1 files changed, 18 insertions, 0 deletions
diff --git a/sha3.h b/sha3.h
index a2014c9..864772a 100644
--- a/sha3.h
+++ b/sha3.h
@@ -74,6 +74,24 @@ _Bool kmac256_xof_absorb(sha3_xof_t * const xof, const uint8_t * const msg, cons
 void kmac256_xof_squeeze(sha3_xof_t * const xof, uint8_t * const dst, const size_t len);
 void kmac256_xof_once(const kmac_params_t params, const uint8_t * const src, const size_t src_len, uint8_t * const dst, const size_t dst_len);
 
+typedef struct {
+  const uint8_t *ptr;
+  size_t len;
+} tuplehash_str_t;
+
+typedef struct {
+  const tuplehash_str_t *strs; // strings
+  const size_t num_strs; // number of strings
+  const uint8_t *custom; // customization string
+  const size_t custom_len; // length of customization string, in bytes
+} tuplehash_params_t;
+
+void tuplehash128(const tuplehash_params_t params, uint8_t *dst, const size_t dst_len);
+
+void tuplehash128_xof_init(sha3_xof_t * const xof, const tuplehash_params_t params);
+void tuplehash128_xof_squeeze(sha3_xof_t * const xof, uint8_t *dst, const size_t dst_len);
+void tuplehash128_xof_once(const tuplehash_params_t params, uint8_t *dst, const size_t dst_len);
+
 #ifdef __cplusplus
 }
 #endif /* __cplusplus */