CBD Noise Sampler | Dyber IP Cores

Overview

Centered Binomial Distribution noise sampler implementing SamplePolyCBD from FIPS 203. Generates noise polynomials for ML-KEM secret and error terms. Supports both eta=2 and eta=3 parameter sets.

Key Features

FIPS 203 SamplePolyCBD
Constant-time centered binomial distribution
eta in {2, 3} parameterizable

Benefits

Required for ML-KEM secret/error generation
Constant-time prevents timing side channels

Standards & Verification

Standards Compliance: NIST FIPS 203

Verification: Verified vs golden at both eta values.

"Verified" means RTL byte-exact against official test vectors. It does not imply FIPS 140-3 certification or foundry sign-off.

Availability & Deliverables

Available Available (verified soft IP).

Standard deliverables:

Synthesizable SystemVerilog RTL
Self-checking testbench(es)
Python golden reference model
cocotb regression
Synthesis scripts
Integration/user guide

Firm/hard IP (hardened netlist for a target node) available on foundry enablement.

CBD Noise Sampler.