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#ifndef _IPXE_SHA512_H
#define _IPXE_SHA512_H
/** @file
*
* SHA-512 algorithm
*
*/
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#include <stdint.h>
#include <ipxe/crypto.h>
/** SHA-512 number of rounds */
#define SHA512_ROUNDS 80
/** An SHA-512 digest */
struct sha512_digest {
/** Hash output */
uint64_t h[8];
};
/** An SHA-512 data block */
union sha512_block {
/** Raw bytes */
uint8_t byte[128];
/** Raw qwords */
uint64_t qword[16];
/** Final block structure */
struct {
/** Padding */
uint8_t pad[112];
/** High 64 bits of length in bits */
uint64_t len_hi;
/** Low 64 bits of length in bits */
uint64_t len_lo;
} final;
};
/** SHA-512 digest and data block
*
* The order of fields within this structure is designed to minimise
* code size.
*/
struct sha512_digest_data {
/** Digest of data already processed */
struct sha512_digest digest;
/** Accumulated data */
union sha512_block data;
} __attribute__ (( packed ));
/** SHA-512 digest and data block */
union sha512_digest_data_qwords {
/** Digest and data block */
struct sha512_digest_data dd;
/** Raw qwords */
uint64_t qword[ sizeof ( struct sha512_digest_data ) /
sizeof ( uint64_t ) ];
};
/** An SHA-512 context */
struct sha512_context {
/** Amount of accumulated data */
size_t len;
/** Digest size */
size_t digestsize;
/** Digest and accumulated data */
union sha512_digest_data_qwords ddq;
} __attribute__ (( packed ));
/** SHA-512 context size */
#define SHA512_CTX_SIZE sizeof ( struct sha512_context )
/** SHA-512 digest size */
#define SHA512_DIGEST_SIZE sizeof ( struct sha512_digest )
/** SHA-384 digest size */
#define SHA384_DIGEST_SIZE ( SHA512_DIGEST_SIZE * 384 / 512 )
/** SHA-512/256 digest size */
#define SHA512_256_DIGEST_SIZE ( SHA512_DIGEST_SIZE * 256 / 512 )
/** SHA-512/224 digest size */
#define SHA512_224_DIGEST_SIZE ( SHA512_DIGEST_SIZE * 224 / 512 )
extern void sha512_family_init ( struct sha512_context *context,
const struct sha512_digest *init,
size_t digestsize );
extern void sha512_update ( void *ctx, const void *data, size_t len );
extern void sha512_final ( void *ctx, void *out );
extern struct digest_algorithm sha512_algorithm;
extern struct digest_algorithm sha384_algorithm;
extern struct digest_algorithm sha512_256_algorithm;
extern struct digest_algorithm sha512_224_algorithm;
#endif /* IPXE_SHA512_H */
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