Ma and Chen proposed a new authenticated encryption scheme with public verifiability.
This scheme requires less computational costs and communication overheads than the
conventional signature-then-encryption approaches. In this letter, we show that the Ma-Chen
scheme does not satisfy three security properties: unforgeability, confidentiality and
non-repudiation.
Relation:
IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES
