sha256.c File Reference

#include <stdint.h>
#include <string.h>
#include "sha256.h"

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Macros
#define	DBL_INT_ADD(a, b, c)   if (a > 0xffffffff - (c)) ++b; a += c;
#define	ROTLEFT(a, b)   (((a) << (b)) | ((a) >> (32-(b))))
#define	ROTRIGHT(a, b)   (((a) >> (b)) | ((a) << (32-(b))))
#define	CH(x, y, z)   (((x) & (y)) ^ (~(x) & (z)))
#define	MAJ(x, y, z)   (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
#define	EP0(x)   (ROTRIGHT(x,2) ^ ROTRIGHT(x,13) ^ ROTRIGHT(x,22))
#define	EP1(x)   (ROTRIGHT(x,6) ^ ROTRIGHT(x,11) ^ ROTRIGHT(x,25))
#define	SIG0(x)   (ROTRIGHT(x,7) ^ ROTRIGHT(x,18) ^ ((x) >> 3))
#define	SIG1(x)   (ROTRIGHT(x,17) ^ ROTRIGHT(x,19) ^ ((x) >> 10))

Functions
void	sha256_hash (char *hash, const char *data, size_t len)

Variables
uint32_t	k [64]

Macro Definition Documentation

CH

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

Definition at line 19 of file sha256.c.

DBL_INT_ADD

#define DBL_INT_ADD	(		a,
			b,
			c
	)		if (a > 0xffffffff - (c)) ++b; a += c;

Definition at line 15 of file sha256.c.

EP0

#define EP0

(

x

)

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

Definition at line 21 of file sha256.c.

EP1

#define EP1

(

x

)

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

Definition at line 22 of file sha256.c.

MAJ

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

Definition at line 20 of file sha256.c.

ROTLEFT

#define ROTLEFT	(		a,
			b
	)		(((a) << (b)) | ((a) >> (32-(b))))

Definition at line 16 of file sha256.c.

ROTRIGHT

#define ROTRIGHT	(		a,
			b
	)		(((a) >> (b)) | ((a) << (32-(b))))

Definition at line 17 of file sha256.c.

SIG0

#define SIG0

(

x

)

(ROTRIGHT(x,7) ^ ROTRIGHT(x,18) ^ ((x) >> 3))

Definition at line 23 of file sha256.c.

SIG1

#define SIG1

(

x

)

(ROTRIGHT(x,17) ^ ROTRIGHT(x,19) ^ ((x) >> 10))

Definition at line 24 of file sha256.c.

Function Documentation

sha256_hash()

void sha256_hash	(	char *	hash,
		const char *	data,
		size_t	len
	)

Definition at line 161 of file sha256.c.

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Variable Documentation

k

uint32_t k[64]

Initial value:

=
{
   0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1,
   0x923f82a4, 0xab1c5ed5, 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
   0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, 0xe49b69c1, 0xefbe4786,
   0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
   0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147,
   0x06ca6351, 0x14292967, 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
   0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, 0xa2bfe8a1, 0xa81a664b,
   0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
   0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a,
   0x5b9cca4f, 0x682e6ff3, 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
   0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
}

Definition at line 26 of file sha256.c.