pavelkryukov / putty-aes-ni Goto Github PK

Microsoft Visual Studio cannot convert __m128i to __m128d type. It's needed to 
implement a hack.

Now in sshaesni.c key expansion is made with usual C code. We need to replace 
this C code with intrinsics.

There should be a simple (maybe one instruction) way to fix endianness of 
128bit vector. Please, find it.

Now in sshaesni.c encryprion is made with usual C code. We need to replace this 
C code with intrinsics.

For improving compatibility of new AES-NI, we need to see how this issue had 
been resolved in other projects, such as OpenSSL.

We need to measure speed of sshaes.c against sshaesni.c

Maxim, please add support of Intel® SDE in UnitTests makefile with 
configuration if it is necessary.

Maxim, please create Wiki page on this repository with all links that you had 
send via e-mail

We need to estimate performance impact of enabling AES-NI. For this, we should 
understand, how much time encrypt/decrypt works.

We need to make regression tests for two purposes:

1. To be sure that encryption/decryption works fine
2. To measure performance affect of introducing AES-NI in Putty

We need to determine GCC version (when? On 'mkfiles.pl' or 'Makefile' stage?) 
and pass -maes and -msse4 flags to GCC.

Now in sshaesni.c encryprion is made with usual C code. We need to replace this 
C code with intrinsics.

Merge two version of AES into one file.

We need to compare results between original AES and AES-NI for futher 
implementation

Hey, I need to make documentation for running Performance test.

Usually we use CBC, but Putty uses CTR too. We need to implement this feature.

We need to show that clean AES-NI is faster than AES-OI with good 
demonstration. The best variant is to decrypt huge file (eg. movie) with slow 
algorithm and with the fast one.

We need a computer for pscp demonstration with connection to local network.

We need to find a way to show lower CPU usage by PSCP-AES-NI versus usual PSCP. 
Maxim, you said you can fix this issue.

We need to understand what options are needed for built of Putty with 
intrinsics enabled.