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v4.2.1: info correctly reports --pq-only vs hybrid post-quantum mode

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`vaptvupt info` mislabelled full post-quantum (--pq-only, enc_type 0x06)
archives as "PQ Hybrid: YES (ML-KEM-768 + X25519)". Full-PQ archives set
the generic ZUPT_FLAG_PQ_HYBRID header flag (the enc_type byte is what
distinguishes hybrid 0x02 from pure 0x06), but info only checked the flag.

info now seeks to hdr.encryption_header_off, reads the real enc_type from
the encryption-header block, and reports the actual mode: "ML-KEM-768
only, no classical layer" for --pq-only, and hybrid / SDK-v2 / sealed-box
for the others. Reader-side only — no wire-format change; existing 4.2.0
archives are relabelled correctly with no re-encryption.
This commit is contained in:
Cristian Cezar Moisés 2026-07-10 00:20:49 -03:00
commit 9800530d2e
4 changed files with 52 additions and 4 deletions
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doc/vaptvupt.1
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@ -1,7 +1,7 @@
.\" Manpage for vaptvupt (formerly zupt; INPI Brasil trademark rename in v3.0.0)
.\" SPDX-License-Identifier: AGPL-3.0-or-later
.\" Copyright (c) 2025-2026 Cristian Cezar Moisés
.TH VAPTVUPT 1 "July 2026" "vaptvupt 4.2.0" "User Commands"
.TH VAPTVUPT 1 "July 2026" "vaptvupt 4.2.1" "User Commands"
.SH NAME
vaptvupt \- post-quantum backup compression utility (formerly zupt)