Store BDS state in passable struct, not in globals
This commit is contained in:
Joost Rijneveld
bovenliggende
a33aef699c
commit
a075747462
@ -1,10 +1,11 @@
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include "../xmss_fast.h"
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#define MLEN 3491
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#define SIGNATURES 50
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#define SIGNATURES 256
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unsigned char sk[100];
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@ -21,10 +22,26 @@ int main()
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int n = 32;
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int h = 8;
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int w = 16;
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int k = 2;
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xmss_params p;
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xmss_params *params = &p;
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xmss_set_params(params, m, n, h, w);
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xmss_set_params(params, m, n, h, w, k);
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// TODO should we hide this into xmss_fast.c and just allocate a large enough chunk of memory here?
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unsigned char stack[(h-k-1)*n];
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unsigned int stackoffset = 0;
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unsigned char stacklevels[h-k-1];
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unsigned char auth[h*n];
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unsigned char keep[(h >> 1)*n];
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treehash_inst treehash[h-k];
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unsigned char retain[((1 << k) - k - 1)*n];
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bds_state s;
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bds_state *state = &s;
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for(i=0;i<h-k;i++)
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treehash[i].node = (unsigned char *)malloc(n);
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xmss_set_bds_state(state, stack, stackoffset, stacklevels, auth, keep, treehash, retain);
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unsigned long long signature_length = 4+m+params->wots_par.keysize+h*n;
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unsigned char mo[MLEN+signature_length];
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unsigned char sm[MLEN+signature_length];
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@ -33,7 +50,7 @@ int main()
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for(i=0;i<MLEN;i++) mi[i] = fgetc(urandom);
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printf("keypair\n");
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xmss_keypair(pk, sk, params);
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xmss_keypair(pk, sk, state, params);
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// check pub_seed in SK
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for(i=0;i<n;i++)
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{
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@ -46,7 +63,7 @@ int main()
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for(i=0;i<SIGNATURES;i++){
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printf("sign\n");
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xmss_sign(sk, sm, &smlen, mi, MLEN, params);
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xmss_sign(sk, state, sm, &smlen, mi, MLEN, params);
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idx = ((unsigned long)sm[0] << 24) | ((unsigned long)sm[1] << 16) | ((unsigned long)sm[2] << 8) | sm[3];
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printf("\nidx = %lu\n",idx);
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@ -80,6 +97,8 @@ int main()
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printf("%llu\n", mlen+1);
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}
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for(i=0;i<h-k;i++)
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free(treehash[i].node);
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fclose(urandom);
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return 0;
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}
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150
xmss_fast.c
150
xmss_fast.c
@ -4,7 +4,7 @@ Andreas Hülsing
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Public domain.
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*/
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#include "xmss.h"
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#include "xmss_fast.h"
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#include <stdlib.h>
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#include <string.h>
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#include <stdint.h>
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@ -78,30 +78,6 @@ Public domain.
