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ohhhhhhhhhhh (exclude linux-extra-rootfs.img build artifact)

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Linehu
2026-10-01 23:13:42 +08:00
parent 737a2cb0db
commit 1074962546
533 changed files with 133239 additions and 5460 deletions
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CODE/UTSM/crypto/kdf.c
+26 -14
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@@ -1,19 +1,31 @@
#include <utsm/crypto.h>
#include <utsm/drr.h>
/* kdf.c — 段密钥派生（Phase 9：keyed BLAKE2b）
*
* segment_key = BLAKE2b-256(key=root_key, "UTSMSEGK"||p_uuid||s_uuid||key_epoch)
* root key 不直接加密数据；UUID 作为派生调谐因子（非明文密钥）。
* 确定性：同 (puuid, suuid, epoch) 恒得同 key —— PCKC 缓存正确性依赖此性质。
*/
static u64 mix64(u64 x) {
x ^= x >> 30;
x *= 0xbf58476d1ce4e5b9ULL;
x ^= x >> 27;
x *= 0x94d049bb133111ebULL;
x ^= x >> 31;
return x;
}
#include <utsm/crypto.h>
#include <utsm/blake2b.h>
#include <utsm/drr.h>
void utsm_kdf_segment_key(uuid128_t process_uuid, uuid128_t segment_uuid, u64 key_epoch, utsm_key_material *out_key) {
const u64 *root = drr_get_root_key();
out_key->words[0] = mix64(root[0] ^ process_uuid.hi ^ segment_uuid.lo ^ key_epoch);
out_key->words[1] = mix64(root[1] ^ process_uuid.lo ^ segment_uuid.hi ^ (key_epoch << 1));
out_key->words[2] = mix64(root[2] ^ process_uuid.hi ^ segment_uuid.hi ^ (key_epoch << 7));
out_key->words[3] = mix64(root[3] ^ process_uuid.lo ^ segment_uuid.lo ^ (key_epoch << 13));
u8 root_le[32];
u8 data[8 + 8 + 8 + 8 + 8];
u8 digest[32];
for (int i = 0; i < 4; i++) utsm_store64_le(root_le + 8 * i, root[i]);
utsm_store64_le(data + 0, 0x4B4745534D535455ULL); /* "UTSMSEGK" LE */
utsm_store64_le(data + 8, process_uuid.hi);
utsm_store64_le(data + 16, process_uuid.lo);
utsm_store64_le(data + 24, segment_uuid.hi);
utsm_store64_le(data + 32, segment_uuid.lo);
utsm_store64_le(data + 40, key_epoch);
utsm_blake2b(data, sizeof(data), root_le, 32, digest, 32);
for (int i = 0; i < 4; i++) out_key->words[i] = utsm_load64_le(digest + 8 * i);
}