1 files changed, 41 insertions, 0 deletions
diff --git a/providers/implementations/include/prov/seeding.h b/providers/implementations/include/prov/seeding.h
new file mode 100644
index 000000000000..637b921b2b52
--- /dev/null
+++ b/providers/implementations/include/prov/seeding.h
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2020-2021 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the Apache License 2.0 (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include "prov/provider_ctx.h"
+#include "crypto/rand_pool.h"
+
+/* Hardware-based seeding functions. */
+size_t ossl_prov_acquire_entropy_from_tsc(RAND_POOL *pool);
+size_t ossl_prov_acquire_entropy_from_cpu(RAND_POOL *pool);
+
+/*
+ * Add some platform specific additional data
+ *
+ * This function is platform specific and adds some random noise to the
+ * additional data used for generating random bytes and for reseeding
+ * the drbg.
+ *
+ * Returns 1 on success and 0 on failure.
+ */
+int ossl_rand_pool_add_additional_data(RAND_POOL *pool);
+
+/*
+ * External seeding functions from the core dispatch table.
+ */
+int ossl_prov_seeding_from_dispatch(const OSSL_DISPATCH *fns);
+
+size_t ossl_prov_get_entropy(PROV_CTX *prov_ctx, unsigned char **pout,
+                             int entropy, size_t min_len, size_t max_len);
+void ossl_prov_cleanup_entropy(PROV_CTX *prov_ctx, unsigned char *buf,
+                               size_t len);
+size_t ossl_prov_get_nonce(PROV_CTX *prov_ctx, unsigned char **pout,
+                           size_t min_len, size_t max_len,
+                           const void *salt, size_t salt_len);
+void ossl_prov_cleanup_nonce(PROV_CTX *prov_ctx, unsigned char *buf,
+                             size_t len);