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a[13] = (v >> 14) & 255;\
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a[12] = (a[12] & 252) | ((v >> 22) & 3);}
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// TODO these defines still need to be merged into the parameter selection
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#define H 8
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#define K 2
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#define N 32
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typedef struct{
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int h;
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int next_idx;
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unsigned int stackusage;
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unsigned char completed;
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unsigned char node[N];
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} treehash_inst;
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// TODO these data structures need to be non-global (especially for xmss_mt)
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unsigned char STACK[(H-K-1)*N];
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unsigned int STACKOFFSET = 0;
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unsigned char STACKLEVELS[H-K-1];
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unsigned char AUTH[H*N];
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unsigned char KEEP[(H >> 1)*N];
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treehash_inst TREEHASH[H-K];
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unsigned char RETAIN[((1 << K) - K - 1) * N];
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/**
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* Used for pseudorandom keygeneration,
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* generates the seed for the WOTS keypair at address addr
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@ -117,24 +93,41 @@ static void get_seed(unsigned char seed[32], const unsigned char *sk_seed, unsig
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/**
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* Initialize xmss params struct
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* parameter names are the same as in the draft
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* parameter k is K as used in the BDS algorithm
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*/
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void xmss_set_params(xmss_params *params, int m, int n, int h, int w)
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void xmss_set_params(xmss_params *params, int m, int n, int h, int w, int k)
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{
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params->h = h;
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params->m = m;
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params->n = n;
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params->k = k;
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wots_params wots_par;
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wots_set_params(&wots_par, m, n, w);
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params->wots_par = wots_par;
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}
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/**
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* Initialize BDS state struct
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* parameter names are the same as used in the description of the BDS traversal
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*/
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void xmss_set_bds_state(bds_state *state, unsigned char *stack, int stackoffset, unsigned char *stacklevels, unsigned char *auth, unsigned char *keep, treehash_inst *treehash, unsigned char *retain)
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{
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state->stack = stack;
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state->stackoffset = stackoffset;
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state->stacklevels = stacklevels;
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state->auth = auth;
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state->keep = keep;
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state->treehash = treehash;
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state->retain = retain;
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}
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/**
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* Initialize xmssmt_params struct
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* parameter names are the same as in the draft
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*
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* Especially h is the total tree height, i.e. the XMSS trees have height h/d
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*/
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void xmssmt_set_params(xmssmt_params *params, int m, int n, int h, int d, int w)
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void xmssmt_set_params(xmssmt_params *params, int m, int n, int h, int d, int w, int k)
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{
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if(h % d){
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fprintf(stderr, "d must devide h without remainder!\n");
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@ -146,7 +139,7 @@ void xmssmt_set_params(xmssmt_params *params, int m, int n, int h, int d, int w)
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params->n = n;
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params->index_len = (h + 7) / 8;
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xmss_params xmss_par;
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xmss_set_params(&xmss_par, m, n, (h/d), w);
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xmss_set_params(&xmss_par, m, n, (h/d), w, k);
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params->xmss_par = xmss_par;
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}
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@ -207,11 +200,11 @@ static void gen_leaf_wots(unsigned char *leaf, const unsigned char *sk_seed, con
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l_tree(leaf, pk, params, pub_seed, ltree_addr);
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}
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static int treehash_minheight_on_stack(const xmss_params *params, const treehash_inst *treehash) {
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static int treehash_minheight_on_stack(bds_state* state, const xmss_params *params, const treehash_inst *treehash) {
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int r = params->h, i;
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for (i = 0; i < treehash->stackusage; i++) {
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if (STACKLEVELS[STACKOFFSET - i - 1] < r) {
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r = STACKLEVELS[STACKOFFSET - i - 1];
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if (state->stacklevels[state->stackoffset - i - 1] < r) {
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r = state->stacklevels[state->stackoffset - i - 1];
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}
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}
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return r;
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@ -222,11 +215,12 @@ static int treehash_minheight_on_stack(const xmss_params *params, const treehash
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* Currently only used for key generation.
