--- /dev/null
+/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/rand.h>
+
+#include <limits.h>
+
+
+void RAND_seed(const void *buf, int num) {
+ // OpenSSH calls |RAND_seed| before jailing on the assumption that any needed
+ // file descriptors etc will be opened.
+ uint8_t unused;
+ RAND_bytes(&unused, sizeof(unused));
+}
+
+int RAND_load_file(const char *path, long num) {
+ if (num < 0) { // read the "whole file"
+ return 1;
+ } else if (num <= INT_MAX) {
+ return (int) num;
+ } else {
+ return INT_MAX;
+ }
+}
+
+const char *RAND_file_name(char *buf, size_t num) { return NULL; }
+
+void RAND_add(const void *buf, int num, double entropy) {}
+
+int RAND_egd(const char *path) {
+ return 255;
+}
+
+int RAND_poll(void) {
+ return 1;
+}
+
+int RAND_status(void) {
+ return 1;
+}
+
+static const struct rand_meth_st kSSLeayMethod = {
+ RAND_seed,
+ RAND_bytes,
+ RAND_cleanup,
+ RAND_add,
+ RAND_pseudo_bytes,
+ RAND_status,
+};
+
+RAND_METHOD *RAND_SSLeay(void) {
+ return (RAND_METHOD*) &kSSLeayMethod;
+}
+
+const RAND_METHOD *RAND_get_rand_method(void) { return RAND_SSLeay(); }
+
+void RAND_set_rand_method(const RAND_METHOD *method) {}
+
+void RAND_cleanup(void) {}