Skip to main content

Table 1 Comparison of key length for ECC and RSA.

From: Efficient Key Agreements in Dynamic Multicast Height Balanced Tree for Secure Multicast Communications in Ad Hoc Networks

Security level Symmetric key length (bits) ECC key length (bits) RSA/DH/DSA key length (bits) ECC/RSA key size ratio MIPS years time to break key
280 80 160 1024 1/6 1012
2112 112 224 2048 1/9 1024
2128 128 256 3072 1/12 1028
2192 192 384 7680 1/20 1047
2256 256 512 15360 1/30 1066