initial commit, 4.5 stable

thirdparty/mbedtls/library/entropy_poll.h

@@ -0,0 +1,64 @@
+/**
+ * \file entropy_poll.h
+ *
+ * \brief Platform-specific and custom entropy polling functions
+ */
+/*
+ *  Copyright The Mbed TLS Contributors
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+ */
+#ifndef MBEDTLS_ENTROPY_POLL_H
+#define MBEDTLS_ENTROPY_POLL_H
+
+#include "mbedtls/build_info.h"
+
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Default thresholds for built-in sources, in bytes
+ */
+#define MBEDTLS_ENTROPY_MIN_PLATFORM     32     /**< Minimum for platform source    */
+#if !defined(MBEDTLS_ENTROPY_MIN_HARDWARE)
+#define MBEDTLS_ENTROPY_MIN_HARDWARE     32     /**< Minimum for the hardware source */
+#endif
+
+#if !defined(MBEDTLS_NO_PLATFORM_ENTROPY)
+/**
+ * \brief           Platform-specific entropy poll callback
+ */
+int mbedtls_platform_entropy_poll(void *data,
+                                  unsigned char *output, size_t len, size_t *olen);
+#endif
+
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+/**
+ * \brief           Entropy poll callback for a hardware source
+ *
+ * \warning         This is not provided by Mbed TLS!
+ *                  See \c MBEDTLS_ENTROPY_HARDWARE_ALT in mbedtls_config.h.
+ *
+ * \note            This must accept NULL as its first argument.
+ */
+int mbedtls_hardware_poll(void *data,
+                          unsigned char *output, size_t len, size_t *olen);
+#endif
+
+#if defined(MBEDTLS_ENTROPY_NV_SEED)
+/**
+ * \brief           Entropy poll callback for a non-volatile seed file
+ *
+ * \note            This must accept NULL as its first argument.
+ */
+int mbedtls_nv_seed_poll(void *data,
+                         unsigned char *output, size_t len, size_t *olen);
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* entropy_poll.h */