87 lines
1.9 KiB
C
87 lines
1.9 KiB
C
#ifndef _IPXE_SHA512_H
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#define _IPXE_SHA512_H
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/** @file
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*
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* SHA-512 algorithm
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*
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*/
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FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
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#include <stdint.h>
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#include <ipxe/crypto.h>
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/** SHA-512 number of rounds */
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#define SHA512_ROUNDS 80
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/** An SHA-512 digest */
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struct sha512_digest {
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/** Hash output */
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uint64_t h[8];
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};
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/** An SHA-512 data block */
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union sha512_block {
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/** Raw bytes */
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uint8_t byte[128];
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/** Raw qwords */
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uint64_t qword[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[112];
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/** High 64 bits of length in bits */
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uint64_t len_hi;
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/** Low 64 bits of length in bits */
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uint64_t len_lo;
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} final;
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};
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/** SHA-512 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 sha512_digest_data {
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/** Digest of data already processed */
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struct sha512_digest digest;
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/** Accumulated data */
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union sha512_block data;
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} __attribute__ (( packed ));
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/** SHA-512 digest and data block */
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union sha512_digest_data_qwords {
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/** Digest and data block */
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struct sha512_digest_data dd;
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/** Raw qwords */
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uint64_t qword[ sizeof ( struct sha512_digest_data ) /
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sizeof ( uint64_t ) ];
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};
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/** An SHA-512 context */
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struct sha512_context {
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/** Amount of accumulated data */
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size_t len;
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/** Digest size */
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size_t digestsize;
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/** Digest and accumulated data */
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union sha512_digest_data_qwords ddq;
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} __attribute__ (( packed ));
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/** SHA-512 context size */
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#define SHA512_CTX_SIZE sizeof ( struct sha512_context )
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/** SHA-512 digest size */
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#define SHA512_DIGEST_SIZE sizeof ( struct sha512_digest )
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extern void sha512_family_init ( struct sha512_context *context,
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const struct sha512_digest *init,
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size_t digestsize );
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extern void sha512_update ( void *ctx, const void *data, size_t len );
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extern void sha512_final ( void *ctx, void *out );
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extern struct digest_algorithm sha512_algorithm;
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#endif /* IPXE_SHA512_H */
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