| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CONTENT_CHILD_WEBCRYPTO_WEBCRYPTO_UTIL_H_ |
| #define CONTENT_CHILD_WEBCRYPTO_WEBCRYPTO_UTIL_H_ |
| |
| #include <string> |
| #include <vector> |
| #include "base/basictypes.h" |
| #include "base/strings/string_piece.h" |
| #include "base/values.h" |
| #include "content/common/content_export.h" |
| #include "third_party/WebKit/public/platform/WebCryptoAlgorithm.h" |
| #include "third_party/WebKit/public/platform/WebCryptoKey.h" |
| |
| namespace content { |
| |
| namespace webcrypto { |
| |
| class Status; |
| |
| // Returns a pointer to the start of |data|, or NULL if it is empty. This is a |
| // convenience function for getting the pointer, and should not be used beyond |
| // the expected lifetime of |data|. |
| CONTENT_EXPORT const uint8* Uint8VectorStart(const std::vector<uint8>& data); |
| CONTENT_EXPORT uint8* Uint8VectorStart(std::vector<uint8>* data); |
| |
| // This function decodes unpadded 'base64url' encoded data, as described in |
| // RFC4648 (http://www.ietf.org/rfc/rfc4648.txt) Section 5. |
| // In Web Crypto, this type of encoding is only used inside JWK. |
| CONTENT_EXPORT bool Base64DecodeUrlSafe(const std::string& input, |
| std::string* output); |
| |
| // Returns an unpadded 'base64url' encoding of the input data, the opposite of |
| // Base64DecodeUrlSafe() above. |
| CONTENT_EXPORT std::string Base64EncodeUrlSafe(const base::StringPiece& input); |
| CONTENT_EXPORT std::string Base64EncodeUrlSafe(const std::vector<uint8>& input); |
| |
| // Composes a Web Crypto usage mask from an array of JWK key_ops values. |
| CONTENT_EXPORT Status GetWebCryptoUsagesFromJwkKeyOps( |
| const base::ListValue* jwk_key_ops_value, |
| blink::WebCryptoKeyUsageMask* jwk_key_ops_mask); |
| |
| // Composes a JWK key_ops array from a Web Crypto usage mask. |
| base::ListValue* CreateJwkKeyOpsFromWebCryptoUsages( |
| blink::WebCryptoKeyUsageMask usage_mask); |
| |
| // Returns the "hash" param for an algorithm if it exists, otherwise returns |
| // a null algorithm. |
| blink::WebCryptoAlgorithm GetInnerHashAlgorithm( |
| const blink::WebCryptoAlgorithm& algorithm); |
| |
| // Creates a WebCryptoAlgorithm without any parameters. |
| CONTENT_EXPORT blink::WebCryptoAlgorithm CreateAlgorithm( |
| blink::WebCryptoAlgorithmId id); |
| |
| // Creates an HMAC import algorithm whose inner hash algorithm is determined by |
| // the specified algorithm ID. It is an error to call this method with a hash |
| // algorithm that is not SHA*. |
| CONTENT_EXPORT blink::WebCryptoAlgorithm CreateHmacImportAlgorithm( |
| blink::WebCryptoAlgorithmId hash_id); |
| |
| // Creates an import algorithm for RSA algorithms that take a hash. |
| // It is an error to call this with a hash_id that is not a SHA*. |
| CONTENT_EXPORT blink::WebCryptoAlgorithm CreateRsaHashedImportAlgorithm( |
| blink::WebCryptoAlgorithmId id, |
| blink::WebCryptoAlgorithmId hash_id); |
| |
| bool CreateSecretKeyAlgorithm(const blink::WebCryptoAlgorithm& algorithm, |
| unsigned int keylen_bytes, |
| blink::WebCryptoKeyAlgorithm* key_algorithm); |
| |
| // Returns true if the set bits in b make up a subset of the set bits in a. |
| bool ContainsKeyUsages(blink::WebCryptoKeyUsageMask a, |
| blink::WebCryptoKeyUsageMask b); |
| |
| bool IsAlgorithmRsa(blink::WebCryptoAlgorithmId alg_id); |
| bool IsAlgorithmAsymmetric(blink::WebCryptoAlgorithmId alg_id); |
| |
| } // namespace webcrypto |
| |
| } // namespace content |
| |
| #endif // CONTENT_CHILD_WEBCRYPTO_WEBCRYPTO_UTIL_H_ |