sha1.c File Reference

Go to the source code of this file.

Defines
#define	SHA1HANDSOFF   1 /* Copies data before messing with it. */
#define	rol(value, bits)   (((value) << (bits)) | ((value) >> (32 - (bits))))
#define	blk0(i)
#define	blk(i)
#define	R0(v, w, x, y, z, i)   z+=((w&(x^y))^y)+blk0(i)+0x5A827999+rol(v,5);w=rol(w,30);
#define	R1(v, w, x, y, z, i)   z+=((w&(x^y))^y)+blk(i)+0x5A827999+rol(v,5);w=rol(w,30);
#define	R2(v, w, x, y, z, i)   z+=(w^x^y)+blk(i)+0x6ED9EBA1+rol(v,5);w=rol(w,30);
#define	R3(v, w, x, y, z, i)   z+=(((w|x)&y)|(w&x))+blk(i)+0x8F1BBCDC+rol(v,5);w=rol(w,30);
#define	R4(v, w, x, y, z, i)   z+=(w^x^y)+blk(i)+0xCA62C1D6+rol(v,5);w=rol(w,30);
Functions
void	ldns_sha1_transform (uint32_t state[5], const unsigned char buffer[64])
void	ldns_sha1_init (ldns_sha1_ctx *context)
void	ldns_sha1_update (ldns_sha1_ctx *context, const unsigned char *data, unsigned int len)
void	ldns_sha1_final (unsigned char digest[20], ldns_sha1_ctx *context)
unsigned char *	ldns_sha1 (unsigned char *data, unsigned int data_len, unsigned char *digest)
	Convenience function to digest a fixed block of data at once.

---

Define Documentation

#define SHA1HANDSOFF   1 /* Copies data before messing with it. */

Definition at line 23 of file sha1.c.

#define rol	(		value,
			bits
	)		(((value) << (bits)) | ((value) >> (32 - (bits))))

Definition at line 24 of file sha1.c.

#define blk0

(

i

)

Value:

(block->l[i] = (rol(block->l[i],24)&0xFF00FF00) \
    |(rol(block->l[i],8)&0x00FF00FF))

Definition at line 29 of file sha1.c.

#define blk

(

i

)

Value:

(block->l[i&15] = rol(block->l[(i+13)&15]^block->l[(i+8)&15] \
    ^block->l[(i+2)&15]^block->l[i&15],1))

Definition at line 34 of file sha1.c.

#define R0	(		v,
			w,
			x,
			y,
			z,
			i
	)		z+=((w&(x^y))^y)+blk0(i)+0x5A827999+rol(v,5);w=rol(w,30);

Definition at line 38 of file sha1.c.

#define R1	(		v,
			w,
			x,
			y,
			z,
			i
	)		z+=((w&(x^y))^y)+blk(i)+0x5A827999+rol(v,5);w=rol(w,30);

Definition at line 39 of file sha1.c.

#define R2	(		v,
			w,
			x,
			y,
			z,
			i
	)		z+=(w^x^y)+blk(i)+0x6ED9EBA1+rol(v,5);w=rol(w,30);

Definition at line 40 of file sha1.c.

#define R3	(		v,
			w,
			x,
			y,
			z,
			i
	)		z+=(((w|x)&y)|(w&x))+blk(i)+0x8F1BBCDC+rol(v,5);w=rol(w,30);

Definition at line 41 of file sha1.c.

#define R4	(		v,
			w,
			x,
			y,
			z,
			i
	)		z+=(w^x^y)+blk(i)+0xCA62C1D6+rol(v,5);w=rol(w,30);

Definition at line 42 of file sha1.c.

---

Function Documentation

void ldns_sha1_transform	(	uint32_t	state[5],
		const unsigned char	buffer[64]
	)

Definition at line 47 of file sha1.c.

References LDNS_SHA1_BLOCK_LENGTH, R0, R1, R2, R3, and R4.

void ldns_sha1_init

(

ldns_sha1_ctx *

context

)

Definition at line 106 of file sha1.c.

References ldns_sha1_ctx::count, and ldns_sha1_ctx::state.

void ldns_sha1_update	(	ldns_sha1_ctx *	context,
		const unsigned char *	data,
		unsigned int	len
	)

Definition at line 121 of file sha1.c.

References ldns_sha1_ctx::buffer, ldns_sha1_ctx::count, ldns_sha1_transform(), and ldns_sha1_ctx::state.

void ldns_sha1_final	(	unsigned char	digest[20],
		ldns_sha1_ctx *	context
	)

Definition at line 144 of file sha1.c.

References ldns_sha1_ctx::buffer, ldns_sha1_ctx::count, LDNS_SHA1_DIGEST_LENGTH, ldns_sha1_transform(), ldns_sha1_update(), and ldns_sha1_ctx::state.

unsigned char* ldns_sha1	(	unsigned char *	data,
		unsigned int	data_len,
		unsigned char *	digest
	)

Convenience function to digest a fixed block of data at once.

Parameters:

[in]	data	the data to digest
[in]	data_len	the length of data in bytes
[out]	digest	the length of data in bytes This pointer MUST have LDNS_SHA1_DIGEST_LENGTH bytes available

Returns:

the SHA1 digest of the given data

Definition at line 170 of file sha1.c.

References ldns_sha1_final(), ldns_sha1_init(), and ldns_sha1_update().