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*
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*/
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static void treehash_setup(unsigned char *node, int height, int index, const unsigned char *sk_seed, const xmss_params *params, const unsigned char *pub_seed, const unsigned char addr[16])
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static void treehash_setup(unsigned char *node, int height, int index, bds_state *state, const unsigned char *sk_seed, const xmss_params *params, const unsigned char *pub_seed, const unsigned char addr[16])
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{
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unsigned int idx = index;
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unsigned int n = params->n;
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unsigned int h = params->h;
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unsigned int k = params->k;
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// use three different addresses because at this point we use all three formats in parallel
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unsigned char ots_addr[16];
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unsigned char ltree_addr[16];
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@ -249,10 +243,10 @@ static void treehash_setup(unsigned char *node, int height, int index, const uns
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lastnode = idx+(1<<height);
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for(i = 0; i < H-K; i++) {
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TREEHASH[i].h = i;
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TREEHASH[i].completed = 1;
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TREEHASH[i].stackusage = 0;
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for(i = 0; i < h-k; i++) {
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state->treehash[i].h = i;
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state->treehash[i].completed = 1;
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state->treehash[i].stackusage = 0;
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}
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i = 0;
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@ -263,21 +257,21 @@ static void treehash_setup(unsigned char *node, int height, int index, const uns
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gen_leaf_wots(stack+stackoffset*n,sk_seed,params, pub_seed, ltree_addr, ots_addr);
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stacklevels[stackoffset] = 0;
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stackoffset++;
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if (H - K > 0 && i == 3) {
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memcpy(TREEHASH[0].node, stack+stackoffset*n, n);
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if (h - k > 0 && i == 3) {
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memcpy(state->treehash[0].node, stack+stackoffset*n, n);
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}
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while(stackoffset>1 && stacklevels[stackoffset-1] == stacklevels[stackoffset-2])
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{
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nodeh = stacklevels[stackoffset-1];
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if (i >> nodeh == 1) {
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memcpy(AUTH + nodeh*n, stack+(stackoffset-1)*n, n);
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memcpy(state->auth + nodeh*n, stack+(stackoffset-1)*n, n);
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}
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else {
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if (nodeh < H - K && i >> nodeh == 3) {
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memcpy(TREEHASH[nodeh].node, stack+(stackoffset-1)*n, n);
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if (nodeh < h - k && i >> nodeh == 3) {
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memcpy(state->treehash[nodeh].node, stack+(stackoffset-1)*n, n);
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}
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else if (nodeh >= H - K) {
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memcpy(RETAIN + ((1 << (H - 1 - nodeh)) + nodeh - H + (((i >> nodeh) - 3) >> 1)) * n, stack+(stackoffset-1)*n, n);
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else if (nodeh >= h - k) {
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memcpy(state->retain + ((1 << (h - 1 - nodeh)) + nodeh - h + (((i >> nodeh) - 3) >> 1)) * n, stack+(stackoffset-1)*n, n);
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}
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}
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SET_NODE_TREE_HEIGHT(node_addr,stacklevels[stackoffset-1]);
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@ -294,7 +288,7 @@ static void treehash_setup(unsigned char *node, int height, int index, const uns
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node[i] = stack[i];
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}
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static void treehash_update(treehash_inst *treehash, const unsigned char *sk_seed, const xmss_params *params, const unsigned char *pub_seed, const unsigned char addr[16]) {
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static void treehash_update(treehash_inst *treehash, bds_state *state, const unsigned char *sk_seed, const xmss_params *params, const unsigned char *pub_seed, const unsigned char addr[16]) {
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int n = params->n;
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unsigned char ots_addr[16];
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@ -316,25 +310,25 @@ static void treehash_update(treehash_inst *treehash, const unsigned char *sk_see
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unsigned char nodebuffer[2 * n];
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unsigned int nodeheight = 0;
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gen_leaf_wots(nodebuffer, sk_seed, params, pub_seed, ltree_addr, ots_addr);
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while (treehash->stackusage > 0 && STACKLEVELS[STACKOFFSET-1] == nodeheight) {
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while (treehash->stackusage > 0 && state->stacklevels[state->stackoffset-1] == nodeheight) {
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memcpy(nodebuffer + n, nodebuffer, n);
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memcpy(nodebuffer, STACK + (STACKOFFSET-1)*n, n);
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memcpy(nodebuffer, state->stack + (state->stackoffset-1)*n, n);
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SET_NODE_TREE_HEIGHT(node_addr, nodeheight);
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SET_NODE_TREE_INDEX(node_addr, (treehash->next_idx >> (nodeheight+1)));
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hash_2n_n(nodebuffer, nodebuffer, pub_seed, node_addr, n);
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nodeheight++;
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treehash->stackusage--;
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STACKOFFSET--;
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state->stackoffset--;
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}
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if (nodeheight == treehash->h) { // this also implies stackusage == 0
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memcpy(treehash->node, nodebuffer, n);
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treehash->completed = 1;
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}
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else {
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memcpy(STACK + STACKOFFSET*n, nodebuffer, n);
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memcpy(state->stack + state->stackoffset*n, nodebuffer, n);
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treehash->stackusage++;
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STACKLEVELS[STACKOFFSET] = nodeheight;
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STACKOFFSET++;
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state->stacklevels[state->stackoffset] = nodeheight;
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state->stackoffset++;
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treehash->next_idx++;
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}
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}
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@ -397,15 +391,15 @@ static void validate_authpath(unsigned char *root, const unsigned char *leaf, un
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* next leaf node, using the algorithm described by Buchmann, Dahmen and Szydlo
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* in "Post Quantum Cryptography", Springer 2009.
