libgo/go/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         "fmt"
  22         "internal/testenv"
  23         "math/big"
  24         "net"
  25         "os/exec"
  26         "reflect"
  27         "runtime"
  28         "strings"
  29         "testing"
  30         "time"
  31 )
  32
  33 func TestParsePKCS1PrivateKey(t *testing.T) {
  34         block, _ := pem.Decode([]byte(pemPrivateKey))
  35         priv, err := ParsePKCS1PrivateKey(block.Bytes)
  36         if err != nil {
  37                 t.Errorf("Failed to parse private key: %s", err)
  38                 return
  39         }
  40         if priv.PublicKey.N.Cmp(rsaPrivateKey.PublicKey.N) != 0 ||
  41                 priv.PublicKey.E != rsaPrivateKey.PublicKey.E ||
  42                 priv.D.Cmp(rsaPrivateKey.D) != 0 ||
  43                 priv.Primes[0].Cmp(rsaPrivateKey.Primes[0]) != 0 ||
  44                 priv.Primes[1].Cmp(rsaPrivateKey.Primes[1]) != 0 {
  45                 t.Errorf("got:%+v want:%+v", priv, rsaPrivateKey)
  46         }
  47
  48         // This private key includes an invalid prime that
  49         // rsa.PrivateKey.Validate should reject.
  50         data := []byte("0\x16\x02\x00\x02\x02\u007f\x00\x02\x0200\x02\x0200\x02\x02\x00\x01\x02\x02\u007f\x00")
  51         if _, err := ParsePKCS1PrivateKey(data); err == nil {
  52                 t.Errorf("parsing invalid private key did not result in an error")
  53         }
  54 }
  55
  56 func TestParsePKIXPublicKey(t *testing.T) {
  57         block, _ := pem.Decode([]byte(pemPublicKey))
  58         pub, err := ParsePKIXPublicKey(block.Bytes)
  59         if err != nil {
  60                 t.Errorf("Failed to parse RSA public key: %s", err)
  61                 return
  62         }
  63         rsaPub, ok := pub.(*rsa.PublicKey)
  64         if !ok {
  65                 t.Errorf("Value returned from ParsePKIXPublicKey was not an RSA public key")
  66                 return
  67         }
  68
  69         pubBytes2, err := MarshalPKIXPublicKey(rsaPub)
  70         if err != nil {
  71                 t.Errorf("Failed to marshal RSA public key for the second time: %s", err)
  72                 return
  73         }
  74         if !bytes.Equal(pubBytes2, block.Bytes) {
  75                 t.Errorf("Reserialization of public key didn't match. got %x, want %x", pubBytes2, block.Bytes)
  76         }
  77 }
  78
  79 var pemPublicKey = `-----BEGIN PUBLIC KEY-----
  80 MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA3VoPN9PKUjKFLMwOge6+
  81 wnDi8sbETGIx2FKXGgqtAKpzmem53kRGEQg8WeqRmp12wgp74TGpkEXsGae7RS1k
  82 enJCnma4fii+noGH7R0qKgHvPrI2Bwa9hzsH8tHxpyM3qrXslOmD45EH9SxIDUBJ
  83 FehNdaPbLP1gFyahKMsdfxFJLUvbUycuZSJ2ZnIgeVxwm4qbSvZInL9Iu4FzuPtg
  84 fINKcbbovy1qq4KvPIrXzhbY3PWDc6btxCf3SE0JdE1MCPThntB62/bLMSQ7xdDR
  85 FF53oIpvxe/SCOymfWq/LW849Ytv3Xwod0+wzAP8STXG4HSELS4UedPYeHJJJYcZ
  86 +QIDAQAB
  87 -----END PUBLIC KEY-----
  88 `
  89
  90 var pemPrivateKey = `
  91 -----BEGIN RSA PRIVATE KEY-----
  92 MIICXAIBAAKBgQCxoeCUW5KJxNPxMp+KmCxKLc1Zv9Ny+4CFqcUXVUYH69L3mQ7v
  93 IWrJ9GBfcaA7BPQqUlWxWM+OCEQZH1EZNIuqRMNQVuIGCbz5UQ8w6tS0gcgdeGX7
  94 J7jgCQ4RK3F/PuCM38QBLaHx988qG8NMc6VKErBjctCXFHQt14lerd5KpQIDAQAB
  95 AoGAYrf6Hbk+mT5AI33k2Jt1kcweodBP7UkExkPxeuQzRVe0KVJw0EkcFhywKpr1
  96 V5eLMrILWcJnpyHE5slWwtFHBG6a5fLaNtsBBtcAIfqTQ0Vfj5c6SzVaJv0Z5rOd
  97 7gQF6isy3t3w9IF3We9wXQKzT6q5ypPGdm6fciKQ8RnzREkCQQDZwppKATqQ41/R
  98 vhSj90fFifrGE6aVKC1hgSpxGQa4oIdsYYHwMzyhBmWW9Xv/R+fPyr8ZwPxp2c12
  99 33QwOLPLAkEA0NNUb+z4ebVVHyvSwF5jhfJxigim+s49KuzJ1+A2RaSApGyBZiwS
 100 rWvWkB471POAKUYt5ykIWVZ83zcceQiNTwJBAMJUFQZX5GDqWFc/zwGoKkeR49Yi
 101 MTXIvf7Wmv6E++eFcnT461FlGAUHRV+bQQXGsItR/opIG7mGogIkVXa3E1MCQARX
 102 AAA7eoZ9AEHflUeuLn9QJI/r0hyQQLEtrpwv6rDT1GCWaLII5HJ6NUFVf4TTcqxo
 103 6vdM4QGKTJoO+SaCyP0CQFdpcxSAuzpFcKv0IlJ8XzS/cy+mweCMwyJ1PFEc4FX6
 104 wg/HcAJWY60xZTJDFN+Qfx8ZQvBEin6c2/h+zZi5IVY=
 105 -----END RSA PRIVATE KEY-----
 106 `
 107
 108 var testPrivateKey *rsa.PrivateKey
 109
 110 func init() {
 111         block, _ := pem.Decode([]byte(pemPrivateKey))
 112
 113         var err error
 114         if testPrivateKey, err = ParsePKCS1PrivateKey(block.Bytes); err != nil {
 115                 panic("Failed to parse private key: " + err.Error())
 116         }
 117 }
 118
 119 func bigFromString(s string) *big.Int {
 120         ret := new(big.Int)
 121         ret.SetString(s, 10)
 122         return ret
 123 }
 124
 125 func fromBase10(base10 string) *big.Int {
 126         i := new(big.Int)
 127         i.SetString(base10, 10)
 128         return i
 129 }
 130
 131 func bigFromHexString(s string) *big.Int {
 132         ret := new(big.Int)
 133         ret.SetString(s, 16)
 134         return ret
 135 }
 136
 137 var rsaPrivateKey = &rsa.PrivateKey{
 138         PublicKey: rsa.PublicKey{
 139                 N: bigFromString("124737666279038955318614287965056875799409043964547386061640914307192830334599556034328900586693254156136128122194531292927142396093148164407300419162827624945636708870992355233833321488652786796134504707628792159725681555822420087112284637501705261187690946267527866880072856272532711620639179596808018872997"),
 140                 E: 65537,
 141         },
 142         D: bigFromString("69322600686866301945688231018559005300304807960033948687567105312977055197015197977971637657636780793670599180105424702854759606794705928621125408040473426339714144598640466128488132656829419518221592374964225347786430566310906679585739468938549035854760501049443920822523780156843263434219450229353270690889"),
 143         Primes: []*big.Int{
 144                 bigFromString("11405025354575369741595561190164746858706645478381139288033759331174478411254205003127028642766986913445391069745480057674348716675323735886284176682955723"),
 145                 bigFromString("10937079261204603443118731009201819560867324167189758120988909645641782263430128449826989846631183550578761324239709121189827307416350485191350050332642639"),
 146         },
 147 }
 148
 149 func TestMarshalRSAPrivateKey(t *testing.T) {
 150         priv := &rsa.PrivateKey{
 151                 PublicKey: rsa.PublicKey{
 152                         N: fromBase10("16346378922382193400538269749936049106320265317511766357599732575277382844051791096569333808598921852351577762718529818072849191122419410612033592401403764925096136759934497687765453905884149505175426053037420486697072448609022753683683718057795566811401938833367954642951433473337066311978821180526439641496973296037000052546108507805269279414789035461158073156772151892452251106173507240488993608650881929629163465099476849643165682709047462010581308719577053905787496296934240246311806555924593059995202856826239801816771116902778517096212527979497399966526283516447337775509777558018145573127308919204297111496233"),
 153                         E: 3,
 154                 },
 155                 D: fromBase10("10897585948254795600358846499957366070880176878341177571733155050184921896034527397712889205732614568234385175145686545381899460748279607074689061600935843283397424506622998458510302603922766336783617368686090042765718290914099334449154829375179958369993407724946186243249568928237086215759259909861748642124071874879861299389874230489928271621259294894142840428407196932444474088857746123104978617098858619445675532587787023228852383149557470077802718705420275739737958953794088728369933811184572620857678792001136676902250566845618813972833750098806496641114644760255910789397593428910198080271317419213080834885003"),
 156                 Primes: []*big.Int{
 157                         fromBase10("1025363189502892836833747188838978207017355117492483312747347695538428729137306368764177201532277413433182799108299960196606011786562992097313508180436744488171474690412562218914213688661311117337381958560443"),
 158                         fromBase10("3467903426626310123395340254094941045497208049900750380025518552334536945536837294961497712862519984786362199788654739924501424784631315081391467293694361474867825728031147665777546570788493758372218019373"),
 159                         fromBase10("4597024781409332673052708605078359346966325141767460991205742124888960305710298765592730135879076084498363772408626791576005136245060321874472727132746643162385746062759369754202494417496879741537284589047"),
 160                 },
 161         }
 162
 163         derBytes := MarshalPKCS1PrivateKey(priv)
 164
 165         priv2, err := ParsePKCS1PrivateKey(derBytes)
 166         if err != nil {
 167                 t.Errorf("error parsing serialized key: %s", err)
 168                 return
 169         }
 170         if priv.PublicKey.N.Cmp(priv2.PublicKey.N) != 0 ||
 171                 priv.PublicKey.E != priv2.PublicKey.E ||
 172                 priv.D.Cmp(priv2.D) != 0 ||
 173                 len(priv2.Primes) != 3 ||
 174                 priv.Primes[0].Cmp(priv2.Primes[0]) != 0 ||
 175                 priv.Primes[1].Cmp(priv2.Primes[1]) != 0 ||
 176                 priv.Primes[2].Cmp(priv2.Primes[2]) != 0 {
 177                 t.Errorf("got:%+v want:%+v", priv, priv2)
 178         }
 179 }
 180
 181 type matchHostnamesTest struct {
 182         pattern, host string
 183         ok            bool
 184 }
 185
 186 var matchHostnamesTests = []matchHostnamesTest{
 187         {"a.b.c", "a.b.c", true},
 188         {"a.b.c", "b.b.c", false},
 189         {"", "b.b.c", false},
 190         {"a.b.c", "", false},
 191         {"example.com", "example.com", true},
 192         {"example.com", "www.example.com", false},
 193         {"*.example.com", "example.com", false},
 194         {"*.example.com", "www.example.com", true},
 195         {"*.example.com", "www.example.com.", true},
 196         {"*.example.com", "xyz.www.example.com", false},
 197         {"*.*.example.com", "xyz.www.example.com", false},
 198         {"*.www.*.com", "xyz.www.example.com", false},
 199         {"*bar.example.com", "foobar.example.com", false},
 200         {"f*.example.com", "foobar.example.com", false},
 201         {"", ".", false},
 202         {".", "", false},
 203         {".", ".", false},
 204         {"example.com", "example.com.", true},
 205         {"example.com.", "example.com", true},
 206         {"example.com.", "example.com.", true},
 207         {"*.com.", "example.com.", true},
 208         {"*.com.", "example.com", true},
 209         {"*.com", "example.com", true},
 210         {"*.com", "example.com.", true},
 211 }
 212
 213 func TestMatchHostnames(t *testing.T) {
 214         for i, test := range matchHostnamesTests {
 215                 r := matchHostnames(test.pattern, test.host)
 216                 if r != test.ok {
 217                         t.Errorf("#%d mismatch got: %t want: %t when matching '%s' against '%s'", i, r, test.ok, test.host, test.pattern)
 218                 }
 219         }
 220 }
 221
 222 func TestMatchIP(t *testing.T) {
 223         // Check that pattern matching is working.
