kris/xmss-KAT-generator
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Remove fixed message length from UI

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Joost Rijneveld 2017-10-26 14:47:34 +02:00
parent dd1ae2a6aa
commit d340e0700d
No known key found for this signature in database
GPG Key ID: A4FE39CF49CBC553
3 changed files with 74 additions and 41 deletions
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5
ui/keypair.c
View File

@ -1,8 +1,9 @@
#include "../params.h"
#include "../xmss.h"
#include <stdio.h>
#include <stdint.h>
#include "../params.h"
#include "../xmss.h"
#ifdef XMSSMT
#define XMSS_STR_TO_OID xmssmt_str_to_oid
#define XMSS_PARSE_OID xmssmt_parse_oid

50
ui/open.c
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@ -1,8 +1,7 @@
#include "../params.h"
#include "../xmss.h"
#include <stdio.h>
#define MLEN 32
#include "../params.h"
#include "../xmss.h"
#ifdef XMSSMT
#define XMSS_PARSE_OID xmssmt_parse_oid
@ -13,37 +12,53 @@
#endif
int main(int argc, char **argv) {
FILE *keypair;
FILE *keypair_file;
FILE *sm_file;
xmss_params params;
uint32_t oid;
unsigned long long smlen;
int ret;
if (argc != 2) {
fprintf(stderr, "Expected keypair filename as only parameter, "
"and the signature + message via stdin.\n"
if (argc != 3) {
fprintf(stderr, "Expected keypair and signature + message filenames "
"as two parameters.\n"
"Keypair file needs only to contain the public key.\n"
"The return code 0 indicates verification success.\n");
return -1;
}
keypair = fopen(argv[1], "rb");
if (keypair == NULL) {
keypair_file = fopen(argv[1], "rb");
if (keypair_file == NULL) {
fprintf(stderr, "Could not open keypair file.\n");
return -1;
}
fread(&oid, 1, XMSS_OID_LEN, keypair);
sm_file = fopen(argv[2], "rb");
if (sm_file == NULL) {
fprintf(stderr, "Could not open signature + message file.\n");
return -1;
}
/* Find out the message length. */
fseek(sm_file, 0, SEEK_END);
smlen = ftell(sm_file);
fread(&oid, 1, XMSS_OID_LEN, keypair_file);
XMSS_PARSE_OID(&params, oid);
unsigned char pk[XMSS_OID_LEN + params.pk_bytes];
unsigned char sm[params.sig_bytes + MLEN];
unsigned char m[params.sig_bytes + MLEN];
unsigned char sm[smlen];
unsigned char m[smlen];
unsigned long long mlen;
fseek(keypair, 0, SEEK_SET);
fread(pk, 1, XMSS_OID_LEN + params.pk_bytes, keypair);
fread(sm, 1, params.sig_bytes + MLEN, stdin);
fseek(keypair_file, 0, SEEK_SET);
fseek(sm_file, 0, SEEK_SET);
fread(pk, 1, XMSS_OID_LEN + params.pk_bytes, keypair_file);
fread(sm, 1, smlen, sm_file);
ret = XMSS_SIGN_OPEN(m, &mlen, sm, params.sig_bytes + MLEN, pk);
ret = XMSS_SIGN_OPEN(m, &mlen, sm, smlen, pk);
if (ret) {
printf("Verification failed!\n");
@ -52,5 +67,8 @@ int main(int argc, char **argv) {
printf("Verification succeeded.\n");
}
fclose(keypair_file);
fclose(sm_file);
return ret;
}

60
ui/sign.c
View File

@ -1,8 +1,7 @@
#include "../params.h"
#include "../xmss.h"
#include <stdio.h>
#define MLEN 32
#include "../params.h"
#include "../xmss.h"
#ifdef XMSSMT
#define XMSS_PARSE_OID xmssmt_parse_oid
@ -13,51 +12,66 @@
#endif
int main(int argc, char **argv) {
FILE *keypair;
FILE *keypair_file;
FILE *m_file;
xmss_params params;
uint32_t oid_pk;
uint32_t oid_sk;
if (argc != 2) {
fprintf(stderr, "Expected keypair filename as only parameter, "
"and the message via stdin.\n"
unsigned long long mlen;
if (argc != 3) {
fprintf(stderr, "Expected keypair and message filenames as two "
"parameters.\n"
"The keypair is updated with the changed state, "
"and the message + signature is output via stdout.\n");
return -1;
}
keypair = fopen(argv[1], "r+b");
if (keypair == NULL) {
keypair_file = fopen(argv[1], "r+b");
if (keypair_file == NULL) {
fprintf(stderr, "Could not open keypair file.\n");
return -1;
}
m_file = fopen(argv[2], "rb");
if (m_file == NULL) {
fprintf(stderr, "Could not open message file.\n");
return -1;
}
/* Find out the message length. */
fseek(m_file, 0, SEEK_END);
mlen = ftell(m_file);
/* Read the OID from the public key, as we need its length to seek past it */
fread(&oid_pk, 1, XMSS_OID_LEN, keypair);
fread(&oid_pk, 1, XMSS_OID_LEN, keypair_file);
XMSS_PARSE_OID(&params, oid_pk);
/* fseek past the public key */
fseek(keypair, params.pk_bytes, SEEK_CUR);
fseek(keypair_file, params.pk_bytes, SEEK_CUR);
/* This is the OID we're actually going to use. Likely the same, but still. */
fread(&oid_sk, 1, XMSS_OID_LEN, keypair);
fread(&oid_sk, 1, XMSS_OID_LEN, keypair_file);
XMSS_PARSE_OID(&params, oid_sk);
unsigned char sk[XMSS_OID_LEN + params.sk_bytes];
unsigned char m[MLEN];
unsigned char sm[params.sig_bytes + MLEN];
unsigned char m[mlen];
unsigned char sm[params.sig_bytes + mlen];
unsigned long long smlen;
/* fseek back to start of sk. */
fseek(keypair, -((long int)XMSS_OID_LEN), SEEK_CUR);
fread(sk, 1, XMSS_OID_LEN + params.sk_bytes, keypair);
fread(m, 1, MLEN, stdin);
fseek(keypair_file, -((long int)XMSS_OID_LEN), SEEK_CUR);
fseek(m_file, 0, SEEK_SET);
fread(sk, 1, XMSS_OID_LEN + params.sk_bytes, keypair_file);
fread(m, 1, mlen, m_file);
XMSS_SIGN(sk, sm, &smlen, m, MLEN);
XMSS_SIGN(sk, sm, &smlen, m, mlen);
fseek(keypair, -((long int)params.sk_bytes), SEEK_CUR);
fwrite(sk + XMSS_OID_LEN, 1, params.sk_bytes, keypair);
fwrite(sm, 1, params.sig_bytes + MLEN, stdout);
fseek(keypair_file, -((long int)params.sk_bytes), SEEK_CUR);
fwrite(sk + XMSS_OID_LEN, 1, params.sk_bytes, keypair_file);
fwrite(sm, 1, smlen, stdout);
fclose(keypair);
fclose(stdout);
fclose(keypair_file);
fclose(m_file);
}