SHA256.h File Reference

#include <string>
#include <cstddef>
#include "../TypeDefs.h"

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Classes
class	SHA256

Macros
#define	SHA2_SHFR(x, n)   ((x) >> (n))
#define	SHA2_ROTR(x, n)   (((x) >> (n)) | ((x) << ((sizeof(x) << 3) - (n))))
#define	SHA2_ROTL(x, n)   (((x) << (n)) | ((x) >> ((sizeof(x) << 3) - (n))))
#define	SHA2_CH(x, y, z)   (((x) & (y)) ^ (~(x) & (z)))
#define	SHA2_MAJ(x, y, z)   (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
#define	SHA256_F1(x)   (SHA2_ROTR(x, 2) ^ SHA2_ROTR(x, 13) ^ SHA2_ROTR(x, 22))
#define	SHA256_F2(x)   (SHA2_ROTR(x, 6) ^ SHA2_ROTR(x, 11) ^ SHA2_ROTR(x, 25))
#define	SHA256_F3(x)   (SHA2_ROTR(x, 7) ^ SHA2_ROTR(x, 18) ^ SHA2_SHFR(x, 3))
#define	SHA256_F4(x)   (SHA2_ROTR(x, 17) ^ SHA2_ROTR(x, 19) ^ SHA2_SHFR(x, 10))
#define	SHA2_UNPACK32(x, str)
#define	SHA2_PACK32(str, x)

Functions
uint8_t *	sha256 (unsigned char *input, uint inputLen, uint8_t *digest)
uint8_t *	sha256 (std::string input, uint8_t *digest)

Macro Definition Documentation

SHA256_F1

#define SHA256_F1

(

x

)

(SHA2_ROTR(x, 2) ^ SHA2_ROTR(x, 13) ^ SHA2_ROTR(x, 22))

SHA256_F2

#define SHA256_F2

(

x

)

(SHA2_ROTR(x, 6) ^ SHA2_ROTR(x, 11) ^ SHA2_ROTR(x, 25))

SHA256_F3

#define SHA256_F3

(

x

)

(SHA2_ROTR(x, 7) ^ SHA2_ROTR(x, 18) ^ SHA2_SHFR(x, 3))

SHA256_F4

#define SHA256_F4

(

x

)

(SHA2_ROTR(x, 17) ^ SHA2_ROTR(x, 19) ^ SHA2_SHFR(x, 10))

SHA2_CH

#define SHA2_CH	(		x,
			y,
			z
	)		(((x) & (y)) ^ (~(x) & (z)))

SHA2_MAJ

#define SHA2_MAJ	(		x,
			y,
			z
	)		(((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))

SHA2_PACK32

#define SHA2_PACK32	(		str,
			x
	)

Value:

{                                             \
    *(x) =   ((uint32_t) *((str) + 3)      )    \
           | ((uint32_t) *((str) + 2) <<  8)    \
           | ((uint32_t) *((str) + 1) << 16)    \
           | ((uint32_t) *((str) + 0) << 24);   \
}

SHA2_ROTL

#define SHA2_ROTL	(		x,
			n
	)		(((x) << (n)) | ((x) >> ((sizeof(x) << 3) - (n))))

SHA2_ROTR

#define SHA2_ROTR	(		x,
			n
	)		(((x) >> (n)) | ((x) << ((sizeof(x) << 3) - (n))))

SHA2_SHFR

#define SHA2_SHFR	(		x,
			n
	)		((x) >> (n))

SHA2_UNPACK32

#define SHA2_UNPACK32	(		x,
			str
	)

Value:

{                                             \
    *((str) + 3) = (uint8_t) ((x)      );       \
    *((str) + 2) = (uint8_t) ((x) >>  8);       \
    *((str) + 1) = (uint8_t) ((x) >> 16);       \
    *((str) + 0) = (uint8_t) ((x) >> 24);       \
}

Function Documentation

sha256() [1/2]

uint8_t* sha256	(	unsigned char *	input,
		uint	inputLen,
		uint8_t *	digest
	)

sha256() [2/2]

uint8_t* sha256	(	std::string	input,
		uint8_t *	digest
	)