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Rename hash functions to tweaked hashes

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Since there's a tweak being introduced, this should be reflected
in the name of the functions.
This commit is contained in:
Joost Rijneveld 2017-11-01 15:16:17 +01:00
父節點 fe252b8093
當前提交 daa4e2d6db
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GPG 金鑰 ID: A4FE39CF49CBC553
共有 6 個檔案被更改，包括 22 行新增 和 22 行删除
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12
hash.c
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@ -83,9 +83,9 @@ int hash_message(const xmss_params *params, unsigned char *out,
/**
* We assume the left half is in in[0]...in[n-1]
*/
int hash_h(const xmss_params *params,
unsigned char *out, const unsigned char *in,
const unsigned char *pub_seed, uint32_t addr[8])
int thash_h(const xmss_params *params,
unsigned char *out, const unsigned char *in,
const unsigned char *pub_seed, uint32_t addr[8])
{
unsigned char buf[4 * params->n];
unsigned char bitmask[2 * params->n];
@ -115,9 +115,9 @@ int hash_h(const xmss_params *params,
return core_hash(params, out, buf, 4 * params->n);
}
int hash_f(const xmss_params *params,
unsigned char *out, const unsigned char *in,
const unsigned char *pub_seed, uint32_t addr[8])
int thash_f(const xmss_params *params,
unsigned char *out, const unsigned char *in,
const unsigned char *pub_seed, uint32_t addr[8])
{
unsigned char buf[3 * params->n];
unsigned char bitmask[params->n];

12
hash.h
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@ -15,13 +15,13 @@ int h_msg(const xmss_params *params,
const unsigned char *in, unsigned long long inlen,
const unsigned char *key, const unsigned int keylen);
int hash_h(const xmss_params *params,
unsigned char *out, const unsigned char *in,
const unsigned char *pub_seed, uint32_t addr[8]);
int thash_h(const xmss_params *params,
unsigned char *out, const unsigned char *in,
const unsigned char *pub_seed, uint32_t addr[8]);
int hash_f(const xmss_params *params,
unsigned char *out, const unsigned char *in,
const unsigned char *pub_seed, uint32_t addr[8]);
int thash_f(const xmss_params *params,
unsigned char *out, const unsigned char *in,
const unsigned char *pub_seed, uint32_t addr[8]);
int hash_message(const xmss_params *params, unsigned char *out,
const unsigned char *R, const unsigned char *root,

2
wots.c
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@ -43,7 +43,7 @@ static void gen_chain(const xmss_params *params,
/* Iterate 'steps' calls to the hash function. */
for (i = start; i < (start+steps) && i < params->wots_w; i++) {
set_hash_addr(addr, i);
hash_f(params, out, out, pub_seed, addr);
thash_f(params, out, out, pub_seed, addr);
}
}

8
xmss_commons.c
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@ -68,7 +68,7 @@ void l_tree(const xmss_params *params,
for (i = 0; i < parent_nodes; i++) {
set_tree_index(addr, i);
/* Hashes the nodes at (i*2)*params->n and (i*2)*params->n + 1 */
hash_h(params, wots_pk + i*params->n,
thash_h(params, wots_pk + i*params->n,
wots_pk + (i*2)*params->n, pub_seed, addr);
}
/* If the row contained an odd number of nodes, the last node was not
@ -117,11 +117,11 @@ static void compute_root(const xmss_params *params, unsigned char *root,
/* Pick the right or left neighbor, depending on parity of the node. */
if (leafidx & 1) {
hash_h(params, buffer + params->n, buffer, pub_seed, addr);
thash_h(params, buffer + params->n, buffer, pub_seed, addr);
memcpy(buffer, auth_path, params->n);
}
else {
hash_h(params, buffer, buffer, pub_seed, addr);
thash_h(params, buffer, buffer, pub_seed, addr);
memcpy(buffer + params->n, auth_path, params->n);
}
auth_path += params->n;
@ -131,7 +131,7 @@ static void compute_root(const xmss_params *params, unsigned char *root,
set_tree_height(addr, params->tree_height - 1);
leafidx >>= 1;
set_tree_index(addr, leafidx);
hash_h(params, root, buffer, pub_seed, addr);
thash_h(params, root, buffer, pub_seed, addr);
}
/**

2
xmss_core.c
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@ -69,7 +69,7 @@ static void treehash(const xmss_params *params,
from the fact that we address the hash function calls. */
set_tree_height(node_addr, heights[offset - 1]);
set_tree_index(node_addr, tree_idx);
hash_h(params, stack + (offset-2)*params->n,
thash_h(params, stack + (offset-2)*params->n,
stack + (offset-2)*params->n, pub_seed, node_addr);
offset--;
/* Note that the top-most node is now one layer higher. */

8
xmss_core_fast.c
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@ -269,7 +269,7 @@ static void treehash_init(const xmss_params *params,
}
set_tree_height(node_addr, stacklevels[stackoffset-1]);
set_tree_index(node_addr, (idx >> (stacklevels[stackoffset-1]+1)));
hash_h(params, stack+(stackoffset-2)*params->n, stack+(stackoffset-2)*params->n, pub_seed, node_addr);
thash_h(params, stack+(stackoffset-2)*params->n, stack+(stackoffset-2)*params->n, pub_seed, node_addr);
stacklevels[stackoffset-2]++;
stackoffset--;
}
@ -310,7 +310,7 @@ static void treehash_update(const xmss_params *params,
memcpy(nodebuffer, state->stack + (state->stackoffset-1)*params->n, params->n);
set_tree_height(node_addr, nodeheight);
set_tree_index(node_addr, (treehash->next_idx >> (nodeheight+1)));
hash_h(params, nodebuffer, nodebuffer, pub_seed, node_addr);
thash_h(params, nodebuffer, nodebuffer, pub_seed, node_addr);
nodeheight++;
treehash->stackusage--;
state->stackoffset--;
@ -422,7 +422,7 @@ static char bds_state_update(const xmss_params *params,
}
set_tree_height(node_addr, state->stacklevels[state->stackoffset-1]);
set_tree_index(node_addr, (idx >> (state->stacklevels[state->stackoffset-1]+1)));
hash_h(params, state->stack+(state->stackoffset-2)*params->n, state->stack+(state->stackoffset-2)*params->n, pub_seed, node_addr);
thash_h(params, state->stack+(state->stackoffset-2)*params->n, state->stack+(state->stackoffset-2)*params->n, pub_seed, node_addr);
state->stacklevels[state->stackoffset-2]++;
state->stackoffset--;
@ -482,7 +482,7 @@ static void bds_round(const xmss_params *params,
else {
set_tree_height(node_addr, (tau-1));
set_tree_index(node_addr, leaf_idx >> tau);
hash_h(params, state->auth + tau * params->n, buf, pub_seed, node_addr);
thash_h(params, state->auth + tau * params->n, buf, pub_seed, node_addr);
for (i = 0; i < tau; i++) {
if (i < params->tree_height - params->bds_k) {
memcpy(state->auth + i * params->n, state->treehash[i].node, params->n);