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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 #include "content/child/webcrypto/webcrypto_util.h" | 5 #include "content/child/webcrypto/webcrypto_util.h" |
6 | 6 |
7 #include "base/base64.h" | 7 #include "base/base64.h" |
8 #include "base/logging.h" | 8 #include "base/logging.h" |
9 #include "base/strings/stringprintf.h" | 9 #include "base/strings/stringprintf.h" |
10 #include "content/child/webcrypto/status.h" | 10 #include "content/child/webcrypto/status.h" |
11 #include "third_party/WebKit/public/platform/WebCryptoAlgorithm.h" | 11 #include "third_party/WebKit/public/platform/WebCryptoAlgorithm.h" |
12 #include "third_party/WebKit/public/platform/WebCryptoAlgorithmParams.h" | 12 #include "third_party/WebKit/public/platform/WebCryptoAlgorithmParams.h" |
13 #include "third_party/WebKit/public/platform/WebCryptoKeyAlgorithm.h" | 13 #include "third_party/WebKit/public/platform/WebCryptoKeyAlgorithm.h" |
14 | 14 |
15 namespace content { | 15 namespace content { |
16 | 16 |
17 namespace webcrypto { | 17 namespace webcrypto { |
18 | 18 |
19 const uint8* Uint8VectorStart(const std::vector<uint8>& data) { | 19 const uint8_t* Uint8VectorStart(const std::vector<uint8_t>& data) { |
20 if (data.empty()) | 20 if (data.empty()) |
21 return NULL; | 21 return NULL; |
22 return &data[0]; | 22 return &data[0]; |
23 } | 23 } |
24 | 24 |
25 uint8* Uint8VectorStart(std::vector<uint8>* data) { | 25 uint8_t* Uint8VectorStart(std::vector<uint8_t>* data) { |
26 if (data->empty()) | 26 if (data->empty()) |
27 return NULL; | 27 return NULL; |
28 return &(*data)[0]; | 28 return &(*data)[0]; |
29 } | 29 } |
30 | 30 |
31 // This function decodes unpadded 'base64url' encoded data, as described in | 31 // This function decodes unpadded 'base64url' encoded data, as described in |
32 // RFC4648 (http://www.ietf.org/rfc/rfc4648.txt) Section 5. To do this, first | 32 // RFC4648 (http://www.ietf.org/rfc/rfc4648.txt) Section 5. To do this, first |
33 // change the incoming data to 'base64' encoding by applying the appropriate | 33 // change the incoming data to 'base64' encoding by applying the appropriate |
34 // transformation including adding padding if required, and then call a base64 | 34 // transformation including adding padding if required, and then call a base64 |
35 // decoder. | 35 // decoder. |
36 bool Base64DecodeUrlSafe(const std::string& input, std::string* output) { | 36 bool Base64DecodeUrlSafe(const std::string& input, std::string* output) { |
37 std::string base64EncodedText(input); | 37 std::string base64EncodedText(input); |
38 std::replace(base64EncodedText.begin(), base64EncodedText.end(), '-', '+'); | 38 std::replace(base64EncodedText.begin(), base64EncodedText.end(), '-', '+'); |
39 std::replace(base64EncodedText.begin(), base64EncodedText.end(), '_', '/'); | 39 std::replace(base64EncodedText.begin(), base64EncodedText.end(), '_', '/'); |
40 base64EncodedText.append((4 - base64EncodedText.size() % 4) % 4, '='); | 40 base64EncodedText.append((4 - base64EncodedText.size() % 4) % 4, '='); |
41 return base::Base64Decode(base64EncodedText, output); | 41 return base::Base64Decode(base64EncodedText, output); |
42 } | 42 } |
43 | 43 |
44 // Returns an unpadded 'base64url' encoding of the input data, using the | 44 // Returns an unpadded 'base64url' encoding of the input data, using the |
45 // inverse of the process above. | 45 // inverse of the process above. |
46 std::string Base64EncodeUrlSafe(const base::StringPiece& input) { | 46 std::string Base64EncodeUrlSafe(const base::StringPiece& input) { |
47 std::string output; | 47 std::string output; |
48 base::Base64Encode(input, &output); | 48 base::Base64Encode(input, &output); |
49 std::replace(output.begin(), output.end(), '+', '-'); | 49 std::replace(output.begin(), output.end(), '+', '-'); |
50 std::replace(output.begin(), output.end(), '/', '_'); | 50 std::replace(output.begin(), output.end(), '/', '_'); |
51 output.erase(std::remove(output.begin(), output.end(), '='), output.end()); | 51 output.erase(std::remove(output.begin(), output.end(), '='), output.end()); |
52 return output; | 52 return output; |
53 } | 53 } |
54 | 54 |
55 std::string Base64EncodeUrlSafe(const std::vector<uint8>& input) { | 55 std::string Base64EncodeUrlSafe(const std::vector<uint8_t>& input) { |
56 const base::StringPiece string_piece( | 56 const base::StringPiece string_piece( |
57 reinterpret_cast<const char*>(Uint8VectorStart(input)), input.size()); | 57 reinterpret_cast<const char*>(Uint8VectorStart(input)), input.size()); |
58 return Base64EncodeUrlSafe(string_piece); | 58 return Base64EncodeUrlSafe(string_piece); |
59 } | 59 } |
60 | 60 |
61 struct JwkToWebCryptoUsage { | 61 struct JwkToWebCryptoUsage { |
62 const char* const jwk_key_op; | 62 const char* const jwk_key_op; |
63 const blink::WebCryptoKeyUsage webcrypto_usage; | 63 const blink::WebCryptoKeyUsage webcrypto_usage; |
64 }; | 64 }; |
65 | 65 |
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256 Status CheckKeyCreationUsages(blink::WebCryptoKeyUsageMask all_possible_usages, | 256 Status CheckKeyCreationUsages(blink::WebCryptoKeyUsageMask all_possible_usages, |
257 blink::WebCryptoKeyUsageMask actual_usages) { | 257 blink::WebCryptoKeyUsageMask actual_usages) { |
258 if (!ContainsKeyUsages(all_possible_usages, actual_usages)) | 258 if (!ContainsKeyUsages(all_possible_usages, actual_usages)) |
259 return Status::ErrorCreateKeyBadUsages(); | 259 return Status::ErrorCreateKeyBadUsages(); |
260 return Status::Success(); | 260 return Status::Success(); |
261 } | 261 } |
262 | 262 |
263 } // namespace webcrypto | 263 } // namespace webcrypto |
264 | 264 |
265 } // namespace content | 265 } // namespace content |
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