sha512.cxx File Reference

#include "sha512.h"
#include <string.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
static void	mbedtls_zeroize (void *v, size_t n)
void	mbedtls_sha512_init (mbedtls_sha512_context *ctx)
	Initialize SHA-512 context.
void	mbedtls_sha512_free (mbedtls_sha512_context *ctx)
	Clear SHA-512 context.
void	mbedtls_sha512_clone (mbedtls_sha512_context *dst, const mbedtls_sha512_context *src)
	Clone (the state of) a SHA-512 context.
void	mbedtls_sha512_starts (mbedtls_sha512_context *ctx, int is384)
	SHA-512 context setup.
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.
void	mbedtls_sha512_finish (mbedtls_sha512_context *ctx, unsigned char output[64])
	SHA-512 final digest.
void	mbedtls_sha512 (const unsigned char *input, size_t ilen, unsigned char output[64], int is384)
	Output = SHA-512( input buffer )

Variables
static const uint64_t	K [80]
static const unsigned char	sha512_padding [128]

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]       );      \
}

Definition at line 67 of file sha512.cxx.

{                                                       \
    (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)       );       \
}

Definition at line 81 of file sha512.cxx.

{                                                       \
    (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

Definition at line 42 of file sha512.cxx.

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

Definition at line 360 of file sha512.cxx.

{
    mbedtls_sha512_context ctx;
 
    mbedtls_sha512_init( &ctx );
    mbedtls_sha512_starts( &ctx, is384 );
    mbedtls_sha512_update( &ctx, input, ilen );
    mbedtls_sha512_finish( &ctx, output );
    mbedtls_sha512_free( &ctx );
}

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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

Definition at line 154 of file sha512.cxx.

{
    *dst = *src;
}

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

Definition at line 322 of file sha512.cxx.

{
    size_t last, padn;
    uint64_t high, low;
    unsigned char msglen[16];
 
    high = ( ctx->total[0] >> 61 )
         | ( ctx->total[1] <<  3 );
    low  = ( ctx->total[0] <<  3 );
 
    PUT_UINT64_BE( high, msglen, 0 );
    PUT_UINT64_BE( low,  msglen, 8 );
 
    last = (size_t)( ctx->total[0] & 0x7F );
    padn = ( last < 112 ) ? ( 112 - last ) : ( 240 - last );
 
    mbedtls_sha512_update( ctx, sha512_padding, padn );
    mbedtls_sha512_update( ctx, msglen, 16 );
 
    PUT_UINT64_BE( ctx->state[0], output,  0 );
    PUT_UINT64_BE( ctx->state[1], output,  8 );
    PUT_UINT64_BE( ctx->state[2], output, 16 );
    PUT_UINT64_BE( ctx->state[3], output, 24 );
    PUT_UINT64_BE( ctx->state[4], output, 32 );
    PUT_UINT64_BE( ctx->state[5], output, 40 );
 
    if( ctx->is384 == 0 )
    {
        PUT_UINT64_BE( ctx->state[6], output, 48 );
        PUT_UINT64_BE( ctx->state[7], output, 56 );
    }
}

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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

Definition at line 146 of file sha512.cxx.

{
    if( ctx == NULL )
        return;
 
    mbedtls_zeroize( ctx, sizeof( mbedtls_sha512_context ) );
}

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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

Definition at line 141 of file sha512.cxx.

{
    memset( ctx, 0, sizeof( mbedtls_sha512_context ) );
}

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mbedtls_sha512_process()

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

Definition at line 197 of file sha512.cxx.

