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-rw-r--r--crypto/engine/eng_rdrand.c142
1 files changed, 74 insertions, 68 deletions
diff --git a/crypto/engine/eng_rdrand.c b/crypto/engine/eng_rdrand.c
index 4e9e91d54b13..9316d6fe21d0 100644
--- a/crypto/engine/eng_rdrand.c
+++ b/crypto/engine/eng_rdrand.c
@@ -61,83 +61,89 @@
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 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; }
+{
+ 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_flags(e, ENGINE_FLAGS_NO_REGISTER_ALL) ||
- !ENGINE_set_init_function(e, rdrand_init) ||
- !ENGINE_set_RAND(e, &rdrand_meth) )
- return 0;
+{
+ if (!ENGINE_set_id(e, engine_e_rdrand_id) ||
+ !ENGINE_set_name(e, engine_e_rdrand_name) ||
+ !ENGINE_set_flags(e, ENGINE_FLAGS_NO_REGISTER_ALL) ||
+ !ENGINE_set_init_function(e, rdrand_init) ||
+ !ENGINE_set_RAND(e, &rdrand_meth))
+ return 0;
- return 1;
- }
+ 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();
- }
- }
+{
+ 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) {}
+void ENGINE_load_rdrand(void)
+{
+}
#endif