 224         c := &Certificate{
 225                 DNSNames: []string{"*.foo.bar.baz"},
 226                 Subject: pkix.Name{
 227                         CommonName: "*.foo.bar.baz",
 228                 },
 229         }
 230         err := c.VerifyHostname("quux.foo.bar.baz")
 231         if err != nil {
 232                 t.Fatalf("VerifyHostname(quux.foo.bar.baz): %v", err)
 233         }
 234
 235         // But check that if we change it to be matching against an IP address,
 236         // it is rejected.
 237         c = &Certificate{
 238                 DNSNames: []string{"*.2.3.4"},
 239                 Subject: pkix.Name{
 240                         CommonName: "*.2.3.4",
 241                 },
 242         }
 243         err = c.VerifyHostname("1.2.3.4")
 244         if err == nil {
 245                 t.Fatalf("VerifyHostname(1.2.3.4) should have failed, did not")
 246         }
 247
 248         c = &Certificate{
 249                 IPAddresses: []net.IP{net.ParseIP("127.0.0.1"), net.ParseIP("::1")},
 250         }
 251         err = c.VerifyHostname("127.0.0.1")
 252         if err != nil {
 253                 t.Fatalf("VerifyHostname(127.0.0.1): %v", err)
 254         }
 255         err = c.VerifyHostname("::1")
 256         if err != nil {
 257                 t.Fatalf("VerifyHostname(::1): %v", err)
 258         }
 259         err = c.VerifyHostname("[::1]")
 260         if err != nil {
 261                 t.Fatalf("VerifyHostname([::1]): %v", err)
 262         }
 263 }
 264
 265 func TestCertificateParse(t *testing.T) {
 266         s, _ := hex.DecodeString(certBytes)
 267         certs, err := ParseCertificates(s)
 268         if err != nil {
 269                 t.Error(err)
 270         }
 271         if len(certs) != 2 {
 272                 t.Errorf("Wrong number of certs: got %d want 2", len(certs))
 273                 return
 274         }
 275
 276         err = certs[0].CheckSignatureFrom(certs[1])
 277         if err != nil {
 278                 t.Error(err)
 279         }
 280
 281         if err := certs[0].VerifyHostname("mail.google.com"); err != nil {
 282                 t.Error(err)
 283         }
 284
 285         const expectedExtensions = 4
 286         if n := len(certs[0].Extensions); n != expectedExtensions {
 287                 t.Errorf("want %d extensions, got %d", expectedExtensions, n)
 288         }
 289 }
 290
 291 var certBytes = "308203223082028ba00302010202106edf0d9499fd4533dd1297fc42a93be1300d06092a864886" +
 292         "f70d0101050500304c310b3009060355040613025a4131253023060355040a131c546861777465" +
 293         "20436f6e73756c74696e67202850747929204c74642e311630140603550403130d546861777465" +
 294         "20534743204341301e170d3039303332353136343932395a170d3130303332353136343932395a" +
 295         "3069310b3009060355040613025553311330110603550408130a43616c69666f726e6961311630" +
 296         "140603550407130d4d6f756e7461696e205669657731133011060355040a130a476f6f676c6520" +
 297         "496e63311830160603550403130f6d61696c2e676f6f676c652e636f6d30819f300d06092a8648" +
 298         "86f70d010101050003818d0030818902818100c5d6f892fccaf5614b064149e80a2c9581a218ef" +
 299         "41ec35bd7a58125ae76f9ea54ddc893abbeb029f6b73616bf0ffd868791fba7af9c4aebf3706ba" +
 300         "3eeaeed27435b4ddcfb157c05f351d66aa87fee0de072d66d773affbd36ab78bef090e0cc861a9" +
 301         "03ac90dd98b51c9c41566c017f0beec3bff391051ffba0f5cc6850ad2a590203010001a381e730" +
 302         "81e430280603551d250421301f06082b0601050507030106082b06010505070302060960864801" +
 303         "86f842040130360603551d1f042f302d302ba029a0278625687474703a2f2f63726c2e74686177" +
 304         "74652e636f6d2f54686177746553474343412e63726c307206082b060105050701010466306430" +
 305         "2206082b060105050730018616687474703a2f2f6f6373702e7468617774652e636f6d303e0608" +
 306         "2b060105050730028632687474703a2f2f7777772e7468617774652e636f6d2f7265706f736974" +
 307         "6f72792f5468617774655f5347435f43412e637274300c0603551d130101ff04023000300d0609" +
 308         "2a864886f70d01010505000381810062f1f3050ebc105e497c7aedf87e24d2f4a986bb3b837bd1" +
 309         "9b91ebcad98b065992f6bd2b49b7d6d3cb2e427a99d606c7b1d46352527fac39e6a8b6726de5bf" +
 310         "70212a52cba07634a5e332011bd1868e78eb5e3c93cf03072276786f207494feaa0ed9d53b2110" +
 311         "a76571f90209cdae884385c882587030ee15f33d761e2e45a6bc308203233082028ca003020102" +
 312         "020430000002300d06092a864886f70d0101050500305f310b3009060355040613025553311730" +
 313         "15060355040a130e566572695369676e2c20496e632e31373035060355040b132e436c61737320" +
 314         "33205075626c6963205072696d6172792043657274696669636174696f6e20417574686f726974" +
 315         "79301e170d3034303531333030303030305a170d3134303531323233353935395a304c310b3009" +
 316         "060355040613025a4131253023060355040a131c54686177746520436f6e73756c74696e672028" +
 317         "50747929204c74642e311630140603550403130d5468617774652053474320434130819f300d06" +
 318         "092a864886f70d010101050003818d0030818902818100d4d367d08d157faecd31fe7d1d91a13f" +
 319         "0b713cacccc864fb63fc324b0794bd6f80ba2fe10493c033fc093323e90b742b71c403c6d2cde2" +
 320         "2ff50963cdff48a500bfe0e7f388b72d32de9836e60aad007bc4644a3b847503f270927d0e62f5" +
 321         "21ab693684317590f8bfc76c881b06957cc9e5a8de75a12c7a68dfd5ca1c875860190203010001" +
 322         "a381fe3081fb30120603551d130101ff040830060101ff020100300b0603551d0f040403020106" +
 323         "301106096086480186f842010104040302010630280603551d110421301fa41d301b3119301706" +
 324         "035504031310507269766174654c6162656c332d313530310603551d1f042a30283026a024a022" +
 325         "8620687474703a2f2f63726c2e766572697369676e2e636f6d2f706361332e63726c303206082b" +
 326         "0601050507010104263024302206082b060105050730018616687474703a2f2f6f6373702e7468" +
 327         "617774652e636f6d30340603551d25042d302b06082b0601050507030106082b06010505070302" +
 328         "06096086480186f8420401060a6086480186f845010801300d06092a864886f70d010105050003" +
 329         "81810055ac63eadea1ddd2905f9f0bce76be13518f93d9052bc81b774bad6950a1eededcfddb07" +
 330         "e9e83994dcab72792f06bfab8170c4a8edea5334edef1e53d906c7562bd15cf4d18a8eb42bb137" +
 331         "9048084225c53e8acb7feb6f04d16dc574a2f7a27c7b603c77cd0ece48027f012fb69b37e02a2a" +
 332         "36dcd585d6ace53f546f961e05af"
 333
 334 func TestCreateSelfSignedCertificate(t *testing.T) {
 335         random := rand.Reader
 336
 337         ecdsaPriv, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
 338         if err != nil {
 339                 t.Fatalf("Failed to generate ECDSA key: %s", err)
 340         }
 341
 342         tests := []struct {
 343                 name      string
 344                 pub, priv interface{}
 345                 checkSig  bool
 346                 sigAlgo   SignatureAlgorithm
 347         }{
 348                 {"RSA/RSA", &testPrivateKey.PublicKey, testPrivateKey, true, SHA1WithRSA},
 349                 {"RSA/ECDSA", &testPrivateKey.PublicKey, ecdsaPriv, false, ECDSAWithSHA384},
 350                 {"ECDSA/RSA", &ecdsaPriv.PublicKey, testPrivateKey, false, SHA256WithRSA},
 351                 {"ECDSA/ECDSA", &ecdsaPriv.PublicKey, ecdsaPriv, true, ECDSAWithSHA1},
 352                 {"RSAPSS/RSAPSS", &testPrivateKey.PublicKey, testPrivateKey, true, SHA256WithRSAPSS},
 353                 {"ECDSA/RSAPSS", &ecdsaPriv.PublicKey, testPrivateKey, false, SHA256WithRSAPSS},
 354                 {"RSAPSS/ECDSA", &testPrivateKey.PublicKey, ecdsaPriv, false, ECDSAWithSHA384},
 355         }
 356
 357         testExtKeyUsage := []ExtKeyUsage{ExtKeyUsageClientAuth, ExtKeyUsageServerAuth}
 358         testUnknownExtKeyUsage := []asn1.ObjectIdentifier{[]int{1, 2, 3}, []int{2, 59, 1}}
 359         extraExtensionData := []byte("extra extension")
 360
 361         for _, test := range tests {
 362                 commonName := "test.example.com"
 363                 template := Certificate{
 364                         // SerialNumber is negative to ensure that negative
 365                         // values are parsed. This is due to the prevalence of
 366                         // buggy code that produces certificates with negative
 367                         // serial numbers.
 368                         SerialNumber: big.NewInt(-1),
 369                         Subject: pkix.Name{
 370                                 CommonName:   commonName,
 371                                 Organization: []string{"Σ Acme Co"},
 372                                 Country:      []string{"US"},
 373                                 ExtraNames: []pkix.AttributeTypeAndValue{
 374                                         {
 375                                                 Type:  []int{2, 5, 4, 42},
 376                                                 Value: "Gopher",
 377                                         },
 378                                         // This should override the Country, above.
 379                                         {
 380                                                 Type:  []int{2, 5, 4, 6},
 381                                                 Value: "NL",
 382                                         },
 383                                 },
 384                         },
 385                         NotBefore: time.Unix(1000, 0),
 386                         NotAfter:  time.Unix(100000, 0),
 387
 388                         SignatureAlgorithm: test.sigAlgo,
 389
 390                         SubjectKeyId: []byte{1, 2, 3, 4},
 391                         KeyUsage:     KeyUsageCertSign,
 392
 393                         ExtKeyUsage:        testExtKeyUsage,
 394                         UnknownExtKeyUsage: testUnknownExtKeyUsage,
 395
 396                         BasicConstraintsValid: true,
 397                         IsCA: true,
 398
 399                         OCSPServer:            []string{"http://ocsp.example.com"},
 400                         IssuingCertificateURL: []string{"http://crt.example.com/ca1.crt"},
 401
 402                         DNSNames:       []string{"test.example.com"},
 403                         EmailAddresses: []string{"gopher@golang.org"},
 404                         IPAddresses:    []net.IP{net.IPv4(127, 0, 0, 1).To4(), net.ParseIP("2001:4860:0:2001::68")},
 405
 406                         PolicyIdentifiers:   []asn1.ObjectIdentifier{[]int{1, 2, 3}},
 407                         PermittedDNSDomains: []string{".example.com", "example.com"},
 408                         ExcludedDNSDomains:  []string{"bar.example.com"},
 409
 410                         CRLDistributionPoints: []string{"http://crl1.example.com/ca1.crl", "http://crl2.example.com/ca1.crl"},
 411
 412                         ExtraExtensions: []pkix.Extension{
 413                                 {
 414                                         Id:    []int{1, 2, 3, 4},
 415                                         Value: extraExtensionData,
 416                                 },
 417                                 // This extension should override the SubjectKeyId, above.