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*/
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static void compute_authpath_wots_fast(unsigned char *root, unsigned char *authpath, unsigned long leaf_idx, const unsigned char *sk_seed, const xmss_params *params, unsigned char *pub_seed, unsigned char addr[16])
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static void compute_authpath_wots_fast(unsigned char *root, unsigned char *authpath, unsigned long leaf_idx, bds_state *state, const unsigned char *sk_seed, const xmss_params *params, unsigned char *pub_seed, unsigned char addr[16])
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{
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unsigned int i, j;
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int n = params->n;
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int h = params->h;
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int k = K; // TODO retrieve this from params instead
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int k = params->k;
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// the auth path was already computed during the previous round
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memcpy(authpath, AUTH, h*n);
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memcpy(authpath, state->auth, h*n);
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// TODO but we don't have the root handy yet.
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// memcpy(root, ???, n);
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@ -436,39 +430,39 @@ static void compute_authpath_wots_fast(unsigned char *root, unsigned char *authp
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}
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if (tau > 0) {
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memcpy(buf, AUTH + (tau-1) * n, n);
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// we need to do this before refreshing KEEP to prevent overwriting
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memcpy(buf + n, KEEP + ((tau-1) >> 1) * n, n);
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memcpy(buf, state->auth + (tau-1) * n, n);
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// we need to do this before refreshing state->keep to prevent overwriting
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memcpy(buf + n, state->keep + ((tau-1) >> 1) * n, n);
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}
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if (!((leaf_idx >> (tau + 1)) & 1) && (tau < h - 1)) {
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memcpy(KEEP + (tau >> 1)*n, AUTH + tau*n, n);
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memcpy(state->keep + (tau >> 1)*n, state->auth + tau*n, n);
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}
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if (tau == 0) {
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SET_LTREE_ADDRESS(ltree_addr,leaf_idx);
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SET_OTS_ADDRESS(ots_addr,leaf_idx);
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gen_leaf_wots(AUTH, sk_seed, params, pub_seed, ltree_addr, ots_addr);
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gen_leaf_wots(state->auth, sk_seed, params, pub_seed, ltree_addr, ots_addr);
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}
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else {
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SET_NODE_TREE_HEIGHT(node_addr, (tau-1));
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SET_NODE_TREE_INDEX(node_addr, leaf_idx >> tau);
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hash_2n_n(AUTH + tau * n, buf, pub_seed, node_addr, n);
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hash_2n_n(state->auth + tau * n, buf, pub_seed, node_addr, n);
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for (i = 0; i < tau; i++) {
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if (i < h - k) {
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memcpy(AUTH + i * n, TREEHASH[i].node, n);
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memcpy(state->auth + i * n, state->treehash[i].node, n);
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}
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else {
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offset = (1 << (h - 1 - i)) + i - h;
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rowidx = ((leaf_idx >> i) - 1) >> 1;
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memcpy(AUTH + i * n, RETAIN + (offset + rowidx) * n, n);
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memcpy(state->auth + i * n, state->retain + (offset + rowidx) * n, n);
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}
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}
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for (i = 0; i < ((tau < h - k) ? tau : (h - k)); i++) {
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startidx = leaf_idx + 1 + 3 * (1 << i);
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if (startidx < 1 << h) {
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TREEHASH[i].h = i;
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TREEHASH[i].next_idx = startidx;
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TREEHASH[i].completed = 0;
