sha224_256.cpp File Reference

Compute sha224 hash and sha256 hash. More...

#include <cstring>
#include "sha224_256.hpp"

Include dependency graph for sha224_256.cpp:

Go to the source code of this file.

Macros
#define	X(a)
	Helper function for SHA256's computing. More...
#define	Cho(x, y, z)   (z ^ (x & (y ^ z))) /* (4.2) same as SHA-1's F1 */
	Helper function for SHA256's computing. More...
#define	Maj(x, y, z)   ((x & y) | (z & (x|y))) /* (4.3) same as SHA-1's F3 */
	Helper function for SHA256's computing. More...
#define	Sum0(x)   (ror ((x), 2) ^ ror ((x), 13) ^ ror ((x), 22)) /* (4.4) */
	Helper function for SHA256's computing. More...
#define	Sum1(x)   (ror ((x), 6) ^ ror ((x), 11) ^ ror ((x), 25)) /* (4.5) */
	Helper function for SHA256's computing. More...
#define	S0(x)   (ror ((x), 7) ^ ror ((x), 18) ^ ((x) >> 3)) /* (4.6) */
	Helper function for SHA256's computing. More...
#define	S1(x)   (ror ((x), 17) ^ ror ((x), 19) ^ ((x) >> 10)) /* (4.7) */
	Helper function for SHA256's computing. More...
#define	R(a, b, c, d, e, f, g, h, k, w)
	Helper function for SHA256's computing. More...

Detailed Description

Compute sha224 hash and sha256 hash.

Definition in file sha224_256.cpp.

Macro Definition Documentation

Cho

#define Cho	(		x,
			y,
			z
	)		(z ^ (x & (y ^ z))) /* (4.2) same as SHA-1's F1 */

Helper function for SHA256's computing.

Definition at line 189 of file sha224_256.cpp.

Maj

#define Maj	(		x,
			y,
			z
	)		((x & y) | (z & (x|y))) /* (4.3) same as SHA-1's F3 */

Helper function for SHA256's computing.

Definition at line 190 of file sha224_256.cpp.

R

#define R	(		a,
			b,
			c,
			d,
			e,
			f,
			g,
			h,
			k,
			w
	)

Value:

          do                                 \
          {                                                       \
            t1 = (h) + Sum1((e)) + Cho((e),(f),(g)) + (k) + (w);  \
            t2 = Sum0((a)) + Maj((a),(b),(c));                    \
            h = g;                                                \
            g = f;                                                \
            f = e;                                                \
            e = d + t1;                                           \
            d = c;                                                \
            c = b;                                                \
            b = a;                                                \
            a = t1 + t2;                                          \
          } while (0)

Helper function for SHA256's computing.

Definition at line 195 of file sha224_256.cpp.

S0

#define S0

(

x

)

(ror ((x), 7) ^ ror ((x), 18) ^ ((x) >> 3)) /* (4.6) */

Helper function for SHA256's computing.

Definition at line 193 of file sha224_256.cpp.

S1

#define S1

(

x

)

(ror ((x), 17) ^ ror ((x), 19) ^ ((x) >> 10)) /* (4.7) */

Helper function for SHA256's computing.

Definition at line 194 of file sha224_256.cpp.

Sum0

#define Sum0

(

x

)

(ror ((x), 2) ^ ror ((x), 13) ^ ror ((x), 22)) /* (4.4) */

Helper function for SHA256's computing.

Definition at line 191 of file sha224_256.cpp.

Sum1

#define Sum1

(

x

)

(ror ((x), 6) ^ ror ((x), 11) ^ ror ((x), 25)) /* (4.5) */

Helper function for SHA256's computing.

Definition at line 192 of file sha224_256.cpp.

X

#define X

(

a

)

Value:

                    do { *p++ = h##a >> 24; *p++ = h##a >> 16;   \
                    *p++ = h##a >> 8; *p++ = h##a; } while(0)

Helper function for SHA256's computing.