 418                                 {
 419                                         Id:       oidExtensionSubjectKeyId,
 420                                         Critical: false,
 421                                         Value:    []byte{0x04, 0x04, 4, 3, 2, 1},
 422                                 },
 423                         },
 424                 }
 425
 426                 derBytes, err := CreateCertificate(random, &template, &template, test.pub, test.priv)
 427                 if err != nil {
 428                         t.Errorf("%s: failed to create certificate: %s", test.name, err)
 429                         continue
 430                 }
 431
 432                 cert, err := ParseCertificate(derBytes)
 433                 if err != nil {
 434                         t.Errorf("%s: failed to parse certificate: %s", test.name, err)
 435                         continue
 436                 }
 437
 438                 if len(cert.PolicyIdentifiers) != 1 || !cert.PolicyIdentifiers[0].Equal(template.PolicyIdentifiers[0]) {
 439                         t.Errorf("%s: failed to parse policy identifiers: got:%#v want:%#v", test.name, cert.PolicyIdentifiers, template.PolicyIdentifiers)
 440                 }
 441
 442                 if len(cert.PermittedDNSDomains) != 2 || cert.PermittedDNSDomains[0] != ".example.com" || cert.PermittedDNSDomains[1] != "example.com" {
 443                         t.Errorf("%s: failed to parse name constraints: %#v", test.name, cert.PermittedDNSDomains)
 444                 }
 445
 446                 if len(cert.ExcludedDNSDomains) != 1 || cert.ExcludedDNSDomains[0] != "bar.example.com" {
 447                         t.Errorf("%s: failed to parse name constraint exclusions: %#v", test.name, cert.ExcludedDNSDomains)
 448                 }
 449
 450                 if cert.Subject.CommonName != commonName {
 451                         t.Errorf("%s: subject wasn't correctly copied from the template. Got %s, want %s", test.name, cert.Subject.CommonName, commonName)
 452                 }
 453
 454                 if len(cert.Subject.Country) != 1 || cert.Subject.Country[0] != "NL" {
 455                         t.Errorf("%s: ExtraNames didn't override Country", test.name)
 456                 }
 457
 458                 found := false
 459                 for _, atv := range cert.Subject.Names {
 460                         if atv.Type.Equal([]int{2, 5, 4, 42}) {
 461                                 found = true
 462                                 break
 463                         }
 464                 }
 465                 if !found {
 466                         t.Errorf("%s: Names didn't contain oid 2.5.4.42 from ExtraNames", test.name)
 467                 }
 468
 469                 if cert.Issuer.CommonName != commonName {
 470                         t.Errorf("%s: issuer wasn't correctly copied from the template. Got %s, want %s", test.name, cert.Issuer.CommonName, commonName)
 471                 }
 472
 473                 if cert.SignatureAlgorithm != test.sigAlgo {
 474                         t.Errorf("%s: SignatureAlgorithm wasn't copied from template. Got %v, want %v", test.name, cert.SignatureAlgorithm, test.sigAlgo)
 475                 }
 476
 477                 if !reflect.DeepEqual(cert.ExtKeyUsage, testExtKeyUsage) {
 478                         t.Errorf("%s: extkeyusage wasn't correctly copied from the template. Got %v, want %v", test.name, cert.ExtKeyUsage, testExtKeyUsage)
 479                 }
 480
 481                 if !reflect.DeepEqual(cert.UnknownExtKeyUsage, testUnknownExtKeyUsage) {
 482                         t.Errorf("%s: unknown extkeyusage wasn't correctly copied from the template. Got %v, want %v", test.name, cert.UnknownExtKeyUsage, testUnknownExtKeyUsage)
 483                 }
 484
 485                 if !reflect.DeepEqual(cert.OCSPServer, template.OCSPServer) {
 486                         t.Errorf("%s: OCSP servers differ from template. Got %v, want %v", test.name, cert.OCSPServer, template.OCSPServer)
 487                 }
 488
 489                 if !reflect.DeepEqual(cert.IssuingCertificateURL, template.IssuingCertificateURL) {
 490                         t.Errorf("%s: Issuing certificate URLs differ from template. Got %v, want %v", test.name, cert.IssuingCertificateURL, template.IssuingCertificateURL)
 491                 }
 492
 493                 if !reflect.DeepEqual(cert.DNSNames, template.DNSNames) {
 494                         t.Errorf("%s: SAN DNS names differ from template. Got %v, want %v", test.name, cert.DNSNames, template.DNSNames)
 495                 }
 496
 497                 if !reflect.DeepEqual(cert.EmailAddresses, template.EmailAddresses) {
 498                         t.Errorf("%s: SAN emails differ from template. Got %v, want %v", test.name, cert.EmailAddresses, template.EmailAddresses)
 499                 }
 500
 501                 if !reflect.DeepEqual(cert.IPAddresses, template.IPAddresses) {
 502                         t.Errorf("%s: SAN IPs differ from template. Got %v, want %v", test.name, cert.IPAddresses, template.IPAddresses)
 503                 }
 504
 505                 if !reflect.DeepEqual(cert.CRLDistributionPoints, template.CRLDistributionPoints) {
 506                         t.Errorf("%s: CRL distribution points differ from template. Got %v, want %v", test.name, cert.CRLDistributionPoints, template.CRLDistributionPoints)
 507                 }
 508
 509                 if !bytes.Equal(cert.SubjectKeyId, []byte{4, 3, 2, 1}) {
 510                         t.Errorf("%s: ExtraExtensions didn't override SubjectKeyId", test.name)
 511                 }
 512
 513                 if !bytes.Contains(derBytes, extraExtensionData) {
 514                         t.Errorf("%s: didn't find extra extension in DER output", test.name)
 515                 }
 516
 517                 if test.checkSig {
 518                         err = cert.CheckSignatureFrom(cert)
 519                         if err != nil {
 520                                 t.Errorf("%s: signature verification failed: %s", test.name, err)
 521                         }
 522                 }
 523         }
 524 }
 525
 526 func TestUnknownCriticalExtension(t *testing.T) {
 527         priv, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
 528         if err != nil {
 529                 t.Fatalf("Failed to generate ECDSA key: %s", err)
 530         }
 531
 532         oids := []asn1.ObjectIdentifier{
 533                 // This OID is in the PKIX arc, but unknown.
 534                 {2, 5, 29, 999999},
 535                 // This is a nonsense, unassigned OID.
 536                 {1, 2, 3, 4},
 537         }
 538
 539         for _, oid := range oids {
 540                 template := Certificate{
 541                         SerialNumber: big.NewInt(1),
 542                         Subject: pkix.Name{
 543                                 CommonName: "foo",
 544                         },
 545                         NotBefore: time.Unix(1000, 0),
 546                         NotAfter:  time.Now().AddDate(1, 0, 0),
 547
 548                         BasicConstraintsValid: true,
 549                         IsCA: true,
 550
 551                         KeyUsage:    KeyUsageCertSign,
 552                         ExtKeyUsage: []ExtKeyUsage{ExtKeyUsageServerAuth},
 553
 554                         ExtraExtensions: []pkix.Extension{
 555                                 {
 556                                         Id:       oid,
 557                                         Critical: true,
 558                                         Value:    nil,
 559                                 },
 560                         },
 561                 }
 562
 563                 derBytes, err := CreateCertificate(rand.Reader, &template, &template, &priv.PublicKey, priv)
 564                 if err != nil {
 565                         t.Fatalf("failed to create certificate: %s", err)
 566                 }
 567
 568                 cert, err := ParseCertificate(derBytes)
 569                 if err != nil {
 570                         t.Fatalf("Certificate with unknown critical extension was not parsed: %s", err)
 571                 }
 572
 573                 roots := NewCertPool()
 574                 roots.AddCert(cert)
 575
 576                 // Setting Roots ensures that Verify won't delegate to the OS
 577                 // library and thus the correct error should always be
 578                 // returned.
