Mirrors/i2pd
2
0
Fork 0
mirror of https://github.com/PurpleI2P/i2pd.git synced 2025-03-22 00:59:08 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions 6

16 bytes alignmen of AES block

Browse source
This commit is contained in:
orignal 2014-11-26 11:04:49 -05:00
parent f7d90648e3
commit 357a9a6a56
3 changed files with 8 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
Garlic.cpp
View file

@ -83,6 +83,7 @@ namespace garlic
I2NPMessage * GarlicRoutingSession::WrapSingleMessage (I2NPMessage * msg) I2NPMessage * GarlicRoutingSession::WrapSingleMessage (I2NPMessage * msg)
{ {
I2NPMessage * m = NewI2NPMessage (); I2NPMessage * m = NewI2NPMessage ();
m->Align (12); // in order to get buf aligned to 16 (12 + 4)
size_t len = 0; size_t len = 0;
uint8_t * buf = m->GetPayload () + 4; // 4 bytes for length uint8_t * buf = m->GetPayload () + 4; // 4 bytes for length

6
I2NPProtocol.h
View file

@ -118,6 +118,12 @@ namespace tunnel
uint8_t * GetBuffer () { return buf + offset; }; uint8_t * GetBuffer () { return buf + offset; };
const uint8_t * GetBuffer () const { return buf + offset; }; const uint8_t * GetBuffer () const { return buf + offset; };
size_t GetLength () const { return len - offset; }; size_t GetLength () const { return len - offset; };
void Align (size_t alignment)
{
size_t rem = ((size_t)GetBuffer ()) % alignment;
if (rem)
offset += (alignment - rem);
}
I2NPMessage& operator=(const I2NPMessage& other) I2NPMessage& operator=(const I2NPMessage& other)
{ {

2
aes.h
View file

@ -45,7 +45,7 @@ namespace crypto
AESAlignedBuffer () AESAlignedBuffer ()
{ {
m_Buf = m_UnalignedBuffer; m_Buf = m_UnalignedBuffer;
uint8_t rem = ((uint64_t)m_Buf) & 0x0f; uint8_t rem = ((size_t)m_Buf) & 0x0f;
if (rem) if (rem)
m_Buf += (16 - rem); m_Buf += (16 - rem);
} }