Add BLAKE3 hash function

CPP/Common/Blake3Reg.cpp

@@ -0,0 +1,43 @@
+// Blake3Reg.cpp /TR 2021-04-06
+
+#include "StdAfx.h"
+
+#include "../../C/CpuArch.h"
+
+EXTERN_C_BEGIN
+#include "../../C/hashes/blake3.h"
+EXTERN_C_END
+
+#include "../Common/MyCom.h"
+#include "../7zip/Common/RegisterCodec.h"
+
+// BLAKE3
+class CBLAKE3Hasher:
+  public IHasher,
+  public CMyUnknownImp
+{
+  blake3_hasher _ctx;
+  Byte mtDummy[1 << 7];
+
+public:
+  CBLAKE3Hasher() { blake3_hasher_init(&_ctx); }
+
+  MY_UNKNOWN_IMP1(IHasher)
+  INTERFACE_IHasher(;)
+};
+
+STDMETHODIMP_(void) CBLAKE3Hasher::Init() throw()
+{
+  blake3_hasher_init(&_ctx);
+}
+
+STDMETHODIMP_(void) CBLAKE3Hasher::Update(const void *data, UInt32 size) throw()
+{
+  blake3_hasher_update(&_ctx, data, size);
+}
+
+STDMETHODIMP_(void) CBLAKE3Hasher::Final(Byte *digest) throw()
+{
+  blake3_hasher_finalize(&_ctx, digest, BLAKE3_OUT_LEN);
+}
+REGISTER_HASHER(CBLAKE3Hasher, 0x20a, "BLAKE3", BLAKE3_OUT_LEN)