IETF ChaCha20 stream cipher. More...

#include <chacha.h>

Inheritance diagram for ChaChaTLS:

Public Types
typedef SymmetricCipherFinal< ConcretePolicyHolder< ChaChaTLS_Policy, AdditiveCipherTemplate<> >, ChaChaTLS_Info >	Encryption
	ChaCha-TLS Encryption.

typedef Encryption	Decryption
	ChaCha-TLS Decryption.

Public Types inherited from SymmetricCipherDocumentation
typedef SymmetricCipher	Encryption
	implements the SymmetricCipher interface

typedef SymmetricCipher	Decryption
	implements the SymmetricCipher interface

Additional Inherited Members
Public Member Functions inherited from FixedKeyLength< 32, SimpleKeyingInterface::UNIQUE_IV, 12 >
	CRYPTOPP_CONSTANT (KEYLENGTH=N)
	The default key length used by the algorithm provided as a constant.

	CRYPTOPP_CONSTANT (MIN_KEYLENGTH=N)
	The minimum key length used by the algorithm provided as a constant.

	CRYPTOPP_CONSTANT (MAX_KEYLENGTH=N)
	The maximum key length used by the algorithm provided as a constant.

	CRYPTOPP_CONSTANT (DEFAULT_KEYLENGTH=N)
	The default key length used by the algorithm provided as a constant.

	CRYPTOPP_CONSTANT (IV_REQUIREMENT=IV_REQ)
	The default IV requirements for the algorithm provided as a constant.

	CRYPTOPP_CONSTANT (IV_LENGTH=IV_L)
	The default IV length used by the algorithm provided as a constant.

CRYPTOPP_STATIC_CONSTEXPR size_t CRYPTOPP_API	StaticGetValidKeyLength (size_t keylength)
	The default key length for the algorithm provided by a static function.

Public Member Functions inherited from FixedRounds< 20 >
	CRYPTOPP_CONSTANT (ROUNDS=R)
	The number of rounds for the algorithm provided as a constant.

Static Public Member Functions inherited from ChaChaTLS_Info
static const char *	StaticAlgorithmName ()
	The algorithm name.

Detailed Description

IETF ChaCha20 stream cipher.

This is the IETF's variant of Bernstein's ChaCha from RFC 8439. IETF ChaCha is called ChaChaTLS in the Crypto++ library. It is slightly different from the Bernstein implementation. ChaCha-TLS can be used for cipher suites TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256, TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256, and TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256.