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/**
* Copyright (C) 2013 Regents of the University of California.
* @author: Jeff Thompson <jefft0@remap.ucla.edu>
* See COPYING for copyright and distribution information.
*/
#ifndef NDN_KEY_CHAIN_HPP
#define NDN_KEY_CHAIN_HPP
#include "../data.hpp"
#include "../face.hpp"
#include "identity/identity-manager.hpp"
namespace ndn {
/**
* An OnVerified function object is used to pass a callback to verifyData to report a successful verification.
*/
typedef func_lib::function<void(const ptr_lib::shared_ptr<Data>& data)> OnVerified;
/**
* An OnVerifyFailed function object is used to pass a callback to verifyData to report a failed verification.
*/
typedef func_lib::function<void()> OnVerifyFailed;
class KeyChain {
public:
KeyChain(ptr_lib::shared_ptr<IdentityManager> identityManager)
: identityManager_(identityManager), face_(0), maxSteps_(100)
{
}
/**
* Wire encode the Data object, sign it and set its signature.
* Note: the caller must make sure the timestamp is correct, for example with
* data.getMetaInfo().setTimestampMilliseconds(time(NULL) * 1000.0).
* @param data The Data object to be signed. This updates its signature and key locator field and wireEncoding.
* @param signerName The signing identity or certificate name, depending on byKeyName. If omitted, infer the certificate name from data.getName().
* @param byKeyName If true, the signerName is the key name, otherwise it is the certificate name. If omitted, the default is true.
* @param wireFormat A WireFormat object used to encode the input. If omitted, use WireFormat getDefaultWireFormat().
*/
void
signData(Data& data, const Name& signerName = Name(), bool byKeyName = true, WireFormat& wireFormat = *WireFormat::getDefaultWireFormat());
/**
* Check the signature on the Data object and call either onVerify or onVerifyFailed.
* We use callback functions because verify may fetch information to check the signature.
* @param data
* @param onVerified
* @param onVerifyFailed
*/
void
verifyData(const ptr_lib::shared_ptr<Data>& data, const OnVerified& onVerified, const OnVerifyFailed& onVerifyFailed);
/**
* Set the Face which will be used to fetch required certificates.
* @param face A pointer to the Face object.
*/
void
setFace(Face* face) { face_ = face; }
private:
ptr_lib::shared_ptr<IdentityManager> identityManager_;
Face* face_;
const int maxSteps_;
};
}
#endif