Interface for public-key encryptors. More...

#include <cryptlib.h>

Inheritance diagram for PK_Encryptor:

Collaboration diagram for PK_Encryptor:

Classes
class	InvalidPlaintextLength
	Exception thrown when trying to encrypt plaintext of invalid length. More...

Public Member Functions
virtual void	Encrypt (RandomNumberGenerator &rng, const byte plaintext, size_t plaintextLength, byte ciphertext, const NameValuePairs &parameters=g_nullNameValuePairs) const =0
	Encrypt a byte string. More...

virtual BufferedTransformation *	CreateEncryptionFilter (RandomNumberGenerator &rng, BufferedTransformation *attachment=NULL, const NameValuePairs &parameters=g_nullNameValuePairs) const
	Create a new encryption filter. More...

Public Member Functions inherited from PK_CryptoSystem
virtual	~PK_CryptoSystem ()

virtual size_t	MaxPlaintextLength (size_t ciphertextLength) const =0
	Provides the maximum length of plaintext for a given ciphertext length. More...

virtual size_t	CiphertextLength (size_t plaintextLength) const =0
	Calculate the length of ciphertext given length of plaintext. More...

virtual bool	ParameterSupported (const char *name) const =0
	Determines whether this object supports the use of a named parameter. More...

virtual size_t	FixedCiphertextLength () const
	Provides the fixed ciphertext length, if one exists. More...

virtual size_t	FixedMaxPlaintextLength () const
	Provides the maximum plaintext length given a fixed ciphertext length. More...

Public Member Functions inherited from PublicKeyAlgorithm
virtual	~PublicKeyAlgorithm ()

CryptoMaterial &	AccessMaterial ()
	Retrieves a reference to a Public Key. More...

const CryptoMaterial &	GetMaterial () const
	Retrieves a reference to a Public Key. More...

virtual PublicKey &	AccessPublicKey ()=0
	Retrieves a reference to a Public Key. More...

virtual const PublicKey &	GetPublicKey () const
	Retrieves a reference to a Public Key. More...

Public Member Functions inherited from AsymmetricAlgorithm
virtual	~AsymmetricAlgorithm ()

void	BERDecode (BufferedTransformation &bt)
	Loads this object from a BufferedTransformation. More...

void	DEREncode (BufferedTransformation &bt) const
	Saves this object to a BufferedTransformation. More...

Public Member Functions inherited from Algorithm
virtual	~Algorithm ()

	Algorithm (bool checkSelfTestStatus=true)
	Interface for all crypto algorithms. More...

virtual std::string	AlgorithmName () const
	Provides the name of this algorithm. More...

Public Member Functions inherited from Clonable
virtual	~Clonable ()

virtual Clonable *	Clone () const
	Copies this object. More...

Detailed Description

Interface for public-key encryptors.

Definition at line 2336 of file cryptlib.h.

Member Function Documentation

BufferedTransformation * PK_Encryptor::CreateEncryptionFilter	(	RandomNumberGenerator &	rng,
		BufferedTransformation *	attachment = `NULL`,
		const NameValuePairs &	parameters = `g_nullNameValuePairs`
	)		const

virtual

Create a new encryption filter.

Parameters

rng	a RandomNumberGenerator derived class
attachment	an attached transformation
parameters	a set of NameValuePairs to initialize this object

attachment can be NULL. The caller is responsible for deleting the returned pointer. Encoding parameters should be passed in the "EP" channel.

Definition at line 825 of file cryptlib.cpp.

virtual void PK_Encryptor::Encrypt	(	RandomNumberGenerator &	rng,
		const byte *	plaintext,
		size_t	plaintextLength,
		byte *	ciphertext,
		const NameValuePairs &	parameters = `g_nullNameValuePairs`
	)		const

pure virtual

Encrypt a byte string.

Parameters

rng	a RandomNumberGenerator derived class
plaintext	the plaintext byte buffer
plaintextLength	the size of the plaintext byte buffer
ciphertext	a byte buffer to hold the encrypted string
parameters	a set of NameValuePairs to initialize this object

Precondition: CiphertextLength(plaintextLength) != 0 ensures the plaintext isn't too large; COUNTOF(ciphertext) == CiphertextLength(plaintextLength) ensures the output byte buffer is large enough.

See also: PK_Decryptor

Implemented in DL_EncryptorBase< T >, DL_EncryptorBase< SCHEME_OPTIONS::Element >, and TF_EncryptorBase.

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

src/cryptopp/cryptlib.h
src/cryptopp/cryptlib.cpp

Classes

Public Member Functions

Detailed Description

Member Function Documentation