add encrypting for save files

add libhydrogen for encrypting and decrypting #9
2026-04-03 14:59:37 +02:00
parent abb6556fd4
commit c277ab10d9
68 changed files with 5737 additions and 74 deletions
@@ -0,0 +1,25 @@
+#ifdef __SSE2__
+#    include "gimli-core/sse2.h"
+#else
+#    include "gimli-core/portable.h"
+#endif
+
+static void
+gimli_core_u8(uint8_t state_u8[gimli_BLOCKBYTES], uint8_t tag)
+{
+    state_u8[gimli_BLOCKBYTES - 1] ^= tag;
+#ifndef NATIVE_LITTLE_ENDIAN
+    uint32_t state_u32[12];
+    int      i;
+
+    for (i = 0; i < 12; i++) {
+        state_u32[i] = LOAD32_LE(&state_u8[i * 4]);
+    }
+    gimli_core(state_u32);
+    for (i = 0; i < 12; i++) {
+        STORE32_LE(&state_u8[i * 4], state_u32[i]);
+    }
+#else
+    gimli_core((uint32_t *) (void *) state_u8); /* state_u8 must be properly aligned */
+#endif
+}