/
params.c
753 lines (684 loc) · 18.1 KB
/
params.c
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#include <stdint.h>
#include <string.h>
#include "params.h"
#include "xmss_core.h"
int xmss_str_to_oid(uint32_t *oid, const char *s)
{
if (!strcmp(s, "XMSS-SHA2_10_256")) {
*oid = 0x00000001;
}
else if (!strcmp(s, "XMSS-SHA2_16_256")) {
*oid = 0x00000002;
}
else if (!strcmp(s, "XMSS-SHA2_20_256")) {
*oid = 0x00000003;
}
else if (!strcmp(s, "XMSS-SHA2_10_512")) {
*oid = 0x00000004;
}
else if (!strcmp(s, "XMSS-SHA2_16_512")) {
*oid = 0x00000005;
}
else if (!strcmp(s, "XMSS-SHA2_20_512")) {
*oid = 0x00000006;
}
else if (!strcmp(s, "XMSS-SHAKE_10_256")) {
*oid = 0x00000007;
}
else if (!strcmp(s, "XMSS-SHAKE_16_256")) {
*oid = 0x00000008;
}
else if (!strcmp(s, "XMSS-SHAKE_20_256")) {
*oid = 0x00000009;
}
else if (!strcmp(s, "XMSS-SHAKE_10_512")) {
*oid = 0x0000000a;
}
else if (!strcmp(s, "XMSS-SHAKE_16_512")) {
*oid = 0x0000000b;
}
else if (!strcmp(s, "XMSS-SHAKE_20_512")) {
*oid = 0x0000000c;
}
else if (!strcmp(s, "XMSS-SHA2_10_192")) {
*oid = 0x0000000d;
}
else if (!strcmp(s, "XMSS-SHA2_16_192")) {
*oid = 0x0000000e;
}
else if (!strcmp(s, "XMSS-SHA2_20_192")) {
*oid = 0x0000000f;
}
else if (!strcmp(s, "XMSS-SHAKE256_10_256")) {
*oid = 0x00000010;
}
else if (!strcmp(s, "XMSS-SHAKE256_16_256")) {
*oid = 0x00000011;
}
else if (!strcmp(s, "XMSS-SHAKE256_20_256")) {
*oid = 0x00000012;
}
else if (!strcmp(s, "XMSS-SHAKE256_10_192")) {
*oid = 0x00000013;
}
else if (!strcmp(s, "XMSS-SHAKE256_16_192")) {
*oid = 0x00000014;
}
else if (!strcmp(s, "XMSS-SHAKE256_20_192")) {
*oid = 0x00000015;
}
else {
return -1;
}
return 0;
}
int xmssmt_str_to_oid(uint32_t *oid, const char *s)
{
if (!strcmp(s, "XMSSMT-SHA2_20/2_256")) {
*oid = 0x00000001;
}
else if (!strcmp(s, "XMSSMT-SHA2_20/4_256")) {
*oid = 0x00000002;
}
else if (!strcmp(s, "XMSSMT-SHA2_40/2_256")) {
*oid = 0x00000003;
}
else if (!strcmp(s, "XMSSMT-SHA2_40/4_256")) {
*oid = 0x00000004;
}
else if (!strcmp(s, "XMSSMT-SHA2_40/8_256")) {
*oid = 0x00000005;
}
else if (!strcmp(s, "XMSSMT-SHA2_60/3_256")) {
*oid = 0x00000006;
}
else if (!strcmp(s, "XMSSMT-SHA2_60/6_256")) {
*oid = 0x00000007;
}
else if (!strcmp(s, "XMSSMT-SHA2_60/12_256")) {
*oid = 0x00000008;
}
else if (!strcmp(s, "XMSSMT-SHA2_20/2_512")) {
*oid = 0x00000009;
}
else if (!strcmp(s, "XMSSMT-SHA2_20/4_512")) {
*oid = 0x0000000a;
}
else if (!strcmp(s, "XMSSMT-SHA2_40/2_512")) {
*oid = 0x0000000b;
}
else if (!strcmp(s, "XMSSMT-SHA2_40/4_512")) {
*oid = 0x0000000c;
}
else if (!strcmp(s, "XMSSMT-SHA2_40/8_512")) {
*oid = 0x0000000d;
}
else if (!strcmp(s, "XMSSMT-SHA2_60/3_512")) {
*oid = 0x0000000e;
}
else if (!strcmp(s, "XMSSMT-SHA2_60/6_512")) {
*oid = 0x0000000f;
}
else if (!strcmp(s, "XMSSMT-SHA2_60/12_512")) {
