For the RSA cryptosystem to be considered secure how large should be the initial prime numbers selected for the keys computing algorithm?
Tuesday, 12 September 2023
by Silvio Pereira
To ensure the security of the RSA cryptosystem, it is indeed important to select large prime numbers for the keys computing algorithm. In fact, it is recommended to choose prime numbers that are at least 512 bits in length, and in some cases even larger, such as twice or four times as much. The security
- Published in Cybersecurity, EITC/IS/CCF Classical Cryptography Fundamentals, Conclusions for private-key cryptography, Multiple encryption and brute-force attacks
Tagged under:
Composite Numbers, Cybersecurity, Key Computing Algorithm, Prime Numbers, RSA Cryptosystem, Security

