sha256.cpp File Reference

#include "sha.h"
#include "sha-private.h"

Macros
#define	SHA256_SHR(bits, word)   ((word) >> (bits))
#define	SHA256_ROTL(bits, word)   (((word) << (bits)) | ((word) >> (32-(bits))))
#define	SHA256_ROTR(bits, word)   (((word) >> (bits)) | ((word) << (32-(bits))))
#define	SHA256_SIGMA0(word)   (SHA256_ROTR( 2,word) ^ SHA256_ROTR(13,word) ^ SHA256_ROTR(22,word))
#define	SHA256_SIGMA1(word)   (SHA256_ROTR( 6,word) ^ SHA256_ROTR(11,word) ^ SHA256_ROTR(25,word))
#define	SHA256_sigma0(word)   (SHA256_ROTR( 7,word) ^ SHA256_ROTR(18,word) ^ SHA256_SHR( 3,word))
#define	SHA256_sigma1(word)   (SHA256_ROTR(17,word) ^ SHA256_ROTR(19,word) ^ SHA256_SHR(10,word))
#define	SHA224_256AddLength(context, length)

Functions
static int	SHA224_256Reset (SHA256Context *context, uint32_t *H0)
static void	SHA224_256ProcessMessageBlock (SHA256Context *context)
static void	SHA224_256Finalize (SHA256Context *context, uint8_t Pad_Byte)
static void	SHA224_256PadMessage (SHA256Context *context, uint8_t Pad_Byte)
static int	SHA224_256ResultN (SHA256Context *context, uint8_t Message_Digest[], int HashSize)
int	SHA256Reset (SHA256Context *context)
int	SHA256Input (SHA256Context *context, const uint8_t *message_array, unsigned int length)
int	SHA256Result (SHA256Context *context, uint8_t Message_Digest[SHA256HashSize])

Variables
static uint32_t	addTemp
static uint32_t	SHA256_H0 [SHA256HashSize/4]

Macro Definition Documentation

SHA224_256AddLength

#define SHA224_256AddLength	(		context,
			length
	)

Value:

(addTemp = (context)->Length_Low, (context)->Corrupted = \
    (((context)->Length_Low += (length)) < addTemp) &&     \
    (++(context)->Length_High == 0) ? shaInputTooLong :    \
                                      (context)->Corrupted )

SHA256_ROTL

#define SHA256_ROTL	(		bits,
			word
	)		(((word) << (bits)) | ((word) >> (32-(bits))))

SHA256_ROTR

#define SHA256_ROTR	(		bits,
			word
	)		(((word) >> (bits)) | ((word) << (32-(bits))))

SHA256_SHR

#define SHA256_SHR	(		bits,
			word
	)		((word) >> (bits))

SHA256_SIGMA0

#define SHA256_SIGMA0

(

word

)

(SHA256_ROTR( 2,word) ^ SHA256_ROTR(13,word) ^ SHA256_ROTR(22,word))

SHA256_sigma0

#define SHA256_sigma0

(

word

)

(SHA256_ROTR( 7,word) ^ SHA256_ROTR(18,word) ^ SHA256_SHR( 3,word))

SHA256_SIGMA1

#define SHA256_SIGMA1

(

word

)

(SHA256_ROTR( 6,word) ^ SHA256_ROTR(11,word) ^ SHA256_ROTR(25,word))

SHA256_sigma1

#define SHA256_sigma1

(

word

)

(SHA256_ROTR(17,word) ^ SHA256_ROTR(19,word) ^ SHA256_SHR(10,word))

Function Documentation

SHA224_256Finalize()

static void SHA224_256Finalize ( SHA256Context *  context, uint8_t  Pad_Byte  )

static

SHA224_256PadMessage()

static void SHA224_256PadMessage ( SHA256Context *  context, uint8_t  Pad_Byte  )

static

SHA224_256ProcessMessageBlock()

static void SHA224_256ProcessMessageBlock ( SHA256Context *  context )

static

SHA224_256Reset()

static int SHA224_256Reset ( SHA256Context *  context, uint32_t *  H0  )

static

SHA224_256ResultN()

static int SHA224_256ResultN ( SHA256Context *  context, uint8_t  Message_Digest[], int  HashSize  )

static

SHA256Input()

int SHA256Input	(	SHA256Context *	context,
		const uint8_t *	message_array,
		unsigned int	length
	)

SHA256Reset()

int SHA256Reset

(

SHA256Context *

context

)

SHA256Result()

int SHA256Result	(	SHA256Context *	context,
		uint8_t	Message_Digest[SHA256HashSize]
	)

Variable Documentation

addTemp

uint32_t addTemp

static

SHA256_H0

uint32_t SHA256_H0[SHA256HashSize/4]

static

Initial value:

= {
  0x6A09E667, 0xBB67AE85, 0x3C6EF372, 0xA54FF53A,
  0x510E527F, 0x9B05688C, 0x1F83D9AB, 0x5BE0CD19
}