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feat: U4 ciphertext page dump tool

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- utrw/debug.c: utrw_debug_dump_page(slot,page,offset) — kernel debug-privileged dump of 64B ciphertext + decrypted plaintext hex to serial (PCKC key derive, no capability path)
- selftest demo: dump at offset 128 shows plaintext 'deshab utsm sealed memory selftest' vs unrelated ciphertext; SELFTEST PASS (.build_tmp/qemu_serial_u4dump.log)
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Linehu
2026-10-02 14:40:26 +08:00
parent 42fc06439c
commit 7925c09677
12 changed files with 123 additions and 3 deletions
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docs/STATUS.md
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@@ -28,6 +28,7 @@
| UTRW Fast Path | ✅ | capability→PCKC→line 解密→seqlock | `utrw/read.c` |
| UTRW Slow Path（U2） | ✅ | EPOCH 刷新 / KEY_MISS 重派生 / POISONED+MAC_FAILED→DRR / STALE_CAP 拒绝；全分支 selftest PASS | `utrw/slow_path.c` + `.build_tmp/qemu_serial_u2slowpath.log` |
| `@sealed` 段标记（U3） | ⬜ | 未实现 | — |
| 密文页 dump（U4） | ✅ | `utrw_debug_dump_page(slot,page,offset)`：串口输出 64B 密文/明文 hex 对照（selftest 内置演示） | `.build_tmp/qemu_serial_u4dump.log` |
| selftest（U5） | 🔶 | KAT/段表/越界已覆盖；chacha20 KAT 间歇 FAIL 待修 | `test/utsm_selftest.c` |
| 真实加密原语 | 🔶 | chacha20/KDF/MAC 已落（Phase 9 早期），PCKC schedule 待接 | `crypto/` |