python-3.6.zip added from Github

README.cosmo contains the necessary links.

third_party/python/Modules/_sha3/kcp/KeccakSponge.c

@@ -0,0 +1,92 @@
+/*
+Implementation by the Keccak, Keyak and Ketje Teams, namely, Guido Bertoni,
+Joan Daemen, Michaël Peeters, Gilles Van Assche and Ronny Van Keer, hereby
+denoted as "the implementer".
+
+For more information, feedback or questions, please refer to our websites:
+http://keccak.noekeon.org/
+http://keyak.noekeon.org/
+http://ketje.noekeon.org/
+
+To the extent possible under law, the implementer has waived all copyright
+and related or neighboring rights to the source code in this file.
+http://creativecommons.org/publicdomain/zero/1.0/
+*/
+
+#include "KeccakSponge.h"
+
+#ifdef KeccakReference
+    #include "displayIntermediateValues.h"
+#endif
+
+#ifndef KeccakP200_excluded
+    #include "KeccakP-200-SnP.h"
+
+    #define prefix KeccakWidth200
+    #define SnP KeccakP200
+    #define SnP_width 200
+    #define SnP_Permute KeccakP200_Permute_18rounds
+    #if defined(KeccakF200_FastLoop_supported)
+        #define SnP_FastLoop_Absorb KeccakF200_FastLoop_Absorb
+    #endif
+        #include "KeccakSponge.inc"
+    #undef prefix
+    #undef SnP
+    #undef SnP_width
+    #undef SnP_Permute
+    #undef SnP_FastLoop_Absorb
+#endif
+
+#ifndef KeccakP400_excluded
+    #include "KeccakP-400-SnP.h"
+
+    #define prefix KeccakWidth400
+    #define SnP KeccakP400
+    #define SnP_width 400
+    #define SnP_Permute KeccakP400_Permute_20rounds
+    #if defined(KeccakF400_FastLoop_supported)
+        #define SnP_FastLoop_Absorb KeccakF400_FastLoop_Absorb
+    #endif
+        #include "KeccakSponge.inc"
+    #undef prefix
+    #undef SnP
+    #undef SnP_width
+    #undef SnP_Permute
+    #undef SnP_FastLoop_Absorb
+#endif
+
+#ifndef KeccakP800_excluded
+    #include "KeccakP-800-SnP.h"
+
+    #define prefix KeccakWidth800
+    #define SnP KeccakP800
+    #define SnP_width 800
+    #define SnP_Permute KeccakP800_Permute_22rounds
+    #if defined(KeccakF800_FastLoop_supported)
+        #define SnP_FastLoop_Absorb KeccakF800_FastLoop_Absorb
+    #endif
+        #include "KeccakSponge.inc"
+    #undef prefix
+    #undef SnP
+    #undef SnP_width
+    #undef SnP_Permute
+    #undef SnP_FastLoop_Absorb
+#endif
+
+#ifndef KeccakP1600_excluded
+    #include "KeccakP-1600-SnP.h"
+
+    #define prefix KeccakWidth1600
+    #define SnP KeccakP1600
+    #define SnP_width 1600
+    #define SnP_Permute KeccakP1600_Permute_24rounds
+    #if defined(KeccakF1600_FastLoop_supported)
+        #define SnP_FastLoop_Absorb KeccakF1600_FastLoop_Absorb
+    #endif
+        #include "KeccakSponge.inc"
+    #undef prefix
+    #undef SnP
+    #undef SnP_width
+    #undef SnP_Permute
+    #undef SnP_FastLoop_Absorb
+#endif