diff options
Diffstat (limited to 'lib/liboqs/src/sig/sphincs/pqclean_sphincs-sha256-256s-simple_clean/hash_sha256.c')
| -rw-r--r-- | lib/liboqs/src/sig/sphincs/pqclean_sphincs-sha256-256s-simple_clean/hash_sha256.c | 162 |
1 files changed, 0 insertions, 162 deletions
diff --git a/lib/liboqs/src/sig/sphincs/pqclean_sphincs-sha256-256s-simple_clean/hash_sha256.c b/lib/liboqs/src/sig/sphincs/pqclean_sphincs-sha256-256s-simple_clean/hash_sha256.c deleted file mode 100644 index 2948d690c..000000000 --- a/lib/liboqs/src/sig/sphincs/pqclean_sphincs-sha256-256s-simple_clean/hash_sha256.c +++ /dev/null @@ -1,162 +0,0 @@ -#include <stdint.h> -#include <string.h> - -#include "address.h" -#include "hash.h" -#include "params.h" -#include "utils.h" - -#include "sha2.h" -#include "sha256.h" - -/* For SHA256, there is no immediate reason to initialize at the start, - so this function is an empty operation. */ -void PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_initialize_hash_function( - hash_state *hash_state_seeded, - const unsigned char *pub_seed, const unsigned char *sk_seed) { - PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_seed_state(hash_state_seeded, pub_seed); - (void)sk_seed; /* Suppress an 'unused parameter' warning. */ -} - -/* Clean up hash state */ -void PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_destroy_hash_function(hash_state *hash_state_seeded) { - sha256_inc_ctx_release(hash_state_seeded); -} - -/* - * Computes PRF(key, addr), given a secret key of PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_N bytes and an address - */ -void PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_prf_addr( - unsigned char *out, const unsigned char *key, const uint32_t addr[8], - const hash_state *hash_state_seeded) { - unsigned char buf[PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_N + PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_SHA256_ADDR_BYTES]; - unsigned char outbuf[PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_SHA256_OUTPUT_BYTES]; - - memcpy(buf, key, PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_N); - PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_compress_address(buf + PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_N, addr); - - sha256(outbuf, buf, PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_N + PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_SHA256_ADDR_BYTES); - memcpy(out, outbuf, PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_N); - - (void)hash_state_seeded; /* Prevent unused parameter warning. */ -} - -/** - * Computes the message-dependent randomness R, using a secret seed as a key - * for HMAC, and an optional randomization value prefixed to the message. - * This requires m to have at least PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_SHA256_BLOCK_BYTES + PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_N space - * available in front of the pointer, i.e. before the message to use for the - * prefix. This is necessary to prevent having to move the message around (and - * allocate memory for it). - */ -void PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_gen_message_random( - unsigned char *R, - const unsigned char *sk_prf, const unsigned char *optrand, - const unsigned char *m, size_t mlen, const hash_state *hash_state_seeded) { - unsigned char buf[PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_SHA256_BLOCK_BYTES + PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_SHA256_OUTPUT_BYTES]; - sha256ctx state; - int i; - - /* This implements HMAC-SHA256 */ - for (i = 0; i < PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_N; i++) { - buf[i] = 0x36 ^ sk_prf[i]; - } - memset(buf + PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_N, 0x36, PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_SHA256_BLOCK_BYTES - PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_N); - - sha256_inc_init(&state); - sha256_inc_blocks(&state, buf, 1); - - memcpy(buf, optrand, PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_N); - - /* If optrand + message cannot fill up an entire block */ - if (PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_N + mlen < PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_SHA256_BLOCK_BYTES) { - memcpy(buf + PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_N, m, mlen); - sha256_inc_finalize(buf + PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_SHA256_BLOCK_BYTES, &state, - buf, mlen + PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_N); - } - /* Otherwise first fill a block, so that finalize only uses the message */ - else { - memcpy(buf + PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_N, m, PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_SHA256_BLOCK_BYTES - PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_N); - sha256_inc_blocks(&state, buf, 1); - - m += PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_SHA256_BLOCK_BYTES - PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_N; - mlen -= PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_SHA256_BLOCK_BYTES - PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_N; - sha256_inc_finalize(buf + PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_SHA256_BLOCK_BYTES, &state, m, mlen); - } - - for (i = 0; i < PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_N; i++) { - buf[i] = 0x5c ^ sk_prf[i]; - } - memset(buf + PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_N, 0x5c, PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_SHA256_BLOCK_BYTES - PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_N); - - sha256(buf, buf, PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_SHA256_BLOCK_BYTES + PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_SHA256_OUTPUT_BYTES); - memcpy(R, buf, PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_N); - - (void)hash_state_seeded; /* Prevent