diff --git a/sha3.c b/sha3.c
index 3e14c9e..8376423 100644
--- a/sha3.c
+++ b/sha3.c
@@ -152,7 +152,7 @@ int sha3_final(void *md, sha3_ctx_t *c)
 
 // compute a SHA-3 hash (md) of given byte length from "in"
 
-unsigned char *sha3(const uint8_t *in, size_t inlen, uint8_t *md, int mdlen)
+void *sha3(const uint8_t *in, size_t inlen, void *md, int mdlen)
 {
     sha3_ctx_t sha3;
 
diff --git a/sha3.h b/sha3.h
index 21e8a4a..3a99308 100644
--- a/sha3.h
+++ b/sha3.h
@@ -30,7 +30,7 @@ int sha3_update(sha3_ctx_t *c, const void *data, size_t len);
 int sha3_final(void *md, sha3_ctx_t *c);    // digest goes to md
 
 // compute a sha3 hash (md) of given byte length from "in"
-unsigned char *sha3(const uint8_t *in, size_t inlen, uint8_t *md, int mdlen);
+void *sha3(const uint8_t *in, size_t inlen, void *md, int mdlen);
 
 #endif
 
diff --git a/tiny_sha3.tgz b/tiny_sha3.tgz
new file mode 100644
index 0000000..ee2063d
Binary files /dev/null and b/tiny_sha3.tgz differ