sha512.h File Reference

#include <stddef.h>
#include <stdint.h>

Include dependency graph for sha512.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Classes
struct	mbedtls_sha512_context
	SHA-512 context structure. More...

Functions
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_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 )
int	mbedtls_sha512_self_test (int verbose)
	Checkup routine.
void	mbedtls_sha512_process (mbedtls_sha512_context *ctx, const unsigned char data[128])

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 );
}

Here is the call graph for this function:

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 );
    }
}

Here is the call graph for this function:

Here is the caller graph for this function:

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 ) );
}

Here is the call graph for this function:

Here is the caller graph for this function:

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 ) );
}

Here is the call graph for this function:

Here is the caller graph for this function:

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;
}

Here is the call graph for this function:

Here is the caller graph for this function:

mbedtls_sha512_self_test()

int mbedtls_sha512_self_test

(

int

verbose

)

Checkup routine.

Returns

0 if successful, or 1 if the test failed

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;
}

Here is the caller graph for this function:

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 );
}

Here is the call graph for this function:

Here is the caller graph for this function: