Breaking RSA Without Factoring

Researchers have developed a classical, non‑factoring attack that forges RSA signatures (especially against textbook/blind‑signature uses) and drastically lowers the effective security of common key sizes. The team demonstrated practical work against deprecated 1024‑bit keys on an academic cluster and estimates security levels for 2048‑ and 4096‑bit keys drop by orders of magnitude compared with prior assumptions. — If validated, the result accelerates the urgency of retiring RSA (and especially textbook/blind‑RSA uses), updating standards, and auditing long‑lived signature dependencies across government and industry.