blob_uint256 Class Reference

256-bit opaque blob. More...

#include <blob_uint256.h>

Inheritance diagram for blob_uint256:

Collaboration diagram for blob_uint256:

Public Member Functions
	blob_uint256 ()
	blob_uint256 (const base_blob< 256 > &b)
	blob_uint256 (const std::vector< unsigned char > &vch)
uint64_t	GetCheapHash () const
	A cheap hash function that just returns 64 bits from the result, it can be used when the contents are considered uniformly random. More...
uint64_t	GetHash (const blob_uint256 &salt) const
	A more secure, salted hash function. More...
Public Member Functions inherited from base_blob< 256 >
	base_blob ()
	base_blob (const std::vector< unsigned char > &vch)
bool	IsNull () const
void	SetNull ()
std::string	GetHex () const
void	SetHex (const char *psz)
void	SetHex (const std::string &str)
std::string	ToString () const
unsigned char *	begin ()
const unsigned char *	begin () const
unsigned char *	end ()
const unsigned char *	end () const
unsigned int	size () const
unsigned int	GetSerializeSize (int nType, int nVersion) const
void	Serialize (Stream &s, int nType, int nVersion) const
void	Unserialize (Stream &s, int nType, int nVersion)

Additional Inherited Members
Public Types inherited from base_blob< 256 >
enum
Public Attributes inherited from base_blob< 256 >
uint8_t	data [WIDTH]

Detailed Description

256-bit opaque blob.

Note

This type is called uint256 for historical reasons only. It is an opaque blob of 256 bits and has no integer operations. Use arith_uint256 if those are required.

Definition at line 115 of file blob_uint256.h.

Constructor & Destructor Documentation

blob_uint256() [1/3]

blob_uint256::blob_uint256 ( )

inline

Definition at line 117 of file blob_uint256.h.

blob_uint256() [2/3]

blob_uint256::blob_uint256 ( const base_blob< 256 > &  b )

inline

Definition at line 118 of file blob_uint256.h.

blob_uint256() [3/3]

blob_uint256::blob_uint256 ( const std::vector< unsigned char > &  vch )

inlineexplicit

Definition at line 119 of file blob_uint256.h.

Member Function Documentation

GetCheapHash()

uint64_t blob_uint256::GetCheapHash ( ) const

inline

A cheap hash function that just returns 64 bits from the result, it can be used when the contents are considered uniformly random.

It is not appropriate when the value can easily be influenced from outside as e.g. a network adversary could provide values to trigger worst-case behavior.

Note

The result of this function is not stable between little and big endian.

Definition at line 127 of file blob_uint256.h.

Here is the call graph for this function:

GetHash()

uint64_t blob_uint256::GetHash

(

const blob_uint256 &

salt

)

const

A more secure, salted hash function.

Note

This hash is not stable between little and big endian.

Definition at line 126 of file blob_uint256.cpp.

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

• src/blob_uint256.h
• src/blob_uint256.cpp