unused parameter warning. */ -} - -/** - * Computes the message hash using R, the public key, and the message. - * Outputs the message digest and the index of the leaf. The index is split in - * the tree index and the leaf index, for convenient copying to an address. - */ -void PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_hash_message( - unsigned char *digest, uint64_t *tree, uint32_t *leaf_idx, - const unsigned char *R, const unsigned char *pk, - const unsigned char *m, size_t mlen, - const hash_state *hash_state_seeded) { -#define PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_TREE_BITS (PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_TREE_HEIGHT * (PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_D - 1)) -#define PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_TREE_BYTES ((PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_TREE_BITS + 7) / 8) -#define PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_LEAF_BITS PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_TREE_HEIGHT -#define PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_LEAF_BYTES ((PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_LEAF_BITS + 7) / 8) -#define PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_DGST_BYTES (PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_FORS_MSG_BYTES + PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_TREE_BYTES + PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_LEAF_BYTES) - - unsigned char seed[PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_SHA256_OUTPUT_BYTES + 4]; - - /* Round to nearest multiple of PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_SHA256_BLOCK_BYTES */ -#define PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_INBLOCKS (((PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_N + PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_PK_BYTES + PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_SHA256_BLOCK_BYTES - 1) & \ - -PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_SHA256_BLOCK_BYTES) / PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_SHA256_BLOCK_BYTES) - unsigned char inbuf[PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_INBLOCKS * PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_SHA256_BLOCK_BYTES]; - - unsigned char buf[PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_DGST_BYTES]; - unsigned char *bufp = buf; - sha256ctx state; - - sha256_inc_init(&state); - - memcpy(inbuf, R, PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_N); - memcpy(inbuf + PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_N, pk, PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_PK_BYTES); - - /* If R + pk + message cannot fill up an entire block */ - if (PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_N + PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_PK_BYTES + mlen < PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_INBLOCKS * PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_SHA256_BLOCK_BYTES) { - memcpy(inbuf + PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_N + PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_PK_BYTES, m, mlen); - sha256_inc_finalize(seed, &state, inbuf, PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_N + PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_PK_BYTES + mlen); - } - /* Otherwise first fill a block, so that finalize only uses the message */ - else { - memcpy(inbuf + PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_N + PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_PK_BYTES, m, - PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_INBLOCKS * PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_SHA256_BLOCK_BYTES - PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_N - PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_PK_BYTES); - sha256_inc_blocks(&state, inbuf, PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_INBLOCKS); - - m += PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_INBLOCKS * PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_SHA256_BLOCK_BYTES - PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_N - PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_PK_BYTES; - mlen -= PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_INBLOCKS * PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_SHA256_BLOCK_BYTES - PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_N - PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_PK_BYTES; - sha256_inc_finalize(seed, &state, m, mlen); - } - - /* By doing this in two steps, we prevent hashing the message twice; - otherwise each iteration in MGF1 would hash the message again. */ - PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_mgf1(bufp, PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_DGST_BYTES, seed, PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_SHA256_OUTPUT_BYTES); - - memcpy(digest, bufp, PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_FORS_MSG_BYTES); - bufp += PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_FORS_MSG_BYTES; - - *tree = PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_bytes_to_ull(bufp, PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_TREE_BYTES); - *tree &= (~(uint64_t)0) >> (64 - PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_TREE_BITS); - bufp += PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_TREE_BYTES; - - *leaf_idx = (uint32_t)PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_bytes_to_ull( - bufp, PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_LEAF_BYTES); - *leaf_idx &= (~(uint32_t)0) >> (32 - PQCLEAN_SPHINCSSHA256256SSIMPLE_CLEAN_LEAF_BITS); - - (void)hash_state_seeded; /* Prevent unused parameter warning. */ -} |