &rsaPriv.PublicKey, rsaPriv, true, SHA1WithRSA},
 334                 {"RSA/ECDSA", &rsaPriv.PublicKey, ecdsaPriv, false, ECDSAWithSHA384},
 335                 {"ECDSA/RSA", &ecdsaPriv.PublicKey, rsaPriv, false, SHA256WithRSA},
 336                 {"ECDSA/ECDSA", &ecdsaPriv.PublicKey, ecdsaPriv, true, ECDSAWithSHA1},
 337         }
 338
 339         testExtKeyUsage := []ExtKeyUsage{ExtKeyUsageClientAuth, ExtKeyUsageServerAuth}
 340         testUnknownExtKeyUsage := []asn1.ObjectIdentifier{[]int{1, 2, 3}, []int{2, 59, 1}}
 341         extraExtensionData := []byte("extra extension")
 342
 343         for _, test := range tests {
 344                 commonName := "test.example.com"
 345                 template := Certificate{
 346                         SerialNumber: big.NewInt(1),
 347                         Subject: pkix.Name{
 348                                 CommonName:   commonName,
 349                                 Organization: []string{"Σ Acme Co"},
 350                                 Country:      []string{"US"},
 351                                 ExtraNames: []pkix.AttributeTypeAndValue{
 352                                         {
 353                                                 Type:  []int{2, 5, 4, 42},
 354                                                 Value: "Gopher",
 355                                         },
 356                                         // This should override the Country, above.
 357                                         {
 358                                                 Type:  []int{2, 5, 4, 6},
 359                                                 Value: "NL",
 360                                         },
 361                                 },
 362                         },
 363                         NotBefore: time.Unix(1000, 0),
 364                         NotAfter:  time.Unix(100000, 0),
 365
 366                         SignatureAlgorithm: test.sigAlgo,
 367
 368                         SubjectKeyId: []byte{1, 2, 3, 4},
 369                         KeyUsage:     KeyUsageCertSign,
 370
 371                         ExtKeyUsage:        testExtKeyUsage,
 372                         UnknownExtKeyUsage: testUnknownExtKeyUsage,
 373
 374                         BasicConstraintsValid: true,
 375                         IsCA: true,
 376
 377                         OCSPServer:            []string{"http://ocsp.example.com"},
 378                         IssuingCertificateURL: []string{"http://crt.example.com/ca1.crt"},
 379
 380                         DNSNames:       []string{"test.example.com"},
 381                         EmailAddresses: []string{"gopher@golang.org"},
 382                         IPAddresses:    []net.IP{net.IPv4(127, 0, 0, 1).To4(), net.ParseIP("2001:4860:0:2001::68")},
 383
 384                         PolicyIdentifiers:   []asn1.ObjectIdentifier{[]int{1, 2, 3}},
 385                         PermittedDNSDomains: []string{".example.com", "example.com"},
 386
 387                         CRLDistributionPoints: []string{"http://crl1.example.com/ca1.crl", "http://crl2.example.com/ca1.crl"},
 388
 389                         ExtraExtensions: []pkix.Extension{
 390                                 {
 391                                         Id:    []int{1, 2, 3, 4},
 392                                         Value: extraExtensionData,
 393                                 },
 394                                 // This extension should override the SubjectKeyId, above.
 395                                 {
 396                                         Id:       oidExtensionSubjectKeyId,
 397                                         Critical: false,
 398                                         Value:    []byte{0x04, 0x04, 4, 3, 2, 1},
 399                                 },
 400                         },
 401                 }
 402
 403                 derBytes, err := CreateCertificate(random, &template, &template, test.pub, test.priv)
 404                 if err != nil {
 405                         t.Errorf("%s: failed to create certificate: %s", test.name, err)
 406                         continue
 407                 }
 408
 409                 cert, err := ParseCertificate(derBytes)
 410                 if err != nil {
 411                         t.Errorf("%s: failed to parse certificate: %s", test.name, err)
 412                         continue
 413                 }
 414
 415                 if len(cert.PolicyIdentifiers) != 1 || !cert.PolicyIdentifiers[0].Equal(template.PolicyIdentifiers[0]) {
 416                         t.Errorf("%s: failed to parse policy identifiers: got:%#v want:%#v", test.name, cert.PolicyIdentifiers, template.PolicyIdentifiers)
 417                 }
 418
 419                 if len(cert.PermittedDNSDomains) != 2 || cert.PermittedDNSDomains[0] != ".example.com" || cert.PermittedDNSDomains[1] != "example.com" {
 420                         t.Errorf("%s: failed to parse name constraints: %#v", test.name, cert.PermittedDNSDomains)
 421                 }
 422
 423                 if cert.Subject.CommonName != commonName {
 424                         t.Errorf("%s: subject wasn't correctly copied from the template. Got %s, want %s", test.name, cert.Subject.CommonName, commonName)
 425                 }
 426
 427                 if len(cert.Subject.Country) != 1 || cert.Subject.Country[0] != "NL" {
 428                         t.Errorf("%s: ExtraNames didn't override Country", test.name)
 429                 }
 430
 431                 found := false
 432                 for _, atv := range cert.Subject.Names {
 433                         if atv.Type.Equal([]int{2, 5, 4, 42}) {
 434                                 found = true
 435                                 break
 436                         }
 437                 }
 438                 if !found {
 439                         t.Errorf("%s: Names didn't contain oid 2.5.4.42 from ExtraNames", test.name)
 440                 }
 441
 442                 if cert.Issuer.CommonName != commonName {
 443                         t.Errorf("%s: issuer wasn't correctly copied from the template. Got %s, want %s", test.name, cert.Issuer.CommonName, commonName)
 444                 }
 445
 446                 if cert.SignatureAlgorithm != test.sigAlgo {
 447                         t.Errorf("%s: SignatureAlgorithm wasn't copied from template. Got %v, want %v", test.name, cert.SignatureAlgorithm, test.sigAlgo)
 448                 }
 449
 450                 if !reflect.DeepEqual(cert.ExtKeyUsage, testExtKeyUsage) {
 451                         t.Errorf("%s: extkeyusage wasn't correctly copied from the template. Got %v, want %v", test.name, cert.ExtKeyUsage, testExtKeyUsage)
 452                 }
 453
 454                 if !reflect.DeepEqual(cert.UnknownExtKeyUsage, testUnknownExtKeyUsage) {
 455                         t.Errorf("%s: unknown extkeyusage wasn't correctly copied from the template. Got %v, want %v", test.name, cert.UnknownExtKeyUsage, testUnknownExtKeyUsage)
 456                 }
 457
 458                 if !reflect.DeepEqual(cert.OCSPServer, template.OCSPServer) {
 459                         t.Errorf("%s: OCSP servers differ from template. Got %v, want %v", test.name, cert.OCSPServer, template.OCSPServer)
 460                 }
 461
 462                 if !reflect.DeepEqual(cert.IssuingCertificateURL, template.IssuingCertificateURL) {
 463                         t.Errorf("%s: Issuing certificate URLs differ from template. Got %v, want %v", test.name, cert.IssuingCertificateURL, template.IssuingCertificateURL)
 464                 }
 465
 466                 if !reflect.DeepEqual(cert.DNSNames, template.DNSNames) {
 467                         t.Errorf("%s: SAN DNS names differ from template. Got %v, want %v", test.name, cert.DNSNames, template.DNSNames)
 468                 }
 469
 470                 if !reflect.DeepEqual(cert.EmailAddresses, template.EmailAddresses) {
 471                         t.Errorf("%s: SAN emails differ from template. Got %v, want %v", test.name, cert.EmailAddresses, template.EmailAddresses)
 472                 }
 473
 474                 if !reflect.DeepEqual(cert.IPAddresses, template.IPAddresses) {
 475                         t.Errorf("%s: SAN IPs differ from template. Got %v, want %v", test.name, cert.IPAddresses, template.IPAddresses)
 476                 }
 477
 478                 if !reflect.DeepEqual(cert.CRLDistributionPoints, template.CRLDistributionPoints) {
 479                         t.Errorf("%s: CRL distribution points differ from template. Got %v, want %v", test.name, cert.CRLDistributionPoints, template.CRLDistributionPoints)
 480                 }
 481
 482                 if !bytes.Equal(cert.SubjectKeyId, []byte{4, 3, 2, 1}) {
 483                         t.Errorf("%s: ExtraExtensions didn't override SubjectKeyId", test.name)
 484                 }
 485
 486                 if bytes.Index(derBytes, extraExtensionData) == -1 {
 487                         t.Errorf("%s: didn't find extra extension in DER output", test.name)
 488                 }
 489
 490                 if test.checkSig {
 491                         err = cert.CheckSignatureFrom(cert)
 492                         if err != nil {
 493                                 t.Errorf("%s: signature verification failed: %s", test.name, err)
 494                         }
 495                 }
 496         }
 497 }
 498
 499 func TestUnknownCriticalExtension(t *testing.T) {
 500         priv, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
 501         if err != nil {
 502                 t.Fatalf("Failed to generate ECDSA key: %s", err)
 503         }
 504
 505         oids := []asn1.ObjectIdentifier{
 506                 // This OID is in the PKIX arc, but unknown.
 507                 {2, 5, 29, 999999},
 508                 // This is a nonsense, unassigned OID.
 509                 {1, 2, 3, 4},
 510         }
 511
 512         for _, oid := range oids {
 513                 template := Certificate{
 514                         SerialNumber: big.NewInt(1),
 515                         Subject: pkix.Name{
 516                                 CommonName: "foo",
 517                         },
 518                         NotBefore: time.Unix(1000, 0),
 519                         NotAfter:  time.Now().AddDate(1, 0, 0),