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state->treehash[i].h = i;
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state->treehash[i].next_idx = startidx;
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state->treehash[i].completed = 0;
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}
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}
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}
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@ -477,14 +471,14 @@ static void compute_authpath_wots_fast(unsigned char *root, unsigned char *authp
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l_min = h;
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level = h - k;
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for (j = 0; j < h - k; j++) {
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if (TREEHASH[j].completed) {
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if (state->treehash[j].completed) {
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low = h;
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}
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else if (TREEHASH[j].stackusage == 0) {
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else if (state->treehash[j].stackusage == 0) {
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low = j;
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}
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else {
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low = treehash_minheight_on_stack(params, &TREEHASH[j]);
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low = treehash_minheight_on_stack(state, params, &(state->treehash[j]));
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}
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if (low < l_min) {
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level = j;
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@ -492,7 +486,7 @@ static void compute_authpath_wots_fast(unsigned char *root, unsigned char *authp
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}
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}
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if (level != h - k) {
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treehash_update(&TREEHASH[level], sk_seed, params, pub_seed, addr);
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treehash_update(&(state->treehash[level]), state, sk_seed, params, pub_seed, addr);
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}
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}
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}
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@ -502,7 +496,7 @@ static void compute_authpath_wots_fast(unsigned char *root, unsigned char *authp
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* Format sk: [(32bit) idx || SK_SEED || SK_PRF || PUB_SEED]
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* Format pk: [root || PUB_SEED] omitting algo oid.
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*/
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int xmss_keypair(unsigned char *pk, unsigned char *sk, xmss_params *params)
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int xmss_keypair(unsigned char *pk, unsigned char *sk, bds_state *state, xmss_params *params)
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{
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unsigned int n = params->n;
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unsigned int m = params->m;
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@ -518,7 +512,7 @@ int xmss_keypair(unsigned char *pk, unsigned char *sk, xmss_params *params)
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unsigned char addr[16] = {0,0,0,0};
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// Compute root
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treehash_setup(pk, params->h, 0, sk+4, params, sk+4+n+m, addr);
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||||
treehash_setup(pk, params->h, 0, state, sk+4, params, sk+4+n+m, addr);
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -529,7 +523,7 @@ int xmss_keypair(unsigned char *pk, unsigned char *sk, xmss_params *params)
|
||||
* 2. an updated secret key!
|
||||
*
|
||||
*/
|
||||
int xmss_sign(unsigned char *sk, unsigned char *sig_msg, unsigned long long *sig_msg_len, const unsigned char *msg, unsigned long long msglen, const xmss_params *params)
|
||||
int xmss_sign(unsigned char *sk, bds_state *state, unsigned char *sig_msg, unsigned long long *sig_msg_len, const unsigned char *msg, unsigned long long msglen, const xmss_params *params)
|
||||
{
|
||||
unsigned int n = params->n;
|
||||
unsigned int m = params->m;
|
||||
@ -605,7 +599,7 @@ int xmss_sign(unsigned char *sk, unsigned char *sig_msg, unsigned long long *sig
|
||||
sig_msg += params->wots_par.keysize;
|
||||
*sig_msg_len += params->wots_par.keysize;
|
||||
|
||||
compute_authpath_wots_fast(root, sig_msg, idx, sk_seed, params, pub_seed, ots_addr);
|
||||
compute_authpath_wots_fast(root, sig_msg, idx, state, sk_seed, params, pub_seed, ots_addr);
|
||||
sig_msg += params->h*n;
|
||||
*sig_msg_len += params->h*n;
|
||||
|
||||
@ -711,7 +705,7 @@ fail:
|
||||
* Format sk: [(ceil(h/8) bit) idx || SK_SEED || SK_PRF || PUB_SEED]
|
||||
* Format pk: [root || PUB_SEED] omitting algo oid.
