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fixed _gen_ctr_nonce(), reported in #12: invalid ctr comparision did lead to counter underflow

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TLINDEN
2015-10-14 19:53:03 +02:00
parent 3a8d8c010f
commit ae5be44182
1 changed files with 5 additions and 3 deletions
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8
libpcp/crypto.c
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@@ -707,7 +707,9 @@ uint64_t _get_nonce_ctr(byte *nonce) {
fprintf(stderr, "invalid counter size %d!", i);
abort();
}
fprintf(stderr, "ctr size: %d ", i);
switch(i) {
case 1:
ctr = nonce[1];
@@ -796,12 +798,12 @@ byte *_gen_ctr_nonce(uint64_t ctr) {
m64 = htobe64(ctr);
memcpy(&nonce[1], &m64, 8);
}
else if(ctr < m32 && ctr > m16) {
else if(ctr <= m32 && ctr > m16) {
i = 4;
m32 = htobe32(ctr);
memcpy(&nonce[1], &m32, 4);
}
else if(ctr < m16 && ctr > m8) {
else if(ctr <= m16 && ctr > m8) {
i = 2;
m16 = htobe16(ctr);
memcpy(&nonce[1], &m16, 2);