don't add padding for optimal packet size

This commit is contained in:
orignal 2020-05-18 16:42:06 -04:00
parent d4bfeab36c
commit 1c8d662e30
2 changed files with 10 additions and 3 deletions

View file

@ -713,9 +713,13 @@ namespace garlic
uint8_t paddingSize = 0;
if (payloadLen)
{
RAND_bytes (&paddingSize, 1);
paddingSize &= 0x0F; paddingSize++; // 1 - 16
payloadLen += paddingSize + 3;
// don't create padding if we are close to optimal size
if (first || payloadLen + 19 <= ECIESX25519_OPTIMAL_PAYLOAD_SIZE || payloadLen > ECIESX25519_OPTIMAL_PAYLOAD_SIZE)
{
RAND_bytes (&paddingSize, 1);
paddingSize &= 0x0F; paddingSize++; // 1 - 16
payloadLen += paddingSize + 3;
}
}
std::vector<uint8_t> v(payloadLen);
size_t offset = 0;