Add accidentally omitted params.h

Previously this was generated and thus gitignored

.gitignore

@@ -13,6 +13,3 @@ test/test_xmssmt_core_XMSSMT*
 test/test_xmssmt_core_fast_XMSSMT*
 test/speed
 test/gen_testvectors
-params_XMSS_*.h
-params_XMSSMT_*.h
-params.h

Makefile

@@ -10,10 +10,6 @@ test/test_xmssmt_core \
 test/test_xmssmt
 
 .PHONY: clean
-.PRECIOUS: params_%.h
-
-params_%.h: params.h.py
-	python3 params.h.py $(patsubst params_%.h,%,$@) > $@
 
 test/test_wots: params.c hash.c fips202.c hash_address.c randombytes.c wots.c xmss_commons.c test/test_wots.c params.h hash.h fips202.h hash_address.h randombytes.h wots.h xmss_commons.h
 	$(CC) $(CFLAGS) params.c hash.c fips202.c hash_address.c randombytes.c wots.c xmss_commons.c test/test_wots.c -o $@ -lcrypto -lm
@@ -44,7 +40,3 @@ clean:
 	-rm test/test_xmssmt_core
 	-rm test/test_xmssmt_core_fast
 	-rm test/test_xmssmt
-
-distclean: clean
-	-rm params.h
-	-rm params_XMSS*.h

params.h

@@ -0,0 +1,36 @@
+#ifndef PARAMS_H
+#define PARAMS_H
+
+#include <stdint.h>
+
+// These are merely internal identifiers for the supported hash functions
+#define XMSS_SHA2 0
+#define XMSS_SHAKE 1
+
+// This is a consequence of the OID definitions in the draft, used for parsing
+#define XMSS_OID_LEN 4
+
+// This structure will be populated when calling xmss[mt]_parse_oid
+typedef struct {
+    unsigned int func;
+    unsigned int n;
+    unsigned int wots_w;
+    unsigned int wots_log_w;
+    unsigned int wots_len1;
+    unsigned int wots_len2;
+    unsigned int wots_len;
+    unsigned int wots_keysize;
+    unsigned int full_height;
+    unsigned int tree_height;
+    unsigned int d;
+    unsigned int index_len;
+    unsigned int bytes;
+    unsigned int publickey_bytes;
+    unsigned int privatekey_bytes;
+    unsigned int bds_k;
+} xmss_params;
+
+int xmss_parse_oid(xmss_params *params, const uint32_t oid);
+int xmssmt_parse_oid(xmss_params *params, const uint32_t oid);
+
+#endif