{
    int i;
    uint64_t temp1, temp2, W[80];
    uint64_t A, B, C, D, E, F, G, H;
 
#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)                  \
{                                               \
    temp1 = h + S3(e) + F1(e,f,g) + K + x;      \
    temp2 = S2(a) + F0(a,b,c);                  \
    d += temp1; h = temp1 + temp2;              \
}
 
    for( i = 0; i < 16; i++ )
    {
        GET_UINT64_BE( W[i], data, i << 3 );
    }
 
    for( ; i < 80; i++ )
    {
        W[i] = S1(W[i -  2]) + W[i -  7] +
               S0(W[i - 15]) + W[i - 16];
    }
 
    A = ctx->state[0];
    B = ctx->state[1];
    C = ctx->state[2];
    D = ctx->state[3];
    E = ctx->state[4];
    F = ctx->state[5];
    G = ctx->state[6];
    H = ctx->state[7];
    i = 0;
 
    do
    {
        P( A, B, C, D, E, F, G, H, W[i], K[i] ); i++;
        P( H, A, B, C, D, E, F, G, W[i], K[i] ); i++;
        P( G, H, A, B, C, D, E, F, W[i], K[i] ); i++;
        P( F, G, H, A, B, C, D, E, W[i], K[i] ); i++;
        P( E, F, G, H, A, B, C, D, W[i], K[i] ); i++;
        P( D, E, F, G, H, A, B, C, W[i], K[i] ); i++;
        P( C, D, E, F, G, H, A, B, W[i], K[i] ); i++;
        P( B, C, D, E, F, G, H, A, W[i], K[i] ); i++;
    }
    while( i < 80 );
 
    ctx->state[0] += A;
    ctx->state[1] += B;
    ctx->state[2] += C;
    ctx->state[3] += D;
    ctx->state[4] += E;
    ctx->state[5] += F;
    ctx->state[6] += G;
    ctx->state[7] += H;
}

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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

Definition at line 163 of file sha512.cxx.

{
    ctx->total[0] = 0;
    ctx->total[1] = 0;
 
    if( is384 == 0 )
    {
        /* SHA-512 */
        ctx->state[0] = UL64(0x6A09E667F3BCC908);
        ctx->state[1] = UL64(0xBB67AE8584CAA73B);
        ctx->state[2] = UL64(0x3C6EF372FE94F82B);
        ctx->state[3] = UL64(0xA54FF53A5F1D36F1);
        ctx->state[4] = UL64(0x510E527FADE682D1);
        ctx->state[5] = UL64(0x9B05688C2B3E6C1F);
        ctx->state[6] = UL64(0x1F83D9ABFB41BD6B);
        ctx->state[7] = UL64(0x5BE0CD19137E2179);
    }
    else
    {
        /* SHA-384 */
        ctx->state[0] = UL64(0xCBBB9D5DC1059ED8);
        ctx->state[1] = UL64(0x629A292A367CD507);
        ctx->state[2] = UL64(0x9159015A3070DD17);
        ctx->state[3] = UL64(0x152FECD8F70E5939);
        ctx->state[4] = UL64(0x67332667FFC00B31);
        ctx->state[5] = UL64(0x8EB44A8768581511);
        ctx->state[6] = UL64(0xDB0C2E0D64F98FA7);
        ctx->state[7] = UL64(0x47B5481DBEFA4FA4);
    }
 
    ctx->is384 = is384;
}

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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

Definition at line 270 of file sha512.cxx.

{
    size_t fill;
    unsigned int left;
 
    if( ilen == 0 )
        return;
 
    left = (unsigned int) (ctx->total[0] & 0x7F);
    fill = 128 - left;
 
    ctx->total[0] += (uint64_t) ilen;
 
    if( ctx->total[0] < (uint64_t) ilen )
        ctx->total[1]++;
 
    if( left && ilen >= fill )
    {
        memcpy( (void *) (ctx->buffer + left), input, fill );
        mbedtls_sha512_process( ctx, ctx->buffer );
        input += fill;
        ilen  -= fill;
        left = 0;
    }
 
    while( ilen >= 128 )
    {
        mbedtls_sha512_process( ctx, input );
        input += 128;
        ilen  -= 128;
    }
 
    if( ilen > 0 )
        memcpy( (void *) (ctx->buffer + left), input, ilen );
}

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mbedtls_zeroize()

static void mbedtls_zeroize ( void *  v, size_t  n  )

static

Definition at line 57 of file sha512.cxx.

                                                 {
   volatile unsigned char *p = (unsigned char*)v; while( n-- ) *p++ = 0;
}

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Variable Documentation

K

const uint64_t K[80]

static

Definition at line 97 of file sha512.cxx.

