Abstract base classes that provide a uniform interface to this library. More...

Classes
struct	EnumToType< ENUM_TYPE, VALUE >
	Converts an enumeration to a type suitable for use as a template parameter. More...

class	Exception
	Base class for all exceptions thrown by the library. More...

class	InvalidArgument
	An invalid argument was detected. More...

class	InvalidDataFormat
	Input data was received that did not conform to expected format. More...

class	InvalidCiphertext
	A decryption filter encountered invalid ciphertext. More...

class	NotImplemented
	A method was called which was not implemented. More...

class	CannotFlush
	Flush(true) was called but it can't completely flush its buffers. More...

class	OS_Error
	The operating system reported an error. More...

struct	DecodingResult
	Returns a decoding results. More...

class	NameValuePairs
	Interface for retrieving values given their names. More...

class	NameValuePairs::ValueTypeMismatch
	Thrown when an unexpected type is encountered. More...

class	Clonable
	Interface for cloning objects. More...

class	Algorithm
	Interface for all crypto algorithms. More...

class	SimpleKeyingInterface
	Interface for algorithms that take byte strings as keys. More...

class	BlockTransformation
	Interface for the data processing part of block ciphers. More...

class	StreamTransformation
	Interface for the data processing portion of stream ciphers. More...

class	HashTransformation
	Interface for hash functions and data processing part of MACs. More...

class	BlockCipher
	Interface for one direction (encryption or decryption) of a block cipher. More...

class	SymmetricCipher
	Interface for one direction (encryption or decryption) of a stream cipher or cipher mode. More...

class	MessageAuthenticationCode
	Interface for message authentication codes. More...

class	AuthenticatedSymmetricCipher
	Interface for authenticated encryption modes of operation. More...

class	AuthenticatedSymmetricCipher::BadState
	Exception thrown when the object is in the wrong state for the operation. More...

class	RandomNumberGenerator
	Interface for random number generators. More...

class	KeyDerivationFunction
	Interface for key derivation functions. More...

struct	PasswordBasedKeyDerivationFunction
	Interface for password based key derivation functions. More...

class	Waitable
	Interface for objects that can be waited on. More...

class	BufferedTransformation
	Interface for buffered transformations. More...

struct	BufferedTransformation::BlockingInputOnly
	Exception thrown by objects that have not implemented nonblocking input processing. More...

struct	BufferedTransformation::NoChannelSupport
	Exception thrown when a filter does not support named channels. More...

struct	BufferedTransformation::InvalidChannelName
	Exception thrown when a filter does not recognize a named channel. More...

class	CryptoMaterial
	Interface for crypto material. More...

class	CryptoMaterial::InvalidMaterial
	Exception thrown when invalid crypto material is detected. More...

class	GeneratableCryptoMaterial
	Interface for crypto material. More...

class	PublicKey
	Interface for public keys. More...

class	PrivateKey
	Interface for private keys. More...

class	CryptoParameters
	Interface for crypto parameters. More...

class	Certificate
	Interface for certificates. More...

class	AsymmetricAlgorithm
	Interface for asymmetric algorithms. More...

class	PublicKeyAlgorithm
	Interface for asymmetric algorithms using public keys. More...

class	PrivateKeyAlgorithm
	Interface for asymmetric algorithms using private keys. More...

class	KeyAgreementAlgorithm
	Interface for key agreement algorithms. More...

class	PK_CryptoSystem
	Interface for public-key encryptors and decryptors. More...

class	PK_Encryptor
	Interface for public-key encryptors. More...

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

class	PK_Decryptor
	Interface for public-key decryptors. More...

class	PK_SignatureScheme
	Interface for public-key signers and verifiers. More...

class	PK_SignatureScheme::InvalidKeyLength
	Exception throw when the private or public key has a length that can't be used. More...

class	PK_SignatureScheme::KeyTooShort
	Exception throw when the private or public key is too short to sign or verify. More...

class	PK_MessageAccumulator
	Interface for accumulating messages to be signed or verified. More...

class	PK_Signer
	Interface for public-key signers. More...

class	PK_Verifier
	Interface for public-key signature verifiers. More...

class	SimpleKeyAgreementDomain
	Interface for domains of simple key agreement protocols. More...

class	AuthenticatedKeyAgreementDomain
	Interface for domains of authenticated key agreement protocols. More...

class	BERDecodeErr
	Exception thrown when an ASN.1 BER decoing error is encountered. More...

class	ASN1Object
	Interface for encoding and decoding ASN1 objects. More...

