Initial release of Intel SGX for Linux.

This release is used in conjunction with the linux-sgx-driver Intial release:
https://github.com/01org/linux-sgx-driver
commit-id: 0e865ce5e6b297a787bcdc12d98bada8174be6d7

Intel-id: 33399

Signed-off-by: Angie Chinchilla <angie.v.chinchilla@intel.com>

sdk/tlibcrypto/sgx_ecc256_common.cpp

@@ -0,0 +1,129 @@
+/*
+ * Copyright (C) 2011-2016 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+
+#include "sgx_ecc256_common.h"
+
+
+IppStatus sgx_ipp_newBN(const Ipp32u *p_data, int size_in_bytes, IppsBigNumState **p_new_BN)
+{
+    IppsBigNumState *pBN = 0;
+    int bn_size = 0;
+
+    if (p_new_BN == NULL || (size_in_bytes <= 0) || ((size_in_bytes % sizeof(Ipp32u)) != 0))
+        return ippStsBadArgErr;
+
+    // Get the size of the IppsBigNumState context in bytes
+    IppStatus error_code = ippsBigNumGetSize(size_in_bytes/(int)sizeof(Ipp32u), &bn_size);
+    if (error_code != ippStsNoErr)
+    {
+        *p_new_BN = 0;
+        return error_code;
+    }
+    pBN = (IppsBigNumState *)malloc(bn_size);
+    if (!pBN)
+    {
+        error_code = ippStsMemAllocErr;
+        *p_new_BN = 0;
+        return error_code;
+    }
+    // Initialize context and partition allocated buffer
+    error_code = ippsBigNumInit(size_in_bytes/(int)sizeof(Ipp32u), pBN);
+    if (error_code != ippStsNoErr)
+    {
+        free(pBN);
+        *p_new_BN = 0;
+        return error_code;
+    }
+    if (p_data)
+    {
+        error_code = ippsSet_BN(IppsBigNumPOS, size_in_bytes/(int)sizeof(Ipp32u), p_data, pBN);
+        if (error_code != ippStsNoErr)
+        {
+            *p_new_BN = 0;
+            free(pBN);
+            return error_code;
+        }
+    }
+
+
+    *p_new_BN = pBN;
+    return error_code;
+}
+
+void sgx_ipp_secure_free_BN(IppsBigNumState *pBN, int size_in_bytes)
+{
+    if (pBN == NULL || size_in_bytes <= 0 || ((size_in_bytes % sizeof(Ipp32u)) != 0))
+    {
+        if (pBN)
+        {
+            free(pBN);
+        }
+        return;
+    }
+    int bn_size = 0;
+
+    // Get the size of the IppsBigNumState context in bytes
+    // Since we have checked the size_in_bytes before and the &bn_size is not NULL, ippsBigNumGetSize never returns failure
+    IppStatus error_code = ippsBigNumGetSize(size_in_bytes/(int)sizeof(Ipp32u), &bn_size);
+    if (error_code != ippStsNoErr)
+    {
+        free(pBN);
+        return;
+    }
+    // Clear the buffer before free.
+    memset_s(pBN, bn_size, 0, bn_size);
+    free(pBN);
+    return;
+}
+
+IppStatus __STDCALL sgx_ipp_DRNGen(Ipp32u* pRandBNU, int nBits, void* pCtx)
+{
+    sgx_status_t sgx_ret;
+    UNUSED(pCtx);
+
+    if (0 != nBits % 8)
+    {
+        // Must be byte aligned
+        return ippStsSizeErr;
+    }
+
+    if (!pRandBNU)
+    {
+        return ippStsNullPtrErr;
+    }
+    sgx_ret = sgx_read_rand((uint8_t*)pRandBNU, (uint32_t)nBits / 8);
+    if (SGX_SUCCESS != sgx_ret)
+    {
+        return ippStsErr;
+    }
+    return ippStsNoErr;
+}