CODEX_Ciphers::RSAPlaintextPK Class Reference

RSA proof of plaintext knowledge. More...

#include <RSAPlaintextPK.h>

Inheritance diagram for CODEX_Ciphers::RSAPlaintextPK:

[legend]Collaboration diagram for CODEX_Ciphers::RSAPlaintextPK:

[legend]List of all members.

Public Types
typedef CODEX_ASN1::Array< CODEX_ASN1::BigNumber >	ArrayType
	Shorthand for the arrays of proof values.
Public Member Functions
	RSAPlaintextPK ()
	Default constructor, for creating an object to be unmarshalled.
	RSAPlaintextPK (const CODEX_ASN1::SecureBigNumber &plaintext, const RSAPublicKey &publicKey, const CODEX_ASN1::Base &id, const HashFunction &hashFunc)
	RSAPlaintextPK (const RSAPlaintextPK &aPPK)
	Copy constructor.
virtual	~RSAPlaintextPK ()
	Virtual destructor.
void	operator= (const RSAPlaintextPK &aPPK)
	Assignment operator.
bool	verify (const RSACipherText &ciphertext, const RSAPublicKey &publicKey, const CODEX_ASN1::Base &id, const HashFunction &hashFunc) const
	Verify a proof.
int	marshal (unsigned char **pp) const
	This function creates a serialized representation of the object, which is returned through the argument pp.
void *	unmarshal (void *bogus, unsigned char **pp, long length)
	This function takes a serialized representation of the object and recreates the object representation.
bool	initialized () const
Protected Attributes
bool	m_initialized
	Has this object been initialized yet, or is it still blank?

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Detailed Description

RSA proof of plaintext knowledge.

This uses the identity proof of Ohta and Okamoto, which is similar to the Guillou-Quisquater identify proof (an extension of Fiat-Shamir).

See also:

Kazuo Ohta and Tatsuaki Okamoto. A Modification of the Fiat-Shamir Scheme. Advances in Cryptology---CRYPTO '88, Proceedings, LNCS 403:232--243, Springer-Verlag, 1990.

Definition at line 37 of file RSAPlaintextPK.h.

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Constructor & Destructor Documentation

RSAPlaintextPK::RSAPlaintextPK (  const CODEX_ASN1::SecureBigNumber &  plaintext, const RSAPublicKey &  publicKey, const CODEX_ASN1::Base &  id, const HashFunction &  hashFunc )

Parameters: plaintext  The plaintext of which knowledge is to be proven. publicKey  The public key under which the plaintext is being encrypted. id  A serializable object providing identifying information about the prover. hashFunc  A cryptographically secure hash function. Definition at line 30 of file RSAPlaintextPK.cc. References CODEX_ASN1::Array< T >::append(), CODEX_ASN1::BigNumber::marshal(), CODEX_ASN1::Array< T >::marshal(), and CODEX_ASN1::Array< T >::size().

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Member Function Documentation

bool CODEX_ASN1::Base::initialized (   )  const [inline, inherited]

Returns: Has this object been initialized? Definition at line 175 of file Base.h. References CODEX_ASN1::Base::m_initialized. Referenced by CODEX_APSS::SecretManagement::addComputeMsg(), CODEX_APSS::SecretManagement::addEstablishMsg(), CODEX_APSS::SecretManagement::addEstablishResponse(), CODEX_APSS::SecretManagement::addInitMsg(), CODEX_APSS::SecretManagement::addSharing(), CODEX_APSS::SecretManagement::addSubsharing(), CODEX_VSS::Combinatoric< NumT, ThreshT >::apply(), CODEX_Server::ServerState::caKey(), CODEX_KeyService::ClientCreateCallback::ClientCreateCallback(), CODEX_VSS::Combinatoric< NumT, ThreshT >::count(), CODEX_Server::QuorumBuilderAct::handler(), CODEX_APSS::MessageVerifier::handler(), CODEX_KeyService::DelegateResponseVerifier::handler(), CODEX_KeyService::DelegateRequestDistributor::handler(), CODEX_KeyService::ClientMessageVerifier::handler(), CODEX_KeyService::ClientMessageSigner::handler(), CODEX_VSS::SubshareLabel< LabelType >::marshal(), CODEX_KeyService::KeyInfo::marshal(), CODEX_VSS::LabeledShare< ShareType, OneWay >::marshal(), CODEX_VSS::ShareLabel< _ShareType, _OneWay >::marshal(), CODEX_VSS::ModExpFunctionalArgs::marshal(), CODEX_VSS::Combinatoric< NumT, ThreshT >::marshal(), CODEX_KeyService::SignWriteCallback::operator()(), CODEX_KeyService::SignReadCallback::operator()(), CODEX_KeyService::SignCreateCallback::operator()(), CODEX_VSS::ModExpFunctional::operator()(), CODEX_KeyService::ClientReadCallback::operator()(), CODEX_KeyService::ClientCreateCallback::operator()(), CODEX_VSS::Combinatoric< NumT, ThreshT >::operator+=(), CODEX_Server::ServerState::readElGamalShares(), CODEX_VSS::Combinatoric< NumT, ThreshT >::recover(), CODEX_APSS::SecretManagement::sendFinished(), CODEX_Server::ServerState::serviceKey(), CODEX_Server::ServerState::setEGShareCallback(), and CODEX_Server::ServerState::setRSAShareCallback().

int RSAPlaintextPK::marshal (  unsigned char **  pp  )  const [virtual]

This function creates a serialized representation of the object, which is returned through the argument pp. This must be overridden by the concrete derived class. Parameters: pp  Serialized form of the object Returns: Length of the marshalled data Implements CODEX_ASN1::Base. Definition at line 340 of file RSAPlaintextPK.cc. References CODEX_ASN1::Array< T >::marshal(). Referenced by CODEX_Client::WriteKeyMsg::marshal(), and CODEX_Client::ReadKeyMsg::marshal().

void * RSAPlaintextPK::unmarshal (  void *  bogus, unsigned char **  pp, long  length )  [virtual]

This function takes a serialized representation of the object and recreates the object representation. This must be overridden by the concrete derived class. Parameters: bogus  Included for compatibility with OpenSSL ASN.1 macros pp  Serialized form of the data length  Number of bytes of pp to unmarshal Returns: success or failure of the unmarshalling Implements CODEX_ASN1::Base. Definition at line 355 of file RSAPlaintextPK.cc. References CODEX_ASN1::Array< T >::unmarshal(). Referenced by CODEX_Client::WriteKeyMsg::unmarshal(), and CODEX_Client::ReadKeyMsg::unmarshal().

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The documentation for this class was generated from the following files:

• RSAPlaintextPK.h
• RSAPlaintextPK.cc

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