 520
 521                         BasicConstraintsValid: true,
 522                         IsCA: true,
 523
 524                         KeyUsage:    KeyUsageCertSign,
 525                         ExtKeyUsage: []ExtKeyUsage{ExtKeyUsageServerAuth},
 526
 527                         ExtraExtensions: []pkix.Extension{
 528                                 {
 529                                         Id:       oid,
 530                                         Critical: true,
 531                                         Value:    nil,
 532                                 },
 533                         },
 534                 }
 535
 536                 derBytes, err := CreateCertificate(rand.Reader, &template, &template, &priv.PublicKey, priv)
 537                 if err != nil {
 538                         t.Fatalf("failed to create certificate: %s", err)
 539                 }
 540
 541                 cert, err := ParseCertificate(derBytes)
 542                 if err != nil {
 543                         t.Fatalf("Certificate with unknown critical extension was not parsed: %s", err)
 544                 }
 545
 546                 roots := NewCertPool()
 547                 roots.AddCert(cert)
 548
 549                 // Setting Roots ensures that Verify won't delegate to the OS
 550                 // library and thus the correct error should always be
 551                 // returned.
 552                 _, err = cert.Verify(VerifyOptions{Roots: roots})
 553                 if err == nil {
 554                         t.Fatal("Certificate with unknown critical extension was verified without error")
 555                 }
 556                 if _, ok := err.(UnhandledCriticalExtension); !ok {
 557                         t.Fatalf("Error was %#v, but wanted one of type UnhandledCriticalExtension", err)
 558                 }
 559
 560                 cert.UnhandledCriticalExtensions = nil
 561                 if _, err = cert.Verify(VerifyOptions{Roots: roots}); err != nil {
 562                         t.Errorf("Certificate failed to verify after unhandled critical extensions were cleared: %s", err)
 563                 }
 564         }
 565 }
 566
 567 // Self-signed certificate using ECDSA with SHA1 & secp256r1
 568 var ecdsaSHA1CertPem = `
 569 -----BEGIN CERTIFICATE-----
 570 MIICDjCCAbUCCQDF6SfN0nsnrjAJBgcqhkjOPQQBMIGPMQswCQYDVQQGEwJVUzET
 571 MBEGA1UECAwKQ2FsaWZvcm5pYTEWMBQGA1UEBwwNTW91bnRhaW4gVmlldzEVMBMG
 572 A1UECgwMR29vZ2xlLCBJbmMuMRcwFQYDVQQDDA53d3cuZ29vZ2xlLmNvbTEjMCEG
 573 CSqGSIb3DQEJARYUZ29sYW5nLWRldkBnbWFpbC5jb20wHhcNMTIwNTIwMjAyMDUw
 574 WhcNMjIwNTE4MjAyMDUwWjCBjzELMAkGA1UEBhMCVVMxEzARBgNVBAgMCkNhbGlm
 575 b3JuaWExFjAUBgNVBAcMDU1vdW50YWluIFZpZXcxFTATBgNVBAoMDEdvb2dsZSwg
 576 SW5jLjEXMBUGA1UEAwwOd3d3Lmdvb2dsZS5jb20xIzAhBgkqhkiG9w0BCQEWFGdv
 577 bGFuZy1kZXZAZ21haWwuY29tMFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAE/Wgn
 578 WQDo5+bz71T0327ERgd5SDDXFbXLpzIZDXTkjpe8QTEbsF+ezsQfrekrpDPC4Cd3
 579 P9LY0tG+aI8IyVKdUjAJBgcqhkjOPQQBA0gAMEUCIGlsqMcRqWVIWTD6wXwe6Jk2
 580 DKxL46r/FLgJYnzBEH99AiEA3fBouObsvV1R3oVkb4BQYnD4/4LeId6lAT43YvyV
 581 a/A=
 582 -----END CERTIFICATE-----
 583 `
 584
 585 // Self-signed certificate using ECDSA with SHA256 & secp256r1
 586 var ecdsaSHA256p256CertPem = `
 587 -----BEGIN CERTIFICATE-----
 588 MIICDzCCAbYCCQDlsuMWvgQzhTAKBggqhkjOPQQDAjCBjzELMAkGA1UEBhMCVVMx
 589 EzARBgNVBAgMCkNhbGlmb3JuaWExFjAUBgNVBAcMDU1vdW50YWluIFZpZXcxFTAT
 590 BgNVBAoMDEdvb2dsZSwgSW5jLjEXMBUGA1UEAwwOd3d3Lmdvb2dsZS5jb20xIzAh
 591 BgkqhkiG9w0BCQEWFGdvbGFuZy1kZXZAZ21haWwuY29tMB4XDTEyMDUyMTAwMTkx
 592 NloXDTIyMDUxOTAwMTkxNlowgY8xCzAJBgNVBAYTAlVTMRMwEQYDVQQIDApDYWxp
 593 Zm9ybmlhMRYwFAYDVQQHDA1Nb3VudGFpbiBWaWV3MRUwEwYDVQQKDAxHb29nbGUs
 594 IEluYy4xFzAVBgNVBAMMDnd3dy5nb29nbGUuY29tMSMwIQYJKoZIhvcNAQkBFhRn
 595 b2xhbmctZGV2QGdtYWlsLmNvbTBZMBMGByqGSM49AgEGCCqGSM49AwEHA0IABPMt
 596 2ErhxAty5EJRu9yM+MTy+hUXm3pdW1ensAv382KoGExSXAFWP7pjJnNtHO+XSwVm
 597 YNtqjcAGFKpweoN//kQwCgYIKoZIzj0EAwIDRwAwRAIgIYSaUA/IB81gjbIw/hUV
 598 70twxJr5EcgOo0hLp3Jm+EYCIFDO3NNcgmURbJ1kfoS3N/0O+irUtoPw38YoNkqJ
 599 h5wi
 600 -----END CERTIFICATE-----
 601 `
 602
 603 // Self-signed certificate using ECDSA with SHA256 & secp384r1
 604 var ecdsaSHA256p384CertPem = `
 605 -----BEGIN CERTIFICATE-----
 606 MIICSjCCAdECCQDje/no7mXkVzAKBggqhkjOPQQDAjCBjjELMAkGA1UEBhMCVVMx
 607 EzARBgNVBAgMCkNhbGlmb3JuaWExFjAUBgNVBAcMDU1vdW50YWluIFZpZXcxFDAS
 608 BgNVBAoMC0dvb2dsZSwgSW5jMRcwFQYDVQQDDA53d3cuZ29vZ2xlLmNvbTEjMCEG
 609 CSqGSIb3DQEJARYUZ29sYW5nLWRldkBnbWFpbC5jb20wHhcNMTIwNTIxMDYxMDM0
 610 WhcNMjIwNTE5MDYxMDM0WjCBjjELMAkGA1UEBhMCVVMxEzARBgNVBAgMCkNhbGlm
 611 b3JuaWExFjAUBgNVBAcMDU1vdW50YWluIFZpZXcxFDASBgNVBAoMC0dvb2dsZSwg
 612 SW5jMRcwFQYDVQQDDA53d3cuZ29vZ2xlLmNvbTEjMCEGCSqGSIb3DQEJARYUZ29s
 613 YW5nLWRldkBnbWFpbC5jb20wdjAQBgcqhkjOPQIBBgUrgQQAIgNiAARRuzRNIKRK
 614 jIktEmXanNmrTR/q/FaHXLhWRZ6nHWe26Fw7Rsrbk+VjGy4vfWtNn7xSFKrOu5ze
 615 qxKnmE0h5E480MNgrUiRkaGO2GMJJVmxx20aqkXOk59U8yGA4CghE6MwCgYIKoZI
 616 zj0EAwIDZwAwZAIwBZEN8gvmRmfeP/9C1PRLzODIY4JqWub2PLRT4mv9GU+yw3Gr
 617 PU9A3CHMdEcdw/MEAjBBO1lId8KOCh9UZunsSMfqXiVurpzmhWd6VYZ/32G+M+Mh
 618 3yILeYQzllt/g0rKVRk=
 619 -----END CERTIFICATE-----
 620 `
 621
