The document describes a novel Concurrent Error Detection (CED) scheme to counter fault-based attacks against RSA encryption. The scheme exploits RSA's multiplicative homomorphic property by verifying if the product of encrypted messages equals the encryption of the product of plaintexts. If a mismatch occurs, all ciphertexts will be suppressed. This allows easy integration of fault attack resistance into architectures already resistant to other side-channel attacks like power analysis. The time and memory overhead can be traded off using a parameter k.

1. Impulse Technologies
Beacons U to World of technology
044-42133143, 98401 03301,9841091117 ieeeprojects@yahoo.com www.impulse.net.in
Homomorphic Property-Based Concurrent Error Detection of RSA:
A Countermeasure to Fault Attack
Abstract
Fault-based attacks, which recover secret keys by deliberately introducing fault(s)
in cipher implementations and analyzing the faulty outputs, have been proved to be
extremely powerful. In this paper, we propose a novel Concurrent Error Detection (CED)
scheme to counter fault-based attack against RSA by exploiting its multiplicative
homomorphic property. Specifically, the proposed CED scheme verifies if Πi=1k E(mi) ≡
EΠi=1k mi (mod n) (mod n) where E could be either RSA encryption, or decryption, or
signature, or verification process. Upon a mismatch, all the ciphertexts will be
suppressed. The time overhead is 1/k and k can be used to trade-off the time overhead
with memory overhead and output latency. Recognizing that an RSA device could be
subject to a combination of several side-channel attacks, the proposed scheme enables an
easy divide-and-concur solution-any fine-tuned architecture, for example, a power-attack-
resistant architecture can be equipped with fault-attack resistance easily without
disturbing its original resistance. This advantage distinguishes the proposed scheme over
the existing countermeasures.
Your Own Ideas or Any project from any company can be Implemented
at Better price (All Projects can be done in Java or DotNet whichever the student wants)
1