RSA Modular Exponentiation y x mod n 360 RSA key size Processing 300 k [bits] timet [s] 512 8 240 768 22 180 1024 48 120 1536 150 60 2048 335 5127681024 1536 2048 RSa key size k [bits] 1717 RSA Modular Exponentiation y = x e mod n 512 768 1024 1536 2048 0 60 120 180 240 300 360 RSA key size k [bits] processing time t [s] RSA key size k [bits] Processing time t [s] 512 8 768 22 1024 48 1536 150 2048 335