1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef NET_QUIC_CRYPTO_PROOF_SOURCE_H_ 6 #define NET_QUIC_CRYPTO_PROOF_SOURCE_H_ 7 8 #include <string> 9 #include <vector> 10 11 #include "net/base/net_export.h" 12 13 namespace net { 14 15 // ProofSource is an interface by which a QUIC server can obtain certificate 16 // chains and signatures that prove its identity. 17 class NET_EXPORT_PRIVATE ProofSource { 18 public: 19 virtual ~ProofSource() {} 20 21 // GetProof finds a certificate chain for |hostname|, sets |out_certs| to 22 // point to it (in leaf-first order), calculates a signature of 23 // |server_config| using that chain and puts the result in |out_signature|. 24 // 25 // The signature uses SHA-256 as the hash function and PSS padding when the 26 // key is RSA. 27 // 28 // The signature uses SHA-256 as the hash function when the key is ECDSA. 29 // 30 // If |ecdsa_ok| is true, the signature may use an ECDSA key. Otherwise, the 31 // signature must use an RSA key. 32 // 33 // |out_certs| is a pointer to a pointer, not a pointer to an array. 34 // 35 // The number of certificate chains is expected to be small and fixed thus 36 // the ProofSource retains ownership of the contents of |out_certs|. The 37 // expectation is that they will be cached forever. 38 // 39 // The signature values should be cached because |server_config| will be 40 // somewhat static. However, since they aren't bounded, the ProofSource may 41 // wish to evicit entries from that cache, thus the caller takes ownership of 42 // |*out_signature|. 43 // 44 // |hostname| may be empty to signify that a default certificate should be 45 // used. 46 // 47 // This function may be called concurrently. 48 virtual bool GetProof(const std::string& hostname, 49 const std::string& server_config, 50 bool ecdsa_ok, 51 const std::vector<std::string>** out_certs, 52 std::string* out_signature) = 0; 53 }; 54 55 } // namespace net 56 57 #endif // NET_QUIC_CRYPTO_PROOF_SOURCE_H_ 58