|
||||
*/
|
||||
int xmssmt_keypair(unsigned char *pk, unsigned char *sk, xmssmt_params *params)
|
||||
int xmssmt_keypair(unsigned char *pk, unsigned char *sk, bds_state *state, xmssmt_params *params)
|
||||
{
|
||||
unsigned int n = params->n;
|
||||
unsigned int m = params->m;
|
||||
@ -730,7 +724,7 @@ int xmssmt_keypair(unsigned char *pk, unsigned char *sk, xmssmt_params *params)
|
||||
SET_LAYER_ADDRESS(addr, (params->d-1));
|
||||
|
||||
// Compute root
|
||||
treehash_setup(pk, params->xmss_par.h, 0, sk+params->index_len, &(params->xmss_par), pk+n, addr);
|
||||
treehash_setup(pk, params->xmss_par.h, 0, state, sk+params->index_len, &(params->xmss_par), pk+n, addr);
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -741,7 +735,7 @@ int xmssmt_keypair(unsigned char *pk, unsigned char *sk, xmssmt_params *params)
|
||||
* 2. an updated secret key!
|
||||
*
|
||||
*/
|
||||
int xmssmt_sign(unsigned char *sk, unsigned char *sig_msg, unsigned long long *sig_msg_len, const unsigned char *msg, unsigned long long msglen, const xmssmt_params *params)
|
||||
int xmssmt_sign(unsigned char *sk, bds_state *state, unsigned char *sig_msg, unsigned long long *sig_msg_len, const unsigned char *msg, unsigned long long msglen, const xmssmt_params *params)
|
||||
{
|
||||
unsigned int n = params->n;
|
||||
unsigned int m = params->m;
|
||||
@ -830,7 +824,7 @@ int xmssmt_sign(unsigned char *sk, unsigned char *sig_msg, unsigned long long *s
|
||||
sig_msg += params->xmss_par.wots_par.keysize;
|
||||
*sig_msg_len += params->xmss_par.wots_par.keysize;
|
||||
|
||||
compute_authpath_wots_fast(root, sig_msg, idx_leaf, sk_seed, &(params->xmss_par), pub_seed, ots_addr);
|
||||
compute_authpath_wots_fast(root, sig_msg, idx_leaf, state, sk_seed, &(params->xmss_par), pub_seed, ots_addr);
|
||||
sig_msg += tree_h*n;
|
||||
*sig_msg_len += tree_h*n;
|
||||
|
||||
@ -853,7 +847,7 @@ int xmssmt_sign(unsigned char *sk, unsigned char *sig_msg, unsigned long long *s
|
||||
sig_msg += params->xmss_par.wots_par.keysize;
|
||||
*sig_msg_len += params->xmss_par.wots_par.keysize;
|
||||
|
||||
compute_authpath_wots_fast(root, sig_msg, idx_leaf, sk_seed, &(params->xmss_par), pub_seed, ots_addr);
|
||||
compute_authpath_wots_fast(root, sig_msg, idx_leaf, state, sk_seed, &(params->xmss_par), pub_seed, ots_addr);
|
||||
sig_msg += tree_h*n;
|
||||
*sig_msg_len += tree_h*n;
|
||||
}
|
||||
|
||||
37
xmss_fast.h
37
xmss_fast.h
@ -19,6 +19,7 @@ typedef struct{
|
||||
int n;
|
||||
int m;
|
||||
int h;
|
||||
int k;
|
||||
} xmss_params;
|
||||
|
||||
typedef struct{
|
||||
@ -29,24 +30,48 @@ typedef struct{
|
||||
int d;
|
||||
int index_len;
|
||||
} xmssmt_params;
|
||||
|
||||
typedef struct{
|
||||
int h;
|
||||
int next_idx;
|
||||
int stackusage;
|
||||
unsigned char completed;
|
||||
unsigned char *node;
|
||||
} treehash_inst;
|
||||
|
||||
typedef struct {
|
||||
unsigned char *stack;
|
||||
int stackoffset;
|
||||
unsigned char *stacklevels;
|
||||
unsigned char *auth;
|
||||
unsigned char *keep;
|
||||
treehash_inst *treehash;
|
||||
unsigned char *retain;
|
||||
} bds_state;
|
||||
|
||||
/**
|
||||
* Initialize BDS state struct
|
||||
* parameter names are the same as used in the description of the BDS traversal
|
||||
*/
|
||||
void xmss_set_bds_state(bds_state *state, unsigned char *stack, int stackoffset, unsigned char *stacklevels, unsigned char *auth, unsigned char *keep, treehash_inst *treehash, unsigned char *retain);
|
||||
/**
|
||||
* Initializes parameter set.