Namespaces
namespace	Name
	Namespace containing value name definitions.

namespace	Weak
	Namespace containing weak and wounded algorithms.

namespace	NaCl
	Namespace containing NaCl library functions.

namespace	Test
	Namespace containing testing and benchmark classes.

Typedefs
typedef EnumToType< ByteOrder, LITTLE_ENDIAN_ORDER >	LittleEndian
	Provides a constant for LittleEndian. More...

typedef EnumToType< ByteOrder, BIG_ENDIAN_ORDER >	BigEndian
	Provides a constant for BigEndian. More...

Enumerations
enum	CipherDir { ENCRYPTION , DECRYPTION }
	Specifies a direction for a cipher to operate. More...

enum	ByteOrder { LITTLE_ENDIAN_ORDER = 0 , BIG_ENDIAN_ORDER = 1 }
	Provides the byte ordering. More...

Functions
CRYPTOPP_DLL RandomNumberGenerator &	NullRNG ()
	Random Number Generator that does not produce random numbers. More...

CRYPTOPP_DLL BufferedTransformation &	TheBitBucket ()
	An input discarding BufferedTransformation. More...

int	LibraryVersion (...)
	Specifies the build-time version of the library. More...

int	HeaderVersion ()
	Specifies the runtime version of the library. More...

Variables
const unsigned long	INFINITE_TIME = ULONG_MAX
	Represents infinite time. More...

const std::string	DEFAULT_CHANNEL
	Default channel for BufferedTransformation. More...

const std::string	AAD_CHANNEL
	Channel for additional authenticated data. More...

const NameValuePairs &	g_nullNameValuePairs
	An empty set of name-value pairs. More...

Detailed Description

Abstract base classes that provide a uniform interface to this library.

Definition in file cryptlib.h.

Typedef Documentation

◆ LittleEndian

typedef EnumToType<ByteOrder, LITTLE_ENDIAN_ORDER> LittleEndian

Provides a constant for LittleEndian.

Definition at line 150 of file cryptlib.h.

◆ BigEndian

typedef EnumToType<ByteOrder, BIG_ENDIAN_ORDER> BigEndian

Provides a constant for BigEndian.

Definition at line 152 of file cryptlib.h.

Enumeration Type Documentation

◆ CipherDir

enum CipherDir

Specifies a direction for a cipher to operate.

See also: BlockTransformation::IsForwardTransformation(), BlockTransformation::IsPermutation(), BlockTransformation::GetCipherDirection()

Enumerator
ENCRYPTION	the cipher is performing encryption
DECRYPTION	the cipher is performing decryption

Definition at line 123 of file cryptlib.h.

◆ ByteOrder

enum ByteOrder

Provides the byte ordering.

Big-endian and little-endian modes are supported. Bi-endian and PDP-endian modes are not supported.

Enumerator
LITTLE_ENDIAN_ORDER	byte order is little-endian
BIG_ENDIAN_ORDER	byte order is big-endian

Definition at line 143 of file cryptlib.h.

Function Documentation

◆ NullRNG()

CRYPTOPP_DLL RandomNumberGenerator & NullRNG ( )

Random Number Generator that does not produce random numbers.

Returns: reference that can be passed to functions that require a RandomNumberGenerator

NullRNG() returns a reference that can be passed to functions that require a RandomNumberGenerator but don't actually use it. The NullRNG() throws NotImplemented when a generation function is called.

See also: ClassNullRNG, PK_SignatureScheme::IsProbabilistic()

◆ TheBitBucket()

CRYPTOPP_DLL BufferedTransformation & TheBitBucket ( )

An input discarding BufferedTransformation.

Returns: a reference to a BufferedTransformation object that discards all input

◆ LibraryVersion()

int LibraryVersion ( ... )

Specifies the build-time version of the library.

