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diff --git a/fe25519.h b/fe25519.h
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+++ b/fe25519.h
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+/* $OpenBSD: fe25519.h,v 1.3 2013/12/09 11:03:45 markus Exp $ */
+
+/*
+ * Public Domain, Authors: Daniel J. Bernstein, Niels Duif, Tanja Lange,
+ * Peter Schwabe, Bo-Yin Yang.
+ * Copied from supercop-20130419/crypto_sign/ed25519/ref/fe25519.h
+ */
+
+#ifndef FE25519_H
+#define FE25519_H
+
+#include "crypto_api.h"
+
+#define fe25519              crypto_sign_ed25519_ref_fe25519
+#define fe25519_freeze       crypto_sign_ed25519_ref_fe25519_freeze
+#define fe25519_unpack       crypto_sign_ed25519_ref_fe25519_unpack
+#define fe25519_pack         crypto_sign_ed25519_ref_fe25519_pack
+#define fe25519_iszero       crypto_sign_ed25519_ref_fe25519_iszero
+#define fe25519_iseq_vartime crypto_sign_ed25519_ref_fe25519_iseq_vartime
+#define fe25519_cmov         crypto_sign_ed25519_ref_fe25519_cmov
+#define fe25519_setone       crypto_sign_ed25519_ref_fe25519_setone
+#define fe25519_setzero      crypto_sign_ed25519_ref_fe25519_setzero
+#define fe25519_neg          crypto_sign_ed25519_ref_fe25519_neg
+#define fe25519_getparity    crypto_sign_ed25519_ref_fe25519_getparity
+#define fe25519_add          crypto_sign_ed25519_ref_fe25519_add
+#define fe25519_sub          crypto_sign_ed25519_ref_fe25519_sub
+#define fe25519_mul          crypto_sign_ed25519_ref_fe25519_mul
+#define fe25519_square       crypto_sign_ed25519_ref_fe25519_square
+#define fe25519_invert       crypto_sign_ed25519_ref_fe25519_invert
+#define fe25519_pow2523      crypto_sign_ed25519_ref_fe25519_pow2523
+
+typedef struct 
+{
+  crypto_uint32 v[32]; 
+}
+fe25519;
+
+void fe25519_freeze(fe25519 *r);
+
+void fe25519_unpack(fe25519 *r, const unsigned char x[32]);
+
+void fe25519_pack(unsigned char r[32], const fe25519 *x);
+
+int fe25519_iszero(const fe25519 *x);
+
+int fe25519_iseq_vartime(const fe25519 *x, const fe25519 *y);
+
+void fe25519_cmov(fe25519 *r, const fe25519 *x, unsigned char b);
+
+void fe25519_setone(fe25519 *r);
+
+void fe25519_setzero(fe25519 *r);
+
+void fe25519_neg(fe25519 *r, const fe25519 *x);
+
+unsigned char fe25519_getparity(const fe25519 *x);
+
+void fe25519_add(fe25519 *r, const fe25519 *x, const fe25519 *y);
+
+void fe25519_sub(fe25519 *r, const fe25519 *x, const fe25519 *y);
+
+void fe25519_mul(fe25519 *r, const fe25519 *x, const fe25519 *y);
+
+void fe25519_square(fe25519 *r, const fe25519 *x);
+
+void fe25519_invert(fe25519 *r, const fe25519 *x);
+
+void fe25519_pow2523(fe25519 *r, const fe25519 *x);
+
+#endif