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Consider the following encryption scheme. It supports plaintexts from M = { 0 , 1 } and ciphertexts from C = { 0 , 1
Consider the following encryption scheme. It supports plaintexts from and
ciphertexts from Its keyspace is:
To encrypt plaintext under key we "fill in the characters in using the bits of
Show that the scheme does not have onetime secrecy by constructing a program that
distinguishes the two relevant libraries from the onetime secrecy definition.
Example: Below is an example encryption of
Enc
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