1 files changed, 9 insertions, 0 deletions
diff --git a/src/math/bigint/bigint.h b/src/math/bigint/bigint.h
index 9a2513d1b..12a7f1701 100644
--- a/src/math/bigint/bigint.h
+++ b/src/math/bigint/bigint.h
@@ -325,6 +325,15 @@ class BOTAN_DLL BigInt
      const SecureVector<word>& get_reg() const { return reg; }
 
      /**
+     * Assign using a plain word array
+     */
+     void assign(const word x[], size_t length)
+        {
+        reg.resize(length);
+        copy_mem(&reg[0], x, length);
+        }
+
+     /**
      * Increase internal register buffer by n words
      * @param n increase by n words
      */