Oblivious network intrusion detection systems

In this section, we present two application algorithms that utilize the hybrid gates:

1. 1.

   Hybrid Direct Matching (HDM): Matching of plaintext stream against a homomorphically encrypted ciphertext rule. The algorithm describes how an oblivious NIDS at the Cloud Side can use the hybrid gates to search within the payload for an exact match against an encrypted signature rule.

2. 2.

   Hybrid Range Matching (HRM):…