pcl::SHA256 Class Reference

Implementation of the SHA-256 cryptographic hashing algorithm. More...

#include <Cryptography.h>

Inheritance diagram for pcl::SHA256:

Public Member Functions
	SHA256 ()=default
	~SHA256 () override
String	AlgorithmName () const override
size_type	HashLength () const override
void	Initialize () override
void	Update (const void *data, size_type length) override
Public Member Functions inherited from pcl::CryptographicHash
	CryptographicHash ()=default
	CryptographicHash (const CryptographicHash &)=delete
virtual	~CryptographicHash ()
ByteArray	Finalize ()
template<class C >
ByteArray	Hash (const C &data)
ByteArray	Hash (const void *data, size_type length)
void	Hash (uint8 *hash, const void *data, size_type length)
CryptographicHash &	operator= (const CryptographicHash &)=delete
template<class C >
void	UpdateWithContainer (const C &data)

Additional Inherited Members

Detailed Description

References

The SHA-2 family of secure hash functions (SHA-256, SHA-384, and SHA-512) was specified by NIST in 2002 with the publication of FIPS PUB 180-2. FIPS PUB 180-2 has been superseded by FIPS PUB 180-3 and FIPS PUB 180-4:

http://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.180-4.pdf

An SHA-256 message digest is 256 bits (32 bytes) long.

See also

CryptographicHash, MD5, SHA1, SHA224, SHA384, SHA512, CryptographicHashFactory

Definition at line 448 of file Cryptography.h.

Constructor & Destructor Documentation

SHA256()

pcl::SHA256::SHA256 ( )

default

Constructs an SHA-256 hash generator.

~SHA256()

pcl::SHA256::~SHA256 ( )

override

Destroys an SHA-256 hash generator.

Member Function Documentation

AlgorithmName()

String pcl::SHA256::AlgorithmName ( ) const

inlineoverridevirtual

Returns the name of this cryptographic hashing algorithm: "SHA256".

Implements pcl::CryptographicHash.

Definition at line 465 of file Cryptography.h.

HashLength()

size_type pcl::SHA256::HashLength ( ) const

inlineoverridevirtual

Returns the length in bytes of a hash sequence (or message digest) calculated with this cryptographic hashing algorithm.

As reimplemented in SHA256, this function returns 32, the length in bytes of an SHA-256 digest.

Implements pcl::CryptographicHash.

Definition at line 477 of file Cryptography.h.

Initialize()

void pcl::SHA256::Initialize ( )

overridevirtual

Initializes this cryptographic hash generator.

Implements pcl::CryptographicHash.

Update()

void pcl::SHA256::Update ( const void *  data, size_type  length  )

overridevirtual

Updates the hash generator with a new data chunk of the specified length in bytes.

Implements pcl::CryptographicHash.

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

• Cryptography.h