 622 // Self-signed certificate using ECDSA with SHA384 & secp521r1
 623 var ecdsaSHA384p521CertPem = `
 624 -----BEGIN CERTIFICATE-----
 625 MIICljCCAfcCCQDhp1AFD/ahKjAKBggqhkjOPQQDAzCBjjELMAkGA1UEBhMCVVMx
 626 EzARBgNVBAgMCkNhbGlmb3JuaWExFjAUBgNVBAcMDU1vdW50YWluIFZpZXcxFDAS
 627 BgNVBAoMC0dvb2dsZSwgSW5jMRcwFQYDVQQDDA53d3cuZ29vZ2xlLmNvbTEjMCEG
 628 CSqGSIb3DQEJARYUZ29sYW5nLWRldkBnbWFpbC5jb20wHhcNMTIwNTIxMTUwNDI5
 629 WhcNMjIwNTE5MTUwNDI5WjCBjjELMAkGA1UEBhMCVVMxEzARBgNVBAgMCkNhbGlm
 630 b3JuaWExFjAUBgNVBAcMDU1vdW50YWluIFZpZXcxFDASBgNVBAoMC0dvb2dsZSwg
 631 SW5jMRcwFQYDVQQDDA53d3cuZ29vZ2xlLmNvbTEjMCEGCSqGSIb3DQEJARYUZ29s
 632 YW5nLWRldkBnbWFpbC5jb20wgZswEAYHKoZIzj0CAQYFK4EEACMDgYYABACqx9Rv
 633 IssRs1LWYcNN+WffwlHw4Tv3y8/LIAA9MF1ZScIonU9nRMxt4a2uGJVCPDw6JHpz
 634 PaYc0E9puLoE9AfKpwFr59Jkot7dBg55SKPEFkddoip/rvmN7NPAWjMBirOwjOkm
 635 8FPthvPhGPqsu9AvgVuHu3PosWiHGNrhh379pva8MzAKBggqhkjOPQQDAwOBjAAw
 636 gYgCQgEHNmswkUdPpHqrVxp9PvLVl+xxPuHBkT+75z9JizyxtqykHQo9Uh6SWCYH
 637 BF9KLolo01wMt8DjoYP5Fb3j5MH7xwJCAbWZzTOp4l4DPkIvAh4LeC4VWbwPPyqh
 638 kBg71w/iEcSY3wUKgHGcJJrObZw7wys91I5kENljqw/Samdr3ka+jBJa
 639 -----END CERTIFICATE-----
 640 `
 641
 642 var ecdsaTests = []struct {
 643         sigAlgo SignatureAlgorithm
 644         pemCert string
 645 }{
 646         {ECDSAWithSHA1, ecdsaSHA1CertPem},
 647         {ECDSAWithSHA256, ecdsaSHA256p256CertPem},
 648         {ECDSAWithSHA256, ecdsaSHA256p384CertPem},
 649         {ECDSAWithSHA384, ecdsaSHA384p521CertPem},
 650 }
 651
 652 func TestECDSA(t *testing.T) {
 653         for i, test := range ecdsaTests {
 654                 pemBlock, _ := pem.Decode([]byte(test.pemCert))
 655                 cert, err := ParseCertificate(pemBlock.Bytes)
 656                 if err != nil {
 657                         t.Errorf("%d: failed to parse certificate: %s", i, err)
 658                         continue
 659                 }
 660                 if sa := cert.SignatureAlgorithm; sa != test.sigAlgo {
 661                         t.Errorf("%d: signature algorithm is %v, want %v", i, sa, test.sigAlgo)
 662                 }
 663                 if parsedKey, ok := cert.PublicKey.(*ecdsa.PublicKey); !ok {
 664                         t.Errorf("%d: wanted an ECDSA public key but found: %#v", i, parsedKey)
 665                 }
 666                 if pka := cert.PublicKeyAlgorithm; pka != ECDSA {
 667                         t.Errorf("%d: public key algorithm is %v, want ECDSA", i, pka)
 668                 }
 669                 if err = cert.CheckSignatureFrom(cert); err != nil {
 670                         t.Errorf("%d: certificate verification failed: %s", i, err)
 671                 }
 672         }
 673 }
 674
 675 // Self-signed certificate using DSA with SHA1
 676 var dsaCertPem = `-----BEGIN CERTIFICATE-----
 677 MIIEDTCCA82gAwIBAgIJALHPghaoxeDhMAkGByqGSM44BAMweTELMAkGA1UEBhMC
 678 VVMxCzAJBgNVBAgTAk5DMQ8wDQYDVQQHEwZOZXd0b24xFDASBgNVBAoTC0dvb2ds
 679 ZSwgSW5jMRIwEAYDVQQDEwlKb24gQWxsaWUxIjAgBgkqhkiG9w0BCQEWE2pvbmFs
 680 bGllQGdvb2dsZS5jb20wHhcNMTEwNTE0MDMwMTQ1WhcNMTEwNjEzMDMwMTQ1WjB5
 681 MQswCQYDVQQGEwJVUzELMAkGA1UECBMCTkMxDzANBgNVBAcTBk5ld3RvbjEUMBIG
 682 A1UEChMLR29vZ2xlLCBJbmMxEjAQBgNVBAMTCUpvbiBBbGxpZTEiMCAGCSqGSIb3
 683 DQEJARYTam9uYWxsaWVAZ29vZ2xlLmNvbTCCAbcwggEsBgcqhkjOOAQBMIIBHwKB
 684 gQC8hLUnQ7FpFYu4WXTj6DKvXvz8QrJkNJCVMTpKAT7uBpobk32S5RrPKXocd4gN
 685 8lyGB9ggS03EVlEwXvSmO0DH2MQtke2jl9j1HLydClMf4sbx5V6TV9IFw505U1iW
 686 jL7awRMgxge+FsudtJK254FjMFo03ZnOQ8ZJJ9E6AEDrlwIVAJpnBn9moyP11Ox5
 687 Asc/5dnjb6dPAoGBAJFHd4KVv1iTVCvEG6gGiYop5DJh28hUQcN9kul+2A0yPUSC
 688 X93oN00P8Vh3eYgSaCWZsha7zDG53MrVJ0Zf6v/X/CoZNhLldeNOepivTRAzn+Rz
 689 kKUYy5l1sxYLHQKF0UGNCXfFKZT0PCmgU+PWhYNBBMn6/cIh44vp85ideo5CA4GE
 690 AAKBgFmifCafzeRaohYKXJgMGSEaggCVCRq5xdyDCat+wbOkjC4mfG01/um3G8u5
 691 LxasjlWRKTR/tcAL7t0QuokVyQaYdVypZXNaMtx1db7YBuHjj3aP+8JOQRI9xz8c
 692 bp5NDJ5pISiFOv4p3GZfqZPcqckDt78AtkQrmnal2txhhjF6o4HeMIHbMB0GA1Ud
 693 DgQWBBQVyyr7hO11ZFFpWX50298Sa3V+rzCBqwYDVR0jBIGjMIGggBQVyyr7hO11
 694 ZFFpWX50298Sa3V+r6F9pHsweTELMAkGA1UEBhMCVVMxCzAJBgNVBAgTAk5DMQ8w
 695 DQYDVQQHEwZOZXd0b24xFDASBgNVBAoTC0dvb2dsZSwgSW5jMRIwEAYDVQQDEwlK
 696 b24gQWxsaWUxIjAgBgkqhkiG9w0BCQEWE2pvbmFsbGllQGdvb2dsZS5jb22CCQCx
 697 z4IWqMXg4TAMBgNVHRMEBTADAQH/MAkGByqGSM44BAMDLwAwLAIUPtn/5j8Q1jJI
 698 7ggOIsgrhgUdjGQCFCsmDq1H11q9+9Wp9IMeGrTSKHIM
 699 -----END CERTIFICATE-----
 700 `
 701
 702 func TestParseCertificateWithDsaPublicKey(t *testing.T) {
 703         expectedKey := &dsa.PublicKey{
 704                 Parameters: dsa.Parameters{
 705                         P: bigFromHexString("00BC84B52743B169158BB85974E3E832AF5EFCFC42B264349095313A4A013EEE069A1B937D92E51ACF297A1C77880DF25C8607D8204B4DC45651305EF4A63B40C7D8C42D91EDA397D8F51CBC9D0A531FE2C6F1E55E9357D205C39D395358968CBEDAC11320C607BE16CB9DB492B6E78163305A34DD99CE43C64927D13A0040EB97"),
 706                         Q: bigFromHexString("009A67067F66A323F5D4EC7902C73FE5D9E36FA74F"),
 707                         G: bigFromHexString("009147778295BF5893542BC41BA806898A29E43261DBC85441C37D92E97ED80D323D44825FDDE8374D0FF15877798812682599B216BBCC31B9DCCAD527465FEAFFD7FC2A193612E575E34E7A98AF4D10339FE47390A518CB9975B3160B1D0285D1418D0977C52994F43C29A053E3D685834104C9FAFDC221E38BE9F3989D7A8E42"),
