ohhhhhhhhhhh (exclude linux-extra-rootfs.img build artifact)
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@@ -14,4 +14,17 @@ void utsm_kdf_segment_key(uuid128_t process_uuid, uuid128_t segment_uuid, u64 ke
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u64 utsm_make_tweak(u64 tweak_seed, u64 line_index, u64 key_epoch);
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void utsm_crypt_line(const utsm_key_material *key, u64 tweak, const u8 *in, u8 *out);
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/* ===================================================================
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* Phase 9 扩展:真实加密原语服务(尾部追加,ABI 兼容)
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* stream = ChaCha20 block(RFC 8439),hash/KDF/MAC = BLAKE2b(RFC 7693)
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* =================================================================== */
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/* ChaCha20 block function:64B keystream。
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* counter=0 用法下 nonce=tweak 即可保证 (key,nonce) 唯一。 */
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void utsm_chacha20_block(const u32 key_words[8], u64 nonce, u64 counter, u8 out[64]);
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/* 4KB 密文页 MAC:keyed BLAKE2b(key=root_key, domain||seg_slot||page||epoch||data),
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* 截断 64 位。root_key 为 4×u64(DRR root key)。 */
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u64 utsm_page_mac(const u64 *root_key, u32 seg_slot, u64 page_index, u64 key_epoch, const void *page);
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#endif
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