sha1.cc File Reference

#include <string.h>
#include "sha1.h"

Go to the source code of this file.

Defines
#define	GET_UINT32(n, b, i)
#define	PUT_UINT32(n, b, i)
#define	S(x, n)   ((x << n) | ((x & 0xFFFFFFFF) >> (32 - n)))
#define	R(t)
#define	P(a, b, c, d, e, x)
#define	F(x, y, z)   (z ^ (x & (y ^ z)))
#define	K   0x5A827999
#define	F(x, y, z)   (x ^ y ^ z)
#define	K   0x6ED9EBA1
#define	F(x, y, z)   ((x & y) | (z & (x | y)))
#define	K   0x8F1BBCDC
#define	F(x, y, z)   (x ^ y ^ z)
#define	K   0xCA62C1D6
Functions
void	sha1_starts (sha1_context *ctx)
void	sha1_process (sha1_context *ctx, uint8 data[64])
void	sha1_update (sha1_context *ctx, uint8 *input, uint32 length)
void	sha1_finish (sha1_context *ctx, uint8 digest[20])
Variables
static uint8	sha1_padding [64]

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Define Documentation

#define F	(	x,
		y,
		z		)	(x ^ y ^ z)

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

#define F	(	x,
		y,
		z		)	(x ^ y ^ z)

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

#define GET_UINT32	(	n,
		b,
		i		)

Value:

{                                               \
    (n) = ( (uint32) (b)[(i)    ] << 24 )       \
        | ( (uint32) (b)[(i) + 1] << 16 )       \
        | ( (uint32) (b)[(i) + 2] <<  8 )       \
        | ( (uint32) (b)[(i) + 3]       );      \
}

Definition at line 25 of file sha1.cc.

Referenced by sha1_process().

#define K   0xCA62C1D6

#define K   0x8F1BBCDC

#define K   0x6ED9EBA1

#define K   0x5A827999

#define P	(	a,
		b,
		c,
		d,
		e,
		x		)

Value:

{                                                       \
    e += S(a,5) + F(b,c,d) + K + x; b = S(b,30);        \
}

Referenced by sha1_process().

#define PUT_UINT32	(	n,
		b,
		i		)

Value:

{                                               \
    (b)[(i)    ] = (uint8) ( (n) >> 24 );       \
    (b)[(i) + 1] = (uint8) ( (n) >> 16 );       \
    (b)[(i) + 2] = (uint8) ( (n) >>  8 );       \
    (b)[(i) + 3] = (uint8) ( (n)       );       \
}

Definition at line 33 of file sha1.cc.

Referenced by sha1_finish().

#define R

(

t

)

Value:

(                                                       \
    temp = W[(t -  3) & 0x0F] ^ W[(t - 8) & 0x0F] ^     \
           W[(t - 14) & 0x0F] ^ W[ t      & 0x0F],      \
    ( W[t & 0x0F] = S(temp,1) )                         \
)

Referenced by sha1_process().

#define S	(	x,
		n		)	((x << n) | ((x & 0xFFFFFFFF) >> (32 - n)))

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Function Documentation

void sha1_finish	(	sha1_context *	ctx,
		uint8	digest[20]
	)

Definition at line 256 of file sha1.cc.

Referenced by hash().

void sha1_process	(	sha1_context *	ctx,
		uint8	data[64]
	)

Definition at line 53 of file sha1.cc.

References GET_UINT32, P, R, sha1_context::state, and uint32.

Referenced by sha1_update().

void sha1_starts

(

sha1_context *

ctx

)

Definition at line 41 of file sha1.cc.

Referenced by hash().

void sha1_update	(	sha1_context *	ctx,
		uint8 *	input,
		uint32	length
	)

Definition at line 209 of file sha1.cc.

Referenced by hash(), and sha1_finish().

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Variable Documentation

uint8 sha1_padding[64] [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
}

Definition at line 248 of file sha1.cc.

Referenced by sha1_finish().

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