From 2af6c4499013911d7b01ce3ce1acc5aa8fef15ab Mon Sep 17 00:00:00 2001
From: lloyd <lloyd@randombit.net>
Date: Tue, 11 Nov 2008 19:20:32 +0000
Subject: Move most of the remaining libstate code to pk_engine.cpp, move
 engines back to the toplevel since most othe dependencies have been removed
 now (except get_cipher which still needs changes)

---
 src/engine/openssl/bn_wrap.cpp | 114 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 114 insertions(+)
 create mode 100644 src/engine/openssl/bn_wrap.cpp

(limited to 'src/engine/openssl/bn_wrap.cpp')

diff --git a/src/engine/openssl/bn_wrap.cpp b/src/engine/openssl/bn_wrap.cpp
new file mode 100644
index 000000000..4f7ea0078
--- /dev/null
+++ b/src/engine/openssl/bn_wrap.cpp
@@ -0,0 +1,114 @@
+/*************************************************
+* OpenSSL BN Wrapper Source File                 *
+* (C) 1999-2007 Jack Lloyd                       *
+*************************************************/
+
+#include <botan/bn_wrap.h>
+
+namespace Botan {
+
+/*************************************************
+* OSSL_BN Constructor                            *
+*************************************************/
+OSSL_BN::OSSL_BN(const BigInt& in)
+   {
+   value = BN_new();
+   SecureVector<byte> encoding = BigInt::encode(in);
+   if(in != 0)
+      BN_bin2bn(encoding, encoding.size(), value);
+   }
+
+/*************************************************
+* OSSL_BN Constructor                            *
+*************************************************/
+OSSL_BN::OSSL_BN(const byte in[], u32bit length)
+   {
+   value = BN_new();
+   BN_bin2bn(in, length, value);
+   }
+
+/*************************************************
+* OSSL_BN Copy Constructor                       *
+*************************************************/
+OSSL_BN::OSSL_BN(const OSSL_BN& other)
+   {
+   value = BN_dup(other.value);
+   }
+
+/*************************************************
+* OSSL_BN Destructor                             *
+*************************************************/
+OSSL_BN::~OSSL_BN()
+   {
+   BN_clear_free(value);
+   }
+
+/*************************************************
+* OSSL_BN Assignment Operator                    *
+*************************************************/
+OSSL_BN& OSSL_BN::operator=(const OSSL_BN& other)
+   {
+   BN_copy(value, other.value);
+   return (*this);
+   }
+
+/*************************************************
+* Export the BIGNUM as a bytestring              *
+*************************************************/
+void OSSL_BN::encode(byte out[], u32bit length) const
+   {
+   BN_bn2bin(value, out + (length - bytes()));
+   }
+
+/*************************************************
+* Return the number of significant bytes         *
+*************************************************/
+u32bit OSSL_BN::bytes() const
+   {
+   return BN_num_bytes(value);
+   }
+
+/*************************************************
+* OpenSSL to BigInt Conversions                  *
+*************************************************/
+BigInt OSSL_BN::to_bigint() const
+   {
+   SecureVector<byte> out(bytes());
+   BN_bn2bin(value, out);
+   return BigInt::decode(out);
+   }
+
+/*************************************************
+* OSSL_BN_CTX Constructor                        *
+*************************************************/
+OSSL_BN_CTX::OSSL_BN_CTX()
+   {
+   value = BN_CTX_new();
+   }
+
+/*************************************************
+* OSSL_BN_CTX Copy Constructor                   *
+*************************************************/
+OSSL_BN_CTX::OSSL_BN_CTX(const OSSL_BN_CTX&)
+   {
+   value = BN_CTX_new();
+   }
+
+/*************************************************
+* OSSL_BN_CTX Destructor                         *
+*************************************************/
+OSSL_BN_CTX::~OSSL_BN_CTX()
+   {
+   BN_CTX_free(value);
+   }
+
+/*************************************************
+* OSSL_BN_CTX Assignment Operator                *
+*************************************************/
+OSSL_BN_CTX& OSSL_BN_CTX::operator=(const OSSL_BN_CTX&)
+   {
+   value = BN_CTX_new();
+   return (*this);
+   }
+
+}
-- 
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