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fba2310562
Replace MD5 implementation with one which is around 20% smaller. This implementation has been verified using the existing MD5 self-tests. Signed-off-by: Michael Brown <mcb30@ipxe.org>
74 lines
1.4 KiB
C
74 lines
1.4 KiB
C
#ifndef _IPXE_MD5_H
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#define _IPXE_MD5_H
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/** @file
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*
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* MD5 algorithm
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*
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*/
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FILE_LICENCE ( GPL2_OR_LATER );
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#include <stdint.h>
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#include <ipxe/crypto.h>
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/** An MD5 digest */
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struct md5_digest {
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/** Hash output */
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uint32_t h[4];
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};
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/** An MD5 data block */
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union md5_block {
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/** Raw bytes */
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uint8_t byte[64];
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/** Raw dwords */
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uint32_t dword[16];
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/** Final block structure */
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struct {
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/** Padding */
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uint8_t pad[56];
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/** Length in bits */
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uint64_t len;
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} final;
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};
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/** MD5 digest and data block
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*
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* The order of fields within this structure is designed to minimise
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* code size.
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*/
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struct md5_digest_data {
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/** Digest of data already processed */
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struct md5_digest digest;
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/** Accumulated data */
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union md5_block data;
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} __attribute__ (( packed ));
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/** MD5 digest and data block */
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union md5_digest_data_dwords {
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/** Digest and data block */
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struct md5_digest_data dd;
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/** Raw dwords */
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uint32_t dword[ sizeof ( struct md5_digest_data ) /
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sizeof ( uint32_t ) ];
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};
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/** An MD5 context */
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struct md5_context {
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/** Amount of accumulated data */
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size_t len;
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/** Digest and accumulated data */
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union md5_digest_data_dwords ddd;
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} __attribute__ (( packed ));
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/** MD5 context size */
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#define MD5_CTX_SIZE sizeof ( struct md5_context )
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/** MD5 digest size */
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#define MD5_DIGEST_SIZE sizeof ( struct md5_digest )
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extern struct digest_algorithm md5_algorithm;
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#endif /* _IPXE_MD5_H */
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