As with all asymmetric cryptosystems (Stalling, 2003), the Rabin system uses both a public and a private key. The public key is necessary for later encoding and can be published, while the private key must be known only to the sending and receiving entities A and B. Each entity creates a public key and a corresponding private key. For public-key encryption, receiver B generates two large random and distinct prime numbers p, q such that p = q = 3 (mod 4), each having roughly the same size. Then B computes n = pq. B’s public key is n, B’s private key is (p, q).

As with all asymmetric cryptosystems (Stalling, 2003), the Rabin system uses both a public and a private key. The public key is necessary for later encoding and can be published, while the private key must be known only to the sending and receiving entities A and B. Each entity creates a public key and a corresponding private key. For public-key encryption, receiver B generates two large random and distinct prime numbers p, q such that p = q = 3 (mod 4), each having roughly the same size. Then B computes n = pq. B’s public key is n, B’s private key is (p, q).

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