1 files changed, 60 insertions, 0 deletions
diff --git a/lib/engine/openssl/bn_wrap.h b/lib/engine/openssl/bn_wrap.h
new file mode 100644
index 000000000..12bcec152
--- /dev/null
+++ b/lib/engine/openssl/bn_wrap.h
@@ -0,0 +1,60 @@
+/*
+* OpenSSL BN Wrapper
+* (C) 1999-2007 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#ifndef BOTAN_OPENSSL_BN_WRAP_H__
+#define BOTAN_OPENSSL_BN_WRAP_H__
+
+#include <botan/bigint.h>
+#include <openssl/bn.h>
+
+namespace Botan {
+
+/**
+* Lightweight OpenSSL BN wrapper. For internal use only.
+*/
+class OSSL_BN
+   {
+   public:
+      BigInt to_bigint() const;
+      void encode(byte[], size_t) const;
+      size_t bytes() const;
+
+      secure_vector<byte> to_bytes() const
+         { return BigInt::encode_locked(to_bigint()); }
+
+      OSSL_BN& operator=(const OSSL_BN&);
+
+      OSSL_BN(const OSSL_BN&);
+      OSSL_BN(const BigInt& = 0);
+      OSSL_BN(const byte[], size_t);
+      ~OSSL_BN();
+
+      BIGNUM* ptr() const { return m_bn; }
+   private:
+      BIGNUM* m_bn;
+   };
+
+/**
+* Lightweight OpenSSL BN_CTX wrapper. For internal use only.
+*/
+class OSSL_BN_CTX
+   {
+   public:
+      OSSL_BN_CTX& operator=(const OSSL_BN_CTX&);
+
+      OSSL_BN_CTX();
+      OSSL_BN_CTX(const OSSL_BN_CTX&);
+      ~OSSL_BN_CTX();
+
+      BN_CTX* ptr() const { return m_ctx; }
+   private:
+      BN_CTX* m_ctx;
+   };
+
+}
+
+#endif