Explore the concept of known-key security in block ciphers through this 26-minute conference talk presented at FSE 2013. Delve into the research conducted by Elena Andreeva, Andrey Bogdanov, and Bart Mennink as they discuss various aspects of cryptography. Learn about ground contributions, differentiability, non-key and classical settings, general indifference, and the intriguing "Lemon Spicy Ramen" notion. Gain insights into the background, key concepts, and conclusions drawn from their study on block cipher security.