sha256.c File Reference

Macros
#define	Ch(x, y, z)   (z ^ (x & (y ^ z)))
#define	Maj(x, y, z)   (((x | y) & z) | (x & y))
#define	S(x, n)   RORc((x), (n))
#define	R(x, n)   (((x)&0xFFFFFFFFUL) >> (n))
#define	Sigma0(x)   (S(x, 2) ^ S(x, 13) ^ S(x, 22))
#define	Sigma1(x)   (S(x, 6) ^ S(x, 11) ^ S(x, 25))
#define	Gamma0(x)   (S(x, 7) ^ S(x, 18) ^ R(x, 3))
#define	Gamma1(x)   (S(x, 17) ^ S(x, 19) ^ R(x, 10))
#define	RND(a, b, c, d, e, f, g, h, i, ki)

Functions
static void	sha256_compress (sha256_context *md, const uint8_t *buf)
void	sha256_init (sha256_context *md)
void	sha256_process (sha256_context *md, const uint8_t *in, size_t inlen)
void	sha256_done (sha256_context *md, uint8_t *out)
void	sha256_hash (const uint8_t *data, size_t len, uint8_t *digest)

Macro Definition Documentation

Ch

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

Maj

#define Maj	(		x,
			y,
			z
	)		(((x | y) & z) | (x & y))

S

#define S	(		x,
			n
	)		RORc((x), (n))

R

#define R	(		x,
			n
	)		(((x)&0xFFFFFFFFUL) >> (n))

Sigma0

#define Sigma0

(

x

)

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

Sigma1

#define Sigma1

(

x

)

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

Gamma0

#define Gamma0

(

x

)

(S(x, 7) ^ S(x, 18) ^ R(x, 3))

Gamma1

#define Gamma1

(

x

)

(S(x, 17) ^ S(x, 19) ^ R(x, 10))

RND

#define RND	(		a,
			b,
			c,
			d,
			e,
			f,
			g,
			h,
			i,
			ki
	)

Value:

    t0 = h + Sigma1(e) + Ch(e, f, g) + ki + W[i]; \
    t1 = Sigma0(a) + Maj(a, b, c);                \
    d += t0;                                      \
    h = t0 + t1;

Function Documentation

sha256_compress()

static void sha256_compress ( sha256_context *  md, const uint8_t *  buf  )

static

sha256_init()

void sha256_init

(

sha256_context *

md

)

sha256_process()

void sha256_process	(	sha256_context *	md,
		const uint8_t *	in,
		size_t	inlen
	)

sha256_done()

void sha256_done	(	sha256_context *	md,
		uint8_t *	out
	)

sha256_hash()

void sha256_hash	(	const uint8_t *	data,
		size_t	len,
		uint8_t *	digest
	)