{
    UL64(0x428A2F98D728AE22),  UL64(0x7137449123EF65CD),
    UL64(0xB5C0FBCFEC4D3B2F),  UL64(0xE9B5DBA58189DBBC),
    UL64(0x3956C25BF348B538),  UL64(0x59F111F1B605D019),
    UL64(0x923F82A4AF194F9B),  UL64(0xAB1C5ED5DA6D8118),
    UL64(0xD807AA98A3030242),  UL64(0x12835B0145706FBE),
    UL64(0x243185BE4EE4B28C),  UL64(0x550C7DC3D5FFB4E2),
    UL64(0x72BE5D74F27B896F),  UL64(0x80DEB1FE3B1696B1),
    UL64(0x9BDC06A725C71235),  UL64(0xC19BF174CF692694),
    UL64(0xE49B69C19EF14AD2),  UL64(0xEFBE4786384F25E3),
    UL64(0x0FC19DC68B8CD5B5),  UL64(0x240CA1CC77AC9C65),
    UL64(0x2DE92C6F592B0275),  UL64(0x4A7484AA6EA6E483),
    UL64(0x5CB0A9DCBD41FBD4),  UL64(0x76F988DA831153B5),
    UL64(0x983E5152EE66DFAB),  UL64(0xA831C66D2DB43210),
    UL64(0xB00327C898FB213F),  UL64(0xBF597FC7BEEF0EE4),
    UL64(0xC6E00BF33DA88FC2),  UL64(0xD5A79147930AA725),
    UL64(0x06CA6351E003826F),  UL64(0x142929670A0E6E70),
    UL64(0x27B70A8546D22FFC),  UL64(0x2E1B21385C26C926),
    UL64(0x4D2C6DFC5AC42AED),  UL64(0x53380D139D95B3DF),
    UL64(0x650A73548BAF63DE),  UL64(0x766A0ABB3C77B2A8),
    UL64(0x81C2C92E47EDAEE6),  UL64(0x92722C851482353B),
    UL64(0xA2BFE8A14CF10364),  UL64(0xA81A664BBC423001),
    UL64(0xC24B8B70D0F89791),  UL64(0xC76C51A30654BE30),
    UL64(0xD192E819D6EF5218),  UL64(0xD69906245565A910),
    UL64(0xF40E35855771202A),  UL64(0x106AA07032BBD1B8),
    UL64(0x19A4C116B8D2D0C8),  UL64(0x1E376C085141AB53),
    UL64(0x2748774CDF8EEB99),  UL64(0x34B0BCB5E19B48A8),
    UL64(0x391C0CB3C5C95A63),  UL64(0x4ED8AA4AE3418ACB),
    UL64(0x5B9CCA4F7763E373),  UL64(0x682E6FF3D6B2B8A3),
    UL64(0x748F82EE5DEFB2FC),  UL64(0x78A5636F43172F60),
    UL64(0x84C87814A1F0AB72),  UL64(0x8CC702081A6439EC),
    UL64(0x90BEFFFA23631E28),  UL64(0xA4506CEBDE82BDE9),
    UL64(0xBEF9A3F7B2C67915),  UL64(0xC67178F2E372532B),
    UL64(0xCA273ECEEA26619C),  UL64(0xD186B8C721C0C207),
    UL64(0xEADA7DD6CDE0EB1E),  UL64(0xF57D4F7FEE6ED178),
    UL64(0x06F067AA72176FBA),  UL64(0x0A637DC5A2C898A6),
    UL64(0x113F9804BEF90DAE),  UL64(0x1B710B35131C471B),
    UL64(0x28DB77F523047D84),  UL64(0x32CAAB7B40C72493),
    UL64(0x3C9EBE0A15C9BEBC),  UL64(0x431D67C49C100D4C),
    UL64(0x4CC5D4BECB3E42B6),  UL64(0x597F299CFC657E2A),
    UL64(0x5FCB6FAB3AD6FAEC),  UL64(0x6C44198C4A475817)
};

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
}

Definition at line 307 of file sha512.cxx.

{
 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
};