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+/* $OpenBSD: */
+
+/* Public Domain, 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