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There are three distinct computational problems related to RSA. They are: FACTORIZATION: given an RSA modulus $n$, find its prime factors $p$ and $q$; ORDER: given an RSA modulus $n$, find the order $\lambda$ of the multiplicative group modulo $n$; RSA Problem: given a ring element $a \in \mathbb{Z}_n$, a public exponent $e$ and an RSA modulus, find an ...


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In step 9, you decrypted the ciphertext, 128, to the original message, 2. That's it. You're done with the toy example of naive RSA encryption/decryption. Using RSA in real life, you would apply padding, such as OAEP (also known as PKCS#1v2), to your message before raising it to the e power modulo n. If the plaintext you're trying to encrypt is quite short, ...



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