58 lines
1.8 KiB
C
58 lines
1.8 KiB
C
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/* hashfunction_descriptor.h */
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#ifndef HASHFUNCTION_DESCRIPTOR_H_
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#define HASHFUNCTION_DESCRIPTOR_H_
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#include <stdint.h>
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#ifndef VOID_FPT
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#define VOID_FPT
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typedef void(*void_fpt)(void);
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#endif
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typedef void(*hf_init_fpt)(void*);
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typedef void(*hf_nextBlock_fpt)(void*, const void*);
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typedef void(*hf_lastBlock_fpt)(void*, const void*, uint16_t);
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typedef void(*hf_ctx2hash_fpt)(void*, void*);
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typedef void(*hf_free_fpt)(void*);
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typedef void(*hf_mem_fpt)(void*, const void*, uint32_t);
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#define HFDESC_TYPE_HASHFUNCTION 0x02
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typedef struct {
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/** typefield, always 2 for hash functions */
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uint8_t type; /* 2 == hashfunction */
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/** flags, currently unused should be set to zero */
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uint8_t flags;
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/** name, flash pointer to the name string */
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const char* name;
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/** ctxsize_B, size of the hash context in bytes */
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uint16_t ctxsize_B;
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/** blocksize_b, size of an input block in bits */
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uint16_t blocksize_b;
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/** hashsize_b, size of the output hash value in bits */
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uint16_t hashsize_b;
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/** init, function pointer to the algorithms init function */
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hf_init_fpt init;
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/** nextBlock, function pointer to the algorithms nextBlock function */
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hf_nextBlock_fpt nextBlock;
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/** lastBlock, function pointer to the algorithms lastBlock function */
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hf_lastBlock_fpt lastBlock;
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/** ctx2hash, function pointer to the algorithms ctx2hash function */
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hf_ctx2hash_fpt ctx2hash;
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/** free, function pointer to the algorithms free function or NULL if
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* there is no such function */
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hf_free_fpt free;
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/** mem, function pointer to a function which hashes a message in RAM
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* completely or NULL if there is no such function */
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hf_mem_fpt mem;
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} hfdesc_t; /* hashfunction descriptor type */
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typedef struct{
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hfdesc_t* desc_ptr;
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void* ctx;
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} hfgen_ctx_t;
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#endif /* HASHFUNCTION_DESCRIPTOR_H_ */
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