sha1.c File Reference

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

Defines
#define	SWAP(n)   (((n) << 24) | (((n) & 0xff00) << 8) | (((n) >> 8) & 0xff00) | ((n) >> 24))
#define	BLOCKSIZE   32768
#define	alignof(type)   offsetof (struct { char c; type x; }, x)
#define	UNALIGNED_P(p)   (((size_t) p) % alignof (uint32_t) != 0)
#define	K1   0x5a827999
#define	K2   0x6ed9eba1
#define	K3   0x8f1bbcdc
#define	K4   0xca62c1d6
#define	F1(B, C, D)   ( D ^ ( B & ( C ^ D ) ) )
#define	F2(B, C, D)   (B ^ C ^ D)
#define	F3(B, C, D)   ( ( B & C ) | ( D & ( B | C ) ) )
#define	F4(B, C, D)   (B ^ C ^ D)
#define	rol(x, n)   (((x) << (n)) | ((uint32_t) (x) >> (32 - (n))))
#define	M(I)
#define	R(A, B, C, D, E, F, K, M)
Functions
void	sha1_init_ctx (struct sha1_ctx *ctx)
static void	set_uint32 (char *cp, uint32_t v)
void *	sha1_read_ctx (const struct sha1_ctx *ctx, void *resbuf)
void *	sha1_finish_ctx (struct sha1_ctx *ctx, void *resbuf)
int	sha1_stream (FILE *stream, void *resblock)
void *	sha1_buffer (const char *buffer, size_t len, void *resblock)
void	sha1_process_bytes (const void *buffer, size_t len, struct sha1_ctx *ctx)
void	sha1_process_block (const void *buffer, size_t len, struct sha1_ctx *ctx)
Variables
static const unsigned char	fillbuf [64] = { 0x80, 0 }

---

Define Documentation

#define alignof

(

type

)

offsetof (struct { char c; type x; }, x)

#define BLOCKSIZE   32768

Referenced by sha1_stream().

#define F1	(		B,
			C,
			D
	)			( D ^ ( B & ( C ^ D ) ) )

Referenced by sha1_process_block().

#define F2	(		B,
			C,
			D
	)			(B ^ C ^ D)

Referenced by sha1_process_block().

#define F3	(		B,
			C,
			D
	)			( ( B & C ) | ( D & ( B | C ) ) )

Referenced by sha1_process_block().

#define F4	(		B,
			C,
			D
	)			(B ^ C ^ D)

Referenced by sha1_process_block().

#define K1   0x5a827999

Referenced by sha1_process_block().

#define K2   0x6ed9eba1

Referenced by sha1_process_block().

#define K3   0x8f1bbcdc

Referenced by sha1_process_block().

#define K4   0xca62c1d6

Referenced by sha1_process_block().

#define M

(

I

)

Value:

( tm =   x[I&0x0f] ^ x[(I-14)&0x0f] \
                    ^ x[(I-8)&0x0f] ^ x[(I-3)&0x0f] \
               , (x[I&0x0f] = rol(tm, 1)) )

Referenced by sha1_process_block().

#define R	(		A,
			B,
			C,
			D,
			E,
			F,
			K,
			M
	)

Value:

do { E += rol( A, 5 )     \
                                      + F( B, C, D )  \
                                      + K             \
                                      + M;            \
                                 B = rol( B, 30 );    \
                               } while(0)

Referenced by sha1_process_block().

#define rol	(		x,
			n
	)			(((x) << (n)) | ((uint32_t) (x) >> (32 - (n))))

#define SWAP

(

n

)

(((n) << 24) | (((n) & 0xff00) << 8) | (((n) >> 8) & 0xff00) | ((n) >> 24))

Referenced by sha1_finish_ctx(), sha1_process_block(), and sha1_read_ctx().

#define UNALIGNED_P

(

p

)

(((size_t) p) % alignof (uint32_t) != 0)

Referenced by sha1_process_bytes().

---

Function Documentation

static void set_uint32	(	char *	cp,
		uint32_t	v
	)			[inline, static]

Referenced by sha1_read_ctx().

void* sha1_buffer	(	const char *	buffer,
		size_t	len,
		void *	resblock
	)

References sha1_finish_ctx(), sha1_init_ctx(), and sha1_process_bytes().

Referenced by ODc_Crypto::performDecrypt().

void* sha1_finish_ctx	(	struct sha1_ctx *	ctx,
		void *	resbuf
	)

References sha1_ctx::buffer, sha1_ctx::buflen, fillbuf, sha1_process_block(), sha1_read_ctx(), size, SWAP, and sha1_ctx::total.

Referenced by hmac_sha1(), sha1_buffer(), and sha1_stream().

void sha1_init_ctx

(

struct sha1_ctx *

ctx

)

References sha1_ctx::A, sha1_ctx::B, sha1_ctx::buflen, sha1_ctx::C, sha1_ctx::D, sha1_ctx::E, and sha1_ctx::total.

Referenced by hmac_sha1(), sha1_buffer(), and sha1_stream().

void sha1_process_block	(	const void *	buffer,
		size_t	len,
		struct sha1_ctx *	ctx
	)

References sha1_ctx::A, sha1_ctx::B, sha1_ctx::C, sha1_ctx::D, d, sha1_ctx::E, F1, F2, F3, F4, K1, K2, K3, K4, M, R, SWAP, and sha1_ctx::total.

Referenced by hmac_sha1(), sha1_finish_ctx(), sha1_process_bytes(), and sha1_stream().

void sha1_process_bytes	(	const void *	buffer,
		size_t	len,
		struct sha1_ctx *	ctx
	)

References sha1_ctx::buffer, sha1_ctx::buflen, sha1_process_block(), and UNALIGNED_P.

Referenced by hmac_sha1(), sha1_buffer(), and sha1_stream().

void* sha1_read_ctx	(	const struct sha1_ctx *	ctx,
		void *	resbuf
	)

References sha1_ctx::A, sha1_ctx::B, sha1_ctx::C, sha1_ctx::D, sha1_ctx::E, set_uint32(), and SWAP.

Referenced by sha1_finish_ctx().

int sha1_stream	(	FILE *	stream,
		void *	resblock
	)

References BLOCKSIZE, sha1_finish_ctx(), sha1_init_ctx(), sha1_process_block(), and sha1_process_bytes().

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Variable Documentation

const unsigned char fillbuf[64] = { 0x80, 0 } [static]

Referenced by sha1_finish_ctx().