Returns: integer representing the build-time version

LibraryVersion can help detect inadvertent mixing and matching of library versions. When using Crypto++ distributed by a third party, LibraryVersion() records the version of the shared object that was built by the third party. The LibraryVersion() record resides in cryptlib.o on Unix compatibles and cryptlib.obj on Windows. It does not change when an app links to the library.

LibraryVersion() is declared with C linkage (extern "C") within the CryptoPP namespace to help programs locate the symbol. If the symbol is present, then the library version is 5.7 or above. If it is missing, then the library version is 5.6.5 or below.

The function could be used as shown below.

  if (LibraryVersion() != HeaderVersion())
  {
     cout << "Potential version mismatch" << endl;

     const int lmaj = (LibraryVersion() / 100U) % 10;
     const int lmin = (LibraryVersion() / 10U) % 10;
     const int hmaj = (HeaderVersion() / 100U) % 10;
     const int hmin = (HeaderVersion() / 10U) % 10;

     if(lmaj != hmaj)
        cout << "Major version mismatch" << endl;
     else if(lmin != hmin)
        cout << "Minor version mismatch" << endl;
  }

See also: HeaderVersion(), GitHub Issue 371.

Since: Crypto++ 6.0

◆ HeaderVersion()

int HeaderVersion ( )

inline

Specifies the runtime version of the library.

Returns: integer representing the runtime version

HeaderVersion() can help detect inadvertent mixing and matching of library versions. When using Crypto++ distributed by a third party, HeaderVersion() records the version of the headers used by the app when the app is compiled.

HeaderVersion() is declared with C linkage (extern "C") within the CryptoPP namespace to help programs locate the symbol. If the symbol is present, then the library version is 5.7 or above. If it is missing, then the library version is 5.6.5 or below.

The function could be used as shown below.

  if (LibraryVersion() != HeaderVersion())
  {
     cout << "Potential version mismatch" << endl;

     const int lmaj = (LibraryVersion() / 100U) % 10;
     const int lmin = (LibraryVersion() / 10U) % 10;
     const int hmaj = (HeaderVersion() / 100U) % 10;
     const int hmin = (HeaderVersion() / 10U) % 10;

     if(lmaj != hmaj)
        cout << "Major version mismatch" << endl;
     else if(lmin != hmin)
        cout << "Minor version mismatch" << endl;
  }

See also: LibraryVersion(), GitHub Issue 371.

Since: Crypto++ 6.0

Definition at line 3367 of file cryptlib.h.

Variable Documentation

◆ INFINITE_TIME

const unsigned long INFINITE_TIME = ULONG_MAX

Represents infinite time.

Definition at line 130 of file cryptlib.h.

◆ DEFAULT_CHANNEL

const std::string DEFAULT_CHANNEL

Default channel for BufferedTransformation.

DEFAULT_CHANNEL is equal to an empty string

The definition for DEFAULT_CHANNEL is in cryptlib.cpp. It can be subject to Static Initialization Order Fiasco. If you experience a crash in DEFAULT_CHANNEL where the string object is NULL, then you probably have a global object using DEFAULT_CHANNEL before it has been constructed.

Definition at line 511 of file cryptlib.h.

◆ AAD_CHANNEL

const std::string AAD_CHANNEL

Channel for additional authenticated data.

AAD_CHANNEL is equal to "AAD"

The definition for AAD_CHANNEL is in cryptlib.cpp. It can be subject to Static Initialization Order Fiasco. If you experience a crash in AAD_CHANNEL where the string object is NULL, then you probably have a global object using AAD_CHANNEL before it has been constructed.

Definition at line 520 of file cryptlib.h.

◆ g_nullNameValuePairs

const NameValuePairs& g_nullNameValuePairs

An empty set of name-value pairs.

The definition for g_nullNameValuePairs is in cryptlib.cpp. It can be subject to Static Initialization Order Fiasco. If you experience a crash in g_nullNameValuePairs where the string object is NULL, then you probably have a global object using g_nullNameValuePairs before it has been constructed.

Definition at line 529 of file cryptlib.h.

Classes

Namespaces

Typedefs

Enumerations

Functions

Variables