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1 // Copyright 2008-2009 Google Inc. | |
2 // | |
3 // Licensed under the Apache License, Version 2.0 (the "License"); | |
4 // you may not use this file except in compliance with the License. | |
5 // You may obtain a copy of the License at | |
6 // | |
7 // http://www.apache.org/licenses/LICENSE-2.0 | |
8 // | |
9 // Unless required by applicable law or agreed to in writing, software | |
10 // distributed under the License is distributed on an "AS IS" BASIS, | |
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
12 // See the License for the specific language governing permissions and | |
13 // limitations under the License. | |
14 // ======================================================================== | |
15 | |
16 | |
17 #ifndef OMAHA_NET_CUP_UTILS_H__ | |
18 #define OMAHA_NET_CUP_UTILS_H__ | |
19 | |
20 #include <atlstr.h> | |
21 #include <vector> | |
22 #include "base/basictypes.h" | |
23 | |
24 namespace omaha { | |
25 | |
26 namespace cup_utils { | |
27 | |
28 // Takes up to (rsa_key_size - SHA_DIGEST_SIZE) from the caller provided | |
29 // input, and creates a padded result (data | SHA1(data)), where the msb | |
30 // is keybits-160 and the lsb is 160 SHA1 bits. If less input is provided | |
31 // the function pads the input with zeros. | |
32 std::vector<uint8> RsaPad(size_t rsa_key_size, | |
33 const void* data, size_t data_length); | |
34 | |
35 // Encodes a buffer of bytes as B64. This encoder has a few differences from | |
36 // the standard: it uses a different char set that is http friendly and it does | |
37 // not pad the output with '='. | |
38 CStringA B64Encode(const void* data, size_t data_length); | |
39 | |
40 // Encodes a vector of bytes as web safe B64. | |
41 CStringA B64Encode(const std::vector<uint8>& data); | |
42 | |
43 // Computes the SHA hash of a vector of bytes: HASH(data). | |
44 std::vector<uint8> Hash(const std::vector<uint8>& data); | |
45 | |
46 // Computes the SHA hash of a CStringA: HASH(data). | |
47 std::vector<uint8> Hash(const CStringA& data); | |
48 | |
49 // Computes the SHA hash of buffers: HASH(HASH(buf1)|HASH(buf2)|HASH(buf3)). | |
50 std::vector<uint8> HashBuffers(const void* buf1, size_t len1, | |
51 const void* buf2, size_t len2, | |
52 const void* buf3, size_t len3); | |
53 | |
54 // Computes the HMAC of hashes: SYMSign[key](id|h1|h2|h3) | |
55 // NULL arguments are not included in the signature computation. | |
56 std::vector<uint8> SymSign(const std::vector<uint8>& key, | |
57 uint8 id, | |
58 const std::vector<uint8>* h1, | |
59 const std::vector<uint8>* h2, | |
60 const std::vector<uint8>* h3); | |
61 | |
62 // Parses out the c=xxx; from the cookie header. | |
63 CString ParseCupCookie(const CString& cookie_header); | |
64 | |
65 } // namespace cup_utils | |
66 | |
67 } // namespace omaha | |
68 | |
69 #endif // OMAHA_NET_CUP_UTILS_H__ | |
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