1 files changed, 39 insertions, 0 deletions

diff --git a/src/math/subgroups.h b/src/math/subgroups.h
new file mode 100644
index 0000000..bd9b29d
--- /dev/null
+++ b/src/math/subgroups.h
@@ -0,0 +1,39 @@
+/*
+ * ecgen, tool for generating Elliptic curve domain parameters
+ * Copyright (C) 2017 J08nY
+ */
+/**
+ * @file subgroups.h
+ */
+#ifndef ECGEN_SUBGROUPS_H
+#define ECGEN_SUBGROUPS_H
+
+#include <pari/pari.h>
+#include "gen/types.h"
+
+/**
+ * @brief Enumerates prime subgroup orders of a given finite group.
+ * @param order group order
+ * @param cfg
+ * @return
+ */
+GEN subgroups_prime(GEN i, const config_t *cfg);
+
+/**
+ * @brief Enumerates nonprime subgroup orders of a given finite group.
+ * @param order group order
+ * @param cfg
+ * @return
+ */
+GEN subgroups_nonprime(GEN order, const config_t *cfg);
+
+/**
+ * @brief Enumerates all subgroup orders of a given finite group.
+ * @param order group order
+ * @param cfg
+ * @return
+ */
+GEN subgroups_all(GEN order, const config_t *cfg);
+
+
+#endif //ECGEN_SUBGROUPS_H