 579                 _, err = cert.Verify(VerifyOptions{Roots: roots})
 580                 if err == nil {
 581                         t.Fatal("Certificate with unknown critical extension was verified without error")
 582                 }
 583                 if _, ok := err.(UnhandledCriticalExtension); !ok {
 584                         t.Fatalf("Error was %#v, but wanted one of type UnhandledCriticalExtension", err)
 585                 }
 586
 587                 cert.UnhandledCriticalExtensions = nil
 588                 if _, err = cert.Verify(VerifyOptions{Roots: roots}); err != nil {
 589                         t.Errorf("Certificate failed to verify after unhandled critical extensions were cleared: %s", err)
 590                 }
 591         }
 592 }
 593
 594 // Self-signed certificate using ECDSA with SHA1 & secp256r1
 595 var ecdsaSHA1CertPem = `
 596 -----BEGIN CERTIFICATE-----
 597 MIICDjCCAbUCCQDF6SfN0nsnrjAJBgcqhkjOPQQBMIGPMQswCQYDVQQGEwJVUzET
 598 MBEGA1UECAwKQ2FsaWZvcm5pYTEWMBQGA1UEBwwNTW91bnRhaW4gVmlldzEVMBMG
 599 A1UECgwMR29vZ2xlLCBJbmMuMRcwFQYDVQQDDA53d3cuZ29vZ2xlLmNvbTEjMCEG
 600 CSqGSIb3DQEJARYUZ29sYW5nLWRldkBnbWFpbC5jb20wHhcNMTIwNTIwMjAyMDUw
 601 WhcNMjIwNTE4MjAyMDUwWjCBjzELMAkGA1UEBhMCVVMxEzARBgNVBAgMCkNhbGlm
 602 b3JuaWExFjAUBgNVBAcMDU1vdW50YWluIFZpZXcxFTATBgNVBAoMDEdvb2dsZSwg
 603 SW5jLjEXMBUGA1UEAwwOd3d3Lmdvb2dsZS5jb20xIzAhBgkqhkiG9w0BCQEWFGdv
 604 bGFuZy1kZXZAZ21haWwuY29tMFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAE/Wgn
 605 WQDo5+bz71T0327ERgd5SDDXFbXLpzIZDXTkjpe8QTEbsF+ezsQfrekrpDPC4Cd3
 606 P9LY0tG+aI8IyVKdUjAJBgcqhkjOPQQBA0gAMEUCIGlsqMcRqWVIWTD6wXwe6Jk2
 607 DKxL46r/FLgJYnzBEH99AiEA3fBouObsvV1R3oVkb4BQYnD4/4LeId6lAT43YvyV
 608 a/A=
 609 -----END CERTIFICATE-----
 610 `
 611
 612 // Self-signed certificate using ECDSA with SHA256 & secp256r1
 613 var ecdsaSHA256p256CertPem = `
 614 -----BEGIN CERTIFICATE-----
 615 MIICDzCCAbYCCQDlsuMWvgQzhTAKBggqhkjOPQQDAjCBjzELMAkGA1UEBhMCVVMx
 616 EzARBgNVBAgMCkNhbGlmb3JuaWExFjAUBgNVBAcMDU1vdW50YWluIFZpZXcxFTAT
 617 BgNVBAoMDEdvb2dsZSwgSW5jLjEXMBUGA1UEAwwOd3d3Lmdvb2dsZS5jb20xIzAh
 618 BgkqhkiG9w0BCQEWFGdvbGFuZy1kZXZAZ21haWwuY29tMB4XDTEyMDUyMTAwMTkx
 619 NloXDTIyMDUxOTAwMTkxNlowgY8xCzAJBgNVBAYTAlVTMRMwEQYDVQQIDApDYWxp
 620 Zm9ybmlhMRYwFAYDVQQHDA1Nb3VudGFpbiBWaWV3MRUwEwYDVQQKDAxHb29nbGUs
 621 IEluYy4xFzAVBgNVBAMMDnd3dy5nb29nbGUuY29tMSMwIQYJKoZIhvcNAQkBFhRn
 622 b2xhbmctZGV2QGdtYWlsLmNvbTBZMBMGByqGSM49AgEGCCqGSM49AwEHA0IABPMt
 623 2ErhxAty5EJRu9yM+MTy+hUXm3pdW1ensAv382KoGExSXAFWP7pjJnNtHO+XSwVm
 624 YNtqjcAGFKpweoN//kQwCgYIKoZIzj0EAwIDRwAwRAIgIYSaUA/IB81gjbIw/hUV
 625 70twxJr5EcgOo0hLp3Jm+EYCIFDO3NNcgmURbJ1kfoS3N/0O+irUtoPw38YoNkqJ
 626 h5wi
 627 -----END CERTIFICATE-----
 628 `
 629
 630 // Self-signed certificate using ECDSA with SHA256 & secp384r1
 631 var ecdsaSHA256p384CertPem = `
 632 -----BEGIN CERTIFICATE-----
 633 MIICSjCCAdECCQDje/no7mXkVzAKBggqhkjOPQQDAjCBjjELMAkGA1UEBhMCVVMx
 634 EzARBgNVBAgMCkNhbGlmb3JuaWExFjAUBgNVBAcMDU1vdW50YWluIFZpZXcxFDAS
 635 BgNVBAoMC0dvb2dsZSwgSW5jMRcwFQYDVQQDDA53d3cuZ29vZ2xlLmNvbTEjMCEG
 636 CSqGSIb3DQEJARYUZ29sYW5nLWRldkBnbWFpbC5jb20wHhcNMTIwNTIxMDYxMDM0
 637 WhcNMjIwNTE5MDYxMDM0WjCBjjELMAkGA1UEBhMCVVMxEzARBgNVBAgMCkNhbGlm
 638 b3JuaWExFjAUBgNVBAcMDU1vdW50YWluIFZpZXcxFDASBgNVBAoMC0dvb2dsZSwg
 639 SW5jMRcwFQYDVQQDDA53d3cuZ29vZ2xlLmNvbTEjMCEGCSqGSIb3DQEJARYUZ29s
 640 YW5nLWRldkBnbWFpbC5jb20wdjAQBgcqhkjOPQIBBgUrgQQAIgNiAARRuzRNIKRK
 641 jIktEmXanNmrTR/q/FaHXLhWRZ6nHWe26Fw7Rsrbk+VjGy4vfWtNn7xSFKrOu5ze
 642 qxKnmE0h5E480MNgrUiRkaGO2GMJJVmxx20aqkXOk59U8yGA4CghE6MwCgYIKoZI
 643 zj0EAwIDZwAwZAIwBZEN8gvmRmfeP/9C1PRLzODIY4JqWub2PLRT4mv9GU+yw3Gr
 644 PU9A3CHMdEcdw/MEAjBBO1lId8KOCh9UZunsSMfqXiVurpzmhWd6VYZ/32G+M+Mh
 645 3yILeYQzllt/g0rKVRk=
 646 -----END CERTIFICATE-----
 647 `
 648
 649 // Self-signed certificate using ECDSA with SHA384 & secp521r1
 650 var ecdsaSHA384p521CertPem = `
 651 -----BEGIN CERTIFICATE-----
 652 MIICljCCAfcCCQDhp1AFD/ahKjAKBggqhkjOPQQDAzCBjjELMAkGA1UEBhMCVVMx
 653 EzARBgNVBAgMCkNhbGlmb3JuaWExFjAUBgNVBAcMDU1vdW50YWluIFZpZXcxFDAS
 654 BgNVBAoMC0dvb2dsZSwgSW5jMRcwFQYDVQQDDA53d3cuZ29vZ2xlLmNvbTEjMCEG
 655 CSqGSIb3DQEJARYUZ29sYW5nLWRldkBnbWFpbC5jb20wHhcNMTIwNTIxMTUwNDI5
 656 WhcNMjIwNTE5MTUwNDI5WjCBjjELMAkGA1UEBhMCVVMxEzARBgNVBAgMCkNhbGlm
 657 b3JuaWExFjAUBgNVBAcMDU1vdW50YWluIFZpZXcxFDASBgNVBAoMC0dvb2dsZSwg
 658 SW5jMRcwFQYDVQQDDA53d3cuZ29vZ2xlLmNvbTEjMCEGCSqGSIb3DQEJARYUZ29s
 659 YW5nLWRldkBnbWFpbC5jb20wgZswEAYHKoZIzj0CAQYFK4EEACMDgYYABACqx9Rv
 660 IssRs1LWYcNN+WffwlHw4Tv3y8/LIAA9MF1ZScIonU9nRMxt4a2uGJVCPDw6JHpz
 661 PaYc0E9puLoE9AfKpwFr59Jkot7dBg55SKPEFkddoip/rvmN7NPAWjMBirOwjOkm
 662 8FPthvPhGPqsu9AvgVuHu3PosWiHGNrhh379pva8MzAKBggqhkjOPQQDAwOBjAAw
 663 gYgCQgEHNmswkUdPpHqrVxp9PvLVl+xxPuHBkT+75z9JizyxtqykHQo9Uh6SWCYH
 664 BF9KLolo01wMt8DjoYP5Fb3j5MH7xwJCAbWZzTOp4l4DPkIvAh4LeC4VWbwPPyqh
 665 kBg71w/iEcSY3wUKgHGcJJrObZw7wys91I5kENljqw/Samdr3ka+jBJa
 666 -----END CERTIFICATE-----
 667 `
 668
 669 var ecdsaTests = []struct {
 670         sigAlgo SignatureAlgorithm
 671         pemCert string
 672 }{
 673         {ECDSAWithSHA1, ecdsaSHA1CertPem},
 674         {ECDSAWithSHA256, ecdsaSHA256p256CertPem},
 675         {ECDSAWithSHA256, ecdsaSHA256p384CertPem},
 676         {ECDSAWithSHA384, ecdsaSHA384p521CertPem},
 677 }
 678
 679 func TestECDSA(t *testing.T) {
 680         for i, test := range ecdsaTests {
 681                 pemBlock, _ := pem.Decode([]byte(test.pemCert))
 682                 cert, err := ParseCertificate(pemBlock.Bytes)
 683                 if err != nil {
 684                         t.Errorf("%d: failed to parse certificate: %s", i, err)
 685                         continue
 686                 }
 687                 if sa := cert.SignatureAlgorithm; sa != test.sigAlgo {
 688                         t.Errorf("%d: signature algorithm is %v, want %v", i, sa, test.sigAlgo)
 689                 }
 690                 if parsedKey, ok := cert.PublicKey.(*ecdsa.PublicKey); !ok {
 691                         t.Errorf("%d: wanted an ECDSA public key but found: %#v", i, parsedKey)
 692                 }
 693                 if pka := cert.PublicKeyAlgorithm; pka != ECDSA {
 694                         t.Errorf("%d: public key algorithm is %v, want ECDSA", i, pka)
 695                 }
 696                 if err = cert.CheckSignatureFrom(cert); err != nil {
 697                         t.Errorf("%d: certificate verification failed: %s", i, err)
 698                 }
 699         }
 700 }
 701
 702 // Self-signed certificate using DSA with SHA1
 703 var dsaCertPem = `-----BEGIN CERTIFICATE-----
 704 MIIEDTCCA82gAwIBAgIJALHPghaoxeDhMAkGByqGSM44BAMweTELMAkGA1UEBhMC
 705 VVMxCzAJBgNVBAgTAk5DMQ8wDQYDVQQHEwZOZXd0b24xFDASBgNVBAoTC0dvb2ds
 706 ZSwgSW5jMRIwEAYDVQQDEwlKb24gQWxsaWUxIjAgBgkqhkiG9w0BCQEWE2pvbmFs
 707 bGllQGdvb2dsZS5jb20wHhcNMTEwNTE0MDMwMTQ1WhcNMTEwNjEzMDMwMTQ1WjB5
 708 MQswCQYDVQQGEwJVUzELMAkGA1UECBMCTkMxDzANBgNVBAcTBk5ld3RvbjEUMBIG
 709 A1UEChMLR29vZ2xlLCBJbmMxEjAQBgNVBAMTCUpvbiBBbGxpZTEiMCAGCSqGSIb3
 710 DQEJARYTam9uYWxsaWVAZ29vZ2xlLmNvbTCCAbcwggEsBgcqhkjOOAQBMIIBHwKB
 711 gQC8hLUnQ7FpFYu4WXTj6DKvXvz8QrJkNJCVMTpKAT7uBpobk32S5RrPKXocd4gN
 712 8lyGB9ggS03EVlEwXvSmO0DH2MQtke2jl9j1HLydClMf4sbx5V6TV9IFw505U1iW
 713 jL7awRMgxge+FsudtJK254FjMFo03ZnOQ8ZJJ9E6AEDrlwIVAJpnBn9moyP11Ox5
 714 Asc/5dnjb6dPAoGBAJFHd4KVv1iTVCvEG6gGiYop5DJh28hUQcN9kul+2A0yPUSC
 715 X93oN00P8Vh3eYgSaCWZsha7zDG53MrVJ0Zf6v/X/CoZNhLldeNOepivTRAzn+Rz
 716 kKUYy5l1sxYLHQKF0UGNCXfFKZT0PCmgU+PWhYNBBMn6/cIh44vp85ideo5CA4GE
 717 AAKBgFmifCafzeRaohYKXJgMGSEaggCVCRq5xdyDCat+wbOkjC4mfG01/um3G8u5
 718 LxasjlWRKTR/tcAL7t0QuokVyQaYdVypZXNaMtx1db7YBuHjj3aP+8JOQRI9xz8c
 719 bp5NDJ5pISiFOv4p3GZfqZPcqckDt78AtkQrmnal2txhhjF6o4HeMIHbMB0GA1Ud
 720 DgQWBBQVyyr7hO11ZFFpWX50298Sa3V+rzCBqwYDVR0jBIGjMIGggBQVyyr7hO11
 721 ZFFpWX50298Sa3V+r6F9pHsweTELMAkGA1UEBhMCVVMxCzAJBgNVBAgTAk5DMQ8w
 722 DQYDVQQHEwZOZXd0b24xFDASBgNVBAoTC0dvb2dsZSwgSW5jMRIwEAYDVQQDEwlK
 723 b24gQWxsaWUxIjAgBgkqhkiG9w0BCQEWE2pvbmFsbGllQGdvb2dsZS5jb22CCQCx
 724 z4IWqMXg4TAMBgNVHRMEBTADAQH/MAkGByqGSM44BAMDLwAwLAIUPtn/5j8Q1jJI
 725 7ggOIsgrhgUdjGQCFCsmDq1H11q9+9Wp9IMeGrTSKHIM
 726 -----END CERTIFICATE-----
