Simplify a common case BigInt constructor

2 files changed, 13 insertions, 1 deletions

diff --git a/src/lib/math/bigint/bigint.cpp b/src/lib/math/bigint/bigint.cpp
index a42707e07..694c7afab 100644
--- a/src/lib/math/bigint/bigint.cpp
+++ b/src/lib/math/bigint/bigint.cpp
@@ -80,6 +80,11 @@ BigInt::BigInt(const std::string& str)
    else         set_sign(Positive);
    }
 
+BigInt::BigInt(const uint8_t input[], size_t length)
+   {
+   binary_decode(input, length);
+   }
+
 /*
 * Construct a BigInt from an encoded BigInt
 */
diff --git a/src/lib/math/bigint/bigint.h b/src/lib/math/bigint/bigint.h
index 3f0eb8523..56b907d80 100644
--- a/src/lib/math/bigint/bigint.h
+++ b/src/lib/math/bigint/bigint.h
@@ -74,9 +74,16 @@ class BOTAN_PUBLIC_API(2,0) BigInt final
      * Create a BigInt from an integer in a byte array
      * @param buf the byte array holding the value
      * @param length size of buf
+     */
+     BigInt(const uint8_t buf[], size_t length);
+
+     /**
+     * Create a BigInt from an integer in a byte array
+     * @param buf the byte array holding the value
+     * @param length size of buf
      * @param base is the number base of the integer in buf
      */
-     BigInt(const uint8_t buf[], size_t length, Base base = Binary);
+     BigInt(const uint8_t buf[], size_t length, Base base);
 
      /**
      * Create a BigInt from an array of words