this class provides an API to calculate various cryptographic hash functions More...

Inheritance diagram for cppcms::crypto::message_digest:

Public Member Functions
virtual unsigned	digest_size () const =0
virtual unsigned	block_size () const =0
virtual void	append (void const *ptr, size_t size)=0
virtual void	readout (void *ptr)=0
virtual message_digest *	clone () const =0
virtual char const *	name () const =0
Static Public Member Functions
static std::auto_ptr < message_digest >	md5 ()
static std::auto_ptr < message_digest >	sha1 ()
static std::auto_ptr < message_digest >	create_by_name (std::string const &name)
Protected Member Functions
	message_digest ()
	It should be implemented in derived classes.

Detailed Description

this class provides an API to calculate various cryptographic hash functions

Member Function Documentation

virtual void cppcms::crypto::message_digest::append	(	void const *	ptr,
		size_t	size
	)			`[pure virtual]`

Add more data of size bytes for processing

virtual unsigned cppcms::crypto::message_digest::block_size ( ) const [pure virtual]

Get processing block size, returns 64 or 128, used mostly for correct HMAC calculations

virtual message_digest* cppcms::crypto::message_digest::clone ( ) const [pure virtual]

Make a polymorphic copy of this object, note the state of copied object is reset to initial

static std::auto_ptr<message_digest> cppcms::crypto::message_digest::create_by_name ( std::string const & name ) [static]

Create message digest by name, more then sha1 and md5 may be supported, if CppCMS is compiled with cryptography library like libgcrypt or openssl

virtual unsigned cppcms::crypto::message_digest::digest_size ( ) const [pure virtual]

Get the size of message digest, for example for MD5 it is 16, for SHA1 it is 20

static std::auto_ptr<message_digest> cppcms::crypto::message_digest::md5 ( ) [static]

Create MD5 message digest

virtual char const* cppcms::crypto::message_digest::name ( ) const [pure virtual]

Get the name of the hash function

virtual void cppcms::crypto::message_digest::readout ( void * ptr ) [pure virtual]

Read the message digest for the data and reset it into initial state, provided buffer must be digest_size() bytes

static std::auto_ptr<message_digest> cppcms::crypto::message_digest::sha1 ( ) [static]

Create SHA1 message digest

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