2 files changed, 10 insertions, 1 deletions
diff --git a/src/lib/pk_pad/emsa1/emsa1.cpp b/src/lib/pk_pad/emsa1/emsa1.cpp
index 0031bf263..67f8ab21f 100644
--- a/src/lib/pk_pad/emsa1/emsa1.cpp
+++ b/src/lib/pk_pad/emsa1/emsa1.cpp
@@ -40,6 +40,11 @@ secure_vector<byte> emsa1_encoding(const secure_vector<byte>& msg,
 
 }
 
+EMSA* EMSA1::clone()
+   {
+   return new EMSA1(m_hash->clone());
+   }
+
 void EMSA1::update(const byte input[], size_t length)
    {
    m_hash->update(input, length);
diff --git a/src/lib/pk_pad/emsa1/emsa1.h b/src/lib/pk_pad/emsa1/emsa1.h
index e346167da..5a4b4b372 100644
--- a/src/lib/pk_pad/emsa1/emsa1.h
+++ b/src/lib/pk_pad/emsa1/emsa1.h
@@ -25,8 +25,13 @@ class BOTAN_DLL EMSA1 : public EMSA
       */
       explicit EMSA1(HashFunction* hash) : m_hash(hash) {}
 
+      EMSA* clone() override;
+
    protected:
       size_t hash_output_length() const { return m_hash->output_length(); }
+
+      std::unique_ptr<HashFunction> m_hash;
+
    private:
       void update(const byte[], size_t) override;
       secure_vector<byte> raw_data() override;
@@ -39,7 +44,6 @@ class BOTAN_DLL EMSA1 : public EMSA
                   const secure_vector<byte>& raw,
                   size_t key_bits) override;
 
-      std::unique_ptr<HashFunction> m_hash;
    };
 
 }