prf_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 tls
     6  
     7  import (
     8  	"encoding/hex"
     9  	"testing"
    10  )
    11  
    12  type testSplitPreMasterSecretTest struct {
    13  	in, out1, out2 string
    14  }
    15  
    16  var testSplitPreMasterSecretTests = []testSplitPreMasterSecretTest{
    17  	{"", "", ""},
    18  	{"00", "00", "00"},
    19  	{"0011", "00", "11"},
    20  	{"001122", "0011", "1122"},
    21  	{"00112233", "0011", "2233"},
    22  }
    23  
    24  func TestSplitPreMasterSecret(t *testing.T) {
    25  	for i, test := range testSplitPreMasterSecretTests {
    26  		in, _ := hex.DecodeString(test.in)
    27  		out1, out2 := splitPreMasterSecret(in)
    28  		s1 := hex.EncodeToString(out1)
    29  		s2 := hex.EncodeToString(out2)
    30  		if s1 != test.out1 || s2 != test.out2 {
    31  			t.Errorf("#%d: got: (%s, %s) want: (%s, %s)", i, s1, s2, test.out1, test.out2)
    32  		}
    33  	}
    34  }
    35  
    36  type testKeysFromTest struct {
    37  	version                                        uint16
    38  	suite                                          *cipherSuite
    39  	preMasterSecret                                string
    40  	clientRandom, serverRandom                     string
    41  	masterSecret                                   string
    42  	clientMAC, serverMAC                           string
    43  	clientKey, serverKey                           string
    44  	macLen, keyLen                                 int
    45  	contextKeyingMaterial, noContextKeyingMaterial string
    46  }
    47  
    48  func TestKeysFromPreMasterSecret(t *testing.T) {
    49  	for i, test := range testKeysFromTests {
    50  		in, _ := hex.DecodeString(test.preMasterSecret)
    51  		clientRandom, _ := hex.DecodeString(test.clientRandom)
    52  		serverRandom, _ := hex.DecodeString(test.serverRandom)
    53  
    54  		masterSecret := masterFromPreMasterSecret(test.version, test.suite, in, clientRandom, serverRandom)
    55  		if s := hex.EncodeToString(masterSecret); s != test.masterSecret {
    56  			t.Errorf("#%d: bad master secret %s, want %s", i, s, test.masterSecret)
    57  			continue
    58  		}
    59  
    60  		clientMAC, serverMAC, clientKey, serverKey, _, _ := keysFromMasterSecret(test.version, test.suite, masterSecret, clientRandom, serverRandom, test.macLen, test.keyLen, 0)
    61  		clientMACString := hex.EncodeToString(clientMAC)
    62  		serverMACString := hex.EncodeToString(serverMAC)
    63  		clientKeyString := hex.EncodeToString(clientKey)
    64  		serverKeyString := hex.EncodeToString(serverKey)
    65  		if clientMACString != test.clientMAC ||
    66  			serverMACString != test.serverMAC ||
    67  			clientKeyString != test.clientKey ||
    68  			serverKeyString != test.serverKey {
    69  			t.Errorf("#%d: got: (%s, %s, %s, %s) want: (%s, %s, %s, %s)", i, clientMACString, serverMACString, clientKeyString, serverKeyString, test.clientMAC, test.serverMAC, test.clientKey, test.serverKey)
    70  		}
    71  
    72  		ekm := ekmFromMasterSecret(test.version, test.suite, masterSecret, clientRandom, serverRandom)
    73  		contextKeyingMaterial, err := ekm("label", []byte("context"), 32)
    74  		if err != nil {
    75  			t.Fatalf("ekmFromMasterSecret failed: %v", err)
    76  		}
    77  
    78  		noContextKeyingMaterial, err := ekm("label", nil, 32)
    79  		if err != nil {
