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// Copyright (c) 2013 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 NET_QUIC_CRYPTO_PROOF_VERIFIER_H_
#define NET_QUIC_CRYPTO_PROOF_VERIFIER_H_
#include <string>
#include <vector>
#include "net/base/completion_callback.h"
#include "net/base/net_export.h"
namespace net {
// ProofVerifyDetails is an abstract class that acts as a container for any
// implementation specific details that a ProofVerifier wishes to return. These
// details are saved in the CachedState for the origin in question.
class NET_EXPORT_PRIVATE ProofVerifyDetails {
public:
virtual ~ProofVerifyDetails() {}
};
// ProofVerifyContext is an abstract class that acts as a container for any
// implementation specific context that a ProofVerifier needs.
class NET_EXPORT_PRIVATE ProofVerifyContext {
public:
virtual ~ProofVerifyContext() {}
};
// ProofVerifierCallback provides a generic mechanism for a ProofVerifier to
// call back after an asynchronous verification.
class NET_EXPORT_PRIVATE ProofVerifierCallback {
public:
virtual ~ProofVerifierCallback();
// Run is called on the original thread to mark the completion of an
// asynchonous verification. If |ok| is true then the certificate is valid
// and |*error_details| is unused. Otherwise, |*error_details| contains a
// description of the error. |details| contains implementation-specific
// details of the verification. |Run| may take ownership of |details| by
// calling |release| on it.
virtual void Run(bool ok,
const std::string& error_details,
scoped_ptr<ProofVerifyDetails>* details) = 0;
};
// A ProofVerifier checks the signature on a server config, and the certificate
// chain that backs the public key.
class NET_EXPORT_PRIVATE ProofVerifier {
public:
// Status enumerates the possible results of verifying a proof.
enum Status {
SUCCESS = 0,
FAILURE = 1,
// PENDING results from a verification which will occur asynchonously. When
// the verification is complete, |callback|'s |Run| method will be called.
PENDING = 2,
};
virtual ~ProofVerifier();
// VerifyProof checks that |signature| is a valid signature of
// |server_config| by the public key in the leaf certificate of |certs|, and
// that |certs| is a valid chain for |hostname|. On success, it returns
// SUCCESS. On failure, it returns ERROR and sets |*error_details| to a
// description of the problem. In either case it may set |*details|, which the
// caller takes ownership of.
//
// |context| specifies an implementation specific struct (which may be NULL
// for some implementations) that provides useful information for the
// verifier, e.g. logging handles.
//
// This function may also return PENDING, in which case the ProofVerifier
// will call back, on the original thread, via |callback| when complete.
// In this case, the ProofVerifier will take ownership of |callback|.
//
// The signature uses SHA-256 as the hash function and PSS padding in the
// case of RSA.
virtual Status VerifyProof(const std::string& hostname,
const std::string& server_config,
const std::vector<std::string>& certs,
const std::string& signature,
const ProofVerifyContext* context,
std::string* error_details,
scoped_ptr<ProofVerifyDetails>* details,
ProofVerifierCallback* callback) = 0;
};
} // namespace net
#endif // NET_QUIC_CRYPTO_PROOF_VERIFIER_H_
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