 708                 },
 709                 Y: bigFromHexString("59A27C269FCDE45AA2160A5C980C19211A820095091AB9C5DC8309AB7EC1B3A48C2E267C6D35FEE9B71BCBB92F16AC8E559129347FB5C00BEEDD10BA8915C90698755CA965735A32DC7575BED806E1E38F768FFBC24E41123DC73F1C6E9E4D0C9E692128853AFE29DC665FA993DCA9C903B7BF00B6442B9A76A5DADC6186317A"),
 710         }
 711         pemBlock, _ := pem.Decode([]byte(dsaCertPem))
 712         cert, err := ParseCertificate(pemBlock.Bytes)
 713         if err != nil {
 714                 t.Fatalf("Failed to parse certificate: %s", err)
 715         }
 716         if cert.PublicKeyAlgorithm != DSA {
 717                 t.Errorf("Parsed key algorithm was not DSA")
 718         }
 719         parsedKey, ok := cert.PublicKey.(*dsa.PublicKey)
 720         if !ok {
 721                 t.Fatalf("Parsed key was not a DSA key: %s", err)
 722         }
 723         if expectedKey.Y.Cmp(parsedKey.Y) != 0 ||
 724                 expectedKey.P.Cmp(parsedKey.P) != 0 ||
 725                 expectedKey.Q.Cmp(parsedKey.Q) != 0 ||
 726                 expectedKey.G.Cmp(parsedKey.G) != 0 {
 727                 t.Fatal("Parsed key differs from expected key")
 728         }
 729 }
 730
 731 func TestParseCertificateWithDSASignatureAlgorithm(t *testing.T) {
 732         pemBlock, _ := pem.Decode([]byte(dsaCertPem))
 733         cert, err := ParseCertificate(pemBlock.Bytes)
 734         if err != nil {
 735                 t.Fatalf("Failed to parse certificate: %s", err)
 736         }
 737         if cert.SignatureAlgorithm != DSAWithSHA1 {
 738                 t.Errorf("Parsed signature algorithm was not DSAWithSHA1")
 739         }
 740 }
 741
 742 func TestVerifyCertificateWithDSASignature(t *testing.T) {
 743         pemBlock, _ := pem.Decode([]byte(dsaCertPem))
 744         cert, err := ParseCertificate(pemBlock.Bytes)
 745         if err != nil {
 746                 t.Fatalf("Failed to parse certificate: %s", err)
 747         }
 748         // test cert is self-signed
 749         if err = cert.CheckSignatureFrom(cert); err != nil {
 750                 t.Fatalf("DSA Certificate verification failed: %s", err)
 751         }
 752 }
 753
 754 const pemCertificate = `-----BEGIN CERTIFICATE-----
 755 MIIB5DCCAZCgAwIBAgIBATALBgkqhkiG9w0BAQUwLTEQMA4GA1UEChMHQWNtZSBDbzEZMBcGA1UE
 756 AxMQdGVzdC5leGFtcGxlLmNvbTAeFw03MDAxMDEwMDE2NDBaFw03MDAxMDIwMzQ2NDBaMC0xEDAO
 757 BgNVBAoTB0FjbWUgQ28xGTAXBgNVBAMTEHRlc3QuZXhhbXBsZS5jb20wWjALBgkqhkiG9w0BAQED
 758 SwAwSAJBALKZD0nEffqM1ACuak0bijtqE2QrI/KLADv7l3kK3ppMyCuLKoF0fd7Ai2KW5ToIwzFo
 759 fvJcS/STa6HA5gQenRUCAwEAAaOBnjCBmzAOBgNVHQ8BAf8EBAMCAAQwDwYDVR0TAQH/BAUwAwEB
 760 /zANBgNVHQ4EBgQEAQIDBDAPBgNVHSMECDAGgAQBAgMEMBsGA1UdEQQUMBKCEHRlc3QuZXhhbXBs
 761 ZS5jb20wDwYDVR0gBAgwBjAEBgIqAzAqBgNVHR4EIzAhoB8wDoIMLmV4YW1wbGUuY29tMA2CC2V4
 762 YW1wbGUuY29tMAsGCSqGSIb3DQEBBQNBAHKZKoS1wEQOGhgklx4+/yFYQlnqwKXvar/ZecQvJwui
 763 0seMQnwBhwdBkHfVIU2Fu5VUMRyxlf0ZNaDXcpU581k=
 764 -----END CERTIFICATE-----`
 765
 766 func TestCRLCreation(t *testing.T) {
 767         block, _ := pem.Decode([]byte(pemPrivateKey))
 768         priv, _ := ParsePKCS1PrivateKey(block.Bytes)
 769         block, _ = pem.Decode([]byte(pemCertificate))
 770         cert, _ := ParseCertificate(block.Bytes)
 771
 772         now := time.Unix(1000, 0)
 773         expiry := time.Unix(10000, 0)
 774
 775         revokedCerts := []pkix.RevokedCertificate{
 776                 {
 777                         SerialNumber:   big.NewInt(1),
 778                         RevocationTime: now,
 779                 },
 780                 {
 781                         SerialNumber:   big.NewInt(42),
 782                         RevocationTime: now,
 783                 },
 784         }
 785
 786         crlBytes, err := cert.CreateCRL(rand.Reader, priv, revokedCerts, now, expiry)
 787         if err != nil {
 788                 t.Errorf("error creating CRL: %s", err)
 789         }
 790
 791         _, err = ParseDERCRL(crlBytes)
 792         if err != nil {
 793                 t.Errorf("error reparsing CRL: %s", err)
 794         }
 795 }
 796
 797 func fromBase64(in string) []byte {
 798         out := make([]byte, base64.StdEncoding.DecodedLen(len(in)))
 799         n, err := base64.StdEncoding.Decode(out, []byte(in))
 800         if err != nil {
 801                 panic("failed to base64 decode")
 802         }
 803         return out[:n]
 804 }
 805
 806 func TestParseDERCRL(t *testing.T) {
 807         derBytes := fromBase64(derCRLBase64)
 808         certList, err := ParseDERCRL(derBytes)
 809         if err != nil {
 810                 t.Errorf("error parsing: %s", err)
 811                 return
 812         }
 813         numCerts := len(certList.TBSCertList.RevokedCertificates)
 814         expected := 88
 815         if numCerts != expected {
 816                 t.Errorf("bad number of revoked certificates. got: %d want: %d", numCerts, expected)
 817         }
 818
 819         if certList.HasExpired(time.Unix(1302517272, 0)) {
 820                 t.Errorf("CRL has expired (but shouldn't have)")
 821         }
 822
 823         // Can't check the signature here without a package cycle.