*oid = 0x00000010;
}
else if (!strcmp(s, "XMSSMT-SHAKE_20/2_256")) {
*oid = 0x00000011;
}
else if (!strcmp(s, "XMSSMT-SHAKE_20/4_256")) {
*oid = 0x00000012;
}
else if (!strcmp(s, "XMSSMT-SHAKE_40/2_256")) {
*oid = 0x00000013;
}
else if (!strcmp(s, "XMSSMT-SHAKE_40/4_256")) {
*oid = 0x00000014;
}
else if (!strcmp(s, "XMSSMT-SHAKE_40/8_256")) {
*oid = 0x00000015;
}
else if (!strcmp(s, "XMSSMT-SHAKE_60/3_256")) {
*oid = 0x00000016;
}
else if (!strcmp(s, "XMSSMT-SHAKE_60/6_256")) {
*oid = 0x00000017;
}
else if (!strcmp(s, "XMSSMT-SHAKE_60/12_256")) {
*oid = 0x00000018;
}
else if (!strcmp(s, "XMSSMT-SHAKE_20/2_512")) {
*oid = 0x00000019;
}
else if (!strcmp(s, "XMSSMT-SHAKE_20/4_512")) {
*oid = 0x0000001a;
}
else if (!strcmp(s, "XMSSMT-SHAKE_40/2_512")) {
*oid = 0x0000001b;
}
else if (!strcmp(s, "XMSSMT-SHAKE_40/4_512")) {
*oid = 0x0000001c;
}
else if (!strcmp(s, "XMSSMT-SHAKE_40/8_512")) {
*oid = 0x0000001d;
}
else if (!strcmp(s, "XMSSMT-SHAKE_60/3_512")) {
*oid = 0x0000001e;
}
else if (!strcmp(s, "XMSSMT-SHAKE_60/6_512")) {
*oid = 0x0000001f;
}
else if (!strcmp(s, "XMSSMT-SHAKE_60/12_512")) {
*oid = 0x00000020;
}
else if (!strcmp(s, "XMSSMT-SHA2_20/2_192")) {
*oid = 0x00000021;
}
else if (!strcmp(s, "XMSSMT-SHA2_20/4_192")) {
*oid = 0x00000022;
}
else if (!strcmp(s, "XMSSMT-SHA2_40/2_192")) {
*oid = 0x00000023;
}
else if (!strcmp(s, "XMSSMT-SHA2_40/4_192")) {
*oid = 0x00000024;
}
else if (!strcmp(s, "XMSSMT-SHA2_40/8_192")) {
*oid = 0x00000025;
}
else if (!strcmp(s, "XMSSMT-SHA2_60/3_192")) {
*oid = 0x00000026;
}
else if (!strcmp(s, "XMSSMT-SHA2_60/6_192")) {
*oid = 0x00000027;
}
else if (!strcmp(s, "XMSSMT-SHA2_60/12_192")) {
*oid = 0x00000028;
}
else if (!strcmp(s, "XMSSMT-SHAKE256_20/2_256")) {
*oid = 0x00000029;
}
else if (!strcmp(s, "XMSSMT-SHAKE256_20/4_256")) {
*oid = 0x0000002a;
}
else if (!strcmp(s, "XMSSMT-SHAKE256_40/2_256")) {
*oid = 0x0000002b;
}
else if (!strcmp(s, "XMSSMT-SHAKE256_40/4_256")) {
*oid = 0x0000002c;
}
else if (!strcmp(s, "XMSSMT-SHAKE256_40/8_256")) {
*oid = 0x0000002d;
}
else if (!strcmp(s, "XMSSMT-SHAKE256_60/3_256")) {
*oid = 0x0000002e;
}
else if (!strcmp(s, "XMSSMT-SHAKE256_60/6_256")) {
*oid = 0x0000002f;
}
else if (!strcmp(s, "XMSSMT-SHAKE256_60/12_256")) {
*oid = 0x00000030;
}
else if (!strcmp(s, "XMSSMT-SHAKE256_20/2_192")) {
*oid = 0x00000031;
}
else if (!strcmp(s, "XMSSMT-SHAKE256_20/4_192")) {
*oid = 0x00000032;
}
else if (!strcmp(s, "XMSSMT-SHAKE256_40/2_192")) {
*oid = 0x00000033;
}
else if (!strcmp(s, "XMSSMT-SHAKE256_40/4_192")) {
*oid = 0x00000034;
}
else if (!strcmp(s, "XMSSMT-SHAKE256_40/8_192")) {
*oid = 0x00000035;
}
else if (!strcmp(s, "XMSSMT-SHAKE256_60/3_192")) {
*oid = 0x00000036;
}
else if (!strcmp(s, "XMSSMT-SHAKE256_60/6_192")) {
*oid = 0x00000037;
}
