Public key encryption is essentially the opposite of single-key encryption. With any public key encryption algorithm, one key is used to encrypt the message (called the public key ) and another is used to decrypt the message (called the private key) . You can freely distribute your public key so that anyone can encrypt a message to send you. However, only you have the private key and only you can decrypt the message. The actual mathematics behind the creation and applications of the keys can be quite complex. Many public key algorithms are dependent to some extent on large prime number factoring and number theory.
The RSA method is a widely used encryption algorithm. RSA must be discussed whilst conversing about cryptography. The public key method was developed in 1977 by three mathematicians: Ron Rivest, Adi Shamir, and Len Adleman. The name of the algorithm is derived from the first letter of each mathematician’s last name. One significant advantage of RSA is that it is a public key encryption method. However, RSA is lower than the symmetric ciphers. In fact, asymmetric ciphers are slower than symmetric ciphers generally.
What is the answer from the excerpts about breaking RSA?
“If you are talking about the algorithm itself, that depends on the ability for the adversary to factor your cryptographic keys.
An RSA key, essentially, is a product of two large prime numbers, N = pq.
Assuming that the adversary has conventional computers, not quantum computers, then most scientists assume that key lengths of around 2048 bits are safe for the foreseeable future. “
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