d9a9723125
This greatly reduces the memory comsumption of the auth path computation, since it now also uses treehash. It prevents duplicate code by re-using the treehash function. A downside is that it does also pick out the authentication path during key generation (while it is not used), but this cost is negligible.
71 linhas
1.2 KiB
C
71 linhas
1.2 KiB
C
#include <stdint.h>
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void set_layer_addr(uint32_t addr[8], uint32_t layer)
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{
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addr[0] = layer;
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}
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void set_tree_addr(uint32_t addr[8], uint64_t tree)
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{
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addr[1] = (uint32_t) (tree >> 32);
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addr[2] = (uint32_t) tree;
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}
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void set_type(uint32_t addr[8], uint32_t type)
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{
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int i;
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addr[3] = type;
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for (i = 4; i < 8; i++) {
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addr[i] = 0;
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}
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}
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void set_key_and_mask(uint32_t addr[8], uint32_t key_and_mask)
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{
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addr[7] = key_and_mask;
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}
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void copy_subtree_addr(uint32_t out[8], const uint32_t in[8])
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{
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out[0] = in[0];
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out[1] = in[1];
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out[2] = in[2];
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}
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/* These functions are used for OTS addresses. */
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void set_ots_addr(uint32_t addr[8], uint32_t ots)
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{
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addr[4] = ots;
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}
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void set_chain_addr(uint32_t addr[8], uint32_t chain)
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{
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addr[5] = chain;
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}
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void set_hash_addr(uint32_t addr[8], uint32_t hash)
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{
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addr[6] = hash;
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}
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/* This function is used for L-tree addresses. */
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void set_ltree_addr(uint32_t addr[8], uint32_t ltree)
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{
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addr[4] = ltree;
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}
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/* These functions are used for hash tree addresses. */
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void set_tree_height(uint32_t addr[8], uint32_t treeHeight)
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{
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addr[5] = treeHeight;
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}
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void set_tree_index(uint32_t addr[8], uint32_t treeIndex)
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{
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addr[6] = treeIndex;
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}
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