Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Algorithmic Obfuscation for LDPC Decoders   In order to protect intellectual property against untrusted foundry, many
logic-locking schemes have been developed. The main idea of logic locking is to
insert a key-controlled block into a circuit to make the circuit function
incorrectly without right keys. However, in the case that the algorithm
implemented by the circuit is naturally fault-tolerant or self-correcting,
existing logic-locking schemes do not affect the system performance much even
if wrong keys are used. One example is low-density parity-check (LDPC)
error-correcting decoder, which has broad applications in digital
communications and storage. This paper proposes two algorithmic-level
obfuscation methods for LDPC decoders. By modifying the decoding process and
locking the stopping criterion, our new designs substantially degrade the
decoder throughput and/or error-correcting performance when the wrong key is
used. Besides, our designs are also resistant to the SAT, AppSAT and removal
attacks. For an example LDPC decoder, our proposed methods reduce the
throughput to less than 1/3 and/or increase the decoder error rate by at least
two orders of magnitude with only 0.33% area overhead.

23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
21
The categories of this paper are: adap-org
17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
24
The categories of this paper are: dg-ga
5
The categories of this paper are: gr-qc
2
The categories of this paper are: math
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
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The categories of this paper are: q-alg
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph