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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef CHROME_BROWSER_NET_PACKED_CT_EV_WHITELIST_H_ | 5 #ifndef CHROME_BROWSER_NET_PACKED_CT_EV_WHITELIST_H_ |
6 #define CHROME_BROWSER_NET_PACKED_CT_EV_WHITELIST_H_ | 6 #define CHROME_BROWSER_NET_PACKED_CT_EV_WHITELIST_H_ |
7 | 7 |
8 #include <stdint.h> | 8 #include <stdint.h> |
9 | 9 |
10 #include <string> | 10 #include <string> |
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23 // * First 8 bytes: First hash | 23 // * First 8 bytes: First hash |
24 // * Repeating Golomb-coded number which is the numeric difference of the | 24 // * Repeating Golomb-coded number which is the numeric difference of the |
25 // previous hash value from this one | 25 // previous hash value from this one |
26 // | 26 // |
27 // The resulting, unpacked list is a sorted list of hash values that can be | 27 // The resulting, unpacked list is a sorted list of hash values that can be |
28 // efficiently searched. | 28 // efficiently searched. |
29 class PackedEVCertsWhitelist : public net::ct::EVCertsWhitelist { | 29 class PackedEVCertsWhitelist : public net::ct::EVCertsWhitelist { |
30 public: | 30 public: |
31 // Unpacks the given |compressed_whitelist|. See the class documentation | 31 // Unpacks the given |compressed_whitelist|. See the class documentation |
32 // for description of the |compressed_whitelist| format. | 32 // for description of the |compressed_whitelist| format. |
33 explicit PackedEVCertsWhitelist(const std::string& compressed_whitelist); | 33 PackedEVCertsWhitelist(const std::string& compressed_whitelist, |
| 34 const base::Version& version); |
34 | 35 |
35 // Returns true if the |certificate_hash| appears in the EV certificate hashes | 36 // Returns true if the |certificate_hash| appears in the EV certificate hashes |
36 // whitelist. Must not be called if IsValid for this instance returned false. | 37 // whitelist. Must not be called if IsValid for this instance returned false. |
37 bool ContainsCertificateHash( | 38 bool ContainsCertificateHash( |
38 const std::string& certificate_hash) const override; | 39 const std::string& certificate_hash) const override; |
39 | 40 |
40 // Returns true if the EV certificate hashes whitelist provided in the c'tor | 41 // Returns true if the EV certificate hashes whitelist provided in the c'tor |
41 // was valid, false otherwise. | 42 // was valid, false otherwise. |
42 bool IsValid() const override; | 43 bool IsValid() const override; |
43 | 44 |
| 45 // Returns the version of the whitelist in use, if available. |
| 46 base::Version Version() const override; |
| 47 |
44 protected: | 48 protected: |
45 ~PackedEVCertsWhitelist() override; | 49 ~PackedEVCertsWhitelist() override; |
46 | 50 |
47 private: | 51 private: |
48 FRIEND_TEST_ALL_PREFIXES(PackedEVCertsWhitelistTest, | 52 FRIEND_TEST_ALL_PREFIXES(PackedEVCertsWhitelistTest, |
49 UncompressFailsForTooShortList); | 53 UncompressFailsForTooShortList); |
50 FRIEND_TEST_ALL_PREFIXES(PackedEVCertsWhitelistTest, | 54 FRIEND_TEST_ALL_PREFIXES(PackedEVCertsWhitelistTest, |
51 UncompressFailsForTruncatedList); | 55 UncompressFailsForTruncatedList); |
52 FRIEND_TEST_ALL_PREFIXES(PackedEVCertsWhitelistTest, | 56 FRIEND_TEST_ALL_PREFIXES(PackedEVCertsWhitelistTest, |
53 UncompressFailsForInvalidValuesInList); | 57 UncompressFailsForInvalidValuesInList); |
54 FRIEND_TEST_ALL_PREFIXES(PackedEVCertsWhitelistTest, | 58 FRIEND_TEST_ALL_PREFIXES(PackedEVCertsWhitelistTest, |
55 UncompressesWhitelistCorrectly); | 59 UncompressesWhitelistCorrectly); |
56 | 60 |
57 // Given a Golomb-coded list of hashes in |compressed_whitelist|, unpack into | 61 // Given a Golomb-coded list of hashes in |compressed_whitelist|, unpack into |
58 // |uncompressed_list|. Returns true if the format of the compressed whitelist | 62 // |uncompressed_list|. Returns true if the format of the compressed whitelist |
59 // is valid, false otherwise. | 63 // is valid, false otherwise. |
60 static bool UncompressEVWhitelist(const std::string& compressed_whitelist, | 64 static bool UncompressEVWhitelist(const std::string& compressed_whitelist, |
61 std::vector<uint64_t>* uncompressed_list); | 65 std::vector<uint64_t>* uncompressed_list); |
62 | 66 |
63 // The whitelist is an array containing certificate hashes (truncated | 67 // The whitelist is an array containing certificate hashes (truncated |
64 // to a fixed size of 8 bytes), sorted. | 68 // to a fixed size of 8 bytes), sorted. |
65 // Binary search is used to locate hashes in the the array. | 69 // Binary search is used to locate hashes in the the array. |
66 // Benchmarking bsearch vs std::set (with 120K entries, doing 1.2M lookups) | 70 // Benchmarking bsearch vs std::set (with 120K entries, doing 1.2M lookups) |
67 // shows that bsearch is about twice as fast as std::set lookups (and std::set | 71 // shows that bsearch is about twice as fast as std::set lookups (and std::set |
68 // has additional memory overhead). | 72 // has additional memory overhead). |
69 std::vector<uint64_t> whitelist_; | 73 std::vector<uint64_t> whitelist_; |
| 74 base::Version version_; |
70 | 75 |
71 DISALLOW_COPY_AND_ASSIGN(PackedEVCertsWhitelist); | 76 DISALLOW_COPY_AND_ASSIGN(PackedEVCertsWhitelist); |
72 }; | 77 }; |
73 | 78 |
74 // Sets the EV certificate hashes whitelist in the SSLConfigService | 79 // Sets the EV certificate hashes whitelist in the SSLConfigService |
75 // to the provided |whitelist|, if valid. Otherwise, does nothing. | 80 // to the provided |whitelist|, if valid. Otherwise, does nothing. |
76 // To set the new whitelist, this function dispatches a task to the IO thread. | 81 // To set the new whitelist, this function dispatches a task to the IO thread. |
77 void SetEVCertsWhitelist(scoped_refptr<net::ct::EVCertsWhitelist> whitelist); | 82 void SetEVCertsWhitelist(scoped_refptr<net::ct::EVCertsWhitelist> whitelist); |
78 | 83 |
79 #endif // CHROME_BROWSER_NET_PACKED_CT_EV_WHITELIST_H_ | 84 #endif // CHROME_BROWSER_NET_PACKED_CT_EV_WHITELIST_H_ |
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