 727 `
 728
 729 func TestParseCertificateWithDsaPublicKey(t *testing.T) {
 730         expectedKey := &dsa.PublicKey{
 731                 Parameters: dsa.Parameters{
 732                         P: bigFromHexString("00BC84B52743B169158BB85974E3E832AF5EFCFC42B264349095313A4A013EEE069A1B937D92E51ACF297A1C77880DF25C8607D8204B4DC45651305EF4A63B40C7D8C42D91EDA397D8F51CBC9D0A531FE2C6F1E55E9357D205C39D395358968CBEDAC11320C607BE16CB9DB492B6E78163305A34DD99CE43C64927D13A0040EB97"),
 733                         Q: bigFromHexString("009A67067F66A323F5D4EC7902C73FE5D9E36FA74F"),
 734                         G: bigFromHexString("009147778295BF5893542BC41BA806898A29E43261DBC85441C37D92E97ED80D323D44825FDDE8374D0FF15877798812682599B216BBCC31B9DCCAD527465FEAFFD7FC2A193612E575E34E7A98AF4D10339FE47390A518CB9975B3160B1D0285D1418D0977C52994F43C29A053E3D685834104C9FAFDC221E38BE9F3989D7A8E42"),
 735                 },
 736                 Y: bigFromHexString("59A27C269FCDE45AA2160A5C980C19211A820095091AB9C5DC8309AB7EC1B3A48C2E267C6D35FEE9B71BCBB92F16AC8E559129347FB5C00BEEDD10BA8915C90698755CA965735A32DC7575BED806E1E38F768FFBC24E41123DC73F1C6E9E4D0C9E692128853AFE29DC665FA993DCA9C903B7BF00B6442B9A76A5DADC6186317A"),
 737         }
 738         pemBlock, _ := pem.Decode([]byte(dsaCertPem))
 739         cert, err := ParseCertificate(pemBlock.Bytes)
 740         if err != nil {
 741                 t.Fatalf("Failed to parse certificate: %s", err)
 742         }
 743         if cert.PublicKeyAlgorithm != DSA {
 744                 t.Errorf("Parsed key algorithm was not DSA")
 745         }
 746         parsedKey, ok := cert.PublicKey.(*dsa.PublicKey)
 747         if !ok {
 748                 t.Fatalf("Parsed key was not a DSA key: %s", err)
 749         }
 750         if expectedKey.Y.Cmp(parsedKey.Y) != 0 ||
 751                 expectedKey.P.Cmp(parsedKey.P) != 0 ||
 752                 expectedKey.Q.Cmp(parsedKey.Q) != 0 ||
 753                 expectedKey.G.Cmp(parsedKey.G) != 0 {
 754                 t.Fatal("Parsed key differs from expected key")
 755         }
 756 }
 757
 758 func TestParseCertificateWithDSASignatureAlgorithm(t *testing.T) {
 759         pemBlock, _ := pem.Decode([]byte(dsaCertPem))
 760         cert, err := ParseCertificate(pemBlock.Bytes)
 761         if err != nil {
 762                 t.Fatalf("Failed to parse certificate: %s", err)
 763         }
 764         if cert.SignatureAlgorithm != DSAWithSHA1 {
 765                 t.Errorf("Parsed signature algorithm was not DSAWithSHA1")
 766         }
 767 }
 768
 769 func TestVerifyCertificateWithDSASignature(t *testing.T) {
 770         pemBlock, _ := pem.Decode([]byte(dsaCertPem))
 771         cert, err := ParseCertificate(pemBlock.Bytes)
 772         if err != nil {
 773                 t.Fatalf("Failed to parse certificate: %s", err)
 774         }
 775         // test cert is self-signed
 776         if err = cert.CheckSignatureFrom(cert); err != nil {
 777                 t.Fatalf("DSA Certificate verification failed: %s", err)
 778         }
 779 }
 780
 781 var rsaPSSSelfSignedPEM = `-----BEGIN CERTIFICATE-----
 782 MIIGHjCCA9KgAwIBAgIBdjBBBgkqhkiG9w0BAQowNKAPMA0GCWCGSAFlAwQCAQUA
 783 oRwwGgYJKoZIhvcNAQEIMA0GCWCGSAFlAwQCAQUAogMCASAwbjELMAkGA1UEBhMC
 784 SlAxHDAaBgNVBAoME0phcGFuZXNlIEdvdmVybm1lbnQxKDAmBgNVBAsMH1RoZSBN
 785 aW5pc3RyeSBvZiBGb3JlaWduIEFmZmFpcnMxFzAVBgNVBAMMDmUtcGFzc3BvcnRD
 786 U0NBMB4XDTEzMDUxNDA1MDczMFoXDTI5MDUxNDA1MDczMFowbjELMAkGA1UEBhMC
 787 SlAxHDAaBgNVBAoME0phcGFuZXNlIEdvdmVybm1lbnQxKDAmBgNVBAsMH1RoZSBN
 788 aW5pc3RyeSBvZiBGb3JlaWduIEFmZmFpcnMxFzAVBgNVBAMMDmUtcGFzc3BvcnRD
 789 U0NBMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAx/E3WRVxcCDXhoST
 790 8nVSLjW6hwM4Ni99AegWzcGtfGFo0zjFA1Cl5URqxauvYu3gQgQHBGA1CovWeGrl
 791 yVSRzOL1imcYsSgLOcnhVYB3Xcrof4ebv9+W+TwNdc9YzAwcj8rNd5nP6PKXIQ+W
 792 PCkEOXdyb80YEnxuT+NPjkVfFSPBS7QYZpvT2fwy4fZ0eh48253+7VleSmTO0mqj
 793 7TlzaG56q150SLZbhpOd8jD8bM/wACnLCPR88wj4hCcDLEwoLyY85HJCTIQQMnoT
 794 UpqyzEeupPREIm6yi4d8C9YqIWFn2YTnRcWcmMaJLzq+kYwKoudfnoC6RW2vzZXn
 795 defQs68IZuK+uALu9G3JWGPgu0CQGj0JNDT8zkiDV++4eNrZczWKjr1YnAL+VbLK
 796 bApwL2u19l2WDpfUklimhWfraqHNIUKU6CjZOG31RzXcplIj0mtqs0E1r7r357Es
 797 yFoB28iNo4cz1lCulh0E4WJzWzLZcT4ZspHHRCFyvYnXoibXEV1nULq8ByKKG0FS
 798 7nn4SseoV+8PvjHLPhmHGMvi4mxkbcXdV3wthHT1/HXdqY84A4xHWt1+sB/TpTek
 799 tDhFlEfcUygvTu58UtOnysomOVVeERmi7WSujfzKsGJAJYeetiA5R+zX7BxeyFVE
 800 qW0zh1Tkwh0S8LRe5diJh4+6FG0CAwEAAaNfMF0wHQYDVR0OBBYEFD+oahaikBTV
 801 Urk81Uz7kRS2sx0aMA4GA1UdDwEB/wQEAwIBBjAYBgNVHSAEETAPMA0GCyqDCIaP
 802 fgYFAQEBMBIGA1UdEwEB/wQIMAYBAf8CAQAwQQYJKoZIhvcNAQEKMDSgDzANBglg
 803 hkgBZQMEAgEFAKEcMBoGCSqGSIb3DQEBCDANBglghkgBZQMEAgEFAKIDAgEgA4IC
 804 AQAaxWBQn5CZuNBfyzL57mn31ukHUFd61OMROSX3PT7oCv1Dy+C2AdRlxOcbN3/n
 805 li0yfXUUqiY3COlLAHKRlkr97mLtxEFoJ0R8nVN2IQdChNQM/XSCzSGyY8NVa1OR
 806 TTpEWLnexJ9kvIdbFXwUqdTnAkOI0m7Rg8j+E+lRRHg1xDAA1qKttrtUj3HRQWf3
 807 kNTu628SiMvap6aIdncburaK56MP7gkR1Wr/ichOfjIA3Jgw2PapI31i0GqeMd66
 808 U1+lC9FeyMAJpuSVp/SoiYzYo+79SFcVoM2yw3yAnIKg7q9GLYYqzncdykT6C06c
 809 15gWFI6igmReAsD9ITSvYh0jLrLHfEYcPTOD3ZXJ4EwwHtWSoO3gq1EAtOYKu/Lv
 810 C8zfBsZcFdsHvsSiYeBU8Oioe42mguky3Ax9O7D805Ek6R68ra07MW/G4YxvV7IN
 811 2BfSaYy8MX9IG0ZMIOcoc0FeF5xkFmJ7kdrlTaJzC0IE9PNxNaH5QnOAFB8vxHcO
 812 FioUxb6UKdHcPLR1VZtAdTdTMjSJxUqD/35Cdfqs7oDJXz8f6TXO2Tdy6G++YUs9
 813 qsGZWxzFvvkXUkQSl0dQQ5jO/FtUJcAVXVVp20LxPemfatAHpW31WdJYeWSQWky2
 814 +f9b5TXKXVyjlUL7uHxowWrT2AtTchDH22wTEtqLEF9Z3Q==
 815 -----END CERTIFICATE-----`
 816
 817 func TestRSAPSSSelfSigned(t *testing.T) {
 818         der, _ := pem.Decode([]byte(rsaPSSSelfSignedPEM))
 819         if der == nil {
 820                 t.Fatal("Failed to find PEM block")
 821         }
 822
 823         cert, err := ParseCertificate(der.Bytes)
 824         if err != nil {
 825                 t.Fatal(err)
 826         }
 827
 828         if err = cert.CheckSignatureFrom(cert); err != nil {
 829                 t.Fatal(err)
 830         }
 831 }
 832
 833 const pemCertificate = `-----BEGIN CERTIFICATE-----
 834 MIIDATCCAemgAwIBAgIRAKQkkrFx1T/dgB/Go/xBM5swDQYJKoZIhvcNAQELBQAw
 835 EjEQMA4GA1UEChMHQWNtZSBDbzAeFw0xNjA4MTcyMDM2MDdaFw0xNzA4MTcyMDM2
 836 MDdaMBIxEDAOBgNVBAoTB0FjbWUgQ28wggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAw
 837 ggEKAoIBAQDAoJtjG7M6InsWwIo+l3qq9u+g2rKFXNu9/mZ24XQ8XhV6PUR+5HQ4
 838 jUFWC58ExYhottqK5zQtKGkw5NuhjowFUgWB/VlNGAUBHtJcWR/062wYrHBYRxJH
 839 qVXOpYKbIWwFKoXu3hcpg/CkdOlDWGKoZKBCwQwUBhWE7MDhpVdQ+ZljUJWL+FlK
 840 yQK5iRsJd5TGJ6VUzLzdT4fmN2DzeK6GLeyMpVpU3sWV90JJbxWQ4YrzkKzYhMmB
 841 EcpXTG2wm+ujiHU/k2p8zlf8Sm7VBM/scmnMFt0ynNXop4FWvJzEm1G0xD2t+e2I
 842 5Utr04dOZPCgkm++QJgYhtZvgW7ZZiGTAgMBAAGjUjBQMA4GA1UdDwEB/wQEAwIF
 843 oDATBgNVHSUEDDAKBggrBgEFBQcDATAMBgNVHRMBAf8EAjAAMBsGA1UdEQQUMBKC
 844 EHRlc3QuZXhhbXBsZS5jb20wDQYJKoZIhvcNAQELBQADggEBADpqKQxrthH5InC7
 845 X96UP0OJCu/lLEMkrjoEWYIQaFl7uLPxKH5AmQPH4lYwF7u7gksR7owVG9QU9fs6
 846 1fK7II9CVgCd/4tZ0zm98FmU4D0lHGtPARrrzoZaqVZcAvRnFTlPX5pFkPhVjjai
 847 /mkxX9LpD8oK1445DFHxK5UjLMmPIIWd8EOi+v5a+hgGwnJpoW7hntSl8kHMtTmy
 848 fnnktsblSUV4lRCit0ymC7Ojhe+gzCCwkgs5kDzVVag+tnl/0e2DloIjASwOhpbH
 849 KVcg7fBd484ht/sS+l0dsB4KDOSpd8JzVDMF8OZqlaydizoJO0yWr9GbCN1+OKq5
 850 EhLrEqU=
 851 -----END CERTIFICATE-----`
 852
 853 func TestCRLCreation(t *testing.T) {
 854         block, _ := pem.Decode([]byte(pemPrivateKey))
 855         priv, _ := ParsePKCS1PrivateKey(block.Bytes)
 856         block, _ = pem.Decode([]byte(pemCertificate))
 857         cert, _ := ParseCertificate(block.Bytes)
 858
 859         loc := time.FixedZone("Oz/Atlantis", int((2 * time.Hour).Seconds()))
 860
 861         now := time.Unix(1000, 0).In(loc)
 862         nowUTC := now.UTC()
 863         expiry := time.Unix(10000, 0)
 864
 865         revokedCerts := []pkix.RevokedCertificate{
 866                 {
 867                         SerialNumber:   big.NewInt(1),
 868                         RevocationTime: nowUTC,
 869                 },
 870                 {
 871                         SerialNumber: big.NewInt(42),
 872                         // RevocationTime should be converted to UTC before marshaling.
