SHA1Hash Class Reference

SHA1 as specified by NIST/NSA. More...

#include <sha1hash.h>

Inheritance diagram for SHA1Hash:

[legend]Collaboration diagram for SHA1Hash:

[legend]List of all members.

Public Member Functions
	SHA1Hash ()
	Constructor for SHA1 hash.
	~SHA1Hash ()
	Destructor cleans up the hash state.
const Parameters *	GetPar () const
	Get parameters of this hash algo; see base clas.
uint64	FedBytes () const
	Returns number of fed bytes; see base class.
void	reset ()
	Reset has algo; see base class.
void	feed (const char *buf, size_t len)
	Feed the hash algo with data; see base class.
void	final ()
	Finish hash computation; see base class.
void	GetHash (char *buf) const
	Get current has value; see base class.
Static Public Attributes
const Parameters	par
	Parameters of the hash algo.
Private Member Functions
void	AtomicHash (const unsigned char *msg, uint32 *w)
	Internally used "atomic" hash; msg has a size of 64 bytes.
	SHA1Hash (const SHA1Hash &)
	Do not use these:.
void	operator= (const SHA1Hash &)
Private Attributes
uint32	state [5]
	hash status; hash value
unsigned char	tmpbuf [64]
	may be over from last call to Feed()
int	tmp_size
	number of bytes in tmpbuf

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Detailed Description

SHA1 as specified by NIST/NSA.

Author:

Wolfgang Wieser ] wwieser (a) gmx <*> de [

NOTE: This class is NOT "C++-safe" and you should generally be careful with cryptographic data, so it is best to manage (de)allocation of these objects in a higher order.

Definition at line 41 of file sha1hash.h.

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Constructor & Destructor Documentation

SHA1Hash::SHA1Hash (  const SHA1Hash &   )  [private]

Do not use these:.

SHA1Hash::SHA1Hash (   )  [inline]

Constructor for SHA1 hash. Definition at line 62 of file sha1hash.h. References reset().

SHA1Hash::~SHA1Hash (   )  [inline]

Destructor cleans up the hash state. Definition at line 65 of file sha1hash.h. References reset().

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Member Function Documentation

void SHA1Hash::AtomicHash (  const unsigned char *  msg, uint32 *  w )  [private]

Internally used "atomic" hash; msg has a size of 64 bytes. Definition at line 67 of file sha1hash.cc. References EXPAND, rotate(), sha_const0, sha_const1, sha_const2, sha_const3, sha_func0(), sha_func1(), sha_func2(), sha_func3(), state, and uint32. Referenced by feed(), and final().

uint64 SHA1Hash::FedBytes (   )  const [inline, virtual]

Returns number of fed bytes; see base class. Reimplemented from SecureHashBase. Definition at line 73 of file sha1hash.h. References uint64.

void SHA1Hash::feed (  const char *  buf, size_t  len )  [virtual]

Feed the hash algo with data; see base class. Reimplemented from SecureHashBase. Definition at line 168 of file sha1hash.cc. References AtomicHash(), tmp_size, tmpbuf, uint32, and uint64.

void SHA1Hash::final (   )  [virtual]

Finish hash computation; see base class. Reimplemented from SecureHashBase. Definition at line 219 of file sha1hash.cc. References AtomicHash(), tmp_size, tmpbuf, uint32, and uint64.

void SHA1Hash::GetHash (  char *  buf  )  const [virtual]

Get current has value; see base class. Reimplemented from SecureHashBase. Definition at line 139 of file sha1hash.cc. References state, and uint32.

const Parameters* SHA1Hash::GetPar (   )  const [inline, virtual]

Get parameters of this hash algo; see base clas. Reimplemented from SecureHashBase. Definition at line 69 of file sha1hash.h. References par.

void SHA1Hash::operator= (  const SHA1Hash &   )  [private]

void SHA1Hash::reset (   )  [virtual]

Reset has algo; see base class. Reimplemented from SecureHashBase. Definition at line 154 of file sha1hash.cc. References sha_init_state, state, tmp_size, and tmpbuf. Referenced by SHA1Hash(), and ~SHA1Hash().

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Member Data Documentation

const SecureHashBase::Parameters SHA1Hash::par [static]

Initial value: { INIT_FIELD(hash_size) 20, INIT_FIELD(block_size) 64, INIT_FIELD(hash_ID) 0x1001, INIT_FIELD(name) "SHA1" } Parameters of the hash algo. Reimplemented from SecureHashBase. Definition at line 23 of file sha1hash.cc. Referenced by GetPar().

uint32 SHA1Hash::state[5] [private]

hash status; hash value Definition at line 48 of file sha1hash.h. Referenced by AtomicHash(), GetHash(), and reset().

int SHA1Hash::tmp_size [private]

number of bytes in tmpbuf Definition at line 52 of file sha1hash.h. Referenced by feed(), final(), and reset().

unsigned char SHA1Hash::tmpbuf[64] [private]

may be over from last call to Feed() Definition at line 51 of file sha1hash.h. Referenced by feed(), final(), and reset().

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

• /ray/src/lib/crypto/sha1hash.h
• /ray/src/lib/crypto/sha1hash.cc

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