else if (!strcmp(s, "XMSSMT-SHAKE256_60/12_192")) {
*oid = 0x00000038;
}
else {
return -1;
}
return 0;
}
int xmss_parse_oid(xmss_params *params, const uint32_t oid)
{
switch (oid) {
case 0x00000001:
case 0x00000002:
case 0x00000003:
case 0x00000004:
case 0x00000005:
case 0x00000006:
case 0x0000000d:
case 0x0000000e:
case 0x0000000f:
params->func = XMSS_SHA2;
break;
case 0x00000007:
case 0x00000008:
case 0x00000009:
params->func = XMSS_SHAKE128;
break;
case 0x0000000a:
case 0x0000000b:
case 0x0000000c:
case 0x00000010:
case 0x00000011:
case 0x00000012:
case 0x00000013:
case 0x00000014:
case 0x00000015:
params->func = XMSS_SHAKE256;
break;
default:
return -1;
}
switch (oid) {
case 0x0000000d:
case 0x0000000e:
case 0x0000000f:
case 0x00000013:
case 0x00000014:
case 0x00000015:
params->n = 24;
params->padding_len = 4;
break;
case 0x00000001:
case 0x00000002:
case 0x00000003:
case 0x00000007:
case 0x00000008:
case 0x00000009:
case 0x00000010:
case 0x00000011:
case 0x00000012:
params->n = 32;
params->padding_len = 32;
break;
case 0x00000004:
case 0x00000005:
case 0x00000006:
case 0x0000000a:
case 0x0000000b:
case 0x0000000c:
params->n = 64;
params->padding_len = 64;
break;
default:
return -1;
}
switch (oid) {
case 0x00000001:
case 0x00000004:
case 0x00000007:
case 0x0000000a:
case 0x0000000d:
case 0x00000010:
case 0x00000013:
params->full_height = 10;
break;
case 0x00000002:
case 0x00000005:
case 0x00000008:
case 0x0000000b:
case 0x0000000e:
case 0x00000011:
case 0x00000014:
params->full_height = 16;
break;
case 0x00000003:
case 0x00000006:
case 0x00000009:
case 0x0000000c:
case 0x0000000f:
case 0x00000012:
case 0x00000015:
params->full_height = 20;
break;
default:
return -1;
}
params->d = 1;
params->wots_w = 16;
// TODO figure out sensible and legal values for this based on the above
params->bds_k = 0;
return xmss_xmssmt_initialize_params(params);
}
int xmssmt_parse_oid(xmss_params *params, const uint32_t oid)
{
switch (oid) {
case 0x00000001:
case 0x00000002:
case 0x00000003:
case 0x00000004:
case 0x00000005:
case 0x00000006:
case 0x00000007:
case 0x00000008:
case 0x00000009:
case 0x0000000a:
case 0x0000000b:
case 0x0000000c:
case 0x0000000d:
case 0x0000000e:
case 0x0000000f:
case 0x00000010:
case 0x00000021:
case 0x00000022:
case 0x00000023:
case 0x00000024:
case 0x00000025:
case 0x00000026:
case 0x00000027:
case 0x00000028:
params->func = XMSS_SHA2;
break;
case 0x00000011:
case 0x00000012:
case 0x00000013:
case 0x00000014:
case 0x00000015:
case 0x00000016:
case 0x00000017:
case 0x00000018:
params->func = XMSS_SHAKE128;
break;
case 0x00000019:
case 0x0000001a:
case 0x0000001b:
case 0x0000001c:
case 0x0000001e:
case 0x0000001d:
case 0x0000001f:
case 0x00000020:
case 0x00000029:
case 0x0000002a:
case 0x0000002b:
case 0x0000002c:
case 0x0000002d:
