algorithms.c: Add basic support for Keccak[1600, n].

This takes the form of a simple object which encapsulates the
Keccak[1600, n] state and allows mix and extract operations (which
correspond to the I/O portions of absorb/squeeze and duplexing) and
step, which actually invokes the permutation to advance the state.

None of this keeps track of rate or capacity limits beyond the obvious
memory-safety checks, so you can really screw yourself if you're not
careful.

diff --git a/catacomb-python.h b/catacomb-python.h
index d7e2543..3b9d8f7 100644 (file)
--- a/catacomb-python.h
+++ b/catacomb-python.h
@@ -69,6 +69,7 @@
 #include <catacomb/sha.h>
 #include <catacomb/sha-mgf.h>
 #include <catacomb/sha-hmac.h>
+#include <catacomb/keccak1600.h>
 
 #include <catacomb/mp.h>
 #include <catacomb/mpint.h>