The back-end implementation of file-based TPM. More...

#include <back-end-file.hpp>

Inheritance diagram for ndn::security::tpm::BackEndFile:

Collaboration diagram for ndn::security::tpm::BackEndFile:

Classes
class	Error

Public Member Functions
	BackEndFile (const std::string &location="")
	Create file-based TPM backend. More...

	~BackEndFile () override

unique_ptr< KeyHandle >	createKey (const Name &identity, const KeyParams &params)
	Create key for `identity` according to `params`. More...

void	deleteKey (const Name &keyName)
	Delete a key with name `keyName`. More...

ConstBufferPtr	exportKey (const Name &keyName, const char *pw, size_t pwLen)

unique_ptr< KeyHandle >	getKeyHandle (const Name &keyName) const

bool	hasKey (const Name &keyName) const

void	importKey (const Name &keyName, const uint8_t pkcs8, size_t pkcs8Len, const char pw, size_t pwLen)
	Import a private key in encrypted PKCS #8 format. More...

virtual bool	isTerminalMode () const
	Check if TPM is in terminal mode. More...

virtual bool	isTpmLocked () const

virtual void	setTerminalMode (bool isTerminal) const
	Set the terminal mode of TPM. More...

virtual bool	unlockTpm (const char *pw, size_t pwLen) const
	Unlock TPM. More...

Static Public Member Functions
static const std::string &	getScheme ()

Static Protected Member Functions
static void	setKeyName (KeyHandle &keyHandle, const Name &identity, const KeyParams &params)
	Set the key name in `keyHandle` according to `identity` and `params`. More...

Detailed Description

The back-end implementation of file-based TPM.

In this TPM, each private key is stored in a separate file with permission 0400, i.e., owner read-only. The key is stored in PKCS #1 format in base64 encoding.

Definition at line 41 of file back-end-file.hpp.

Constructor & Destructor Documentation

ndn::security::tpm::BackEndFile::BackEndFile ( const std::string & location = "" )

explicit

Create file-based TPM backend.

Parameters

location Directory to store private keys

Definition at line 79 of file back-end-file.cpp.

ndn::security::tpm::BackEndFile::~BackEndFile ( )

overridedefault

Member Function Documentation

unique_ptr< KeyHandle > ndn::security::tpm::BackEnd::createKey	(	const Name &	identity,
		const KeyParams &	params
	)

inherited

Create key for identity according to params.

The key name is set in the returned KeyHandle.

Returns: The handle of the created key.

Exceptions

Tpm::Error	`params` are invalid
Error	the key cannot be created

Definition at line 51 of file back-end.cpp.

void ndn::security::tpm::BackEnd::deleteKey ( const Name & keyName )

inherited

Delete a key with name keyName.

Continuing to use existing KeyHandles on a deleted key results in undefined behavior.

Exceptions

Error if the deletion fails.

Definition at line 86 of file back-end.cpp.

ConstBufferPtr ndn::security::tpm::BackEnd::exportKey	(	const Name &	keyName,
		const char *	pw,
		size_t	pwLen
	)

inherited

Returns: A private key with name keyName in encrypted PKCS #8 format using password pw

Exceptions

Error	the key does not exist
Error	the key cannot be exported, e.g., insufficient privilege

Definition at line 92 of file back-end.cpp.

unique_ptr< KeyHandle > ndn::security::tpm::BackEnd::getKeyHandle ( const Name & keyName ) const

inherited

Returns: The handle of a key with name keyName, or nullptr if the key does not exist.

Calling getKeyHandle multiple times with the same keyName will return different KeyHandle objects that all refer to the same key.

Definition at line 45 of file back-end.cpp.

const std::string & ndn::security::tpm::BackEndFile::getScheme ( )

static

Definition at line 87 of file back-end-file.cpp.

bool ndn::security::tpm::BackEnd::hasKey ( const Name & keyName ) const

inherited

Returns: True if a key with name keyName exists in TPM.

Definition at line 39 of file back-end.cpp.

void ndn::security::tpm::BackEnd::importKey	(	const Name &	keyName,
		const uint8_t *	pkcs8,
		size_t	pkcs8Len,
		const char *	pw,
		size_t	pwLen
	)

inherited

Import a private key in encrypted PKCS #8 format.

Parameters

keyName	The name of imported private key
pkcs8	Pointer to the key in encrypted PKCS #8 format
pkcs8Len	The size of the key in encrypted PKCS #8 format
pw	The password to decrypt the private key
pwLen	The length of the password

Exceptions

Error import failed

Definition at line 101 of file back-end.cpp.

bool ndn::security::tpm::BackEnd::isTerminalMode ( ) const

virtualinherited

Check if TPM is in terminal mode.

Default implementation always returns true.

Reimplemented in ndn::security::tpm::BackEndOsx.

Definition at line 142 of file back-end.cpp.

bool ndn::security::tpm::BackEnd::isTpmLocked ( ) const

virtualinherited

Returns: True if TPM is locked, otherwise false

Default implementation always returns false.

Reimplemented in ndn::security::tpm::BackEndOsx.

Definition at line 153 of file back-end.cpp.

void ndn::security::tpm::BackEnd::setKeyName	(	KeyHandle &	keyHandle,
		const Name &	identity,
		const KeyParams &	params
	)

staticprotectedinherited

Set the key name in keyHandle according to identity and params.

Definition at line 110 of file back-end.cpp.

void ndn::security::tpm::BackEnd::setTerminalMode ( bool isTerminal ) const

virtualinherited

Set the terminal mode of TPM.

In terminal mode, TPM will not ask user permission from GUI.

Default implementation does nothing.

Reimplemented in ndn::security::tpm::BackEndOsx.

Definition at line 148 of file back-end.cpp.

bool ndn::security::tpm::BackEnd::unlockTpm	(	const char *	pw,
		size_t	pwLen
	)		const

virtualinherited

Unlock TPM.

Parameters

pw	The password to unlock TPM
pwLen	The password size.

Default implementation always returns !isTpmLocked()

Reimplemented in ndn::security::tpm::BackEndOsx.

Definition at line 159 of file back-end.cpp.

ndn-cxx: NDN C++ library with eXperimental eXtensions 0.6.0 documentation

Classes

Public Member Functions

Static Public Member Functions

Static Protected Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation