AES Guest Lecturer

Attack Precautions
• Avoid use of arrays. Compute values in
SBOX and rCon.
• Design algorithms and devices to work
with constant time intervals. (independent
of key and plaintext.)
– Hidden CPU timing data is a threat.
• Use same memory throughout, Cache is
faster than DRAM
• Compute Key Expansion on the fly.
• Utilize pipelining to stabilize CPU power
consumption.