 824 }
 825
 826 func TestCRLWithoutExpiry(t *testing.T) {
 827         derBytes := fromBase64("MIHYMIGZMAkGByqGSM44BAMwEjEQMA4GA1UEAxMHQ2FybERTUxcNOTkwODI3MDcwMDAwWjBpMBMCAgDIFw05OTA4MjIwNzAwMDBaMBMCAgDJFw05OTA4MjIwNzAwMDBaMBMCAgDTFw05OTA4MjIwNzAwMDBaMBMCAgDSFw05OTA4MjIwNzAwMDBaMBMCAgDUFw05OTA4MjQwNzAwMDBaMAkGByqGSM44BAMDLwAwLAIUfmVSdjP+NHMX0feW+aDU2G1cfT0CFAJ6W7fVWxjBz4fvftok8yqDnDWh")
 828         certList, err := ParseDERCRL(derBytes)
 829         if err != nil {
 830                 t.Fatal(err)
 831         }
 832         if !certList.TBSCertList.NextUpdate.IsZero() {
 833                 t.Errorf("NextUpdate is not the zero value")
 834         }
 835 }
 836
 837 func TestParsePEMCRL(t *testing.T) {
 838         pemBytes := fromBase64(pemCRLBase64)
 839         certList, err := ParseCRL(pemBytes)
 840         if err != nil {
 841                 t.Errorf("error parsing: %s", err)
 842                 return
 843         }
 844         numCerts := len(certList.TBSCertList.RevokedCertificates)
 845         expected := 2
 846         if numCerts != expected {
 847                 t.Errorf("bad number of revoked certificates. got: %d want: %d", numCerts, expected)
 848         }
 849
 850         if certList.HasExpired(time.Unix(1302517272, 0)) {
 851                 t.Errorf("CRL has expired (but shouldn't have)")
 852         }
 853
 854         // Can't check the signature here without a package cycle.
 855 }
 856
 857 func TestImports(t *testing.T) {
 858         testenv.MustHaveGoRun(t)
 859
 860         if err := exec.Command("go", "run", "x509_test_import.go").Run(); err != nil {
 861                 t.Errorf("failed to run x509_test_import.go: %s", err)
 862         }
 863 }
 864
 865 const derCRLBase64 = "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"
 866
 867 const pemCRLBase64 = "LS0tLS1CRUdJTiBYNTA5IENSTC0tLS0tDQpNSUlCOWpDQ0FWOENBUUV3RFFZSktvWklodmNOQVFFRkJRQXdiREVhTUJnR0ExVUVDaE1SVWxOQklGTmxZM1Z5DQphWFI1SUVsdVl5NHhIakFjQmdOVkJBTVRGVkpUUVNCUWRXSnNhV01nVW05dmRDQkRRU0IyTVRFdU1Dd0dDU3FHDQpTSWIzRFFFSkFSWWZjbk5oYTJWdmJuSnZiM1J6YVdkdVFISnpZWE5sWTNWeWFYUjVMbU52YlJjTk1URXdNakl6DQpNVGt5T0RNd1doY05NVEV3T0RJeU1Ua3lPRE13V2pDQmpEQktBaEVBckRxb2g5RkhKSFhUN09QZ3V1bjQrQmNODQpNRGt4TVRBeU1UUXlOekE1V2pBbU1Bb0dBMVVkRlFRRENnRUpNQmdHQTFVZEdBUVJHQTh5TURBNU1URXdNakUwDQpNalExTlZvd1BnSVJBTEd6blowOTVQQjVhQU9MUGc1N2ZNTVhEVEF5TVRBeU16RTBOVEF4TkZvd0dqQVlCZ05WDQpIUmdFRVJnUE1qQXdNakV3TWpNeE5EVXdNVFJhb0RBd0xqQWZCZ05WSFNNRUdEQVdnQlQxVERGNlVRTS9MTmVMDQpsNWx2cUhHUXEzZzltekFMQmdOVkhSUUVCQUlDQUlRd0RRWUpLb1pJaHZjTkFRRUZCUUFEZ1lFQUZVNUFzNk16DQpxNVBSc2lmYW9iUVBHaDFhSkx5QytNczVBZ2MwYld5QTNHQWR4dXI1U3BQWmVSV0NCamlQL01FSEJXSkNsQkhQDQpHUmNxNXlJZDNFakRrYUV5eFJhK2k2N0x6dmhJNmMyOUVlNks5cFNZd2ppLzdSVWhtbW5Qclh0VHhsTDBsckxyDQptUVFKNnhoRFJhNUczUUE0Q21VZHNITnZicnpnbUNZcHZWRT0NCi0tLS0tRU5EIFg1MDkgQ1JMLS0tLS0NCg0K"
 868
 869 func TestCreateCertificateRequest(t *testing.T) {
 870         random := rand.Reader
 871
 872         block, _ := pem.Decode([]byte(pemPrivateKey))
 873         rsaPriv, err := ParsePKCS1PrivateKey(block.Bytes)
 874         if err != nil {
 875                 t.Fatalf("Failed to parse private key: %s", err)
 876         }
 877
 878         ecdsa256Priv, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
 879         if err != nil {
 880                 t.Fatalf("Failed to generate ECDSA key: %s", err)
 881         }
 882
 883         ecdsa384Priv, err := ecdsa.GenerateKey(elliptic.P384(), rand.Reader)
 884         if err != nil {
 885                 t.Fatalf("Failed to generate ECDSA key: %s", err)
 886         }
 887
 888         ecdsa521Priv, err := ecdsa.GenerateKey(elliptic.P521(), rand.Reader)
 889         if err != nil {
 890                 t.Fatalf("Failed to generate ECDSA key: %s", err)
 891         }
 892
 893         tests := []struct {
 894                 name    string
 895                 priv    interface{}
 896                 sigAlgo SignatureAlgorithm
 897         }{
 898                 {"RSA", rsaPriv, SHA1WithRSA},
 899                 {"ECDSA-256", ecdsa256Priv, ECDSAWithSHA1},
 900                 {"ECDSA-384", ecdsa384Priv, ECDSAWithSHA1},
 901                 {"ECDSA-521", ecdsa521Priv, ECDSAWithSHA1},
 902         }
 903
 904         for _, test := range tests {
 905                 template := CertificateRequest{
 906                         Subject: pkix.Name{
 907                                 CommonName:   "test.example.com",
 908                                 Organization: []string{"Σ Acme Co"},
 909                         },
 910                         SignatureAlgorithm: test.sigAlgo,
 911                         DNSNames:           []string{"test.example.com"},
 912                         EmailAddresses:     []string{"gopher@golang.org"},
 913                         IPAddresses:        []net.IP{net.IPv4(127, 0, 0, 1).To4(), net.ParseIP("2001:4860:0:2001::68")},
 914                 }
 915
 916                 derBytes, err := CreateCertificateRequest(random, &template, test.priv)
 917                 if err != nil {
 918                         t.Errorf("%s: failed to create certificate request: %s", test.name, err)
 919                         continue
 920                 }
 921
 922                 out, err := ParseCertificateRequest(derBytes)
 923                 if err != nil {
 924                         t.Errorf("%s: failed to create certificate request: %s", test.name, err)
 925                         continue
 926                 }
 927
 928                 err = out.CheckSignature()
 929                 if err != nil {
 930                         t.Errorf("%s: failed to check certificate request signature: %s", test.name, err)
 931                         continue
 932                 }
 933
 934                 if out.Subject.CommonName != template.Subject.CommonName {
 935                         t.Errorf("%s: output subject common name and template subject common name don't match", test.name)
 936                 } else if len(out.Subject.Organization) != len(template.Subject.Organization) {
 937                         t.Errorf("%s: output subject organisation and template subject organisation don't match", test.name)
 938                 } else if len(out.DNSNames) != len(template.DNSNames) {