    80  			t.Fatalf("ekmFromMasterSecret failed: %v", err)
    81  		}
    82  
    83  		if hex.EncodeToString(contextKeyingMaterial) != test.contextKeyingMaterial ||
    84  			hex.EncodeToString(noContextKeyingMaterial) != test.noContextKeyingMaterial {
    85  			t.Errorf("#%d: got keying material: (%s, %s) want: (%s, %s)", i, contextKeyingMaterial, noContextKeyingMaterial, test.contextKeyingMaterial, test.noContextKeyingMaterial)
    86  		}
    87  	}
    88  }
    89  
    90  // These test vectors were generated from GnuTLS using `gnutls-cli --insecure -d 9 `
    91  var testKeysFromTests = []testKeysFromTest{
    92  	{
    93  		VersionTLS10,
    94  		cipherSuiteByID(TLS_RSA_WITH_RC4_128_SHA),
    95  		"0302cac83ad4b1db3b9ab49ad05957de2a504a634a386fc600889321e1a971f57479466830ac3e6f468e87f5385fa0c5",
    96  		"4ae66303755184a3917fcb44880605fcc53baa01912b22ed94473fc69cebd558",
    97  		"4ae663020ec16e6bb5130be918cfcafd4d765979a3136a5d50c593446e4e44db",
    98  		"3d851bab6e5556e959a16bc36d66cfae32f672bfa9ecdef6096cbb1b23472df1da63dbbd9827606413221d149ed08ceb",
    99  		"805aaa19b3d2c0a0759a4b6c9959890e08480119",
   100  		"2d22f9fe519c075c16448305ceee209fc24ad109",
   101  		"d50b5771244f850cd8117a9ccafe2cf1",
   102  		"e076e33206b30507a85c32855acd0919",
   103  		20,
   104  		16,
   105  		"4d1bb6fc278c37d27aa6e2a13c2e079095d143272c2aa939da33d88c1c0cec22",
   106  		"93fba89599b6321ae538e27c6548ceb8b46821864318f5190d64a375e5d69d41",
   107  	},
   108  	{
   109  		VersionTLS10,
   110  		cipherSuiteByID(TLS_RSA_WITH_RC4_128_SHA),
   111  		"03023f7527316bc12cbcd69e4b9e8275d62c028f27e65c745cfcddc7ce01bd3570a111378b63848127f1c36e5f9e4890",
   112  		"4ae66364b5ea56b20ce4e25555aed2d7e67f42788dd03f3fee4adae0459ab106",
   113  		"4ae66363ab815cbf6a248b87d6b556184e945e9b97fbdf247858b0bdafacfa1c",
   114  		"7d64be7c80c59b740200b4b9c26d0baaa1c5ae56705acbcf2307fe62beb4728c19392c83f20483801cce022c77645460",
   115  		"97742ed60a0554ca13f04f97ee193177b971e3b0",
   116  		"37068751700400e03a8477a5c7eec0813ab9e0dc",
   117  		"207cddbc600d2a200abac6502053ee5c",
   118  		"df3f94f6e1eacc753b815fe16055cd43",
   119  		20,
   120  		16,
   121  		"2c9f8961a72b97cbe76553b5f954caf8294fc6360ef995ac1256fe9516d0ce7f",
   122  		"274f19c10291d188857ad8878e2119f5aa437d4da556601cf1337aff23154016",
   123  	},
   124  	{
   125  		VersionTLS10,
   126  		cipherSuiteByID(TLS_RSA_WITH_RC4_128_SHA),
   127  		"832d515f1d61eebb2be56ba0ef79879efb9b527504abb386fb4310ed5d0e3b1f220d3bb6b455033a2773e6d8bdf951d278a187482b400d45deb88a5d5a6bb7d6a7a1decc04eb9ef0642876cd4a82d374d3b6ff35f0351dc5d411104de431375355addc39bfb1f6329fb163b0bc298d658338930d07d313cd980a7e3d9196cac1",
   128  		"4ae663b2ee389c0de147c509d8f18f5052afc4aaf9699efe8cb05ece883d3a5e",
   129  		"4ae664d503fd4cff50cfc1fb8fc606580f87b0fcdac9554ba0e01d785bdf278e",
   130  		"1aff2e7a2c4279d0126f57a65a77a8d9d0087cf2733366699bec27eb53d5740705a8574bb1acc2abbe90e44f0dd28d6c",
   131  		"3c7647c93c1379a31a609542aa44e7f117a70085",
   132  		"0d73102994be74a575a3ead8532590ca32a526d4",
   133  		"ac7581b0b6c10d85bbd905ffbf36c65e",
   134  		"ff07edde49682b45466bd2e39464b306",
   135  		20,
   136  		16,
   137  		"678b0d43f607de35241dc7e9d1a7388a52c35033a1a0336d4d740060a6638fe2",
   138  		"f3b4ac743f015ef21d79978297a53da3e579ee047133f38c234d829c0f907dab",
   139  	},
   140  }
   141
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