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[crypto] Replace SHA-1 implementation

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Replace SHA-1 implementation from AXTLS with a dedicated iPXE
implementation which is around 40% smaller.  This implementation has
been verified using the existing SHA-1 self-tests (including the NIST
SHA-1 test vectors).

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2012-03-04 15:13:54 +00:00
parent 4100edf9d7
commit 76f5939736
4 changed files with 338 additions and 277 deletions
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80
src/include/ipxe/sha1.h
View File

@@ -1,24 +1,80 @@
#ifndef _IPXE_SHA1_H
#define _IPXE_SHA1_H
/** @file
*
* SHA-1 algorithm
*
*/
FILE_LICENCE ( GPL2_OR_LATER );
#include "crypto/axtls/crypto.h"
#include <stdint.h>
#include <ipxe/crypto.h>
struct digest_algorithm;
/** An SHA-1 digest */
struct sha1_digest {
/** Hash output */
uint32_t h[5];
};
#define SHA1_CTX_SIZE sizeof ( SHA1_CTX )
#define SHA1_DIGEST_SIZE SHA1_SIZE
/** An SHA-1 data block */
union sha1_block {
/** Raw bytes */
uint8_t byte[64];
/** Raw dwords */
uint32_t dword[16];
/** Final block structure */
struct {
/** Padding */
uint8_t pad[56];
/** Length in bits */
uint64_t len;
} final;
};
/** SHA-1 digest and data block
*
* The order of fields within this structure is designed to minimise
* code size.
*/
struct sha1_digest_data {
/** Digest of data already processed */
struct sha1_digest digest;
/** Accumulated data */
union sha1_block data;
} __attribute__ (( packed ));
/** SHA-1 digest and data block */
union sha1_digest_data_dwords {
/** Digest and data block */
struct sha1_digest_data dd;
/** Raw dwords */
uint32_t dword[ sizeof ( struct sha1_digest_data ) /
sizeof ( uint32_t ) ];
};
/** An SHA-1 context */
struct sha1_context {
/** Amount of accumulated data */
size_t len;
/** Digest and accumulated data */
union sha1_digest_data_dwords ddd;
} __attribute__ (( packed ));
/** SHA-1 context size */
#define SHA1_CTX_SIZE sizeof ( struct sha1_context )
/** SHA-1 digest size */
#define SHA1_DIGEST_SIZE sizeof ( struct sha1_digest )
extern struct digest_algorithm sha1_algorithm;
/* SHA1-wrapping functions defined in sha1extra.c: */
void prf_sha1 ( const void *key, size_t key_len, const char *label,
const void *data, size_t data_len, void *prf, size_t prf_len );
void pbkdf2_sha1 ( const void *passphrase, size_t pass_len,
const void *salt, size_t salt_len,
int iterations, void *key, size_t key_len );
extern void prf_sha1 ( const void *key, size_t key_len, const char *label,
const void *data, size_t data_len, void *prf,
size_t prf_len );
extern void pbkdf2_sha1 ( const void *passphrase, size_t pass_len,
const void *salt, size_t salt_len,
int iterations, void *key, size_t key_len );
#endif /* _IPXE_SHA1_H */