 939                         t.Errorf("%s: output DNS names and template DNS names don't match", test.name)
 940                 } else if len(out.EmailAddresses) != len(template.EmailAddresses) {
 941                         t.Errorf("%s: output email addresses and template email addresses don't match", test.name)
 942                 } else if len(out.IPAddresses) != len(template.IPAddresses) {
 943                         t.Errorf("%s: output IP addresses and template IP addresses names don't match", test.name)
 944                 }
 945         }
 946 }
 947
 948 func marshalAndParseCSR(t *testing.T, template *CertificateRequest) *CertificateRequest {
 949         block, _ := pem.Decode([]byte(pemPrivateKey))
 950         rsaPriv, err := ParsePKCS1PrivateKey(block.Bytes)
 951         if err != nil {
 952                 t.Fatal(err)
 953         }
 954
 955         derBytes, err := CreateCertificateRequest(rand.Reader, template, rsaPriv)
 956         if err != nil {
 957                 t.Fatal(err)
 958         }
 959
 960         csr, err := ParseCertificateRequest(derBytes)
 961         if err != nil {
 962                 t.Fatal(err)
 963         }
 964
 965         return csr
 966 }
 967
 968 func TestCertificateRequestOverrides(t *testing.T) {
 969         sanContents, err := marshalSANs([]string{"foo.example.com"}, nil, nil)
 970         if err != nil {
 971                 t.Fatal(err)
 972         }
 973
 974         template := CertificateRequest{
 975                 Subject: pkix.Name{
 976                         CommonName:   "test.example.com",
 977                         Organization: []string{"Σ Acme Co"},
 978                 },
 979                 DNSNames: []string{"test.example.com"},
 980
 981                 // An explicit extension should override the DNSNames from the
 982                 // template.
 983                 ExtraExtensions: []pkix.Extension{
 984                         {
 985                                 Id:    oidExtensionSubjectAltName,
 986                                 Value: sanContents,
 987                         },
 988                 },
 989         }
 990
 991         csr := marshalAndParseCSR(t, &template)
 992
 993         if len(csr.DNSNames) != 1 || csr.DNSNames[0] != "foo.example.com" {
 994                 t.Errorf("Extension did not override template. Got %v\n", csr.DNSNames)
 995         }
 996
 997         // If there is already an attribute with X.509 extensions then the
 998         // extra extensions should be added to it rather than creating a CSR
 999         // with two extension attributes.
1000
1001         template.Attributes = []pkix.AttributeTypeAndValueSET{
1002                 {
1003                         Type: oidExtensionRequest,
1004                         Value: [][]pkix.AttributeTypeAndValue{
1005                                 {
1006                                         {
1007                                                 Type:  oidExtensionAuthorityInfoAccess,
1008                                                 Value: []byte("foo"),
1009                                         },
1010                                 },
1011                         },
1012                 },
1013         }
1014
1015         csr = marshalAndParseCSR(t, &template)
1016         if l := len(csr.Attributes); l != 1 {
1017                 t.Errorf("incorrect number of attributes: %d\n", l)
1018         }
1019
1020         if !csr.Attributes[0].Type.Equal(oidExtensionRequest) ||
1021                 len(csr.Attributes[0].Value) != 1 ||
1022                 len(csr.Attributes[0].Value[0]) != 2 {
1023                 t.Errorf("bad attributes: %#v\n", csr.Attributes)
1024         }
1025
1026         sanContents2, err := marshalSANs([]string{"foo2.example.com"}, nil, nil)
1027         if err != nil {
1028                 t.Fatal(err)
1029         }
1030
1031         // Extensions in Attributes should override those in ExtraExtensions.
1032         template.Attributes[0].Value[0] = append(template.Attributes[0].Value[0], pkix.AttributeTypeAndValue{
1033                 Type:  oidExtensionSubjectAltName,
1034                 Value: sanContents2,
1035         })
1036
1037         csr = marshalAndParseCSR(t, &template)
1038
1039         if len(csr.DNSNames) != 1 || csr.DNSNames[0] != "foo2.example.com" {
1040                 t.Errorf("Attributes did not override ExtraExtensions. Got %v\n", csr.DNSNames)
1041         }
1042 }
1043
1044 func TestParseCertificateRequest(t *testing.T) {
1045         for _, csrBase64 := range csrBase64Array {
1046                 csrBytes := fromBase64(csrBase64)
1047                 csr, err := ParseCertificateRequest(csrBytes)
1048                 if err != nil {
1049                         t.Fatalf("failed to parse CSR: %s", err)
1050                 }
1051
1052                 if len(csr.EmailAddresses) != 1 || csr.EmailAddresses[0] != "gopher@golang.org" {
1053                         t.Errorf("incorrect email addresses found: %v", csr.EmailAddresses)
1054                 }
1055
1056                 if len(csr.DNSNames) != 1 || csr.DNSNames[0] != "test.example.com" {
1057                         t.Errorf("incorrect DNS names found: %v", csr.DNSNames)
1058                 }
1059
1060                 if len(csr.Subject.Country) != 1 || csr.Subject.Country[0] != "AU" {
1061                         t.Errorf("incorrect Subject name: %v", csr.Subject)
1062                 }
1063
1064                 found := false
1065                 for _, e := range csr.Extensions {
1066                         if e.Id.Equal(oidExtensionBasicConstraints) {
1067                                 found = true
1068                                 break
1069                         }
1070                 }
1071                 if !found {
1072                         t.Errorf("basic constraints extension not found in CSR")
1073                 }
1074         }
1075 }
1076
1077 func TestCriticalFlagInCSRRequestedExtensions(t *testing.T) {
1078         // This CSR contains an extension request where the extensions have a
1079         // critical flag in them. In the past we failed to handle this.
