# Tag Info

## New answers tagged chosen-plaintext-attack

5

Well, to start off with, we have: $$k_1 m_1 + k_2 - n_1 p = c_1$$ $$k_1 m_2 + k_2 - n_2 p = c_2$$ $$k_1 m_3 + k_2 - n_3 p = c_3$$ Where we know $m_1, c_1, m_2, c_2, m_3, c_3$, and we don't know $k_1, k_2, p, n_1, n_2, n_3$. I chose to use explicit unknown integers $n_1, n_2, n_3$, rather than modulo an unknown $p$, as it makes it easier to justify the ...

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