Author(s) :

Divya.

Volume/Issue :

Abstract :

The research investigate the impact of key length of RSA on security and computational efficiency, using simulation we evaluate how key length ranging from 1024 to 4096 bits perform for encryption/decryption process and their resistance to factorization attacks. The findings reveal that longer key length enhances the security by increasing the complexity of factorization. But they also incur higher computational cost, also they can affect the time and resource utilization. The result suggest that 2048-bit keys offer good security to general application whereas 3072-bit or 4096 bit keys are recommend for high security environment . We discuss these findings in the context of emerging quantum computing threats and propose guidelines in key length selection for future cryptographic system.

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