Shatachandra Shield

System Validation & Conformance Registry

Deterministic cryptographic test vector proofs, strict avalanche bit-diffusion records, hardware vectorization profiles, and transport security audits verified across production AWS host environments.

Cryptographic Standards Conformance

NIST ACVP FIPS 203 Known-Answer Tests

Byte-exact mathematical validation against official National Institute of Standards and Technology (NIST) reference vectors for ML-KEM-512, ML-KEM-768, and ML-KEM-1024 parameter sets.

✔ KeyGen: 75/75 Vectors Passed (25/25 per set)
✔ Encapsulation: 75/75 Vectors Passed (25/25 per set)
✔ Decapsulation: 30/30 Vectors Passed (10/10 per set)
✔ Input Validation: 30/30 ekCheck + 30/30 dkCheck Passed
180/180
100% Byte-Exact Pass
Cryptographic Diffusion Integrity

Strict Avalanche Criterion (SAC) Bit Diffusion

Measured live bit-perturbation testing flipping 1 input bit and measuring output bit changes across cryptographic components. All results cluster tightly around the theoretical 50.00% optimum.

✔ ML-KEM-512 Ciphertext: 49.93% (Range: 49.0% - 51.0%, n=20)
✔ Keccak-f1600 Permutation: 49.91% (Range: 45.2% - 53.5%, n=200)
✔ SHAKE-256 (32B): 49.96% | SHA3-512: 49.92% | SHA3-256: 49.71%
49.93%
SAC Optimum: 50.00%
Byte-Value Uniformity

Shannon Entropy Density

Measured live across 2,000 independent ML-KEM-512 ciphertexts pooled into a single byte stream, checking whether output byte values are statistically indistinguishable from uniform random.

✔ Ciphertexts Pooled: 2,000 (768 bytes each)
✔ Total Output Evaluated: 1,536,000 bytes / 12,288,000 bits
✔ Entropy Density: 7.9999 / 8.0000 Bits/Byte
7.9999
Ideal: 8.0000 Bits/Byte
Third-Party Infrastructure Audit

Qualys SSL Labs Architecture Audit

Production API endpoint (api.shatachandrashield.xyz / 16.113.71.35) evaluated on 28 Aug 2026, confirming hardened TLS 1.3/1.2 protocols, post-quantum key exchange, and strict transport security.

✔ Rating: A+
✔ PQC Key Exchange: X25519MLKEM768 (Supported)
✔ Server Certificate: EC 256 bits (SHA384withECDSA)
✔ HSTS: max-age=63072000; includeSubDomains; preload
A+
Qualys Rating
Verify Live Test
Quantum Security Compliance

Wiz Post-Quantum Cryptography Scanner

Live scan verification confirming quantum-resistant cipher suite deployment at the edge boundary, mitigating "Harvest Now, Decrypt Later" attack vectors.

✔ PQC Compliant: True
✔ TLS 1.3 Support: True
✔ PQC Groups Supported: True
✔ Active PQC Group: X25519MLKEM768
COMPLIANT
PQC Validated
Verify Live PQC
Application Security DAST

OWASP ZAP Dynamic Application Security Audit

Automated active and passive vulnerability assessment performed by OWASP ZAP (v2.17.0) on 28 Aug 2026 across api.shatachandrashield.xyz wire endpoints.

✔ High Risk: 0 Alerts
✔ Medium Risk: 0 Alerts
✔ Low Risk: 0 Alerts
✔ Informational: 1 Alert (Storable and Cacheable Content)
0 ALERTS
Clean Security Audit
Validation Target Internal System Test Parameters Log Test ID Result
NIST FIPS 203 KAT Vectors Deterministic ACVP test vectors validating KeyGen, Encapsulation, and Decapsulation byte-exact accuracy across ML-KEM-512, 768, and 1024. NIST-ACVP-KAT ● 180/180 PASS
L5 Engine Pytest Correctness Suite Complete cryptographic test suite covering AEAD, CBD sampling, polynomial ring arithmetic, NTT butterflies, and matrix generation (0 failures, 0 errors in 0.13s). L5-PYTEST-UNIT ● 64/64 PASS
Strict Avalanche Criterion (SAC) Live single-bit input perturbation testing producing a 49.93% bit-flip cascade in ML-KEM-512 ciphertext and 49.91% in Keccak-f1600 permutation. SAC-DIFFUSE-512 ● 49.93% SAC
AVX2 Hardware Vectorization Native instruction inspection via objdump: 809 ymm instructions in ring.so, 372 ymm in ntt.so, and 0 zmm (AVX2 confirmed active, ~10-15% latency drop on NTT path). AVX2-SIMD-OPT ● Hardware Active
FIPS OpenSSL 3.0 AEAD/KDF HKDF-SHA256 (111,125 ops/sec) and AES-256-GCM (401,193 ops/sec) wired via direct C-level FIPS-gated OpenSSL 3.0 binding with deterministic 96-bit nonces. AEAD-KDF-FIPS ● 47/47 PASS
Layer 4 Gateway Wire Protocol Length-prefixed JSON serialization over local Unix Domain Sockets (/tmp/shatachandra_l4.sock) enforcing 1 MiB boundaries, rate limiting (20 burst, 5/sec refill), and fail-closed drops. L4-UDS-GATEWAY ● Live Verified
Central Authority License Gate Dual-layer auth: static installation keys + rotating master key tokens verified against live EC2 authority (api.shatachandrashield.xyz) polling every 30 minutes in background. AUTH-LIC-EC2 ● Live on AWS
Qualys SSL Labs Hardening Layer Automated external security audit of api.shatachandrashield.xyz confirming TLS 1.3, X25519MLKEM768 hybrid key exchange, and max-age 63,072,000s HSTS preload. QUALYS-SSL-A+ ● A+ RATED
OWASP ZAP Core Compliance DAST vulnerability scan verifying schema validation, anti-downgrade defenses, and 0 High / 0 Medium / 0 Low vulnerabilities across all JSON endpoints. ZAP-DAST-2.17 ● 0 ALERTS