Abstract
In this paper, we attack the recent NIST submission Giophantus, a public key encryption scheme. We find that the complicated structure of Giophantus’s ciphertexts leaks information via a correspondence from a low dimensional lattice. This allows us to distinguish encrypted data from random data by the LLL algorithm. This is a more efficient attack than previous proposed attacks.
| Original language | English |
|---|---|
| Pages (from-to) | 171-175 |
| Number of pages | 5 |
| Journal | Advances in Mathematics of Communications |
| Volume | 14 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Feb 2020 |
| Externally published | Yes |
Keywords
- Cryptanalysis
- Giophantus
- Lattice
- Learning with errors
- NIST.
- Post quantum cryptography