kshana 0.18.0

Open, reproducible PNT-resilience simulator with quantum-sensor performance models
Documentation 
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# ============================================================================
# TEACHING COPY — Tutorial 3 (Part A): Security / spoof detection.
# Kind = spoof  (NOT "security" — see note below).
#
# NAMING NOTE: this file is named for the CAPABILITY (security), but the `kind`
# inside is `spoof` — the Security figure of merit (1 - P_md) is produced by the
# spoof pack. The file name follows the capability; the kind follows the pack.
#
# Provenance: a comment-annotated copy of scenarios/spoof-attack.toml. Field
# values are byte-for-byte identical to the parent (comments never change a hash).
#
# What it does: an attacker injects a slowly-ramping false GNSS time (0.1 ns/s
# from t=60 s). Each clock cross-checks asserted time against its coasted
# prediction; the detector is a two-sided chi^2_1 / Neyman-Pearson energy test.
# Security FoM = 1 - P_md at the spec-sized (20 ns) spoof magnitude.
#
# Oracle (non-circular): P_md is computed two independent ways — closed-form
# chi^2_1 tail vs Monte-Carlo — and they must agree (classical analytic 0.442 vs
# MC 0.444). Two computations of the SAME probability agreeing is the
# non-circular cross-check (Kay, Detection Theory; standard NP/chi^2 detection).
#
# expected: scenario 2b6bd22c3b80 | spoof LinearRamp { rate_ns_per_s: 0.1 } vs 20.000 ns spec (P_fa 0.010) | quantum security 1.000 (P_md 0.000, MC 0.000) detected 70s | classical security 0.558 (P_md 0.442, MC 0.444) detected 430s
# ============================================================================

kind = "spoof"
threshold_ns = 20.0    # operational spec; the spoof "succeeds" if it reaches this undetected

[time]
step_s = 10.0
duration_s = 660.0

[attack]
start_s = 60.0         # the false-time ramp begins here
rate_ns_per_s = 0.1    # a bare rate is accepted as a LinearRamp shape

[clock_quantum]
id = "optical-sr-lattice"
provenance = "Strontium optical lattice clock, space-oriented goal sigma_y(1s)=1e-15 (arXiv:1503.08457); not flown."
y0 = 5.0e-17
q_wf = 1.0e-30
q_rw = 0.0

[clock_classical]
id = "csac-sa45s"
provenance = "Microchip SA65 / SA.45s CSAC datasheet sigma_y(1s)=3e-10; q_wf=sigma_y(1s)^2."
y0 = 5.0e-10
q_wf = 9.0e-20
q_rw = 0.0