preparing to build tox from sources

1 files changed, 26 insertions, 0 deletions

diff --git a/libs/libsodium/src/crypto_scalarmult/curve25519/sandy2x/fe.h b/libs/libsodium/src/crypto_scalarmult/curve25519/sandy2x/fe.h
new file mode 100644
index 0000000000..b1115f8691
--- /dev/null
+++ b/libs/libsodium/src/crypto_scalarmult/curve25519/sandy2x/fe.h
@@ -0,0 +1,26 @@
+/*
+   This file is adapted from ref10/fe.h:
+   All the redundant functions are removed.
+*/
+
+#ifndef fe_H
+#define fe_H
+
+#include <stdint.h>
+#include <stdlib.h>
+
+typedef uint64_t fe[10];
+
+/*
+fe means field element.
+Here the field is \Z/(2^255-19).
+An element t, entries t[0]...t[9], represents the integer
+t[0]+2^26 t[1]+2^51 t[2]+2^77 t[3]+2^102 t[4]+...+2^230 t[9].
+Bounds on each t[i] vary depending on context.
+*/
+
+#define fe_frombytes crypto_scalarmult_curve25519_sandy2x_fe_frombytes
+
+extern void fe_frombytes(fe, const unsigned char *);
+
+#endif