1 files changed, 39 insertions, 0 deletions
diff --git a/comm/third_party/botan/src/lib/utils/poly_dbl/poly_dbl.h b/comm/third_party/botan/src/lib/utils/poly_dbl/poly_dbl.h
new file mode 100644
index 0000000000..7d9f523319
--- /dev/null
+++ b/comm/third_party/botan/src/lib/utils/poly_dbl/poly_dbl.h
@@ -0,0 +1,39 @@
+/*
+* (C) 2017 Jack Lloyd
+*
+* Botan is released under the Simplified BSD License (see license.txt)
+*/
+
+#ifndef BOTAN_POLY_DBL_H_
+#define BOTAN_POLY_DBL_H_
+
+#include <botan/types.h>
+
+namespace Botan {
+
+/**
+* Polynomial doubling in GF(2^n)
+*/
+void BOTAN_TEST_API poly_double_n(uint8_t out[], const uint8_t in[], size_t n);
+
+/**
+* Returns true iff poly_double_n is implemented for this size.
+*/
+inline bool poly_double_supported_size(size_t n)
+   {
+   return (n == 8 || n == 16 || n == 24 || n == 32 || n == 64 || n == 128);
+   }
+
+inline void poly_double_n(uint8_t buf[], size_t n)
+   {
+   return poly_double_n(buf, buf, n);
+   }
+
+/*
+* Little endian convention - used for XTS
+*/
+void BOTAN_TEST_API poly_double_n_le(uint8_t out[], const uint8_t in[], size_t n);
+
+}
+
+#endif