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zeekay
fdccc13f2a
Closes the gap on the KEM side parallel to Comet on the signature side. HQC's hardness rests on Syndrome Decoding on random quasi-cyclic codes (NP-hard, no known classical or quantum polynomial-time attack), so a structural break against MLWE does not compromise HQC and vice-versa. Three modes pinned to NIST IR 8528 §4.1: HQC-128 (Cat 1), HQC-192 (Cat 3), HQC-256 (Cat 5). Shared secret is 64 B for all modes (distinct from ML-KEM's 32 B). Default build returns ErrBackendNotWired; activate via -tags=hqc_pqclean (cgo to PQClean) or -tags=hqc_circl (when Cloudflare CIRCL ships HQC).
31 lines
953 B
Go
31 lines
953 B
Go
// Copyright (C) 2026, Lux Industries Inc. All rights reserved.
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// See the file LICENSE for licensing terms.
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//go:build !hqc_circl && !hqc_pqclean
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package hqc
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import "io"
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// backend_stub.go — default build (no HQC backend wired).
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//
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// Every entry point returns ErrBackendNotWired. Build with one of:
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// -tags=hqc_pqclean cgo binding to PQClean's HQC reference C
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// -tags=hqc_circl Cloudflare CIRCL Go implementation (when shipped)
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//
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// The stub keeps the package buildable on hosts where the backend
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// libraries aren't installed (same discipline as luxfi/accel's weak-stub
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// fallback for native GPU libs).
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func backendKeyGen(_ Mode, _ io.Reader) (*PrivateKey, error) {
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return nil, ErrBackendNotWired
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}
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func backendEncapsulate(_ *PublicKey, _ io.Reader) (*Ciphertext, []byte, error) {
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return nil, nil, ErrBackendNotWired
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}
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func backendDecapsulate(_ *PrivateKey, _ *Ciphertext) ([]byte, error) {
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return nil, ErrBackendNotWired
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}
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