 873                         RevocationTime: now,
 874                 },
 875         }
 876         expectedCerts := []pkix.RevokedCertificate{
 877                 {
 878                         SerialNumber:   big.NewInt(1),
 879                         RevocationTime: nowUTC,
 880                 },
 881                 {
 882                         SerialNumber:   big.NewInt(42),
 883                         RevocationTime: nowUTC,
 884                 },
 885         }
 886
 887         crlBytes, err := cert.CreateCRL(rand.Reader, priv, revokedCerts, now, expiry)
 888         if err != nil {
 889                 t.Errorf("error creating CRL: %s", err)
 890         }
 891
 892         parsedCRL, err := ParseDERCRL(crlBytes)
 893         if err != nil {
 894                 t.Errorf("error reparsing CRL: %s", err)
 895         }
 896         if !reflect.DeepEqual(parsedCRL.TBSCertList.RevokedCertificates, expectedCerts) {
 897                 t.Errorf("RevokedCertificates mismatch: got %v; want %v.",
 898                         parsedCRL.TBSCertList.RevokedCertificates, expectedCerts)
 899         }
 900 }
 901
 902 func fromBase64(in string) []byte {
 903         out := make([]byte, base64.StdEncoding.DecodedLen(len(in)))
 904         n, err := base64.StdEncoding.Decode(out, []byte(in))
 905         if err != nil {
 906                 panic("failed to base64 decode")
 907         }
 908         return out[:n]
 909 }
 910
 911 func TestParseDERCRL(t *testing.T) {
 912         derBytes := fromBase64(derCRLBase64)
 913         certList, err := ParseDERCRL(derBytes)
 914         if err != nil {
 915                 t.Errorf("error parsing: %s", err)
 916                 return
 917         }
 918         numCerts := len(certList.TBSCertList.RevokedCertificates)
 919         expected := 88
 920         if numCerts != expected {
 921                 t.Errorf("bad number of revoked certificates. got: %d want: %d", numCerts, expected)
 922         }
 923
 924         if certList.HasExpired(time.Unix(1302517272, 0)) {
 925                 t.Errorf("CRL has expired (but shouldn't have)")
 926         }
 927
 928         // Can't check the signature here without a package cycle.
 929 }
 930
 931 func TestCRLWithoutExpiry(t *testing.T) {
 932         derBytes := fromBase64("MIHYMIGZMAkGByqGSM44BAMwEjEQMA4GA1UEAxMHQ2FybERTUxcNOTkwODI3MDcwMDAwWjBpMBMCAgDIFw05OTA4MjIwNzAwMDBaMBMCAgDJFw05OTA4MjIwNzAwMDBaMBMCAgDTFw05OTA4MjIwNzAwMDBaMBMCAgDSFw05OTA4MjIwNzAwMDBaMBMCAgDUFw05OTA4MjQwNzAwMDBaMAkGByqGSM44BAMDLwAwLAIUfmVSdjP+NHMX0feW+aDU2G1cfT0CFAJ6W7fVWxjBz4fvftok8yqDnDWh")
 933         certList, err := ParseDERCRL(derBytes)
 934         if err != nil {
 935                 t.Fatal(err)
 936         }
 937         if !certList.TBSCertList.NextUpdate.IsZero() {
 938                 t.Errorf("NextUpdate is not the zero value")
 939         }
 940 }
 941
 942 func TestParsePEMCRL(t *testing.T) {
 943         pemBytes := fromBase64(pemCRLBase64)
 944         certList, err := ParseCRL(pemBytes)
 945         if err != nil {
 946                 t.Errorf("error parsing: %s", err)
 947                 return
 948         }
 949         numCerts := len(certList.TBSCertList.RevokedCertificates)
 950         expected := 2
 951         if numCerts != expected {
 952                 t.Errorf("bad number of revoked certificates. got: %d want: %d", numCerts, expected)
 953         }
 954
 955         if certList.HasExpired(time.Unix(1302517272, 0)) {
 956                 t.Errorf("CRL has expired (but shouldn't have)")
 957         }
 958
 959         // Can't check the signature here without a package cycle.
 960 }
 961
 962 func TestImports(t *testing.T) {
 963         testenv.MustHaveGoRun(t)
 964
 965         if err := exec.Command(testenv.GoToolPath(t), "run", "x509_test_import.go").Run(); err != nil {
 966                 t.Errorf("failed to run x509_test_import.go: %s", err)
 967         }
 968 }
 969
 970 const derCRLBase64 = "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"
 971
 972 const pemCRLBase64 = "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"
 973
 974 func TestCreateCertificateRequest(t *testing.T) {
 975         random := rand.Reader
 976
 977         ecdsa256Priv, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
 978         if err != nil {
 979                 t.Fatalf("Failed to generate ECDSA key: %s", err)
 980         }
 981
 982         ecdsa384Priv, err := ecdsa.GenerateKey(elliptic.P384(), rand.Reader)
 983         if err != nil {
 984                 t.Fatalf("Failed to generate ECDSA key: %s", err)
 985         }
 986
 987         ecdsa521Priv, err := ecdsa.GenerateKey(elliptic.P521(), rand.Reader)
 988         if err != nil {
 989                 t.Fatalf("Failed to generate ECDSA key: %s", err)
 990         }
 991
 992         tests := []struct {
 993                 name    string
 994                 priv    interface{}
 995                 sigAlgo SignatureAlgorithm
 996         }{
 997                 {"RSA", testPrivateKey, SHA1WithRSA},
 998                 {"ECDSA-256", ecdsa256Priv, ECDSAWithSHA1},
 999                 {"ECDSA-384", ecdsa384Priv, ECDSAWithSHA1},
1000                 {"ECDSA-521", ecdsa521Priv, ECDSAWithSHA1},
1001         }
1002
1003         for _, test := range tests {
1004                 template := CertificateRequest{
1005                         Subject: pkix.Name{
1006                                 CommonName:   "test.example.com",
1007                                 Organization: []string{"Σ Acme Co"},
1008                         },
1009                         SignatureAlgorithm: test.sigAlgo,
1010                         DNSNames:           []string{"test.example.com"},
1011                         EmailAddresses:     []string{"gopher@golang.org"},
1012                         IPAddresses:        []net.IP{net.IPv4(127, 0, 0, 1).To4(), net.ParseIP("2001:4860:0:2001::68")},
1013                 }
1014
1015                 derBytes, err := CreateCertificateRequest(random, &template, test.priv)
1016                 if err != nil {
1017                         t.Errorf("%s: failed to create certificate request: %s", test.name, err)
1018                         continue
1019                 }
1020
1021                 out, err := ParseCertificateRequest(derBytes)
1022                 if err != nil {
1023                         t.Errorf("%s: failed to create certificate request: %s", test.name, err)
1024                         continue
1025                 }
1026
1027                 err = out.CheckSignature()
1028                 if err != nil {
1029                         t.Errorf("%s: failed to check certificate request signature: %s", test.name, err)
1030                         continue
1031                 }
1032
1033                 if out.Subject.CommonName != template.Subject.CommonName {
1034                         t.Errorf("%s: output subject common name and template subject common name don't match", test.name)
1035                 } else if len(out.Subject.Organization) != len(template.Subject.Organization) {
1036                         t.Errorf("%s: output subject organisation and template subject organisation don't match", test.name)
1037                 } else if len(out.DNSNames) != len(template.DNSNames) {
1038                         t.Errorf("%s: output DNS names and template DNS names don't match", test.name)
1039                 } else if len(out.EmailAddresses) != len(template.EmailAddresses) {
1040                         t.Errorf("%s: output email addresses and template email addresses don't match", test.name)
1041                 } else if len(out.IPAddresses) != len(template.IPAddresses) {
1042                         t.Errorf("%s: output IP addresses and template IP addresses names don't match", test.name)
1043                 }
1044         }
1045 }
1046
1047 func marshalAndParseCSR(t *testing.T, template *CertificateRequest) *CertificateRequest {
1048         derBytes, err := CreateCertificateRequest(rand.Reader, template, testPrivateKey)
1049         if err != nil {
1050                 t.Fatal(err)
1051         }
1052
1053         csr, err := ParseCertificateRequest(derBytes)
1054         if err != nil {
1055                 t.Fatal(err)
1056         }
1057
1058         return csr
1059 }
1060
1061 func TestCertificateRequestOverrides(t *testing.T) {
1062         sanContents, err := marshalSANs([]string{"foo.example.com"}, nil, nil)
1063         if err != nil {
1064                 t.Fatal(err)
1065         }
1066
1067         template := CertificateRequest{
1068                 Subject: pkix.Name{
1069                         CommonName:   "test.example.com",
1070                         Organization: []string{"Σ Acme Co"},
1071                 },
1072                 DNSNames: []string{"test.example.com"},
1073
1074                 // An explicit extension should override the DNSNames from the
1075                 // template.
1076                 ExtraExtensions: []pkix.Extension{
1077                         {
1078                                 Id:    oidExtensionSubjectAltName,
1079                                 Value: sanContents,
1080                         },
1081                 },
1082         }
1083
1084         csr := marshalAndParseCSR(t, &template)
1085
1086         if len(csr.DNSNames) != 1 || csr.DNSNames[0] != "foo.example.com" {
1087                 t.Errorf("Extension did not override template. Got %v\n", csr.DNSNames)
1088         }
1089
1090         // If there is already an attribute with X.509 extensions then the
1091         // extra extensions should be added to it rather than creating a CSR
1092         // with two extension attributes.
1093
1094         template.Attributes = []pkix.AttributeTypeAndValueSET{
1095                 {
1096                         Type: oidExtensionRequest,
1097                         Value: [][]pkix.AttributeTypeAndValue{
1098                                 {
1099                                         {
1100                                                 Type:  oidExtensionAuthorityInfoAccess,
1101                                                 Value: []byte("foo"),
1102                                         },
1103                                 },
1104                         },
1105                 },
1106         }
1107
1108         csr = marshalAndParseCSR(t, &template)
1109         if l := len(csr.Attributes); l != 1 {
1110                 t.Errorf("incorrect number of attributes: %d\n", l)
1111         }
1112
1113         if !csr.Attributes[0].Type.Equal(oidExtensionRequest) ||
1114                 len(csr.Attributes[0].Value) != 1 ||
1115                 len(csr.Attributes[0].Value[0]) != 2 {
1116                 t.Errorf("bad attributes: %#v\n", csr.Attributes)
1117         }
1118
1119         sanContents2, err := marshalSANs([]string{"foo2.example.com"}, nil, nil)
1120         if err != nil {
1121                 t.Fatal(err)
1122         }
1123
1124         // Extensions in Attributes should override those in ExtraExtensions.
