when reading theoretical materials, it is often seen that "a common input 1^n..." what does it mean? Are there any similar questions and answers previously in StackExchange?
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$\begingroup$ There is a dupe for this.... Search security parameter $\endgroup$– kelalakaCommented Dec 20, 2021 at 12:56
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$\begingroup$ 1. Why does key generation take an input 1k, and how do I represent it in practice? 2. What does the expression 1n mean as a function argument? 3. "Power of one" as input to functions of a cryptosystem $\endgroup$– kelalakaCommented Dec 20, 2021 at 12:58
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$\begingroup$ As far as I know. $1^n$ is just an $n-$bit string of $1$'s and it is input to indicatte you are trying to input the security parameter $n$. $\endgroup$– Chito MirandaCommented Dec 22, 2021 at 3:51
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