sha512.c File Reference

#include "mbedtls/config.h"
#include "mbedtls/sha512.h"
#include <string.h>
#include "mbedtls/platform.h"
#include "arc4_alt.h"

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Macros
#define	UL64(x)   x##ULL
#define	GET_UINT64_BE(n, b, i)
#define	PUT_UINT64_BE(n, b, i)
#define	SHR(x, n)   (x >> n)
#define	ROTR(x, n)   (SHR(x,n) | (x << (64 - n)))
#define	S0(x)   (ROTR(x, 1) ^ ROTR(x, 8) ^ SHR(x, 7))
#define	S1(x)   (ROTR(x,19) ^ ROTR(x,61) ^ SHR(x, 6))
#define	S2(x)   (ROTR(x,28) ^ ROTR(x,34) ^ ROTR(x,39))
#define	S3(x)   (ROTR(x,14) ^ ROTR(x,18) ^ ROTR(x,41))
#define	F0(x, y, z)   ((x & y) | (z & (x | y)))
#define	F1(x, y, z)   (z ^ (x & (y ^ z)))
#define	P(a, b, c, d, e, f, g, h, x, K)

Functions
void	mbedtls_sha512_init (mbedtls_sha512_context *ctx)
	Initialize SHA-512 context. More...
void	mbedtls_sha512_free (mbedtls_sha512_context *ctx)
	Clear SHA-512 context. More...
void	mbedtls_sha512_clone (mbedtls_sha512_context *dst, const mbedtls_sha512_context *src)
	Clone (the state of) a SHA-512 context. More...
void	mbedtls_sha512_starts (mbedtls_sha512_context *ctx, int is384)
	SHA-512 context setup. More...
void	mbedtls_sha512_process (mbedtls_sha512_context *ctx, const unsigned char data[128])
void	mbedtls_sha512_update (mbedtls_sha512_context *ctx, const unsigned char *input, size_t ilen)
	SHA-512 process buffer. More...
void	mbedtls_sha512_finish (mbedtls_sha512_context *ctx, unsigned char output[64])
	SHA-512 final digest. More...
void	mbedtls_sha512 (const unsigned char *input, size_t ilen, unsigned char output[64], int is384)
	Output = SHA-512( input buffer ) More...
int	mbedtls_sha512_self_test (int verbose)
	Checkup routine. More...

Variables
static const uint64_t	K [80]
static const unsigned char	sha512_padding [128]
static const unsigned char	sha512_test_buf [3][113]
static const int	sha512_test_buflen [3]
static const unsigned char	sha512_test_sum [6][64]

Macro Definition Documentation

F0

#define F0	(		x,
			y,
			z
	)		((x & y) | (z & (x | y)))

F1

#define F1	(		x,
			y,
			z
	)		(z ^ (x & (y ^ z)))

GET_UINT64_BE

#define GET_UINT64_BE	(		n,
			b,
			i
	)

Value:

{                                                       \
    (n) = ( (uint64_t) (b)[(i)    ] << 56 )       \
        | ( (uint64_t) (b)[(i) + 1] << 48 )       \
        | ( (uint64_t) (b)[(i) + 2] << 40 )       \
        | ( (uint64_t) (b)[(i) + 3] << 32 )       \
        | ( (uint64_t) (b)[(i) + 4] << 24 )       \
        | ( (uint64_t) (b)[(i) + 5] << 16 )       \
        | ( (uint64_t) (b)[(i) + 6] <<  8 )       \
        | ( (uint64_t) (b)[(i) + 7]       );      \
}

P

#define P	(		a,
			b,
			c,
			d,
			e,
			f,
			g,
			h,
			x,
			K
	)

Value:

{                                               \
    temp1 = h + S3(e) + F1(e,f,g) + K + x;      \
    temp2 = S2(a) + F0(a,b,c);                  \
    d += temp1; h = temp1 + temp2;              \
}

PUT_UINT64_BE

#define PUT_UINT64_BE	(		n,
			b,
			i
	)

Value:

