libdar::crypto_sym Class Reference

symetrical strong encryption, interface to grypt library More...

#include <crypto_sym.hpp>

Inherits libdar::crypto_module.

Collaboration diagram for libdar::crypto_sym:

Public Member Functions
	crypto_sym (const secu_string &password, const archive_version &reading_ver, crypto_algo algo, const std::string &salt, const infinint &iteration_count, hash_algo kdf_hash, bool use_pkcs5)
	crypto_sym (const crypto_sym &ref)
	crypto_sym (crypto_sym &&ref) noexcept
crypto_sym &	operator= (const crypto_sym &ref)
crypto_sym &	operator= (crypto_sym &&ref) noexcept
virtual U_32	encrypted_block_size_for (U_32 clear_block_size) override
virtual U_32	clear_block_allocated_size_for (U_32 clear_block_size) override
virtual U_32	encrypt_data (const infinint &block_num, const char *clear_buf, const U_32 clear_size, const U_32 clear_allocated, char *crypt_buf, U_32 crypt_size) override
virtual U_32	decrypt_data (const infinint &block_num, const char *crypt_buf, const U_32 crypt_size, char *clear_buf, U_32 clear_size) override
virtual std::unique_ptr< crypto_module >	clone () const override
const std::string &	get_salt () const
	give access to the calculated or provided salt More...

Static Public Member Functions
static size_t	max_key_len (crypto_algo algo)
	returns the max key length in octets for the given algorithm
static size_t	max_key_len_libdar (crypto_algo algo)
	returns the max key length in octets to use to compute a key from a user provided password
static bool	is_a_strong_password (crypto_algo algo, const secu_string &password)
	check whether the given password is reported as strong in regard to the given cipher

Private Member Functions
void	detruit ()
void	copy_from (const crypto_sym &ref)
void	move_from (crypto_sym &&ref)

Private Attributes
std::string	sel
	the salt More...

Detailed Description

symetrical strong encryption, interface to grypt library

Definition at line 66 of file crypto_sym.hpp.

Constructor & Destructor Documentation

crypto_sym() [1/3]

libdar::crypto_sym::crypto_sym	(	const secu_string &	password,
		const archive_version &	reading_ver,
		crypto_algo	algo,
		const std::string &	salt,
		const infinint &	iteration_count,
		hash_algo	kdf_hash,
		bool	use_pkcs5
	)

Parameters

password	cipher password
reading_ver	archive format version
algo	ciphering algorithm to use
salt	if set empty, the salt is generated by the crypto_sym when use_pkcs5 is set to true, else it is not used
iteration_count	not used if use_pkcs5 is not set
kdf_hash	not used if use_pkcs5 is not set
use_pkcs5	must be set to true when password is human defined to add a key derivation

crypto_sym() [2/3]

libdar::crypto_sym::crypto_sym ( const crypto_sym &  ref )

inline

Definition at line 77 of file crypto_sym.hpp.

crypto_sym() [3/3]

libdar::crypto_sym::crypto_sym ( crypto_sym &&  ref )

inlinenoexcept

Definition at line 78 of file crypto_sym.hpp.

~crypto_sym()

virtual libdar::crypto_sym::~crypto_sym ( )

inlinevirtualnoexcept

Definition at line 81 of file crypto_sym.hpp.

Member Function Documentation

copy_from()

void libdar::crypto_sym::copy_from ( const crypto_sym &  ref )

inlineprivate

Definition at line 189 of file crypto_sym.hpp.

detruit()

void libdar::crypto_sym::detruit ( )

inlineprivate

Definition at line 188 of file crypto_sym.hpp.

get_salt()

const std::string & libdar::crypto_sym::get_salt ( ) const

inline

give access to the calculated or provided salt

Definition at line 100 of file crypto_sym.hpp.

References sel.

move_from()

void libdar::crypto_sym::move_from ( crypto_sym &&  ref )

inlineprivate

Definition at line 190 of file crypto_sym.hpp.

operator=() [1/2]

crypto_sym & libdar::crypto_sym::operator= ( const crypto_sym &  ref )

inline

Definition at line 79 of file crypto_sym.hpp.

operator=() [2/2]

crypto_sym & libdar::crypto_sym::operator= ( crypto_sym &&  ref )

inlinenoexcept

Definition at line 80 of file crypto_sym.hpp.

Member Data Documentation

sel

std::string libdar::crypto_sym::sel

private

the salt

Definition at line 113 of file crypto_sym.hpp.

Referenced by get_salt().

---

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

• crypto_sym.hpp