1080         const csrBase64 = "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"
1081
1082         csrBytes := fromBase64(csrBase64)
1083         csr, err := ParseCertificateRequest(csrBytes)
1084         if err != nil {
1085                 t.Fatalf("failed to parse CSR: %s", err)
1086         }
1087
1088         expected := []struct{
1089                 Id asn1.ObjectIdentifier
1090                 Value []byte
1091         }{
1092                 {oidExtensionBasicConstraints, fromBase64("MAYBAf8CAQA=")},
1093                 {oidExtensionKeyUsage, fromBase64("AwIChA==")},
1094         }
1095
1096         if n := len(csr.Extensions); n != len(expected) {
1097                 t.Fatalf("expected to find %d extensions but found %d", len(expected), n)
1098         }
1099
1100         for i, extension := range csr.Extensions {
1101                 if !extension.Id.Equal(expected[i].Id) {
1102                         t.Fatalf("extension #%d has unexpected type %v (expected %v)", i, extension.Id, expected[i].Id)
1103                 }
1104
1105                 if !bytes.Equal(extension.Value, expected[i].Value) {
1106                         t.Fatalf("extension #%d has unexpected contents %x (expected %x)", i, extension.Value, expected[i].Value)
1107                 }
1108         }
1109 }
1110
1111 func TestMaxPathLen(t *testing.T) {
1112         block, _ := pem.Decode([]byte(pemPrivateKey))
1113         rsaPriv, err := ParsePKCS1PrivateKey(block.Bytes)
1114         if err != nil {
1115                 t.Fatalf("Failed to parse private key: %s", err)
1116         }
1117
1118         template := &Certificate{
1119                 SerialNumber: big.NewInt(1),
1120                 Subject: pkix.Name{
1121                         CommonName: "Σ Acme Co",
1122                 },
1123                 NotBefore: time.Unix(1000, 0),
1124                 NotAfter:  time.Unix(100000, 0),
1125
1126                 BasicConstraintsValid: true,
1127                 IsCA: true,
1128         }
1129
1130         serialiseAndParse := func(template *Certificate) *Certificate {
1131                 derBytes, err := CreateCertificate(rand.Reader, template, template, &rsaPriv.PublicKey, rsaPriv)
1132                 if err != nil {
1133                         t.Fatalf("failed to create certificate: %s", err)
1134                         return nil
1135                 }
1136
1137                 cert, err := ParseCertificate(derBytes)
1138                 if err != nil {
1139                         t.Fatalf("failed to parse certificate: %s", err)
1140                         return nil
1141                 }
1142
1143                 return cert
1144         }
1145
1146         cert1 := serialiseAndParse(template)
1147         if m := cert1.MaxPathLen; m != -1 {
1148                 t.Errorf("Omitting MaxPathLen didn't turn into -1, got %d", m)
1149         }
1150         if cert1.MaxPathLenZero {
1151                 t.Errorf("Omitting MaxPathLen resulted in MaxPathLenZero")
1152         }
1153
1154         template.MaxPathLen = 1
1155         cert2 := serialiseAndParse(template)
1156         if m := cert2.MaxPathLen; m != 1 {
1157                 t.Errorf("Setting MaxPathLen didn't work. Got %d but set 1", m)
1158         }
1159         if cert2.MaxPathLenZero {
1160                 t.Errorf("Setting MaxPathLen resulted in MaxPathLenZero")
1161         }
1162
1163         template.MaxPathLen = 0
1164         template.MaxPathLenZero = true
1165         cert3 := serialiseAndParse(template)
1166         if m := cert3.MaxPathLen; m != 0 {
1167                 t.Errorf("Setting MaxPathLenZero didn't work, got %d", m)
1168         }
1169         if !cert3.MaxPathLenZero {
1170                 t.Errorf("Setting MaxPathLen to zero didn't result in MaxPathLenZero")
1171         }
1172 }
1173
1174 func TestASN1BitLength(t *testing.T) {
1175         tests := []struct {
1176                 bytes  []byte
1177                 bitLen int
1178         }{
1179                 {nil, 0},
1180                 {[]byte{0x00}, 0},
1181                 {[]byte{0x00, 0x00}, 0},
1182                 {[]byte{0xf0}, 4},
1183                 {[]byte{0x88}, 5},
1184                 {[]byte{0xff}, 8},
1185                 {[]byte{0xff, 0x80}, 9},
1186                 {[]byte{0xff, 0x81}, 16},
1187         }
1188
1189         for i, test := range tests {
1190                 if got := asn1BitLength(test.bytes); got != test.bitLen {
1191                         t.Errorf("#%d: calculated bit-length of %d for %x, wanted %d", i, got, test.bytes, test.bitLen)
1192                 }
1193         }
1194 }
1195
1196 func TestVerifyEmptyCertificate(t *testing.T) {
1197         if _, err := new(Certificate).Verify(VerifyOptions{}); err != errNotParsed {
1198                 t.Errorf("Verifying empty certificate resulted in unexpected error: %q (wanted %q)", err, errNotParsed)
1199         }
1200 }
1201
1202 // These CSR was generated with OpenSSL:
1203 //  openssl req -out CSR.csr -new -sha256 -nodes -keyout privateKey.key -config openssl.cnf
1204 //
1205 // With openssl.cnf containing the following sections:
1206 //   [ v3_req ]
1207 //   basicConstraints = CA:FALSE
1208 //   keyUsage = nonRepudiation, digitalSignature, keyEncipherment
1209 //   subjectAltName = email:gopher@golang.org,DNS:test.example.com
1210 //   [ req_attributes ]
1211 //   challengePassword = ignored challenge
1212 //   unstructuredName  = ignored unstructured name
1213 var csrBase64Array = [...]string{
1214         // Just [ v3_req ]
1215         "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",
1216         // Both [ v3_req ] and [ req_attributes ]
1217         "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",
1218 }