1125         template.Attributes[0].Value[0] = append(template.Attributes[0].Value[0], pkix.AttributeTypeAndValue{
1126                 Type:  oidExtensionSubjectAltName,
1127                 Value: sanContents2,
1128         })
1129
1130         csr = marshalAndParseCSR(t, &template)
1131
1132         if len(csr.DNSNames) != 1 || csr.DNSNames[0] != "foo2.example.com" {
1133                 t.Errorf("Attributes did not override ExtraExtensions. Got %v\n", csr.DNSNames)
1134         }
1135 }
1136
1137 func TestParseCertificateRequest(t *testing.T) {
1138         for _, csrBase64 := range csrBase64Array {
1139                 csrBytes := fromBase64(csrBase64)
1140                 csr, err := ParseCertificateRequest(csrBytes)
1141                 if err != nil {
1142                         t.Fatalf("failed to parse CSR: %s", err)
1143                 }
1144
1145                 if len(csr.EmailAddresses) != 1 || csr.EmailAddresses[0] != "gopher@golang.org" {
1146                         t.Errorf("incorrect email addresses found: %v", csr.EmailAddresses)
1147                 }
1148
1149                 if len(csr.DNSNames) != 1 || csr.DNSNames[0] != "test.example.com" {
1150                         t.Errorf("incorrect DNS names found: %v", csr.DNSNames)
1151                 }
1152
1153                 if len(csr.Subject.Country) != 1 || csr.Subject.Country[0] != "AU" {
1154                         t.Errorf("incorrect Subject name: %v", csr.Subject)
1155                 }
1156
1157                 found := false
1158                 for _, e := range csr.Extensions {
1159                         if e.Id.Equal(oidExtensionBasicConstraints) {
1160                                 found = true
1161                                 break
1162                         }
1163                 }
1164                 if !found {
1165                         t.Errorf("basic constraints extension not found in CSR")
1166                 }
1167         }
1168 }
1169
1170 func TestCriticalFlagInCSRRequestedExtensions(t *testing.T) {
1171         // This CSR contains an extension request where the extensions have a
1172         // critical flag in them. In the past we failed to handle this.
1173         const csrBase64 = "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"
1174
1175         csrBytes := fromBase64(csrBase64)
1176         csr, err := ParseCertificateRequest(csrBytes)
1177         if err != nil {
1178                 t.Fatalf("failed to parse CSR: %s", err)
1179         }
1180
1181         expected := []struct {
1182                 Id    asn1.ObjectIdentifier
1183                 Value []byte
1184         }{
1185                 {oidExtensionBasicConstraints, fromBase64("MAYBAf8CAQA=")},
1186                 {oidExtensionKeyUsage, fromBase64("AwIChA==")},
1187         }
1188
1189         if n := len(csr.Extensions); n != len(expected) {
1190                 t.Fatalf("expected to find %d extensions but found %d", len(expected), n)
1191         }
1192
1193         for i, extension := range csr.Extensions {
1194                 if !extension.Id.Equal(expected[i].Id) {
1195                         t.Fatalf("extension #%d has unexpected type %v (expected %v)", i, extension.Id, expected[i].Id)
1196                 }
1197
1198                 if !bytes.Equal(extension.Value, expected[i].Value) {
1199                         t.Fatalf("extension #%d has unexpected contents %x (expected %x)", i, extension.Value, expected[i].Value)
1200                 }
1201         }
1202 }
1203
1204 // serialiseAndParse generates a self-signed certificate from template and
1205 // returns a parsed version of it.
1206 func serialiseAndParse(t *testing.T, template *Certificate) *Certificate {
1207         derBytes, err := CreateCertificate(rand.Reader, template, template, &testPrivateKey.PublicKey, testPrivateKey)
1208         if err != nil {
1209                 t.Fatalf("failed to create certificate: %s", err)
1210                 return nil
1211         }
1212
1213         cert, err := ParseCertificate(derBytes)
1214         if err != nil {
1215                 t.Fatalf("failed to parse certificate: %s", err)
1216                 return nil
1217         }
1218
1219         return cert
1220 }
1221
1222 func TestMaxPathLen(t *testing.T) {
1223         template := &Certificate{
1224                 SerialNumber: big.NewInt(1),
1225                 Subject: pkix.Name{
1226                         CommonName: "Σ Acme Co",
1227                 },
1228                 NotBefore: time.Unix(1000, 0),
1229                 NotAfter:  time.Unix(100000, 0),
1230
1231                 BasicConstraintsValid: true,
1232                 IsCA: true,
1233         }
1234
1235         cert1 := serialiseAndParse(t, template)
1236         if m := cert1.MaxPathLen; m != -1 {
1237                 t.Errorf("Omitting MaxPathLen didn't turn into -1, got %d", m)
1238         }
1239         if cert1.MaxPathLenZero {
1240                 t.Errorf("Omitting MaxPathLen resulted in MaxPathLenZero")
1241         }
1242
1243         template.MaxPathLen = 1
1244         cert2 := serialiseAndParse(t, template)
1245         if m := cert2.MaxPathLen; m != 1 {
1246                 t.Errorf("Setting MaxPathLen didn't work. Got %d but set 1", m)
1247         }
1248         if cert2.MaxPathLenZero {
1249                 t.Errorf("Setting MaxPathLen resulted in MaxPathLenZero")
1250         }
1251
1252         template.MaxPathLen = 0
1253         template.MaxPathLenZero = true
1254         cert3 := serialiseAndParse(t, template)
1255         if m := cert3.MaxPathLen; m != 0 {
1256                 t.Errorf("Setting MaxPathLenZero didn't work, got %d", m)
1257         }
1258         if !cert3.MaxPathLenZero {
1259                 t.Errorf("Setting MaxPathLen to zero didn't result in MaxPathLenZero")
1260         }
1261 }
1262
1263 func TestNoAuthorityKeyIdInSelfSignedCert(t *testing.T) {
1264         template := &Certificate{
1265                 SerialNumber: big.NewInt(1),
1266                 Subject: pkix.Name{
1267                         CommonName: "Σ Acme Co",
1268                 },
1269                 NotBefore: time.Unix(1000, 0),
1270                 NotAfter:  time.Unix(100000, 0),
1271
1272                 BasicConstraintsValid: true,
1273                 IsCA:         true,
1274                 SubjectKeyId: []byte{1, 2, 3, 4},
1275         }
1276
1277         if cert := serialiseAndParse(t, template); len(cert.AuthorityKeyId) != 0 {
1278                 t.Fatalf("self-signed certificate contained default authority key id")
1279         }
1280
1281         template.AuthorityKeyId = []byte{1, 2, 3, 4}
1282         if cert := serialiseAndParse(t, template); len(cert.AuthorityKeyId) == 0 {
1283                 t.Fatalf("self-signed certificate erased explicit authority key id")
1284         }
1285 }
1286
1287 func TestASN1BitLength(t *testing.T) {
1288         tests := []struct {
1289                 bytes  []byte
1290                 bitLen int
1291         }{
1292                 {nil, 0},
1293                 {[]byte{0x00}, 0},
1294                 {[]byte{0x00, 0x00}, 0},
1295                 {[]byte{0xf0}, 4},
1296                 {[]byte{0x88}, 5},
1297                 {[]byte{0xff}, 8},
1298                 {[]byte{0xff, 0x80}, 9},
1299                 {[]byte{0xff, 0x81}, 16},
1300         }
1301
1302         for i, test := range tests {
1303                 if got := asn1BitLength(test.bytes); got != test.bitLen {
1304                         t.Errorf("#%d: calculated bit-length of %d for %x, wanted %d", i, got, test.bytes, test.bitLen)
1305                 }
1306         }
1307 }
1308
1309 func TestVerifyEmptyCertificate(t *testing.T) {
1310         if _, err := new(Certificate).Verify(VerifyOptions{}); err != errNotParsed {
1311                 t.Errorf("Verifying empty certificate resulted in unexpected error: %q (wanted %q)", err, errNotParsed)
1312         }
1313 }
1314
1315 func TestInsecureAlgorithmErrorString(t *testing.T) {
1316         tests := []struct {
1317                 sa   SignatureAlgorithm
1318                 want string
1319         }{
1320                 {MD2WithRSA, "x509: cannot verify signature: insecure algorithm MD2-RSA"},
1321                 {-1, "x509: cannot verify signature: insecure algorithm -1"},
1322                 {0, "x509: cannot verify signature: insecure algorithm 0"},
1323                 {9999, "x509: cannot verify signature: insecure algorithm 9999"},
1324         }
1325         for i, tt := range tests {
1326                 if got := fmt.Sprint(InsecureAlgorithmError(tt.sa)); got != tt.want {
1327                         t.Errorf("%d. mismatch.\n got: %s\nwant: %s\n", i, got, tt.want)
1328                 }
1329         }
1330 }
1331
1332 // These CSR was generated with OpenSSL:
1333 //  openssl req -out CSR.csr -new -sha256 -nodes -keyout privateKey.key -config openssl.cnf
1334 //
1335 // With openssl.cnf containing the following sections:
1336 //   [ v3_req ]
1337 //   basicConstraints = CA:FALSE
1338 //   keyUsage = nonRepudiation, digitalSignature, keyEncipherment
1339 //   subjectAltName = email:gopher@golang.org,DNS:test.example.com
1340 //   [ req_attributes ]
1341 //   challengePassword = ignored challenge
1342 //   unstructuredName  = ignored unstructured name
1343 var csrBase64Array = [...]string{
1344         // Just [ v3_req ]
1345         "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",
1346         // Both [ v3_req ] and [ req_attributes ]
1347         "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",
1348 }
1349
1350 var md5cert = `
1351 -----BEGIN CERTIFICATE-----
1352 MIIB4TCCAUoCCQCfmw3vMgPS5TANBgkqhkiG9w0BAQQFADA1MQswCQYDVQQGEwJB
1353 VTETMBEGA1UECBMKU29tZS1TdGF0ZTERMA8GA1UEChMITUQ1IEluYy4wHhcNMTUx
1354 MjAzMTkyOTMyWhcNMjkwODEyMTkyOTMyWjA1MQswCQYDVQQGEwJBVTETMBEGA1UE
1355 CBMKU29tZS1TdGF0ZTERMA8GA1UEChMITUQ1IEluYy4wgZ8wDQYJKoZIhvcNAQEB
1356 BQADgY0AMIGJAoGBANrq2nhLQj5mlXbpVX3QUPhfEm/vdEqPkoWtR/jRZIWm4WGf
1357 Wpq/LKHJx2Pqwn+t117syN8l4U5unyAi1BJSXjBwPZNd7dXjcuJ+bRLV7FZ/iuvs
1358 cfYyQQFTxan4TaJMd0x1HoNDbNbjHa02IyjjYE/r3mb/PIg+J2t5AZEh80lPAgMB
1359 AAEwDQYJKoZIhvcNAQEEBQADgYEAjGzp3K3ey/YfKHohf33yHHWd695HQxDAP+wY
1360 cs9/TAyLR+gJzJP7d18EcDDLJWVi7bhfa4EAD86di05azOh9kWSn4b3o9QYRGCSw
1361 GNnI3Zk0cwNKA49hZntKKiy22DhRk7JAHF01d6Bu3KkHkmENrtJ+zj/+159WAnUa
1362 qViorq4=
1363 -----END CERTIFICATE-----
1364 `
1365
1366 func TestMD5(t *testing.T) {
1367         pemBlock, _ := pem.Decode([]byte(md5cert))
1368         cert, err := ParseCertificate(pemBlock.Bytes)
1369         if err != nil {
1370                 t.Fatalf("failed to parse certificate: %s", err)
1371         }
1372         if sa := cert.SignatureAlgorithm; sa != MD5WithRSA {
1373                 t.Errorf("signature algorithm is %v, want %v", sa, MD5WithRSA)
1374         }
1375         if err = cert.CheckSignatureFrom(cert); err == nil {
1376                 t.Fatalf("certificate verification succeeded incorrectly")
1377         }
1378         if _, ok := err.(InsecureAlgorithmError); !ok {
1379                 t.Fatalf("certificate verification returned %v (%T), wanted InsecureAlgorithmError", err, err)
1380         }
1381 }
1382
1383 // certMissingRSANULL contains an RSA public key where the AlgorithmIdentifer
1384 // parameters are omitted rather than being an ASN.1 NULL.