case 0x0000002e:
case 0x0000002f:
case 0x00000030:
case 0x00000031:
case 0x00000032:
case 0x00000033:
case 0x00000034:
case 0x00000035:
case 0x00000036:
case 0x00000037:
case 0x00000038:
params->func = XMSS_SHAKE256;
break;
default:
return -1;
}
switch (oid) {
case 0x00000021:
case 0x00000022:
case 0x00000023:
case 0x00000024:
case 0x00000025:
case 0x00000026:
case 0x00000027:
case 0x00000028:
case 0x00000031:
case 0x00000032:
case 0x00000033:
case 0x00000034:
case 0x00000035:
case 0x00000036:
case 0x00000037:
case 0x00000038:
params->n = 24;
params->padding_len = 4;
break;
case 0x00000001:
case 0x00000002:
case 0x00000003:
case 0x00000004:
case 0x00000005:
case 0x00000006:
case 0x00000007:
case 0x00000008:
case 0x00000011:
case 0x00000012:
case 0x00000013:
case 0x00000014:
case 0x00000015:
case 0x00000016:
case 0x00000017:
case 0x00000018:
case 0x00000029:
case 0x0000002a:
case 0x0000002b:
case 0x0000002c:
case 0x0000002d:
case 0x0000002e:
case 0x0000002f:
case 0x00000030:
params->n = 32;
params->padding_len = 32;
break;
case 0x00000009:
case 0x0000000a:
case 0x0000000b:
case 0x0000000c:
case 0x0000000d:
case 0x0000000e:
case 0x0000000f:
case 0x00000010:
case 0x00000019:
case 0x0000001a:
case 0x0000001b:
case 0x0000001c:
case 0x0000001d:
case 0x0000001e:
case 0x0000001f:
case 0x00000020:
params->n = 64;
params->padding_len = 64;
break;
default:
return -1;
}
switch (oid) {
case 0x00000001:
case 0x00000002:
case 0x00000009:
case 0x0000000a:
case 0x00000011:
case 0x00000012:
case 0x00000019:
case 0x0000001a:
case 0x00000021:
case 0x00000022:
case 0x00000029:
case 0x0000002a:
case 0x00000031:
case 0x00000032:
params->full_height = 20;
break;
case 0x00000003:
case 0x00000004:
case 0x00000005:
case 0x0000000b:
case 0x0000000c:
case 0x0000000d:
case 0x00000013:
case 0x00000014:
case 0x00000015:
case 0x0000001b:
case 0x0000001c:
case 0x0000001d:
case 0x00000023:
case 0x00000024:
case 0x00000025:
case 0x0000002b:
case 0x0000002c:
case 0x0000002d:
case 0x00000033:
case 0x00000034:
case 0x00000035:
params->full_height = 40;
break;
case 0x00000006:
case 0x00000007:
case 0x00000008:
case 0x0000000e:
case 0x0000000f:
case 0x00000010:
case 0x00000016:
case 0x00000017:
case 0x00000018:
case 0x0000001e:
case 0x0000001f:
case 0x00000020:
case 0x00000026:
case 0x00000027:
case 0x00000028:
case 0x0000002e:
case 0x0000002f:
case 0x00000030:
case 0x00000036:
case 0x00000037:
case 0x00000038:
params->full_height = 60;
break;
default:
return -1;
}
switch (oid) {
case 0x00000001:
case 0x00000003:
case 0x00000009:
case 0x0000000b:
case 0x00000011:
case 0x00000013:
case 0x00000019:
case 0x0000001b:
case 0x00000021:
case 0x00000023:
case 0x00000029:
case 0x0000002b:
case 0x00000031:
case 0x00000033:
params->d = 2;
break;
case 0x00000002:
