Question

what are cyphers in permutation and combination​

Answer 1

Answer:

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There are two common techniques used to construct ciphers: substitution and permutation. Substitution replaces plaintext letters or strings of letters by letters or numbers or symbols. Permutation uses the plaintext message letters but rearranges their order.

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Answer 2

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The Permutation Cipher is another form of Transposition Cipher. ... The Permutation Cipher works like this, acting on each block and reordering within the blocks. Encryption. We choose a keyword, and split the plaintext into blocks that are the same length as the keyword. We write this in columns beneath the keyword.

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