|
||||
* Needed, for any of the other methods.
|
||||
*/
|
||||
void xmss_set_params(xmss_params *params, int m, int n, int h, int w);
|
||||
void xmss_set_params(xmss_params *params, int m, int n, int h, int w, int k);
|
||||
/**
|
||||
* Initialize xmssmt_params struct
|
||||
* parameter names are the same as in the draft
|
||||
*
|
||||
* Especially h is the total tree height, i.e. the XMSS trees have height h/d
|
||||
*/
|
||||
void xmssmt_set_params(xmssmt_params *params, int m, int n, int h, int d, int w);
|
||||
void xmssmt_set_params(xmssmt_params *params, int m, int n, int h, int d, int w, int k);
|
||||
/**
|
||||
* Generates a XMSS key pair for a given parameter set.
|
||||
* Format sk: [(32bit) idx || SK_SEED || SK_PRF || PUB_SEED]
|
||||
* Format pk: [root || PUB_SEED] omitting algo oid.
|
||||
*/
|
||||
int xmss_keypair(unsigned char *pk, unsigned char *sk, xmss_params *params);
|
||||
int xmss_keypair(unsigned char *pk, unsigned char *sk, bds_state *state, xmss_params *params);
|
||||
/**
|
||||
* Signs a message.
|
||||
* Returns
|
||||
@ -54,7 +79,7 @@ int xmss_keypair(unsigned char *pk, unsigned char *sk, xmss_params *params);
|
||||
* 2. an updated secret key!
|
||||
*
|
||||
*/
|
||||
int xmss_sign(unsigned char *sk, unsigned char *sig_msg, unsigned long long *sig_msg_len, const unsigned char *msg,unsigned long long msglen, const xmss_params *params);
|
||||
int xmss_sign(unsigned char *sk, bds_state *state, unsigned char *sig_msg, unsigned long long *sig_msg_len, const unsigned char *msg,unsigned long long msglen, const xmss_params *params);
|
||||
/**
|
||||
* Verifies a given message signature pair under a given public key.
|
||||
*
|
||||
@ -67,7 +92,7 @@ int xmss_sign_open(unsigned char *msg,unsigned long long *msglen, const unsigned
|
||||
* Format sk: [(ceil(h/8) bit) idx || SK_SEED || SK_PRF || PUB_SEED]
|
||||
* Format pk: [root || PUB_SEED] omitting algo oid.
|
||||
*/
|
||||
int xmssmt_keypair(unsigned char *pk, unsigned char *sk, xmssmt_params *params);
|
||||
int xmssmt_keypair(unsigned char *pk, unsigned char *sk, bds_state *state, xmssmt_params *params);
|
||||
/**
|
||||
* Signs a message.
|
||||
* Returns
|
||||
@ -75,7 +100,7 @@ int xmssmt_keypair(unsigned char *pk, unsigned char *sk, xmssmt_params *params);
|
||||
* 2. an updated secret key!
|
||||
*
|
||||
*/
|
||||
int xmssmt_sign(unsigned char *sk, unsigned char *sig_msg, unsigned long long *sig_msg_len, const unsigned char *msg, unsigned long long msglen, const xmssmt_params *params);
|
||||
int xmssmt_sign(unsigned char *sk, bds_state *state, unsigned char *sig_msg, unsigned long long *sig_msg_len, const unsigned char *msg, unsigned long long msglen, const xmssmt_params *params);
|
||||
/**
|
||||
* Verifies a given message signature pair under a given public key.
|
||||
*/
|
||||
|
||||
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