case 0x00000004:
case 0x0000000a:
case 0x0000000c:
case 0x00000012:
case 0x00000014:
case 0x0000001a:
case 0x0000001c:
case 0x00000022:
case 0x00000024:
case 0x0000002a:
case 0x0000002c:
case 0x00000032:
case 0x00000034:
params->d = 4;
break;
case 0x00000005:
case 0x0000000d:
case 0x00000015:
case 0x0000001d:
case 0x00000025:
case 0x0000002d:
case 0x00000035:
params->d = 8;
break;
case 0x00000006:
case 0x0000000e:
case 0x00000016:
case 0x0000001e:
case 0x00000026:
case 0x0000002e:
case 0x00000036:
params->d = 3;
break;
case 0x00000007:
case 0x0000000f:
case 0x00000017:
case 0x0000001f:
case 0x00000027:
case 0x0000002f:
case 0x00000037:
params->d = 6;
break;
case 0x00000008:
case 0x00000010:
case 0x00000018:
case 0x00000020:
case 0x00000028:
case 0x00000030:
case 0x00000038:
params->d = 12;
break;
default:
return -1;
}
params->wots_w = 16;
// TODO figure out sensible and legal values for this based on the above
params->bds_k = 0;
return xmss_xmssmt_initialize_params(params);
}
/**
* Given a params struct where the following properties have been initialized;
* - full_height; the height of the complete (hyper)tree
* - n; the number of bytes of hash function output
* - d; the number of layers (d > 1 implies XMSSMT)
* - func; one of {XMSS_SHA2, XMSS_SHAKE128, XMSS_SHAKE256}
* - wots_w; the Winternitz parameter
* - optionally, bds_k; the BDS traversal trade-off parameter,
* this function initializes the remainder of the params structure.
*/
int xmss_xmssmt_initialize_params(xmss_params *params)
{
params->tree_height = params->full_height / params->d;
if (params->wots_w == 4) {
params->wots_log_w = 2;
params->wots_len1 = 8 * params->n / params->wots_log_w;
/* len_2 = floor(log(len_1 * (w - 1)) / log(w)) + 1 */
params->wots_len2 = 5;
}
else if (params->wots_w == 16) {
params->wots_log_w = 4;
params->wots_len1 = 8 * params->n / params->wots_log_w;
/* len_2 = floor(log(len_1 * (w - 1)) / log(w)) + 1 */
params->wots_len2 = 3;
}
else if (params->wots_w == 256) {
params->wots_log_w = 8;
params->wots_len1 = 8 * params->n / params->wots_log_w;
/* len_2 = floor(log(len_1 * (w - 1)) / log(w)) + 1 */
params->wots_len2 = 2;
}
else {
return -1;
}
params->wots_len = params->wots_len1 + params->wots_len2;
params->wots_sig_bytes = params->wots_len * params->n;
if (params->d == 1) { // Assume this is XMSS, not XMSS^MT
/* In XMSS, always use fixed 4 bytes for index_bytes */
params->index_bytes = 4;
}
else {
/* In XMSS^MT, round index_bytes up to nearest byte. */
params->index_bytes = (params->full_height + 7) / 8;
}
params->sig_bytes = (params->index_bytes + params->n
+ params->d * params->wots_sig_bytes
+ params->full_height * params->n);
params->pk_bytes = 2 * params->n;
params->sk_bytes = xmss_xmssmt_core_sk_bytes(params);
return 0;
}