First version of Threefish512-CTR with BLAKE3-MAC & a custom shamirs secret sharing port alongside C bridges with test vectors & Compilation instructions

2026-01-13 21:23:34 +01:00
parent 81dbdf451f
commit 99c6a7b6a2
142 changed files with 28312 additions and 0 deletions
--- a/crypto/threefish512_ctr/exts/blake3.h
+++ b/crypto/threefish512_ctr/exts/blake3.h
@@ -0,0 +1,86 @@
+#ifndef BLAKE3_H
+#define BLAKE3_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+#if !defined(BLAKE3_API)
+# if defined(_WIN32) || defined(__CYGWIN__)
+#   if defined(BLAKE3_DLL)
+#     if defined(BLAKE3_DLL_EXPORTS)
+#       define BLAKE3_API __declspec(dllexport)
+#     else
+#       define BLAKE3_API __declspec(dllimport)
+#     endif
+#     define BLAKE3_PRIVATE
+#   else
+#     define BLAKE3_API
+#     define BLAKE3_PRIVATE
+#   endif
+# elif __GNUC__ >= 4
+#   define BLAKE3_API __attribute__((visibility("default")))
+#   define BLAKE3_PRIVATE __attribute__((visibility("hidden")))
+# else
+#   define BLAKE3_API
+#   define BLAKE3_PRIVATE
+# endif
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define BLAKE3_VERSION_STRING "1.8.3"
+#define BLAKE3_KEY_LEN 32
+#define BLAKE3_OUT_LEN 32
+#define BLAKE3_BLOCK_LEN 64
+#define BLAKE3_CHUNK_LEN 1024
+#define BLAKE3_MAX_DEPTH 54
+
+// This struct is a private implementation detail. It has to be here because
+// it's part of the blake3_hasher structure defined below.
+typedef struct {
+  uint32_t cv[8];
+  uint64_t chunk_counter;
+  uint8_t buf[BLAKE3_BLOCK_LEN];
+  uint8_t buf_len;
+  uint8_t blocks_compressed;
+  uint8_t flags;
+} blake3_chunk_state;
+
+typedef struct {
+  uint32_t key[8];
+  blake3_chunk_state chunk;
+  uint8_t cv_stack_len;
+  // The stack size is MAX_DEPTH + 1 because we do lazy merging. For example,
+  // with 7 chunks, we have 3 entries in the stack. Adding an 8th chunk
+  // requires a 4th entry, rather than merging everything down to 1, because we
+  // don't know whether more input is coming. This is different from how the
+  // reference implementation does things.
+  uint8_t cv_stack[(BLAKE3_MAX_DEPTH + 1) * BLAKE3_OUT_LEN];
+} blake3_hasher;
+
+BLAKE3_API const char *blake3_version(void);
+BLAKE3_API void blake3_hasher_init(blake3_hasher *self);
+BLAKE3_API void blake3_hasher_init_keyed(blake3_hasher *self,
+                                         const uint8_t key[BLAKE3_KEY_LEN]);
+BLAKE3_API void blake3_hasher_init_derive_key(blake3_hasher *self, const char *context);
+BLAKE3_API void blake3_hasher_init_derive_key_raw(blake3_hasher *self, const void *context,
+                                                  size_t context_len);
+BLAKE3_API void blake3_hasher_update(blake3_hasher *self, const void *input,
+                                     size_t input_len);
+#if defined(BLAKE3_USE_TBB)
+BLAKE3_API void blake3_hasher_update_tbb(blake3_hasher *self, const void *input,
+                                         size_t input_len);
+#endif // BLAKE3_USE_TBB
+BLAKE3_API void blake3_hasher_finalize(const blake3_hasher *self, uint8_t *out,
+                                       size_t out_len);
+BLAKE3_API void blake3_hasher_finalize_seek(const blake3_hasher *self, uint64_t seek,
+                                            uint8_t *out, size_t out_len);
+BLAKE3_API void blake3_hasher_reset(blake3_hasher *self);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* BLAKE3_H */