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Diffstat (limited to 'libs/libsignal/src/curve25519/ed25519/additions/ge_neg.c')
-rw-r--r--libs/libsignal/src/curve25519/ed25519/additions/ge_neg.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/libs/libsignal/src/curve25519/ed25519/additions/ge_neg.c b/libs/libsignal/src/curve25519/ed25519/additions/ge_neg.c
new file mode 100644
index 0000000000..d679713fe0
--- /dev/null
+++ b/libs/libsignal/src/curve25519/ed25519/additions/ge_neg.c
@@ -0,0 +1,15 @@
+#include "crypto_additions.h"
+#include "ge.h"
+
+/*
+return r = -p
+*/
+
+
+void ge_neg(ge_p3* r, const ge_p3 *p)
+{
+ fe_neg(r->X, p->X);
+ fe_copy(r->Y, p->Y);
+ fe_copy(r->Z, p->Z);
+ fe_neg(r->T, p->T);
+}