1385 const certMissingRSANULL = `
1386 -----BEGIN CERTIFICATE-----
1387 MIIB7TCCAVigAwIBAgIBADALBgkqhkiG9w0BAQUwJjEQMA4GA1UEChMHQWNtZSBD
1388 bzESMBAGA1UEAxMJMTI3LjAuMC4xMB4XDTExMTIwODA3NTUxMloXDTEyMTIwNzA4
1389 MDAxMlowJjEQMA4GA1UEChMHQWNtZSBDbzESMBAGA1UEAxMJMTI3LjAuMC4xMIGc
1390 MAsGCSqGSIb3DQEBAQOBjAAwgYgCgYBO0Hsx44Jk2VnAwoekXh6LczPHY1PfZpIG
1391 hPZk1Y/kNqcdK+izIDZFI7Xjla7t4PUgnI2V339aEu+H5Fto5OkOdOwEin/ekyfE
1392 ARl6vfLcPRSr0FTKIQzQTW6HLlzF0rtNS0/Otiz3fojsfNcCkXSmHgwa2uNKWi7e
1393 E5xMQIhZkwIDAQABozIwMDAOBgNVHQ8BAf8EBAMCAKAwDQYDVR0OBAYEBAECAwQw
1394 DwYDVR0jBAgwBoAEAQIDBDALBgkqhkiG9w0BAQUDgYEANh+zegx1yW43RmEr1b3A
1395 p0vMRpqBWHyFeSnIyMZn3TJWRSt1tukkqVCavh9a+hoV2cxVlXIWg7nCto/9iIw4
1396 hB2rXZIxE0/9gzvGnfERYraL7KtnvshksBFQRlgXa5kc0x38BvEO5ZaoDPl4ILdE
1397 GFGNEH5PlGffo05wc46QkYU=
1398 -----END CERTIFICATE-----`
1399
1400 func TestRSAMissingNULLParameters(t *testing.T) {
1401         block, _ := pem.Decode([]byte(certMissingRSANULL))
1402         if _, err := ParseCertificate(block.Bytes); err == nil {
1403                 t.Error("unexpected success when parsing certificate with missing RSA NULL parameter")
1404         } else if !strings.Contains(err.Error(), "missing NULL") {
1405                 t.Errorf("unrecognised error when parsing certificate with missing RSA NULL parameter: %s", err)
1406         }
1407 }
1408
1409 const certISOOID = `
1410 -----BEGIN CERTIFICATE-----
1411 MIIB5TCCAVKgAwIBAgIQtwyL3RPWV7dJQp34HwZG9DAJBgUrDgMCHQUAMBExDzAN
1412 BgNVBAMTBm15dGVzdDAeFw0xNjA4MDkyMjExMDVaFw0zOTEyMzEyMzU5NTlaMBEx
1413 DzANBgNVBAMTBm15dGVzdDCBnzANBgkqhkiG9w0BAQEFAAOBjQAwgYkCgYEArzIH
1414 GsyDB3ohIGkkvijF2PTRUX1bvOtY1eUUpjwHyu0twpAKSuaQv2Ha+/63+aHe8O86
1415 BT+98wjXFX6RFSagtAujo80rIF2dSm33BGt18pDN8v6zp93dnAm0jRaSQrHJ75xw
1416 5O+S1oEYR1LtUoFJy6qB104j6aINBAgOiLIKiMkCAwEAAaNGMEQwQgYDVR0BBDsw
1417 OYAQVuYVQ/WDjdGSkZRlTtJDNKETMBExDzANBgNVBAMTBm15dGVzdIIQtwyL3RPW
1418 V7dJQp34HwZG9DAJBgUrDgMCHQUAA4GBABngrSkH7vG5lY4sa4AZF59lAAXqBVJE
1419 J4TBiKC62hCdZv18rBleP6ETfhbPg7pTs8p4ebQbpmtNxRS9Lw3MzQ8Ya5Ybwzj2
1420 NwBSyCtCQl7mrEg4nJqJl4A2EUhnET/oVxU0oTV/SZ3ziGXcY1oG1s6vidV7TZTu
1421 MCRtdSdaM7g3
1422 -----END CERTIFICATE-----`
1423
1424 func TestISOOIDInCertificate(t *testing.T) {
1425         block, _ := pem.Decode([]byte(certISOOID))
1426         if cert, err := ParseCertificate(block.Bytes); err != nil {
1427                 t.Errorf("certificate with ISO OID failed to parse: %s", err)
1428         } else if cert.SignatureAlgorithm == UnknownSignatureAlgorithm {
1429                 t.Errorf("ISO OID not recognised in certificate")
1430         }
1431 }
1432
1433 // certMultipleRDN contains a RelativeDistinguishedName with two elements (the
1434 // common name and serial number). This particular certificate was the first
1435 // such certificate in the “Pilot” Certificate Transparency log.
1436 const certMultipleRDN = `
1437 -----BEGIN CERTIFICATE-----
1438 MIIFRzCCBC+gAwIBAgIEOl59NTANBgkqhkiG9w0BAQUFADA9MQswCQYDVQQGEwJz
1439 aTEbMBkGA1UEChMSc3RhdGUtaW5zdGl0dXRpb25zMREwDwYDVQQLEwhzaWdvdi1j
1440 YTAeFw0xMjExMTYxMDUyNTdaFw0xNzExMTYxMjQ5MDVaMIGLMQswCQYDVQQGEwJz
1441 aTEbMBkGA1UEChMSc3RhdGUtaW5zdGl0dXRpb25zMRkwFwYDVQQLExB3ZWItY2Vy
1442 dGlmaWNhdGVzMRAwDgYDVQQLEwdTZXJ2ZXJzMTIwFAYDVQQFEw0xMjM2NDg0MDEw
1443 MDEwMBoGA1UEAxMTZXBvcnRhbC5tc3MuZWR1cy5zaTCCASIwDQYJKoZIhvcNAQEB
1444 BQADggEPADCCAQoCggEBAMrNkZH9MPuBTjMGNk3sJX8V+CkFx/4ru7RTlLS6dlYM
1445 098dtSfJ3s2w0p/1NB9UmR8j0yS0Kg6yoZ3ShsSO4DWBtcQD8820a6BYwqxxQTNf
1446 HSRZOc+N/4TQrvmK6t4k9Aw+YEYTMrWOU4UTeyhDeCcUsBdh7HjfWsVaqNky+2sv
1447 oic3zP5gF+2QfPkvOoHT3FLR8olNhViIE6Kk3eFIEs4dkq/ZzlYdLb8pHQoj/sGI
1448 zFmA5AFvm1HURqOmJriFjBwaCtn8AVEYOtQrnUCzJYu1ex8azyS2ZgYMX0u8A5Z/
1449 y2aMS/B2W+H79WcgLpK28vPwe7vam0oFrVytAd+u65ECAwEAAaOCAf4wggH6MA4G
1450 A1UdDwEB/wQEAwIFoDBABgNVHSAEOTA3MDUGCisGAQQBr1kBAwMwJzAlBggrBgEF
1451 BQcCARYZaHR0cDovL3d3dy5jYS5nb3Yuc2kvY3BzLzAfBgNVHREEGDAWgRRwb2Rw
1452 b3JhLm1pemtzQGdvdi5zaTCB8QYDVR0fBIHpMIHmMFWgU6BRpE8wTTELMAkGA1UE
1453 BhMCc2kxGzAZBgNVBAoTEnN0YXRlLWluc3RpdHV0aW9uczERMA8GA1UECxMIc2ln
1454 b3YtY2ExDjAMBgNVBAMTBUNSTDM5MIGMoIGJoIGGhldsZGFwOi8veDUwMC5nb3Yu
1455 c2kvb3U9c2lnb3YtY2Esbz1zdGF0ZS1pbnN0aXR1dGlvbnMsYz1zaT9jZXJ0aWZp
1456 Y2F0ZVJldm9jYXRpb25MaXN0P2Jhc2WGK2h0dHA6Ly93d3cuc2lnb3YtY2EuZ292
1457 LnNpL2NybC9zaWdvdi1jYS5jcmwwKwYDVR0QBCQwIoAPMjAxMjExMTYxMDUyNTda
1458 gQ8yMDE3MTExNjEyNDkwNVowHwYDVR0jBBgwFoAUHvjUU2uzgwbpBAZXAvmlv8ZY
1459 PHIwHQYDVR0OBBYEFGI1Duuu+wTGDZka/xHNbwcbM69ZMAkGA1UdEwQCMAAwGQYJ
1460 KoZIhvZ9B0EABAwwChsEVjcuMQMCA6gwDQYJKoZIhvcNAQEFBQADggEBAHny0K1y
1461 BQznrzDu3DDpBcGYguKU0dvU9rqsV1ua4nxkriSMWjgsX6XJFDdDW60I3P4VWab5
1462 ag5fZzbGqi8kva/CzGgZh+CES0aWCPy+4Gb8lwOTt+854/laaJvd6kgKTER7z7U9
1463 9C86Ch2y4sXNwwwPJ1A9dmrZJZOcJjS/WYZgwaafY2Hdxub5jqPE5nehwYUPVu9R
1464 uH6/skk4OEKcfOtN0hCnISOVuKYyS4ANARWRG5VGHIH06z3lGUVARFRJ61gtAprd
1465 La+fgSS+LVZ+kU2TkeoWAKvGq8MAgDq4D4Xqwekg7WKFeuyusi/NI5rm40XgjBMF
1466 DF72IUofoVt7wo0=
1467 -----END CERTIFICATE-----`
1468
1469 func TestMultipleRDN(t *testing.T) {
1470         block, _ := pem.Decode([]byte(certMultipleRDN))
1471         cert, err := ParseCertificate(block.Bytes)
1472         if err != nil {
1473                 t.Fatalf("certificate with two elements in an RDN failed to parse: %v", err)
1474         }
1475
1476         if want := "eportal.mss.edus.si"; cert.Subject.CommonName != want {
1477                 t.Errorf("got common name of %q, but want %q", cert.Subject.CommonName, want)
1478         }
1479
1480         if want := "1236484010010"; cert.Subject.SerialNumber != want {
1481                 t.Errorf("got serial number of %q, but want %q", cert.Subject.SerialNumber, want)
1482         }
1483 }
1484
1485 func TestSystemCertPool(t *testing.T) {
1486         if runtime.GOOS == "windows" {
1487                 t.Skip("not implemented on Windows; Issue 16736, 18609")
1488         }
1489         _, err := SystemCertPool()
1490         if err != nil {
1491                 t.Fatal(err)
1492         }
1493 }