Table 1 Comparison of key length for ECC and RSA.
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 |