X-Git-Url: https://git.distorted.org.uk/~mdw/catacomb/blobdiff_plain/609affae0305784d87f2357488fba35699a04098..10f61ef8a2deafb3b801786ad37338c410ed21d7:/symm/keccak1600.h

diff --git a/symm/keccak1600.h b/symm/keccak1600.h
index 2867be96..f5aad98d 100644
--- a/symm/keccak1600.h
+++ b/symm/keccak1600.h
@@ -112,6 +112,26 @@ extern void keccak1600_init(keccak1600_state */*s*/);
 extern void keccak1600_mix(keccak1600_state */*s*/,
 			   const kludge64 */*p*/, size_t /*n*/);
 
+/* --- @keccak1600_set@ --- *
+ *
+ * Arguments:	@keccak1600_state *s@ = a state to update
+ *		@const kludge64 *p@ = pointer to 64-bit words to mix in
+ *		@size_t n@ = size of the input, in 64-bit words
+ *
+ * Returns:	---
+ *
+ * Use:		Stores data into a %$\Keccak[r, 1600 - r]$% state.  Note that
+ *		it's the caller's responsibility to pass in no more than
+ *		%$r$% bits of data.
+ *
+ *		This is not the operation you wanted for ordinary hashing.
+ *		It's provided for the use of higher-level protocols which use
+ *		duplexing and other fancy sponge features.
+ */
+
+extern void keccak1600_set(keccak1600_state */*s*/,
+			   const kludge64 */*p*/, size_t /*n*/);
+
 /* --- @keccak1600_extract@ --- *
  *
  * Arguments:	@const keccak1600_state *s@ = a state to extract output from