kris/xmss-KAT-generator
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Fix integer underflow when writing updated sk

Browse Source 
This caused secret key files to become close to MAXINT bytes, as
the unsigned int that is the private key size would be subtracted
from MAXINT when its negative was used as offset.
This commit is contained in:
Joost Rijneveld 2017-10-23 13:25:01 +02:00
parent 8970c4933c
commit 998137622a
No known key found for this signature in database
GPG Key ID: A4FE39CF49CBC553
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
test/xmss_sign.c
View File

@ -43,7 +43,7 @@ int main(int argc, char **argv) {
fread(m, 1, MLEN, stdin); fread(m, 1, MLEN, stdin);
xmss_core_sign(&params, sk, sm, &smlen, m, MLEN); xmss_core_sign(&params, sk, sm, &smlen, m, MLEN);
fseek(keypair, -params.privatekey_bytes, SEEK_CUR); fseek(keypair, -((long int)params.privatekey_bytes), SEEK_CUR);
fwrite(sk, 1, params.privatekey_bytes, keypair); fwrite(sk, 1, params.privatekey_bytes, keypair);
fwrite(sm, 1, params.bytes + MLEN, stdout); fwrite(sm, 1, params.bytes + MLEN, stdout);