stx::CBTreeDB< _Key, _Compare, _BTreePageSize, _AppVersionId >::SHA256 Class Reference

SHA-256 Message Digest implementation class. More...

#include <stx-cbtreedb.h>

Public Member Functions
	SHA256 ()
	SHA_256 / MDx_HashFunction Constructor.
void	clear () throw ()
	Clear memory of sensitive data.
SHA256 &	update (const void *input, uint32_t length)
	Update this SHA256 calculation with new data.
void	final (byte output[OUTPUT_LENGTH])
	Return final SHA256 digest of this object in the buffer.
std::string	final ()
	Return final SHA256 digest of this object as a string.
bool	final_equals (byte compare[OUTPUT_LENGTH])
	Returns true if the final SHA256 digest of this object equals the given data.
std::string	final_hex ()
	Return final SHA256 digest of this object as a string encoded in hexadecimal.
Static Public Member Functions
static std::string	digest_bin (const void *input, uint32_t length)
	Calculate SHA256 digest of bytes in the given range.
static std::string	digest_bin (const std::string &input)
	Calculate SHA256 digest of a string.
static std::string	digest_hex (const void *input, uint32_t length)
	Calculate SHA256 digest of bytes in the given range.
static std::string	digest_hex (const std::string &input)
	Calculate SHA256 digest of a string.
Protected Member Functions
void	add_data (const byte input[], u32bit length)
	Update the hash.
void	write_count (byte out[])
	Write the count bits to the buffer.
void	final_result (byte output[OUTPUT_LENGTH])
	Finalize a Hash.
Private Types
typedef uint8_t	byte
	local typedef from Botan library
typedef uint32_t	u32bit
	local typedef from Botan library
typedef uint64_t	u64bit
	local typedef from Botan library
Private Member Functions
template<typename T >
T	rotate_left (T input, u32bit rot)
	Rotation Functions.
template<typename T >
T	rotate_right (T input, u32bit rot)
	Rotation Functions.
template<typename T >
byte	get_byte (u32bit byte_num, T input)
	Byte Extraction Function.
u32bit	make_u32bit (byte input0, byte input1, byte input2, byte input3)
	Byte to Word Conversions.
u32bit	rho (u32bit X, u32bit rot1, u32bit rot2, u32bit rot3)
	SHA-256 Rho Function.
u32bit	sigma (u32bit X, u32bit rot1, u32bit rot2, u32bit shift)
	SHA-256 Sigma Function.
void	F1 (u32bit A, u32bit B, u32bit C, u32bit &D, u32bit E, u32bit F, u32bit G, u32bit &H, u32bit msg, u32bit magic)
	SHA-256 F1 Function.
void	hash (const byte input[])
	SHA-256 Compression Function.
void	copy_out (byte output[])
	Copy out the digest.
Private Attributes
u32bit	W [64]
u32bit	digest [8]
byte	buffer [HASH_BLOCK_SIZE]
u64bit	count
u32bit	position
Static Private Attributes
static const u32bit	OUTPUT_LENGTH = 32
	length of the resulting digest
static const u32bit	HASH_BLOCK_SIZE = 64
	block of bytes to process in hash function
static const u32bit	COUNT_SIZE = 8
	length of size suffix hashed during finalization

Detailed Description

template<typename _Key = uint32_t, typename _Compare = std::less<_Key>, unsigned int _BTreePageSize = 1024, uint32_t _AppVersionId = 0>
class stx::CBTreeDB< _Key, _Compare, _BTreePageSize, _AppVersionId >::SHA256

SHA-256 Message Digest implementation class.

Copied from the Botan-1.6.4 cryptography library.

Definition at line 453 of file stx-cbtreedb.h.