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aa4611a4d1
This PR sacrifices passing some extra arguments to get rid of the global state. * Haraka needs state in all hash calls, this results in changes to the hash functions specified in `hash.h`. The extra pointers passed would not be necessary for SHA256 or SHAKE256. * SHAKE256 did not have global state, but uniformity in the implementations requires us to pass around the new state context anyway. Otherwise, @joostrijneveld's SPHINCS+ generator doesn't really work anymore). We introduce a new header file called `primitive.h` which defines the required state type for the generic functions. I did not go into replacing _all_ occurrences of state variables by the new `hash_state` macro.
41 lines
1.7 KiB
C
41 lines
1.7 KiB
C
#ifndef SPX_HARAKA_H
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#define SPX_HARAKA_H
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#include <stdint.h>
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#include <stddef.h>
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typedef struct {
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uint64_t tweaked512_rc64[10][8];
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uint32_t tweaked256_rc32[10][8];
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uint32_t tweaked256_rc32_sseed[10][8];
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} harakactx;
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/* Tweak constants with seed */
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void PQCLEAN_SPHINCSHARAKA128SSIMPLE_CLEAN_tweak_constants(
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harakactx *state,
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const unsigned char *pk_seed, const unsigned char *sk_seed,
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unsigned long long seed_length);
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/* Haraka Sponge */
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void PQCLEAN_SPHINCSHARAKA128SSIMPLE_CLEAN_haraka_S_inc_init(uint8_t *s_inc);
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void PQCLEAN_SPHINCSHARAKA128SSIMPLE_CLEAN_haraka_S_inc_absorb(uint8_t *s_inc, const uint8_t *m, size_t mlen, const harakactx *state);
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void PQCLEAN_SPHINCSHARAKA128SSIMPLE_CLEAN_haraka_S_inc_finalize(uint8_t *s_inc);
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void PQCLEAN_SPHINCSHARAKA128SSIMPLE_CLEAN_haraka_S_inc_squeeze(uint8_t *out, size_t outlen, uint8_t *s_inc, const harakactx *state);
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void PQCLEAN_SPHINCSHARAKA128SSIMPLE_CLEAN_haraka_S(
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unsigned char *out, unsigned long long outlen,
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const unsigned char *in, unsigned long long inlen, const harakactx *state);
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/* Applies the 512-bit Haraka permutation to in. */
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void PQCLEAN_SPHINCSHARAKA128SSIMPLE_CLEAN_haraka512_perm(unsigned char *out, const unsigned char *in, const harakactx *state);
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/* Implementation of Haraka-512 */
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void PQCLEAN_SPHINCSHARAKA128SSIMPLE_CLEAN_haraka512(unsigned char *out, const unsigned char *in, const harakactx *state);
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/* Implementation of Haraka-256 */
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void PQCLEAN_SPHINCSHARAKA128SSIMPLE_CLEAN_haraka256(unsigned char *out, const unsigned char *in, const harakactx *state);
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/* Implementation of Haraka-256 using sk.seed constants */
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void PQCLEAN_SPHINCSHARAKA128SSIMPLE_CLEAN_haraka256_sk(unsigned char *out, const unsigned char *in, const harakactx *state);
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#endif
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