{                                                       \
    (b)[(i)    ] = (unsigned char) ( (n) >> 56 );       \
    (b)[(i) + 1] = (unsigned char) ( (n) >> 48 );       \
    (b)[(i) + 2] = (unsigned char) ( (n) >> 40 );       \
    (b)[(i) + 3] = (unsigned char) ( (n) >> 32 );       \
    (b)[(i) + 4] = (unsigned char) ( (n) >> 24 );       \
    (b)[(i) + 5] = (unsigned char) ( (n) >> 16 );       \
    (b)[(i) + 6] = (unsigned char) ( (n) >>  8 );       \
    (b)[(i) + 7] = (unsigned char) ( (n)       );       \
}

ROTR

#define ROTR	(		x,
			n
	)		(SHR(x,n) | (x << (64 - n)))

S0

#define S0

(

x

)

(ROTR(x, 1) ^ ROTR(x, 8) ^ SHR(x, 7))

S1

#define S1

(

x

)

(ROTR(x,19) ^ ROTR(x,61) ^ SHR(x, 6))

S2

#define S2

(

x

)

(ROTR(x,28) ^ ROTR(x,34) ^ ROTR(x,39))

S3

#define S3

(

x

)

(ROTR(x,14) ^ ROTR(x,18) ^ ROTR(x,41))

SHR

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

UL64

#define UL64

(

x

)

x##ULL

Function Documentation

mbedtls_sha512()

void mbedtls_sha512	(	const unsigned char *	input,
		size_t	ilen,
		unsigned char	output[64],
		int	is384
	)

Output = SHA-512( input buffer )

Parameters

input	buffer holding the data
ilen	length of the input data
output	SHA-384/512 checksum result
is384	0 = use SHA512, 1 = use SHA384

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mbedtls_sha512_clone()

void mbedtls_sha512_clone	(	mbedtls_sha512_context *	dst,
		const mbedtls_sha512_context *	src
	)

Clone (the state of) a SHA-512 context.

Parameters

dst	The destination context
src	The context to be cloned

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mbedtls_sha512_finish()

void mbedtls_sha512_finish	(	mbedtls_sha512_context *	ctx,
		unsigned char	output[64]
	)

SHA-512 final digest.

Parameters

ctx	SHA-512 context
output	SHA-384/512 checksum result

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mbedtls_sha512_free()

void mbedtls_sha512_free

(

mbedtls_sha512_context *

ctx

)

Clear SHA-512 context.

Parameters

ctx	SHA-512 context to be cleared

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mbedtls_sha512_init()

void mbedtls_sha512_init

(

mbedtls_sha512_context *

ctx

)

Initialize SHA-512 context.

Parameters

ctx	SHA-512 context to be initialized

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mbedtls_sha512_process()

void mbedtls_sha512_process	(	mbedtls_sha512_context *	ctx,
		const unsigned char	data[128]
	)

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mbedtls_sha512_self_test()

int mbedtls_sha512_self_test

(

int

verbose

)

Checkup routine.

Returns

0 if successful, or 1 if the test failed

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mbedtls_sha512_starts()

void mbedtls_sha512_starts	(	mbedtls_sha512_context *	ctx,
		int	is384
	)

SHA-512 context setup.

Parameters

ctx	context to be initialized
is384	0 = use SHA512, 1 = use SHA384

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mbedtls_sha512_update()

void mbedtls_sha512_update	(	mbedtls_sha512_context *	ctx,
		const unsigned char *	input,
		size_t	ilen
	)

SHA-512 process buffer.

Parameters

ctx	SHA-512 context
input	buffer holding the data
ilen	length of the input data

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Variable Documentation

K

const uint64_t K[80]

static

sha512_padding

const unsigned char sha512_padding[128]

static

Initial value:

=
{
 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
}

sha512_test_buf

const unsigned char sha512_test_buf[3][113]

static

Initial value:

=
{
    { "abc" },
    { "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmn"
      "hijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu" },
    { "" }
}

sha512_test_buflen

const int sha512_test_buflen[3]

static

Initial value:

=
{
    3, 112, 1000
}

sha512_test_sum

const unsigned char sha512_test_sum[6][64]

static