Research Article
RAMHU: A New Robust Lightweight Scheme for Mutual Users Authentication in Healthcare Applications
Table 1
Keys sizes and some information for asymmetric algorithms.
| Algo. | Keys sizes | Ratio | Author(s) | Year | Mathematical problem |
| RSA | 1024 | 2048 | 3072 | 7680 | 15360 | 1:6-30 | Rivest, Shamir, and Adleman | 1978 | Integer factorization | Elgamal | Taher Elgamal | 1985 | Multiplicative group | ECIES | 160-223 | 224-255 | 256-383 | 384-511 | 512-more | Neal Koblitz and Victor Miller | 1985 | Elliptic curve discrete log. (ECDLP) |
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