1 files changed, 142 insertions, 0 deletions

diff --git a/src/lib/libcrypto/engine/eng_rdrand.c b/src/lib/libcrypto/engine/eng_rdrand.c
new file mode 100644
index 0000000000..a9ba5ae6f9
--- /dev/null
+++ b/src/lib/libcrypto/engine/eng_rdrand.c
@@ -0,0 +1,142 @@
+/* ====================================================================
+ * Copyright (c) 2011 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. 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.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED 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 OpenSSL PROJECT OR
+ * ITS 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 <openssl/opensslconf.h>
+
+#include <stdio.h>
+#include <string.h>
+#include <openssl/engine.h>
+#include <openssl/rand.h>
+#include <openssl/err.h>
+
+#if (defined(__i386)   || defined(__i386__)   || defined(_M_IX86) || \
+     defined(__x86_64) || defined(__x86_64__) || \
+     defined(_M_AMD64) || defined (_M_X64)) && defined(OPENSSL_CPUID_OBJ)
+
+size_t OPENSSL_ia32_rdrand(void);
+
+static int get_random_bytes (unsigned char *buf, int num)
+        {
+        size_t rnd;
+
+        while (num>=(int)sizeof(size_t)) {
+                if ((rnd = OPENSSL_ia32_rdrand()) == 0) return 0;
+
+                *((size_t *)buf) = rnd;
+                buf += sizeof(size_t);
+                num -= sizeof(size_t);
+        }
+        if (num) {
+                if ((rnd = OPENSSL_ia32_rdrand()) == 0) return 0;
+
+                memcpy (buf,&rnd,num);
+        }
+
+        return 1;
+        }
+
+static int random_status (void)
+{       return 1;       }
+
+static RAND_METHOD rdrand_meth =
+        {
+        NULL,   /* seed */
+        get_random_bytes,
+        NULL,   /* cleanup */
+        NULL,   /* add */
+        get_random_bytes,
+        random_status,
+        };
+
+static int rdrand_init(ENGINE *e)
+{       return 1;       }
+
+static const char *engine_e_rdrand_id = "rdrand";
+static const char *engine_e_rdrand_name = "Intel RDRAND engine";
+
+static int bind_helper(ENGINE *e)
+        {
+        if (!ENGINE_set_id(e, engine_e_rdrand_id) ||
+            !ENGINE_set_name(e, engine_e_rdrand_name) ||
+            !ENGINE_set_init_function(e, rdrand_init) ||
+            !ENGINE_set_RAND(e, &rdrand_meth) )
+                return 0;
+
+        return 1;
+        }
+
+static ENGINE *ENGINE_rdrand(void)
+        {
+        ENGINE *ret = ENGINE_new();
+        if(!ret)
+                return NULL;
+        if(!bind_helper(ret))
+                {
+                ENGINE_free(ret);
+                return NULL;
+                }
+        return ret;
+        }
+
+void ENGINE_load_rdrand (void)
+        {
+        extern unsigned int OPENSSL_ia32cap_P[];
+
+        if (OPENSSL_ia32cap_P[1] & (1<<(62-32)))
+                {
+                ENGINE *toadd = ENGINE_rdrand();
+                if(!toadd) return;
+                ENGINE_add(toadd);
+                ENGINE_free(toadd);
+                ERR_clear_error();
+                }
+        }
+#else
+void ENGINE_load_rdrand (void) {}
+#endif